Initial Commit

.envrc

@@ -0,0 +1 @@
+use nix

.gitignore

@@ -0,0 +1,3 @@
+.DS_Store
+data/
+.direnv/

.sqlfluff

@@ -0,0 +1,2 @@
+[sqlfluff]
+dialect = sqlite

API.md

@@ -0,0 +1,13 @@
+# API
+
+## Original Endpoints
+
+POST /users/create
+GET /users/auth
+GET /syncs/progress/:document
+PUT /syncs/progress
+
+## New Endpoints
+
+GET /syncs/activity
+POST /syncs/activity

Dockerfile

@@ -0,0 +1,12 @@
+# FROM golang:1.20-alpine AS build
+FROM alpine:edge AS build
+RUN apk add --no-cache --update go gcc g++
+WORKDIR /app
+COPY . /app
+RUN go mod download
+RUN CGO_ENABLED=1 CGO_CFLAGS="-D_LARGEFILE64_SOURCE" go build -o /sync-ninja cmd/main.go
+
+FROM alpine:3.18
+COPY --from=build /sync-ninja /sync-ninja
+EXPOSE 8585
+ENTRYPOINT ["/sync-ninja", "serve"]

Makefile

@@ -0,0 +1,12 @@
+docker_build_local:
+	docker build -t sync-ninja:latest .
+
+docker_build_release_beta:
+	docker buildx build \
+		--platform linux/amd64,linux/arm64 \
+		-t gitea.va.reichard.io/reichard/sync-ninja:beta --push .
+
+docker_build_release_latest:
+	docker buildx build \
+		--platform linux/amd64,linux/arm64 \
+		-t gitea.va.reichard.io/reichard/sync-ninja:latest --push .

README.md

@@ -0,0 +1,34 @@
+# Book Manager
+
+<p align="center">
+    <a href="https://gitea.va.reichard.io/evan/BookManager/raw/branch/master/screenshots/login.png">
+        <img src="https://gitea.va.reichard.io/evan/BookManager/raw/branch/master/screenshots/login.png" width="33%">
+    </a>
+    <a href="https://gitea.va.reichard.io/evan/BookManager/raw/branch/master/screenshots/home.png">
+        <img src="https://gitea.va.reichard.io/evan/BookManager/raw/branch/master/screenshots/home.png" width="33%">
+    </a>
+    <a href="https://gitea.va.reichard.io/evan/BookManager/raw/branch/master/screenshots/documents.png">
+        <img src="https://gitea.va.reichard.io/evan/BookManager/raw/branch/master/screenshots/documents.png" width="33%">
+    </a>
+</p>
+
+---
+
+# Development
+
+SQLC Generation:
+
+```
+go install github.com/sqlc-dev/sqlc/cmd/sqlc@latest
+~/go/bin/sqlc generate
+```
+
+Run Development:
+
+```
+CONFIG_PATH=./data DATA_PATH=./data go run cmd/main.go serve
+```
+
+## Notes
+
+- Icons: https://www.svgrepo.com/collection/solar-bold-icons

api/api.go

@@ -0,0 +1,137 @@
+package api
+
+import (
+	"crypto/rand"
+	"html/template"
+	"net/http"
+
+	"github.com/gin-contrib/multitemplate"
+	"github.com/gin-contrib/sessions"
+	"github.com/gin-contrib/sessions/cookie"
+	"github.com/gin-gonic/gin"
+	"reichard.io/bbank/config"
+	"reichard.io/bbank/database"
+	"reichard.io/bbank/graph"
+)
+
+type API struct {
+	Router *gin.Engine
+	Config *config.Config
+	DB     *database.DBManager
+}
+
+func NewApi(db *database.DBManager, c *config.Config) *API {
+	api := &API{
+		Router: gin.Default(),
+		Config: c,
+		DB:     db,
+	}
+
+	// Assets & Web App Templates
+	api.Router.Static("/assets", "./assets")
+
+	// Generate Secure Token
+	newToken, err := generateToken(64)
+	if err != nil {
+		panic("Unable to generate secure token")
+	}
+
+	// Configure Cookie Session Store
+	store := cookie.NewStore(newToken)
+	store.Options(sessions.Options{
+		MaxAge:   60 * 60 * 24,
+		Secure:   true,
+		HttpOnly: true,
+		SameSite: http.SameSiteStrictMode,
+	})
+	api.Router.Use(sessions.Sessions("token", store))
+
+	// Register Web App Route
+	api.registerWebAppRoutes()
+
+	// Register API Routes
+	apiGroup := api.Router.Group("/api")
+	api.registerKOAPIRoutes(apiGroup)
+	api.registerWebAPIRoutes(apiGroup)
+
+	return api
+}
+
+func (api *API) registerWebAppRoutes() {
+	// Define Templates & Helper Functions
+	render := multitemplate.NewRenderer()
+	helperFuncs := template.FuncMap{
+		"GetSVGGraphData": graph.GetSVGGraphData,
+	}
+
+	render.AddFromFilesFuncs("login", helperFuncs, "templates/login.html")
+	render.AddFromFilesFuncs("home", helperFuncs, "templates/base.html", "templates/home.html")
+	render.AddFromFilesFuncs("graphs", helperFuncs, "templates/base.html", "templates/graphs.html")
+	render.AddFromFilesFuncs("activity", helperFuncs, "templates/base.html", "templates/activity.html")
+	render.AddFromFilesFuncs("documents", helperFuncs, "templates/base.html", "templates/documents.html")
+
+	api.Router.HTMLRender = render
+
+	api.Router.GET("/login", api.createAppResourcesRoute("login"))
+	api.Router.GET("/register", api.createAppResourcesRoute("login", gin.H{"Register": true}))
+	api.Router.GET("/logout", api.authWebAppMiddleware, api.authLogout)
+	api.Router.POST("/login", api.authFormLogin)
+	api.Router.POST("/register", api.authFormRegister)
+
+	api.Router.GET("/", api.authWebAppMiddleware, api.createAppResourcesRoute("home"))
+	api.Router.GET("/documents", api.authWebAppMiddleware, api.createAppResourcesRoute("documents"))
+	api.Router.GET("/documents/:document/file", api.authWebAppMiddleware, api.downloadDocumentFile)
+	api.Router.GET("/documents/:document/cover", api.authWebAppMiddleware, api.getDocumentCover)
+
+	// TODO
+	api.Router.GET("/activity", api.authWebAppMiddleware, baseResourceRoute("activity"))
+	api.Router.GET("/graphs", api.authWebAppMiddleware, baseResourceRoute("graphs"))
+
+}
+
+func (api *API) registerKOAPIRoutes(apiGroup *gin.RouterGroup) {
+	koGroup := apiGroup.Group("/ko")
+
+	koGroup.GET("/info", api.serverInfo)
+
+	koGroup.POST("/users/create", api.createUser)
+	koGroup.GET("/users/auth", api.authAPIMiddleware, api.authorizeUser)
+
+	koGroup.PUT("/syncs/progress", api.authAPIMiddleware, api.setProgress)
+	koGroup.GET("/syncs/progress/:document", api.authAPIMiddleware, api.getProgress)
+
+	koGroup.POST("/documents", api.authAPIMiddleware, api.addDocuments)
+	koGroup.POST("/syncs/documents", api.authAPIMiddleware, api.checkDocumentsSync)
+	koGroup.PUT("/documents/:document/file", api.authAPIMiddleware, api.uploadDocumentFile)
+	koGroup.GET("/documents/:document/file", api.authAPIMiddleware, api.downloadDocumentFile)
+
+	koGroup.POST("/activity", api.authAPIMiddleware, api.addActivities)
+	koGroup.POST("/syncs/activity", api.authAPIMiddleware, api.checkActivitySync)
+}
+
+func (api *API) registerWebAPIRoutes(apiGroup *gin.RouterGroup) {
+	v1Group := apiGroup.Group("/v1")
+
+	v1Group.GET("/info", api.serverInfo)
+
+	v1Group.POST("/users", api.createUser)
+	v1Group.GET("/users", api.authAPIMiddleware, api.getUsers)
+
+	v1Group.POST("/documents", api.authAPIMiddleware, api.checkDocumentsSync)
+	v1Group.GET("/documents", api.authAPIMiddleware, api.getDocuments)
+
+	v1Group.GET("/documents/:document/file", api.authAPIMiddleware, api.downloadDocumentFile)
+	v1Group.PUT("/documents/:document/file", api.authAPIMiddleware, api.uploadDocumentFile)
+
+	v1Group.GET("/activity", api.authAPIMiddleware, api.getActivity)
+	v1Group.GET("/devices", api.authAPIMiddleware, api.getDevices)
+}
+
+func generateToken(n int) ([]byte, error) {
+	b := make([]byte, n)
+	_, err := rand.Read(b)
+	if err != nil {
+		return nil, err
+	}
+	return b, nil
+}

api/app-routes.go

@@ -0,0 +1,169 @@
+package api
+
+import (
+	"fmt"
+	"net/http"
+	"os"
+	"path/filepath"
+
+	"github.com/gin-gonic/gin"
+	log "github.com/sirupsen/logrus"
+	"reichard.io/bbank/database"
+	"reichard.io/bbank/metadata"
+)
+
+func baseResourceRoute(template string, args ...map[string]any) func(c *gin.Context) {
+	variables := gin.H{"RouteName": template}
+	if len(args) > 0 {
+		variables = args[0]
+	}
+
+	return func(c *gin.Context) {
+		rUser, _ := c.Get("AuthorizedUser")
+		variables["User"] = rUser
+		c.HTML(http.StatusOK, template, variables)
+	}
+}
+
+func (api *API) createAppResourcesRoute(routeName string, args ...map[string]any) func(*gin.Context) {
+	// Merge Optional Template Data
+	var templateVars = gin.H{}
+	if len(args) > 0 {
+		templateVars = args[0]
+	}
+	templateVars["RouteName"] = routeName
+
+	return func(c *gin.Context) {
+		rUser, _ := c.Get("AuthorizedUser")
+		qParams := bindQueryParams(c)
+		templateVars["User"] = rUser
+
+		if routeName == "documents" {
+			documents, err := api.DB.Queries.GetDocumentsWithStats(api.DB.Ctx, database.GetDocumentsWithStatsParams{
+				UserID: rUser.(string),
+				Offset: (*qParams.Page - 1) * *qParams.Limit,
+				Limit:  *qParams.Limit,
+			})
+			if err != nil {
+				log.Info(err)
+				c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+				return
+			}
+
+			templateVars["Data"] = documents
+		} else if routeName == "home" {
+			weekly_streak, _ := api.DB.Queries.GetUserWindowStreaks(api.DB.Ctx, database.GetUserWindowStreaksParams{
+				UserID: rUser.(string),
+				Window: "WEEK",
+			})
+
+			daily_streak, _ := api.DB.Queries.GetUserWindowStreaks(api.DB.Ctx, database.GetUserWindowStreaksParams{
+				UserID: rUser.(string),
+				Window: "DAY",
+			})
+
+			database_info, _ := api.DB.Queries.GetDatabaseInfo(api.DB.Ctx, rUser.(string))
+			read_graph_data, err := api.DB.Queries.GetDailyReadStats(api.DB.Ctx, rUser.(string))
+			if err != nil {
+				log.Info("HMMMM:", err)
+			}
+
+			templateVars["Data"] = gin.H{
+				"DailyStreak":  daily_streak,
+				"WeeklyStreak": weekly_streak,
+				"DatabaseInfo": database_info,
+				"GraphData":    read_graph_data,
+			}
+		}
+
+		c.HTML(http.StatusOK, routeName, templateVars)
+	}
+}
+
+func (api *API) getDocumentCover(c *gin.Context) {
+	var rDoc requestDocumentID
+	if err := c.ShouldBindUri(&rDoc); err != nil {
+		c.AbortWithStatus(http.StatusBadRequest)
+		return
+	}
+
+	// Validate Document Exists in DB
+	document, err := api.DB.Queries.GetDocument(api.DB.Ctx, rDoc.DocumentID)
+	if err != nil {
+		c.AbortWithStatus(http.StatusBadRequest)
+		return
+	}
+
+	// Handle Identified Document
+	if document.Olid != nil {
+		if *document.Olid == "UNKNOWN" {
+			c.Redirect(http.StatusFound, "/assets/no-cover.jpg")
+			return
+		}
+
+		// Derive Path
+		fileName := "." + filepath.Clean(fmt.Sprintf("/%s.jpg", *document.Olid))
+		safePath := filepath.Join(api.Config.DataPath, "covers", fileName)
+
+		// Validate File Exists
+		_, err = os.Stat(safePath)
+		if err != nil {
+			c.Redirect(http.StatusFound, "/assets/no-cover.jpg")
+			return
+		}
+
+		c.File(safePath)
+		return
+	}
+
+	/*
+		This is a bit convoluted because we want to ensure we set the OLID to
+		UNKNOWN if there are any errors. This will ideally prevent us from
+		hitting the OpenLibrary API multiple times in the future.
+	*/
+
+	var coverID string = "UNKNOWN"
+	var coverFilePath *string
+
+	// Identify Documents & Save Covers
+	coverIDs, err := metadata.GetCoverIDs(document.Title, document.Author)
+	if err == nil && len(coverIDs) > 0 {
+		coverFilePath, err = metadata.DownloadAndSaveCover(coverIDs[0], api.Config.DataPath)
+		if err == nil {
+			coverID = coverIDs[0]
+		}
+	}
+
+	// Upsert Document
+	if _, err = api.DB.Queries.UpsertDocument(api.DB.Ctx, database.UpsertDocumentParams{
+		ID:   document.ID,
+		Olid: &coverID,
+	}); err != nil {
+		log.Error("Document Upsert Error")
+	}
+
+	// Return Unknown Cover
+	if coverID == "UNKNOWN" {
+		c.Redirect(http.StatusFound, "/assets/no-cover.jpg")
+		return
+	}
+
+	c.File(*coverFilePath)
+}
+
+/*
+METADATA:
+  - Metadata Match
+  - Update Metadata
+*/
+
+/*
+GRAPHS:
+  - Streaks (Daily, Weekly, Monthly)
+  - Last Week Activity (Daily - Pages & Time)
+
+
+  - Pages Read (Daily, Weekly, Monthly)
+  - Reading Progress
+  - Average Reading Time (Daily, Weekly, Monthly)
+*/

api/auth.go

@@ -0,0 +1,167 @@
+package api
+
+import (
+	"crypto/md5"
+	"fmt"
+	"net/http"
+	"strings"
+
+	argon2 "github.com/alexedwards/argon2id"
+	"github.com/gin-contrib/sessions"
+	"github.com/gin-gonic/gin"
+	"reichard.io/bbank/database"
+)
+
+type authHeader struct {
+	AuthUser string `header:"x-auth-user"`
+	AuthKey  string `header:"x-auth-key"`
+}
+
+func (api *API) authorizeCredentials(username string, password string) (authorized bool) {
+	user, err := api.DB.Queries.GetUser(api.DB.Ctx, username)
+	if err != nil {
+		return false
+	}
+
+	if match, err := argon2.ComparePasswordAndHash(password, user.Pass); err != nil || match != true {
+		return false
+	}
+
+	return true
+}
+
+func (api *API) authAPIMiddleware(c *gin.Context) {
+	session := sessions.Default(c)
+
+	// Utilize Session Token
+	if authorizedUser := session.Get("authorizedUser"); authorizedUser != nil {
+		c.Set("AuthorizedUser", authorizedUser)
+		c.Next()
+		return
+	}
+
+	var rHeader authHeader
+	if err := c.ShouldBindHeader(&rHeader); err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Incorrect Headers"})
+		return
+	}
+	if rHeader.AuthUser == "" || rHeader.AuthKey == "" {
+		c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Invalid Authorization Headers"})
+		return
+	}
+
+	if authorized := api.authorizeCredentials(rHeader.AuthUser, rHeader.AuthKey); authorized != true {
+		c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Unauthorized"})
+		return
+	}
+
+	// Set Session Cookie
+	session.Set("authorizedUser", rHeader.AuthUser)
+	session.Save()
+
+	c.Set("AuthorizedUser", rHeader.AuthUser)
+	c.Next()
+}
+
+func (api *API) authWebAppMiddleware(c *gin.Context) {
+	session := sessions.Default(c)
+
+	// Utilize Session Token
+	if authorizedUser := session.Get("authorizedUser"); authorizedUser != nil {
+		c.Set("AuthorizedUser", authorizedUser)
+		c.Next()
+		return
+	}
+
+	c.Redirect(http.StatusFound, "/login")
+	c.Abort()
+}
+
+func (api *API) authFormLogin(c *gin.Context) {
+	username := strings.TrimSpace(c.PostForm("username"))
+	rawPassword := strings.TrimSpace(c.PostForm("password"))
+
+	if username == "" || rawPassword == "" {
+		c.HTML(http.StatusUnauthorized, "login", gin.H{
+			"Error": "Invalid Credentials",
+		})
+		return
+	}
+	password := fmt.Sprintf("%x", md5.Sum([]byte(rawPassword)))
+
+	if authorized := api.authorizeCredentials(username, password); authorized != true {
+		c.HTML(http.StatusUnauthorized, "login", gin.H{
+			"Error": "Invalid Credentials",
+		})
+		return
+	}
+
+	session := sessions.Default(c)
+
+	// Set Session Cookie
+	session.Set("authorizedUser", username)
+	session.Save()
+
+	c.Redirect(http.StatusFound, "/")
+}
+
+func (api *API) authLogout(c *gin.Context) {
+	session := sessions.Default(c)
+	session.Clear()
+	session.Save()
+	c.Redirect(http.StatusFound, "/login")
+}
+
+func (api *API) authFormRegister(c *gin.Context) {
+	username := strings.TrimSpace(c.PostForm("username"))
+	rawPassword := strings.TrimSpace(c.PostForm("password"))
+
+	if username == "" || rawPassword == "" {
+		c.HTML(http.StatusBadRequest, "login", gin.H{
+			"Register": true,
+			"Error":    "Registration Disabled or User Already Exists",
+		})
+		return
+	}
+	password := fmt.Sprintf("%x", md5.Sum([]byte(rawPassword)))
+
+	hashedPassword, err := argon2.CreateHash(password, argon2.DefaultParams)
+	if err != nil {
+		c.HTML(http.StatusBadRequest, "login", gin.H{
+			"Register": true,
+			"Error":    "Registration Disabled or User Already Exists",
+		})
+		return
+	}
+
+	rows, err := api.DB.Queries.CreateUser(api.DB.Ctx, database.CreateUserParams{
+		ID:   username,
+		Pass: hashedPassword,
+	})
+
+	// SQL Error
+	if err != nil {
+		c.HTML(http.StatusBadRequest, "login", gin.H{
+			"Register": true,
+			"Error":    "Registration Disabled or User Already Exists",
+		})
+		return
+	}
+
+	// User Already Exists
+	if rows == 0 {
+		c.HTML(http.StatusBadRequest, "login", gin.H{
+			"Register": true,
+			"Error":    "Registration Disabled or User Already Exists",
+		})
+		return
+	}
+
+	session := sessions.Default(c)
+
+	// Set Session Cookie
+	session.Set("authorizedUser", username)
+	session.Save()
+
+	c.Redirect(http.StatusFound, "/")
+}

api/ko-routes.go

@@ -0,0 +1,593 @@
+package api
+
+import (
+	"crypto/md5"
+	"database/sql"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+	"time"
+
+	argon2 "github.com/alexedwards/argon2id"
+	"github.com/gabriel-vasile/mimetype"
+	"github.com/gin-gonic/gin"
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/exp/slices"
+	"reichard.io/bbank/database"
+)
+
+type activityItem struct {
+	DocumentID  string `json:"document"`
+	StartTime   int64  `json:"start_time"`
+	Duration    int64  `json:"duration"`
+	CurrentPage int64  `json:"current_page"`
+	TotalPages  int64  `json:"total_pages"`
+}
+
+type requestActivity struct {
+	DeviceID string         `json:"device_id"`
+	Device   string         `json:"device"`
+	Activity []activityItem `json:"activity"`
+}
+
+type requestCheckActivitySync struct {
+	DeviceID string `json:"device_id"`
+}
+
+type requestDocument struct {
+	Documents []database.Document `json:"documents"`
+}
+
+type requestPosition struct {
+	DocumentID string  `json:"document"`
+	Percentage float64 `json:"percentage"`
+	Progress   string  `json:"progress"`
+	Device     string  `json:"device"`
+	DeviceID   string  `json:"device_id"`
+}
+
+type requestUser struct {
+	Username string `json:"username"`
+	Password string `json:"password"`
+}
+
+type requestCheckDocumentSync struct {
+	DeviceID string   `json:"device_id"`
+	Device   string   `json:"device"`
+	Have     []string `json:"have"`
+}
+
+type responseCheckDocumentSync struct {
+	Want   []string            `json:"want"`
+	Give   []database.Document `json:"give"`
+	Delete []string            `json:"deleted"`
+}
+
+type requestDocumentID struct {
+	DocumentID string `uri:"document" binding:"required"`
+}
+
+var allowedExtensions []string = []string{".epub", ".html"}
+
+func (api *API) authorizeUser(c *gin.Context) {
+	c.JSON(200, gin.H{
+		"authorized": "OK",
+	})
+}
+
+func (api *API) createUser(c *gin.Context) {
+	var rUser requestUser
+	if err := c.ShouldBindJSON(&rUser); err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid User Data"})
+		return
+	}
+
+	if rUser.Username == "" || rUser.Password == "" {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid User Data"})
+		return
+	}
+
+	hashedPassword, err := argon2.CreateHash(rUser.Password, argon2.DefaultParams)
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Unknown Error"})
+		return
+	}
+
+	// TODO - Initial User is Admin & Enable / Disable Registration
+	rows, err := api.DB.Queries.CreateUser(api.DB.Ctx, database.CreateUserParams{
+		ID:   rUser.Username,
+		Pass: hashedPassword,
+	})
+
+	// SQL Error
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid User Data"})
+		return
+	}
+
+	// User Exists (ON CONFLICT DO NOTHING)
+	if rows == 0 {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "User Already Exists"})
+		return
+	}
+
+	// TODO: Struct -> JSON
+	c.JSON(http.StatusCreated, gin.H{
+		"username": rUser.Username,
+	})
+}
+
+func (api *API) setProgress(c *gin.Context) {
+	rUser, _ := c.Get("AuthorizedUser")
+
+	var rPosition requestPosition
+	if err := c.ShouldBindJSON(&rPosition); err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Progress Data"})
+		return
+	}
+
+	// Upsert Device
+	device, err := api.DB.Queries.UpsertDevice(api.DB.Ctx, database.UpsertDeviceParams{
+		ID:         rPosition.DeviceID,
+		UserID:     rUser.(string),
+		DeviceName: rPosition.Device,
+	})
+	if err != nil {
+		log.Error("Device Upsert Error:", device, err)
+	}
+
+	// Upsert Document
+	document, err := api.DB.Queries.UpsertDocument(api.DB.Ctx, database.UpsertDocumentParams{
+		ID: rPosition.DocumentID,
+	})
+	if err != nil {
+		log.Error("Document Upsert Error:", document, err)
+	}
+
+	// Create or Replace Progress
+	progress, err := api.DB.Queries.UpdateProgress(api.DB.Ctx, database.UpdateProgressParams{
+		Percentage: rPosition.Percentage,
+		DocumentID: rPosition.DocumentID,
+		DeviceID:   rPosition.DeviceID,
+		UserID:     rUser.(string),
+		Progress:   rPosition.Progress,
+	})
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+		return
+	}
+
+	// TODO: Struct -> JSON
+	c.JSON(http.StatusOK, gin.H{
+		"document":  progress.DocumentID,
+		"timestamp": progress.CreatedAt,
+	})
+}
+
+func (api *API) getProgress(c *gin.Context) {
+	rUser, _ := c.Get("AuthorizedUser")
+
+	var rDocID requestDocumentID
+	if err := c.ShouldBindUri(&rDocID); err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+		return
+	}
+
+	progress, err := api.DB.Queries.GetProgress(api.DB.Ctx, database.GetProgressParams{
+		DocumentID: rDocID.DocumentID,
+		UserID:     rUser.(string),
+	})
+
+	if err != nil {
+		log.Error("Invalid Progress:", progress, err)
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Document"})
+		return
+	}
+
+	// TODO: Struct -> JSON
+	c.JSON(http.StatusOK, gin.H{
+		"document":   progress.DocumentID,
+		"percentage": progress.Percentage,
+		"progress":   progress.Progress,
+		"device":     progress.DeviceName,
+		"device_id":  progress.DeviceID,
+	})
+}
+
+func (api *API) addActivities(c *gin.Context) {
+	rUser, _ := c.Get("AuthorizedUser")
+
+	var rActivity requestActivity
+	if err := c.ShouldBindJSON(&rActivity); err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Activity"})
+		return
+	}
+
+	// Do Transaction
+	tx, err := api.DB.DB.Begin()
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Unknown Error"})
+		return
+	}
+
+	// Derive Unique Documents
+	allDocumentsMap := make(map[string]bool)
+	for _, item := range rActivity.Activity {
+		allDocumentsMap[item.DocumentID] = true
+	}
+	allDocuments := getKeys(allDocumentsMap)
+
+	// Defer & Start Transaction
+	defer tx.Rollback()
+	qtx := api.DB.Queries.WithTx(tx)
+
+	// Upsert Documents
+	for _, doc := range allDocuments {
+		_, err := qtx.UpsertDocument(api.DB.Ctx, database.UpsertDocumentParams{
+			ID: doc,
+		})
+
+		if err != nil {
+			c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Document"})
+			return
+		}
+	}
+
+	// Upsert Device
+	_, err = qtx.UpsertDevice(api.DB.Ctx, database.UpsertDeviceParams{
+		ID:         rActivity.DeviceID,
+		UserID:     rUser.(string),
+		DeviceName: rActivity.Device,
+	})
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Device"})
+		return
+	}
+
+	// Add All Activity
+	for _, item := range rActivity.Activity {
+		_, err := qtx.AddActivity(api.DB.Ctx, database.AddActivityParams{
+			UserID:      rUser.(string),
+			DocumentID:  item.DocumentID,
+			DeviceID:    rActivity.DeviceID,
+			StartTime:   time.Unix(int64(item.StartTime), 0).UTC(),
+			Duration:    int64(item.Duration),
+			CurrentPage: int64(item.CurrentPage),
+			TotalPages:  int64(item.TotalPages),
+		})
+
+		if err != nil {
+			c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Activity"})
+			return
+		}
+	}
+
+	// Commit Transaction
+	tx.Commit()
+
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Document"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"added": len(rActivity.Activity),
+	})
+}
+
+func (api *API) checkActivitySync(c *gin.Context) {
+	rUser, _ := c.Get("AuthorizedUser")
+
+	var rCheckActivity requestCheckActivitySync
+	if err := c.ShouldBindJSON(&rCheckActivity); err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+		return
+	}
+
+	// Get Last Device Activity
+	lastActivity, err := api.DB.Queries.GetLastActivity(api.DB.Ctx, database.GetLastActivityParams{
+		UserID:   rUser.(string),
+		DeviceID: rCheckActivity.DeviceID,
+	})
+	if err == sql.ErrNoRows {
+		lastActivity = time.UnixMilli(0)
+	} else if err != nil {
+		log.Error("GetLastActivity Error:", err)
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Unknown Error"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"last_sync": lastActivity.Unix(),
+	})
+}
+
+func (api *API) addDocuments(c *gin.Context) {
+	var rNewDocs requestDocument
+	if err := c.ShouldBindJSON(&rNewDocs); err != nil {
+		log.Error("[addDocuments] Invalid JSON Bind")
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Document(s)"})
+		return
+	}
+
+	// Do Transaction
+	tx, err := api.DB.DB.Begin()
+	if err != nil {
+		log.Error("[addDocuments] Unknown Transaction Error")
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Unknown Error"})
+		return
+	}
+
+	// Defer & Start Transaction
+	defer tx.Rollback()
+	qtx := api.DB.Queries.WithTx(tx)
+
+	// Upsert Documents
+	for _, doc := range rNewDocs.Documents {
+		doc, err := qtx.UpsertDocument(api.DB.Ctx, database.UpsertDocumentParams{
+			ID:          doc.ID,
+			Title:       doc.Title,
+			Author:      doc.Author,
+			Series:      doc.Series,
+			SeriesIndex: doc.SeriesIndex,
+			Lang:        doc.Lang,
+			Description: doc.Description,
+		})
+		if err != nil {
+			log.Error("[addDocuments] UpsertDocument Error:", err)
+			c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Document"})
+			return
+		}
+
+		_, err = qtx.UpdateDocumentSync(api.DB.Ctx, database.UpdateDocumentSyncParams{
+			ID:     doc.ID,
+			Synced: true,
+		})
+		if err != nil {
+			log.Error("[addDocuments] UpsertDocumentSync Error:", err)
+			c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Document"})
+			return
+		}
+
+	}
+
+	// Commit Transaction
+	tx.Commit()
+
+	c.JSON(http.StatusOK, gin.H{
+		"changed": len(rNewDocs.Documents),
+	})
+}
+
+func (api *API) checkDocumentsSync(c *gin.Context) {
+	rUser, _ := c.Get("AuthorizedUser")
+
+	var rCheckDocs requestCheckDocumentSync
+	if err := c.ShouldBindJSON(&rCheckDocs); err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+		return
+	}
+
+	// Upsert Device
+	device, err := api.DB.Queries.UpsertDevice(api.DB.Ctx, database.UpsertDeviceParams{
+		ID:         rCheckDocs.DeviceID,
+		UserID:     rUser.(string),
+		DeviceName: rCheckDocs.Device,
+	})
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Device"})
+		return
+	}
+
+	missingDocs := []database.Document{}
+	deletedDocIDs := []string{}
+
+	if device.Sync == true {
+		// Get Missing Documents
+		missingDocs, err = api.DB.Queries.GetMissingDocuments(api.DB.Ctx, rCheckDocs.Have)
+		if err != nil {
+			log.Error("GetMissingDocuments Error:", err)
+			c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+			return
+		}
+
+		// Get Deleted Documents
+		deletedDocIDs, err = api.DB.Queries.GetDeletedDocuments(api.DB.Ctx, rCheckDocs.Have)
+		if err != nil {
+			log.Error("GetDeletedDocuements Error:", err)
+			c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+			return
+		}
+	}
+
+	// Get Wanted Documents
+	jsonHaves, err := json.Marshal(rCheckDocs.Have)
+	if err != nil {
+		log.Error("JSON Marshal Error:", err)
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+		return
+	}
+
+	wantedDocIDs, err := api.DB.Queries.GetWantedDocuments(api.DB.Ctx, string(jsonHaves))
+	if err != nil {
+		log.Error("GetWantedDocuments Error:", err)
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+		return
+	}
+
+	rCheckDocSync := responseCheckDocumentSync{
+		Delete: []string{},
+		Want:   []string{},
+		Give:   []database.Document{},
+	}
+
+	// Ensure Empty Array
+	if wantedDocIDs != nil {
+		rCheckDocSync.Want = wantedDocIDs
+	}
+	if missingDocs != nil {
+		rCheckDocSync.Give = missingDocs
+	}
+	if deletedDocIDs != nil {
+		rCheckDocSync.Delete = deletedDocIDs
+	}
+
+	c.JSON(http.StatusOK, rCheckDocSync)
+}
+
+func (api *API) uploadDocumentFile(c *gin.Context) {
+	var rDoc requestDocumentID
+	if err := c.ShouldBindUri(&rDoc); err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+		return
+	}
+
+	fileData, err := c.FormFile("file")
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "File Error"})
+		return
+	}
+
+	// Validate Type & Derive Extension on MIME
+	uploadedFile, err := fileData.Open()
+	fileMime, err := mimetype.DetectReader(uploadedFile)
+	fileExtension := fileMime.Extension()
+
+	if !slices.Contains(allowedExtensions, fileExtension) {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Filetype"})
+		return
+	}
+
+	// Validate Document Exists in DB
+	document, err := api.DB.Queries.GetDocument(api.DB.Ctx, rDoc.DocumentID)
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Unknown Document"})
+		return
+	}
+
+	// Derive Filename
+	var fileName string
+	if document.Author != nil {
+		fileName = fileName + *document.Author
+	} else {
+		fileName = fileName + "Unknown"
+	}
+
+	if document.Title != nil {
+		fileName = fileName + " - " + *document.Title
+	} else {
+		fileName = fileName + " - Unknown"
+	}
+
+	// Derive & Sanitize File Name
+	fileName = "." + filepath.Clean(fmt.Sprintf("/%s [%s]%s", fileName, document.ID, fileExtension))
+
+	// Generate Storage Path
+	safePath := filepath.Join(api.Config.DataPath, "documents", fileName)
+
+	// Save & Prevent Overwrites
+	_, err = os.Stat(safePath)
+	if os.IsNotExist(err) {
+		err = c.SaveUploadedFile(fileData, safePath)
+		if err != nil {
+			c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "File Error"})
+			return
+		}
+	}
+
+	// Get MD5 Hash
+	fileHash, err := getFileMD5(safePath)
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "File Error"})
+		return
+	}
+
+	// Upsert Document
+	_, err = api.DB.Queries.UpsertDocument(api.DB.Ctx, database.UpsertDocumentParams{
+		ID:       document.ID,
+		Md5:      fileHash,
+		Filepath: &fileName,
+	})
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Document Error"})
+		return
+	}
+
+	// Update Document Sync Attribute
+	_, err = api.DB.Queries.UpdateDocumentSync(api.DB.Ctx, database.UpdateDocumentSyncParams{
+		ID:     document.ID,
+		Synced: true,
+	})
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Document"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"status": "ok",
+	})
+}
+
+func (api *API) downloadDocumentFile(c *gin.Context) {
+	var rDoc requestDocumentID
+	if err := c.ShouldBindUri(&rDoc); err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+		return
+	}
+
+	// Get Document
+	document, err := api.DB.Queries.GetDocument(api.DB.Ctx, rDoc.DocumentID)
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Unknown Document"})
+		return
+	}
+
+	if document.Filepath == nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Document Doesn't Exist"})
+		return
+	}
+
+	// Derive Storage Location
+	filePath := filepath.Join(api.Config.DataPath, "documents", *document.Filepath)
+
+	// Validate File Exists
+	_, err = os.Stat(filePath)
+	if os.IsNotExist(err) {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Document Doesn't Exists"})
+		return
+	}
+
+	// Force Download (Security)
+	c.Header("Content-Disposition", fmt.Sprintf("attachment; filename=%s", filepath.Base(*document.Filepath)))
+	c.File(filePath)
+}
+
+func getKeys[M ~map[K]V, K comparable, V any](m M) []K {
+	r := make([]K, 0, len(m))
+	for k := range m {
+		r = append(r, k)
+	}
+	return r
+}
+
+func getFileMD5(filePath string) (*string, error) {
+	file, err := os.Open(filePath)
+	if err != nil {
+		return nil, err
+	}
+
+	defer file.Close()
+
+	hash := md5.New()
+	_, err = io.Copy(hash, file)
+	if err != nil {
+		return nil, err
+	}
+
+	fileHash := fmt.Sprintf("%x", hash.Sum(nil))
+
+	return &fileHash, nil
+}

api/web-routes.go

@@ -0,0 +1,163 @@
+package api
+
+import (
+	"net/http"
+
+	argon2 "github.com/alexedwards/argon2id"
+	"github.com/gin-gonic/gin"
+	"reichard.io/bbank/database"
+)
+
+type infoResponse struct {
+	Authorized bool   `json:"authorized"`
+	Version    string `json:"version"`
+}
+
+type queryParams struct {
+	Page     *int64  `form:"page"`
+	Limit    *int64  `form:"limit"`
+	Document *string `form:"document"`
+}
+
+func bindQueryParams(c *gin.Context) queryParams {
+	var qParams queryParams
+	c.BindQuery(&qParams)
+
+	if qParams.Limit == nil {
+		var defaultValue int64 = 50
+		qParams.Limit = &defaultValue
+	} else if *qParams.Limit < 0 {
+		var zeroValue int64 = 0
+		qParams.Limit = &zeroValue
+	}
+
+	if qParams.Page == nil || *qParams.Page < 1 {
+		var oneValue int64 = 0
+		qParams.Page = &oneValue
+	}
+
+	return qParams
+}
+
+func (api *API) serverInfo(c *gin.Context) {
+	respData := infoResponse{
+		Authorized: false,
+		Version:    api.Config.Version,
+	}
+
+	var rHeader authHeader
+	if err := c.ShouldBindHeader(&rHeader); err != nil {
+		c.JSON(200, respData)
+		return
+	}
+	if rHeader.AuthUser == "" || rHeader.AuthKey == "" {
+		c.JSON(200, respData)
+		return
+	}
+
+	user, err := api.DB.Queries.GetUser(api.DB.Ctx, rHeader.AuthUser)
+	if err != nil {
+		c.JSON(200, respData)
+		return
+	}
+
+	match, err := argon2.ComparePasswordAndHash(rHeader.AuthKey, user.Pass)
+	if err != nil || match != true {
+		c.JSON(200, respData)
+		return
+	}
+
+	respData.Authorized = true
+	c.JSON(200, respData)
+}
+
+func (api *API) getDocuments(c *gin.Context) {
+	qParams := bindQueryParams(c)
+
+	documents, err := api.DB.Queries.GetDocuments(api.DB.Ctx, database.GetDocumentsParams{
+		Offset: (*qParams.Page - 1) * *qParams.Limit,
+		Limit:  *qParams.Limit,
+	})
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+		return
+	}
+
+	if documents == nil {
+		documents = []database.Document{}
+	}
+
+	c.JSON(http.StatusOK, documents)
+}
+
+func (api *API) getUsers(c *gin.Context) {
+	rUser, _ := c.Get("AuthorizedUser")
+	qParams := bindQueryParams(c)
+
+	users, err := api.DB.Queries.GetUsers(api.DB.Ctx, database.GetUsersParams{
+		User:   rUser.(string),
+		Offset: (*qParams.Page - 1) * *qParams.Limit,
+		Limit:  *qParams.Limit,
+	})
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+		return
+	}
+
+	if users == nil {
+		users = []database.User{}
+	}
+
+	c.JSON(http.StatusOK, users)
+}
+
+func (api *API) getActivity(c *gin.Context) {
+	rUser, _ := c.Get("AuthorizedUser")
+	qParams := bindQueryParams(c)
+
+	dbActivityParams := database.GetActivityParams{
+		UserID:     rUser.(string),
+		DocFilter:  false,
+		DocumentID: "",
+		Offset:     (*qParams.Page - 1) * *qParams.Limit,
+		Limit:      *qParams.Limit,
+	}
+
+	if qParams.Document != nil {
+		dbActivityParams.DocFilter = true
+		dbActivityParams.DocumentID = *qParams.Document
+	}
+
+	activity, err := api.DB.Queries.GetActivity(api.DB.Ctx, dbActivityParams)
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+		return
+	}
+
+	if activity == nil {
+		activity = []database.Activity{}
+	}
+
+	c.JSON(http.StatusOK, activity)
+}
+
+func (api *API) getDevices(c *gin.Context) {
+	rUser, _ := c.Get("AuthorizedUser")
+	qParams := bindQueryParams(c)
+
+	devices, err := api.DB.Queries.GetDevices(api.DB.Ctx, database.GetDevicesParams{
+		UserID: rUser.(string),
+		Offset: (*qParams.Page - 1) * *qParams.Limit,
+		Limit:  *qParams.Limit,
+	})
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid Request"})
+		return
+	}
+
+	if devices == nil {
+		devices = []database.Device{}
+	}
+
+	c.JSON(http.StatusOK, devices)
+}

client/syncninja.koplugin/SyncNinjaClient.lua

@@ -0,0 +1,316 @@
+local UIManager = require("ui/uimanager")
+local socketutil = require("socketutil")
+local logger = require("logger")
+
+-- Push/Pull
+local SYNC_TIMEOUTS = {2, 5}
+
+-- Login/Register
+local AUTH_TIMEOUTS = {5, 10}
+
+local SyncNinjaClient = {service_spec = nil, custom_url = nil}
+
+function SyncNinjaClient:new(o)
+    if o == nil then o = {} end
+    setmetatable(o, self)
+    self.__index = self
+    if o.init then o:init() end
+    return o
+end
+
+function SyncNinjaClient:init()
+    local Spore = require("Spore")
+    self.client = Spore.new_from_spec(self.service_spec,
+                                      {base_url = self.custom_url})
+    package.loaded["Spore.Middleware.GinClient"] = {}
+    require("Spore.Middleware.GinClient").call = function(_, req)
+        req.headers["accept"] = "application/vnd.koreader.v1+json"
+    end
+    package.loaded["Spore.Middleware.SyncNinjaAuth"] = {}
+    require("Spore.Middleware.SyncNinjaAuth").call = function(args, req)
+        req.headers["x-auth-user"] = args.username
+        req.headers["x-auth-key"] = args.userkey
+    end
+    package.loaded["Spore.Middleware.AsyncHTTP"] = {}
+    require("Spore.Middleware.AsyncHTTP").call = function(args, req)
+        -- disable async http if Turbo looper is missing
+        if not UIManager.looper then return end
+        req:finalize()
+        local result
+
+        local turbo = require("turbo")
+        turbo.log.categories.success = false
+        turbo.log.categories.warning = false
+
+        local client = turbo.async.HTTPClient({verify_ca = false})
+        local res = coroutine.yield(client:fetch(request.url, {
+            url = req.url,
+            method = req.method,
+            body = req.env.spore.payload,
+            connect_timeout = 10,
+            request_timeout = 20,
+            on_headers = function(headers)
+                for header, value in pairs(req.headers) do
+                    if type(header) == "string" then
+                        headers:add(header, value)
+                    end
+                end
+            end
+        }))
+
+        return res
+
+        -- return coroutine.create(function() coroutine.yield(result) end)
+    end
+end
+
+------------------------------------------
+-------------- New Functions -------------
+------------------------------------------
+
+function SyncNinjaClient:check_activity(username, password, device_id, callback)
+    self.client:reset_middlewares()
+    self.client:enable("Format.JSON")
+    self.client:enable("GinClient")
+    self.client:enable("SyncNinjaAuth",
+                       {username = username, userkey = password})
+
+    socketutil:set_timeout(SYNC_TIMEOUTS[1], SYNC_TIMEOUTS[2])
+    local co = coroutine.create(function()
+        local ok, res = pcall(function()
+            return self.client:check_activity({device_id = device_id})
+        end)
+        if ok then
+            callback(res.status == 200, res.body)
+        else
+            logger.dbg("SyncNinjaClient:check_activity failure:", res)
+            callback(false, res.body)
+        end
+    end)
+    self.client:enable("AsyncHTTP", {thread = co})
+    coroutine.resume(co)
+    if UIManager.looper then UIManager:setInputTimeout() end
+    socketutil:reset_timeout()
+end
+
+function SyncNinjaClient:add_activity(username, password, device_id, device,
+                                      activity, callback)
+    self.client:reset_middlewares()
+    self.client:enable("Format.JSON")
+    self.client:enable("GinClient")
+    self.client:enable("SyncNinjaAuth",
+                       {username = username, userkey = password})
+
+    socketutil:set_timeout(SYNC_TIMEOUTS[1], SYNC_TIMEOUTS[2])
+    local co = coroutine.create(function()
+        local ok, res = pcall(function()
+            return self.client:add_activity({
+                device_id = device_id,
+                device = device,
+                activity = activity
+            })
+        end)
+
+        if ok then
+            callback(res.status == 200, res.body)
+        else
+            logger.dbg("SyncNinjaClient:add_activity failure:", res)
+            callback(false, res.body)
+        end
+    end)
+    self.client:enable("AsyncHTTP", {thread = co})
+    coroutine.resume(co)
+    if UIManager.looper then UIManager:setInputTimeout() end
+    socketutil:reset_timeout()
+end
+
+function SyncNinjaClient:add_documents(username, password, documents, callback)
+    self.client:reset_middlewares()
+    self.client:enable("Format.JSON")
+    self.client:enable("GinClient")
+    self.client:enable("SyncNinjaAuth",
+                       {username = username, userkey = password})
+
+    socketutil:set_timeout(SYNC_TIMEOUTS[1], SYNC_TIMEOUTS[2])
+    local co = coroutine.create(function()
+        local ok, res = pcall(function()
+            return self.client:add_documents({documents = documents})
+        end)
+        if ok then
+            callback(res.status == 200, res.body)
+        else
+            logger.dbg("SyncNinjaClient:add_documents failure:", res)(
+                "SyncNinjaClient:add_documents failure:", res)
+            callback(false, res.body)
+        end
+    end)
+    self.client:enable("AsyncHTTP", {thread = co})
+    coroutine.resume(co)
+    if UIManager.looper then UIManager:setInputTimeout() end
+    socketutil:reset_timeout()
+end
+
+function SyncNinjaClient:check_documents(username, password, device_id, device,
+                                         have, callback)
+    self.client:reset_middlewares()
+    self.client:enable("Format.JSON")
+    self.client:enable("GinClient")
+    self.client:enable("SyncNinjaAuth",
+                       {username = username, userkey = password})
+
+    socketutil:set_timeout(SYNC_TIMEOUTS[1], SYNC_TIMEOUTS[2])
+    local co = coroutine.create(function()
+        local ok, res = pcall(function()
+            return self.client:check_documents({
+                device_id = device_id,
+                device = device,
+                have = have
+            })
+        end)
+        if ok then
+            callback(res.status == 200, res.body)
+        else
+            logger.dbg("SyncNinjaClient:check_documents failure:", res)
+            callback(false, res.body)
+        end
+    end)
+    self.client:enable("AsyncHTTP", {thread = co})
+    coroutine.resume(co)
+    if UIManager.looper then UIManager:setInputTimeout() end
+    socketutil:reset_timeout()
+end
+
+function SyncNinjaClient:download_document(username, password, document,
+                                           callback)
+    self.client:reset_middlewares()
+    self.client:enable("Format.JSON")
+    self.client:enable("GinClient")
+    self.client:enable("SyncNinjaAuth",
+                       {username = username, userkey = password})
+
+    local ok, res = pcall(function()
+        return self.client:download_document({document = document})
+    end)
+    if ok then
+        callback(res.status == 200, res.body)
+    else
+        logger.dbg("SyncNinjaClient:download_document failure:", res)
+        callback(false, res.body)
+    end
+end
+
+function SyncNinjaClient:upload_document(username, password, document, file,
+                                         callback)
+    self.client:reset_middlewares()
+    self.client:enable("Format.JSON")
+    self.client:enable("GinClient")
+    self.client:enable("SyncNinjaAuth",
+                       {username = username, userkey = password})
+
+    local ok, res = pcall(function()
+        return self.client:upload_document({document = document, file = file})
+    end)
+    if ok then
+        callback(res.status == 200, res.body)
+    else
+        logger.dbg("SyncNinjaClient:upload_document failure:", res)
+        callback(false, res.body)
+    end
+end
+
+------------------------------------------
+----------- Existing Functions -----------
+------------------------------------------
+
+function SyncNinjaClient:register(username, password)
+    self.client:reset_middlewares()
+    self.client:enable("Format.JSON")
+    self.client:enable("GinClient")
+    socketutil:set_timeout(AUTH_TIMEOUTS[1], AUTH_TIMEOUTS[2])
+    local ok, res = pcall(function()
+        return self.client:register({username = username, password = password})
+    end)
+    socketutil:reset_timeout()
+    if ok then
+        return res.status == 201, res.body
+    else
+        logger.dbg("SyncNinjaClient:register failure:", res)
+        return false, res.body
+    end
+end
+
+function SyncNinjaClient:authorize(username, password)
+    self.client:reset_middlewares()
+    self.client:enable("Format.JSON")
+    self.client:enable("GinClient")
+    self.client:enable("SyncNinjaAuth",
+                       {username = username, userkey = password})
+    socketutil:set_timeout(AUTH_TIMEOUTS[1], AUTH_TIMEOUTS[2])
+    local ok, res = pcall(function() return self.client:authorize() end)
+    socketutil:reset_timeout()
+    if ok then
+        return res.status == 200, res.body
+    else
+        logger.dbg("SyncNinjaClient:authorize failure:", res)
+        return false, res.body
+    end
+end
+
+function SyncNinjaClient:update_progress(username, password, document, progress,
+                                         percentage, device, device_id, callback)
+    self.client:reset_middlewares()
+    self.client:enable("Format.JSON")
+    self.client:enable("GinClient")
+    self.client:enable("SyncNinjaAuth",
+                       {username = username, userkey = password})
+
+    socketutil:set_timeout(SYNC_TIMEOUTS[1], SYNC_TIMEOUTS[2])
+    local co = coroutine.create(function()
+        local ok, res = pcall(function()
+            return self.client:update_progress({
+                document = document,
+                progress = tostring(progress),
+                percentage = percentage,
+                device = device,
+                device_id = device_id
+            })
+        end)
+        if ok then
+            callback(res.status == 200, res.body)
+        else
+            logger.dbg("SyncNinjaClient:update_progress failure:", res)
+            callback(false, res.body)
+        end
+    end)
+    self.client:enable("AsyncHTTP", {thread = co})
+    coroutine.resume(co)
+    if UIManager.looper then UIManager:setInputTimeout() end
+    socketutil:reset_timeout()
+end
+
+function SyncNinjaClient:get_progress(username, password, document, callback)
+    self.client:reset_middlewares()
+    self.client:enable("Format.JSON")
+    self.client:enable("GinClient")
+    self.client:enable("SyncNinjaAuth",
+                       {username = username, userkey = password})
+
+    socketutil:set_timeout(SYNC_TIMEOUTS[1], SYNC_TIMEOUTS[2])
+    local co = coroutine.create(function()
+        local ok, res = pcall(function()
+            return self.client:get_progress({document = document})
+        end)
+        if ok then
+            callback(res.status == 200, res.body)
+        else
+            logger.dbg("SyncNinjaClient:get_progress failure:", res)
+            callback(false, res.body)
+        end
+    end)
+    self.client:enable("AsyncHTTP", {thread = co})
+    coroutine.resume(co)
+    if UIManager.looper then UIManager:setInputTimeout() end
+    socketutil:reset_timeout()
+end
+
+return SyncNinjaClient

client/syncninja.koplugin/_meta.lua

@@ -0,0 +1,6 @@
+local _ = require("gettext")
+return {
+    name = "syncninja",
+    fullname = _("Additional sync capabilities"),
+    description = _([[Syncs your documents and activity to an altered server.]])
+}

client/syncninja.koplugin/api.json

@@ -0,0 +1,61 @@
+{
+  "base_url": "http://127.0.0.1:8585",
+  "name": "syncninja",
+  "methods": {
+    "add_activity": {
+      "path": "/api/ko/activity",
+      "method": "POST",
+      "required_params": ["device_id", "device", "activity"],
+      "payload": ["device_id", "device", "activity"],
+      "expected_status": [200, 401]
+    },
+    "add_documents": {
+      "path": "/api/ko/documents",
+      "method": "POST",
+      "required_params": ["documents"],
+      "payload": ["documents"],
+      "expected_status": [200, 401]
+    },
+    "check_documents": {
+      "path": "/api/ko/syncs/documents",
+      "method": "POST",
+      "required_params": ["device_id", "device", "have"],
+      "payload": ["device_id", "device", "have"],
+      "expected_status": [200, 401]
+    },
+    "check_activity": {
+      "path": "/api/ko/syncs/activity",
+      "method": "POST",
+      "required_params": ["device_id"],
+      "payload": ["device_id"],
+      "expected_status": [200, 401]
+    },
+    "download_document": {
+      "path": "/api/ko/documents/:document/file",
+      "method": "GET",
+      "required_params": ["document"],
+      "expected_status": [200, 401]
+    },
+    "upload_document": {
+      "path": "/api/ko/documents/:document/file",
+      "method": "PUT",
+      "required_params": ["document", "file"],
+      "form-data": {
+        "file": "@:file"
+      },
+      "expected_status": [200, 401]
+    },
+    "authorize": {
+      "path": "/api/ko/users/auth",
+      "method": "GET",
+      "expected_status": [200, 401]
+    },
+    "register": {
+      "path": "/api/ko/users/create",
+      "method": "POST",
+      "required_params": ["username", "password"],
+      "payload": ["username", "password"],
+      "expected_status": [201, 402]
+    }
+  }
+}

client/syncninja.koplugin/main.lua

@@ -0,0 +1,953 @@
+local DataStorage = require("datastorage")
+local Device = require("device")
+local Dispatcher = require("dispatcher")
+local DocSettings = require("docsettings")
+local InfoMessage = require("ui/widget/infomessage")
+local MultiInputDialog = require("ui/widget/multiinputdialog")
+local NetworkMgr = require("ui/network/manager")
+local ReadHistory = require("readhistory")
+local SQ3 = require("lua-ljsqlite3/init")
+local T = require("ffi/util").template
+local UIManager = require("ui/uimanager")
+local WidgetContainer = require("ui/widget/container/widgetcontainer")
+local _ = require("gettext")
+local logger = require("logger")
+local md5 = require("ffi/sha2").md5
+
+-- TODO:
+--   - Handle ReadHistory missing files (statistics.sqlite3, bookinfo_cache.sqlite3)
+--   - Handle document uploads (Manual push only, warning saying this may take awhile)
+--   - Configure activity bulk size? 1000, 5000, 10000? Separate manual settings to upload ALL?
+
+------------------------------------------
+------------ Helper Functions ------------
+------------------------------------------
+local function dump(o)
+    if type(o) == 'table' then
+        local s = '{ '
+        for k, v in pairs(o) do
+            if type(k) ~= 'number' then k = '"' .. k .. '"' end
+            s = s .. '[' .. k .. '] = ' .. dump(v) .. ','
+        end
+        return s .. '} '
+    else
+        return tostring(o)
+    end
+end
+
+local function validate(entry)
+    if not entry then return false end
+    if type(entry) == "string" then
+        if entry == "" or not entry:match("%S") then return false end
+    end
+    return true
+end
+
+local function validateUser(user, pass)
+    local error_message = nil
+    local user_ok = validate(user)
+    local pass_ok = validate(pass)
+    if not user_ok and not pass_ok then
+        error_message = _("invalid username and password")
+    elseif not user_ok then
+        error_message = _("invalid username")
+    elseif not pass_ok then
+        error_message = _("invalid password")
+    end
+
+    if not error_message then
+        return user_ok and pass_ok
+    else
+        return user_ok and pass_ok, error_message
+    end
+end
+
+------------------------------------------
+-------------- Plugin Start --------------
+------------------------------------------
+local MERGE_SETTINGS_IN = "IN"
+local MERGE_SETTINGS_OUT = "OUT"
+
+local STATISTICS_ACTIVITY_SINCE_QUERY = [[
+    SELECT
+	b.md5 AS document,
+	psd.start_time AS start_time,
+	psd.duration AS duration,
+	psd.page AS current_page,
+	psd.total_pages 
+    FROM page_stat_data AS psd
+    JOIN book AS b 
+    ON b.id = psd.id_book
+    WHERE start_time > %d
+    ORDER BY start_time ASC LIMIT 1000;
+]]
+
+local STATISTICS_BOOK_QUERY = [[
+    SELECT
+	md5,
+	title,
+	authors,
+	series,
+	language
+      FROM book;
+]]
+
+local BOOKINFO_BOOK_QUERY = [[
+    SELECT
+	(directory || filename) as filepath,
+	title,
+	authors,
+	series,
+	series_index,
+	language,
+	description
+    FROM bookinfo;
+]]
+
+-- Validate Device ID Exists
+if G_reader_settings:hasNot("device_id") then
+    G_reader_settings:saveSetting("device_id", random.uuid())
+end
+
+-- Define DB Location
+local statistics_db = DataStorage:getSettingsDir() .. "/statistics.sqlite3"
+local bookinfo_db = DataStorage:getSettingsDir() .. "/bookinfo_cache.sqlite3"
+
+local SyncNinja = WidgetContainer:extend{
+    name = "syncninja",
+    settings = nil,
+    is_doc_only = false
+}
+
+SyncNinja.default_settings = {
+    server = nil,
+    username = nil,
+    password = nil,
+    sync_frequency = 30,
+    sync_activity = true,
+    sync_documents = true,
+    sync_document_files = true
+}
+
+function SyncNinja:init()
+    logger.dbg("SyncNinja: init")
+
+    -- Instance Specific (Non Interactive)
+    self.periodic_push_task = function() self:performSync(false) end
+
+    -- Load Settings
+    self.device_id = G_reader_settings:readSetting("device_id")
+    self.settings = G_reader_settings:readSetting("syncninja",
+                                                  self.default_settings)
+
+    -- Register Menu Items
+    self.ui.menu:registerToMainMenu(self)
+
+    -- Initial Periodic Push Schedule (5 Minutes)
+    self:schedulePeriodicPush(5)
+end
+
+------------------------------------------
+-------------- UX Functions --------------
+------------------------------------------
+function SyncNinja:addToMainMenu(menu_items)
+    logger.dbg("SyncNinja: addToMainMenu")
+    menu_items.syncninja = {
+        text = _("Sync Ninja"),
+        sorting_hint = "tools",
+        sub_item_table = {
+            {
+                text = _("Sync Server"),
+                keep_menu_open = true,
+                tap_input_func = function(menu)
+                    return {
+                        title = _("Sync server address"),
+                        input = self.settings.server or "https://",
+                        type = "text",
+                        callback = function(input)
+                            self.settings.server = input ~= "" and input or nil
+                            if menu then
+                                menu:updateItems()
+                            end
+                        end
+                    }
+                end
+            }, {
+                text_func = function()
+                    return self.settings.password and (_("Logout")) or
+                               _("Register") .. " / " .. _("Login")
+                end,
+                enabled_func = function()
+                    return self.settings.server ~= nil
+                end,
+                keep_menu_open = true,
+                callback_func = function()
+                    if self.settings.password then
+                        return function(menu)
+                            self:logoutUI(menu)
+                        end
+                    else
+                        return function(menu)
+                            self:loginUI(menu)
+                        end
+                    end
+                end
+            }, {
+                text = _("Manual Sync"),
+                keep_menu_open = true,
+                enabled_func = function()
+                    return self.settings.password ~= nil and
+                               self.settings.username ~= nil and
+                               self.settings.server ~= nil
+                end,
+                callback = function()
+                    UIManager:unschedule(self.performSync)
+                    self:performSync(true) -- Interactive
+                end
+            }, {
+                text = _("KOSync Auth Merge"),
+                sub_item_table = {
+                    {
+                        text = _("KOSync Merge In"),
+                        keep_menu_open = true,
+                        callback = function()
+                            self:mergeKOSync(MERGE_SETTINGS_IN)
+                        end
+                    }, {
+                        text = _("KOSync Merge Out"),
+                        keep_menu_open = true,
+                        callback = function()
+                            self:mergeKOSync(MERGE_SETTINGS_OUT)
+                        end
+                    }
+
+                },
+                separator = true
+            }, {
+                text_func = function()
+                    return T(_("Sync Frequency (%1 Minutes)"),
+                             self.settings.sync_frequency or 30)
+                end,
+                keep_menu_open = true,
+                callback = function(touchmenu_instance)
+                    local SpinWidget = require("ui/widget/spinwidget")
+                    local items = SpinWidget:new{
+                        text = _(
+                            [[This value determines the cadence at which the syncs will be performed.
+If set to 0, periodic sync will be disabled.]]),
+                        value = self.settings.sync_frequency or 30,
+                        value_min = 0,
+                        value_max = 1440,
+                        value_step = 30,
+                        value_hold_step = 60,
+                        ok_text = _("Set"),
+                        title_text = _("Minutes between syncs"),
+                        default_value = 30,
+                        callback = function(spin)
+                            self.settings.sync_frequency = spin.value > 0 and
+                                                               spin.value or 30
+                            if touchmenu_instance then
+                                touchmenu_instance:updateItems()
+                            end
+                            self:schedulePeriodicPush()
+                        end
+                    }
+                    UIManager:show(items)
+                end
+            }, {
+                text_func = function()
+                    return T(_("Sync Activity (%1)"), self.settings
+                                 .sync_activity == true and (_("Enabled")) or
+                                 (_("Disabled")))
+                end,
+                sub_item_table = {
+                    {
+                        text = _("Enabled"),
+                        checked_func = function()
+                            return self.settings.sync_activity == true
+                        end,
+                        callback = function()
+                            self.settings.sync_activity = true
+                        end
+                    }, {
+                        text = _("Disabled"),
+                        checked_func = function()
+                            return self.settings.sync_activity ~= true
+                        end,
+                        callback = function()
+                            self.settings.sync_activity = false
+                        end
+                    }
+                }
+            }, {
+                text_func = function()
+                    return T(_("Sync Documents (%1)"), self.settings
+                                 .sync_documents == true and (_("Enabled")) or
+                                 (_("Disabled")))
+                end,
+                sub_item_table = {
+                    {
+                        text = _("Enabled"),
+                        checked_func = function()
+                            return self.settings.sync_documents == true
+                        end,
+                        callback = function()
+                            self.settings.sync_documents = true
+                        end
+                    }, {
+                        text = _("Disabled"),
+                        checked_func = function()
+                            return self.settings.sync_documents ~= true
+                        end,
+                        callback = function()
+                            self.settings.sync_documents = false
+                        end
+                    }
+                }
+            }, {
+                text_func = function()
+                    return T(_("Sync Document Files (%1)"),
+                             self.settings.sync_documents == true and
+                                 self.settings.sync_document_files == true and
+                                 (_("Enabled")) or (_("Disabled")))
+                end,
+                enabled_func = function()
+                    return self.settings.sync_documents == true
+                end,
+                sub_item_table = {
+                    {
+                        text = _("Enabled"),
+                        checked_func = function()
+                            return self.settings.sync_document_files == true
+                        end,
+                        callback = function()
+                            self.settings.sync_document_files = true
+                        end
+                    }, {
+                        text = _("Disabled"),
+                        checked_func = function()
+                            return self.settings.sync_document_files ~= true
+                        end,
+                        callback = function()
+                            self.settings.sync_document_files = false
+                        end
+                    }
+                }
+            }
+        }
+    }
+end
+
+function SyncNinja:loginUI(menu)
+    logger.dbg("SyncNinja: loginUI")
+    if NetworkMgr:willRerunWhenOnline(function() self:loginUI(menu) end) then
+        return
+    end
+
+    local dialog
+    dialog = MultiInputDialog:new{
+        title = _("Register/login to SyncNinja server"),
+        fields = {
+            {text = self.settings.username, hint = "username"},
+            {hint = "password", text_type = "password"}
+        },
+        buttons = {
+            {
+                {
+                    text = _("Cancel"),
+                    id = "close",
+                    callback = function()
+                        UIManager:close(dialog)
+                    end
+                }, {
+                    text = _("Login"),
+                    callback = function()
+                        local username, password = unpack(dialog:getFields())
+                        local ok, err = validateUser(username, password)
+                        if not ok then
+                            UIManager:show(InfoMessage:new{
+                                text = T(_("Cannot login: %1"), err),
+                                timeout = 2
+                            })
+                        else
+                            UIManager:close(dialog)
+                            UIManager:scheduleIn(0.5, function()
+                                self:userLogin(username, password, menu)
+                            end)
+                            UIManager:show(InfoMessage:new{
+                                text = _("Logging in. Please wait…"),
+                                timeout = 1
+                            })
+                        end
+                    end
+                }, {
+                    text = _("Register"),
+                    callback = function()
+                        local username, password = unpack(dialog:getFields())
+                        local ok, err = validateUser(username, password)
+                        if not ok then
+                            UIManager:show(InfoMessage:new{
+                                text = T(_("Cannot register: %1"), err),
+                                timeout = 2
+                            })
+                        else
+                            UIManager:close(dialog)
+                            UIManager:scheduleIn(0.5, function()
+                                self:userRegister(username, password, menu)
+                            end)
+                            UIManager:show(InfoMessage:new{
+                                text = _("Registering. Please wait…"),
+                                timeout = 1
+                            })
+                        end
+                    end
+                }
+            }
+        }
+    }
+    UIManager:show(dialog)
+    dialog:onShowKeyboard()
+end
+
+function SyncNinja:logoutUI(menu)
+    logger.dbg("SyncNinja: logoutUI")
+    self.settings.username = nil
+    self.settings.password = nil
+    if menu then menu:updateItems() end
+    UIManager:unschedule(self.periodic_push_task)
+end
+
+function SyncNinja:mergeKOSync(direction)
+    logger.dbg("SyncNinja: mergeKOSync")
+    local kosync_settings = G_reader_settings:readSetting("kosync")
+    if kosync_settings == nil then return end
+
+    if direction == MERGE_SETTINGS_OUT then
+        -- Validate Configured
+        if not self.settings.server or not self.settings.username or
+            not self.settings.password then
+            return UIManager:show(InfoMessage:new{
+                text = _("Error: SyncNinja not configured")
+            })
+        end
+
+        kosync_settings.custom_server = self.settings.server ..
+                                            (self.settings.server:sub(-#"/") ==
+                                                "/" and "api/ko" or "/api/ko")
+        kosync_settings.username = self.settings.username
+        kosync_settings.userkey = self.settings.password
+
+        UIManager:show(InfoMessage:new{text = _("Synced to KOSync")})
+    elseif direction == MERGE_SETTINGS_IN then
+        -- Validate Configured
+        if not kosync_settings.custom_server or not kosync_settings.username or
+            not kosync_settings.userkey then
+            return UIManager:show(InfoMessage:new{
+                text = _("Error: KOSync not configured")
+            })
+        end
+
+        -- Validate Compatible Server
+        if kosync_settings.custom_server:sub(-#"/api/ko") ~= "/api/ko" and
+            kosync_settings.custom_server:sub(-#"/api/ko/") ~= "/api/ko/" then
+            return UIManager:show(InfoMessage:new{
+                text = _("Error: Configured KOSync server not compatible")
+            })
+        end
+
+        self.settings.server = string.gsub(kosync_settings.custom_server,
+                                           "/api/ko/?$", "")
+        self.settings.username = kosync_settings.username
+        self.settings.password = kosync_settings.userkey
+
+        UIManager:show(InfoMessage:new{text = _("Synced from KOSync")})
+    end
+end
+
+------------------------------------------
+------------- Login Functions ------------
+------------------------------------------
+function SyncNinja:userLogin(username, password, menu)
+    logger.dbg("SyncNinja: userLogin")
+    if not self.settings.server then return end
+
+    local SyncNinjaClient = require("SyncNinjaClient")
+    local client = SyncNinjaClient:new{
+        custom_url = self.settings.server,
+        service_spec = self.path .. "/api.json"
+    }
+    Device:setIgnoreInput(true)
+    local userkey = md5(password)
+    local ok, status, body = pcall(client.authorize, client, username, userkey)
+    if not ok then
+        if status then
+            UIManager:show(InfoMessage:new{
+                text = _("An error occurred while logging in:") .. "\n" ..
+                    status
+            })
+        else
+            UIManager:show(InfoMessage:new{
+                text = _("An unknown error occurred while logging in.")
+            })
+        end
+        Device:setIgnoreInput(false)
+        return
+    elseif status then
+        self.settings.username = username
+        self.settings.password = userkey
+        if menu then menu:updateItems() end
+        UIManager:show(InfoMessage:new{
+            text = _("Logged in to KOReader server.")
+        })
+
+        self:schedulePeriodicPush(0)
+    else
+        logger.dbg("SyncNinja: userLogin Error:", dump(body))
+    end
+    Device:setIgnoreInput(false)
+end
+
+function SyncNinja:userRegister(username, password, menu)
+    logger.dbg("SyncNinja: userRegister")
+    if not self.settings.server then return end
+
+    local SyncNinjaClient = require("SyncNinjaClient")
+    local client = SyncNinjaClient:new{
+        custom_url = self.settings.server,
+        service_spec = self.path .. "/api.json"
+    }
+    -- on Android to avoid ANR (no-op on other platforms)
+    Device:setIgnoreInput(true)
+    local userkey = md5(password)
+    local ok, status, body = pcall(client.register, client, username, userkey)
+    if not ok then
+        if status then
+            UIManager:show(InfoMessage:new{
+                text = _("An error occurred while registering:") .. "\n" ..
+                    status
+            })
+        else
+            UIManager:show(InfoMessage:new{
+                text = _("An unknown error occurred while registering.")
+            })
+        end
+    elseif status then
+        self.settings.username = username
+        self.settings.password = userkey
+        if menu then menu:updateItems() end
+        UIManager:show(InfoMessage:new{
+            text = _("Registered to KOReader server.")
+        })
+
+        self:schedulePeriodicPush(0)
+    else
+        UIManager:show(InfoMessage:new{
+            text = body and body.message or _("Unknown server error")
+        })
+    end
+    Device:setIgnoreInput(false)
+end
+
+------------------------------------------
+------------- Sync Functions -------------
+------------------------------------------
+function SyncNinja:schedulePeriodicPush(minutes)
+    logger.dbg("SyncNinja: schedulePeriodicPush")
+
+    -- Validate Configured
+    if not self.settings then return end
+    if not self.settings.username then return end
+    if not self.settings.password then return end
+    if not self.settings.server then return end
+
+    -- Unschedule & Schedule
+    local sync_frequency = minutes or self.settings.sync_frequency or 30
+    UIManager:unschedule(self.periodic_push_task)
+    UIManager:scheduleIn(60 * sync_frequency, self.periodic_push_task)
+end
+
+function SyncNinja:performSync(interactive)
+    logger.dbg("SyncNinja: performSync")
+
+    -- Upload Activity & Check Documents
+    self:checkActivity(interactive)
+    self:checkDocuments(interactive)
+
+    if interactive == true then
+        UIManager:show(InfoMessage:new{
+            text = _("SyncNinja: Manual Sync Success"),
+            timeout = 3
+        })
+    end
+
+    -- Schedule Push Again
+    self:schedulePeriodicPush()
+end
+
+function SyncNinja:checkActivity(interactive)
+    logger.dbg("SyncNinja: checkActivity")
+
+    -- Ensure Activity Sync Enabled
+    if self.settings.sync_activity ~= true then return end
+
+    -- API Callback Function
+    local callback_func = function(ok, body)
+        if not ok then
+            -- TODO: if interactive
+            UIManager:show(InfoMessage:new{
+                text = _("SyncNinja: checkActivity Error"),
+                timeout = 3
+            })
+            return logger.dbg("SyncNinja: checkActivity Error:", dump(body))
+        end
+
+        local last_sync = body.last_sync
+        local activity_data = self:getStatisticsActivity(last_sync)
+
+        -- Activity Data Exists
+        if not (next(activity_data) == nil) then
+            self:uploadActivity(activity_data, interactive)
+        end
+    end
+
+    -- API Call
+    local SyncNinjaClient = require("SyncNinjaClient")
+    local client = SyncNinjaClient:new{
+        custom_url = self.settings.server,
+        service_spec = self.path .. "/api.json"
+    }
+    local ok, err = pcall(client.check_activity, client, self.settings.username,
+                          self.settings.password, self.device_id, callback_func)
+end
+
+function SyncNinja:uploadActivity(activity_data, interactive)
+    logger.dbg("SyncNinja: uploadActivity")
+
+    -- API Callback Function
+    local callback_func = function(ok, body)
+        if not ok then
+            -- TODO: if interactive
+            UIManager:show(InfoMessage:new{
+                text = _("SyncNinja: uploadActivity Error"),
+                timeout = 3
+            })
+
+            return logger.dbg("SyncNinja: uploadActivity Error:", dump(body))
+        end
+    end
+
+    -- API Call
+    local SyncNinjaClient = require("SyncNinjaClient")
+    local client = SyncNinjaClient:new{
+        custom_url = self.settings.server,
+        service_spec = self.path .. "/api.json"
+    }
+    local ok, err = pcall(client.add_activity, client, self.settings.username,
+                          self.settings.password, self.device_id, Device.model,
+                          activity_data, callback_func)
+end
+
+function SyncNinja:checkDocuments(interactive)
+    logger.dbg("SyncNinja: checkDocuments")
+
+    -- ensure document sync enabled
+    if self.settings.sync_documents ~= true then return end
+
+    -- API Request Data
+    local doc_metadata = self:getLocalDocumentMetadata()
+    local doc_ids = self:getLocalDocumentIDs(doc_metadata)
+
+    -- API Callback Function
+    local callback_func = function(ok, body)
+        if not ok then
+            -- TODO: if interactive
+            UIManager:show(InfoMessage:new{
+                text = _("SyncNinja: checkDocuments Error"),
+                timeout = 3
+            })
+            return logger.dbg("SyncNinja: checkDocuments Error:", dump(body))
+        end
+
+        -- Documents Wanted
+        if not (next(body.want) == nil) then
+            local hash_want = {}
+            for _, v in pairs(body.want) do hash_want[v] = true end
+
+            local upload_doc_metadata = {}
+            for _, v in pairs(doc_metadata) do
+                if hash_want[v.id] == true then
+                    table.insert(upload_doc_metadata, v)
+                end
+            end
+
+            self:uploadDocuments(upload_doc_metadata, interactive)
+        end
+
+        -- Documents Provided
+        if not (next(body.give) == nil) then
+            self:downloadDocuments(body.give, interactive)
+        end
+    end
+
+    -- API Call
+    local SyncNinjaClient = require("SyncNinjaClient")
+    local client = SyncNinjaClient:new{
+        custom_url = self.settings.server,
+        service_spec = self.path .. "/api.json"
+    }
+    local ok, err = pcall(client.check_documents, client,
+                          self.settings.username, self.settings.password,
+                          self.device_id, Device.model, doc_ids, callback_func)
+end
+
+function SyncNinja:downloadDocuments(doc_metadata, interactive)
+    logger.dbg("SyncNinja: downloadDocuments")
+
+    -- TODO
+end
+
+function SyncNinja:uploadDocuments(doc_metadata, interactive)
+    logger.dbg("SyncNinja: uploadDocuments")
+
+    -- Ensure Document Sync Enabled
+    if self.settings.sync_documents ~= true then return end
+
+    -- API Callback Function
+    local callback_func = function(ok, body)
+        if not ok then
+            -- TODO: if interactive
+            UIManager:show(InfoMessage:new{
+                text = _("SyncNinja: uploadDocuments Error"),
+                timeout = 3
+            })
+            return logger.dbg("SyncNinja: uploadDocuments Error:", dump(body))
+        end
+    end
+
+    -- API Client
+    local SyncNinjaClient = require("SyncNinjaClient")
+    local client = SyncNinjaClient:new{
+        custom_url = self.settings.server,
+        service_spec = self.path .. "/api.json"
+    }
+
+    -- API Initial Metadata
+    local ok, err = pcall(client.add_documents, client, self.settings.username,
+                          self.settings.password, doc_metadata, callback_func)
+
+    -- Ensure Document File Sync Enabled
+    if self.settings.sync_document_files ~= true then return end
+    if interactive ~= true then return end
+
+    -- API File Upload
+    local confirm_upload_callback = function()
+        for _, v in pairs(doc_metadata) do
+            if v.filepath ~= nil then
+                local ok, err = pcall(client.upload_document, client,
+                                      self.settings.username,
+                                      self.settings.password, v.id, v.filepath,
+                                      callback_func)
+            end
+        end
+    end
+
+    UIManager:show(ConfirmBox:new{
+        text = _("Upload documents? This can take awhile."),
+        ok_text = _("Yes"),
+        ok_callback = confirm_upload_callback
+    })
+end
+
+------------------------------------------
+------------ Getter Functions ------------
+------------------------------------------
+function SyncNinja:getLocalDocumentIDs(doc_metadata)
+    logger.dbg("SyncNinja: getLocalDocumentIDs")
+
+    local document_ids = {}
+
+    if doc_metadata == nil then
+        doc_metadata = self:getLocalDocumentMetadata()
+    end
+
+    for _, v in pairs(doc_metadata) do table.insert(document_ids, v.id) end
+
+    return document_ids
+end
+
+function SyncNinja:getLocalDocumentMetadata()
+    logger.dbg("SyncNinja: getLocalDocumentMetadata")
+
+    local all_documents = {}
+
+    local documents_kv = self:getStatisticsBookKV()
+    local bookinfo_books = self:getBookInfoBookKV()
+
+    for _, v in pairs(ReadHistory.hist) do
+        if DocSettings:hasSidecarFile(v.file) then
+            local docsettings = DocSettings:open(v.file)
+
+            -- Ensure Partial MD5 Exists
+            local pmd5 = docsettings:readSetting("partial_md5_checksum")
+            if not pmd5 then
+                pmd5 = self:getPartialMd5(v.file)
+                docsettings:saveSetting("partial_md5_checksum", pmd5)
+            end
+
+            -- Get Document Props
+            local doc_props = docsettings:readSetting("doc_props")
+            local fdoc = bookinfo_books[v.file] or {}
+
+            -- Update or Create
+            if documents_kv[pmd5] ~= nil then
+                local doc = documents_kv[pmd5]
+
+                -- Merge Statistics, History, and BookInfo
+                doc.title = doc.title or doc_props.title or fdoc.title
+                doc.author = doc.author or doc_props.authors or fdoc.author
+                doc.series = doc.series or doc_props.series or fdoc.series
+                doc.lang = doc.lang or doc_props.language or fdoc.lang
+
+                -- Merge History and BookInfo
+                doc.series_index = doc_props.series_index or fdoc.series_index
+                doc.description = doc_props.description or fdoc.description
+                doc.filepath = v.file
+            else
+                -- Merge History and BookInfo
+                documents_kv[pmd5] = {
+                    title = doc_props.title or fdoc.title,
+                    author = doc_props.authors or fdoc.author,
+                    series = doc_props.series or fdoc.series,
+                    series_index = doc_props.series_index or fdoc.series_index,
+                    lang = doc_props.language or fdoc.lang,
+                    description = doc_props.description or fdoc.description,
+                    filepath = v.file
+                }
+            end
+        end
+    end
+
+    -- Convert KV -> Array
+    for pmd5, v in pairs(documents_kv) do
+        table.insert(all_documents, {
+            id = pmd5,
+            title = v.title,
+            author = v.author,
+            series = v.series,
+            series_index = v.series_index,
+            lang = v.lang,
+            description = v.description,
+            filepath = v.filepath
+        })
+    end
+
+    return all_documents
+end
+
+function SyncNinja:getStatisticsActivity(timestamp)
+    logger.dbg("SyncNinja: getStatisticsActivity")
+
+    local all_data = {}
+    local conn = SQ3.open(statistics_db)
+    local stmt = conn:prepare(string.format(STATISTICS_ACTIVITY_SINCE_QUERY,
+                                            timestamp))
+    local rows = stmt:resultset("i", 1000)
+    conn:close()
+
+    -- No Results
+    if rows == nil then return all_data end
+
+    -- Normalize
+    for i, v in pairs(rows[1]) do
+        table.insert(all_data, {
+            document = rows[1][i],
+            start_time = tonumber(rows[2][i]),
+            duration = tonumber(rows[3][i]),
+            current_page = tonumber(rows[4][i]),
+            total_pages = tonumber(rows[5][i])
+        })
+    end
+
+    return all_data
+end
+
+-- Returns KEY:VAL (MD5:<TABLE>)
+function SyncNinja:getStatisticsBookKV()
+    logger.dbg("SyncNinja: getStatisticsBookKV")
+
+    local all_data = {}
+    local conn = SQ3.open(statistics_db)
+    local stmt = conn:prepare(STATISTICS_BOOK_QUERY)
+    local rows = stmt:resultset("i", 1000)
+    conn:close()
+
+    -- No Results
+    if rows == nil then return all_data end
+
+    -- Normalize
+    for i, v in pairs(rows[1]) do
+        local pmd5 = rows[1][i]
+        all_data[pmd5] = {
+            title = rows[2][i],
+            author = rows[3][i],
+            series = rows[4][i],
+            lang = rows[5][i]
+        }
+    end
+
+    return all_data
+end
+
+-- Returns KEY:VAL (FILEPATH:<TABLE>)
+function SyncNinja:getBookInfoBookKV()
+    logger.dbg("SyncNinja: getBookInfoBookKV")
+
+    local all_data = {}
+    local conn = SQ3.open(bookinfo_db)
+    local stmt = conn:prepare(BOOKINFO_BOOK_QUERY)
+    local rows = stmt:resultset("i", 1000)
+    conn:close()
+
+    -- No Results
+    if rows == nil then return all_data end
+
+    -- Normalize
+    for i, v in pairs(rows[1]) do
+        filepath = rows[1][i]
+        all_data[filepath] = {
+            title = rows[2][i],
+            author = rows[3][i],
+            series = rows[4][i],
+            series_index = tonumber(rows[5][i]),
+            lang = rows[6][i],
+            description = rows[7][i]
+        }
+    end
+
+    return all_data
+end
+
+function SyncNinja:getPartialMd5(file)
+    logger.dbg("SyncNinja: getPartialMd5")
+
+    if file == nil then return nil end
+    local bit = require("bit")
+    local lshift = bit.lshift
+    local step, size = 1024, 1024
+    local update = md5()
+    local file_handle = io.open(file, 'rb')
+    if file_handle == nil then return nil end
+    for i = -1, 10 do
+        file_handle:seek("set", lshift(step, 2 * i))
+        local sample = file_handle:read(size)
+        if sample then
+            update(sample)
+        else
+            break
+        end
+    end
+    file_handle:close()
+    return update()
+end
+
+return SyncNinja

cmd/main.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"os"
+	"os/signal"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/urfave/cli/v2"
+	"reichard.io/bbank/server"
+)
+
+type UTCFormatter struct {
+	log.Formatter
+}
+
+func (u UTCFormatter) Format(e *log.Entry) ([]byte, error) {
+	e.Time = e.Time.UTC()
+	return u.Formatter.Format(e)
+}
+
+func main() {
+	log.SetFormatter(UTCFormatter{&log.TextFormatter{FullTimestamp: true}})
+
+	app := &cli.App{
+		Name:  "Book Bank",
+		Usage: "A self hosted e-book progress tracker.",
+		Commands: []*cli.Command{
+			{
+				Name:    "serve",
+				Aliases: []string{"s"},
+				Usage:   "Start Book Bank web server.",
+				Action:  cmdServer,
+			},
+		},
+	}
+	err := app.Run(os.Args)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func cmdServer(ctx *cli.Context) error {
+	log.Info("Starting Book Bank Server")
+	server := server.NewServer()
+	server.StartServer()
+
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, os.Interrupt)
+	<-c
+
+	server.StopServer()
+	os.Exit(0)
+
+	return nil
+}

config/config.go

@@ -0,0 +1,34 @@
+package config
+
+import (
+	"os"
+)
+
+type Config struct {
+	DBType     string
+	DBName     string
+	DBPassword string
+	ConfigPath string
+	DataPath   string
+	ListenPort string
+	Version    string
+}
+
+func Load() *Config {
+	return &Config{
+		DBType:     getEnv("DATABASE_TYPE", "SQLite"),
+		DBName:     getEnv("DATABASE_NAME", "bbank"),
+		DBPassword: getEnv("DATABASE_PASSWORD", ""),
+		ConfigPath: getEnv("CONFIG_PATH", "/config"),
+		DataPath:   getEnv("DATA_PATH", "/data"),
+		ListenPort: getEnv("LISTEN_PORT", "8585"),
+		Version:    "0.0.1",
+	}
+}
+
+func getEnv(key, fallback string) string {
+	if value, ok := os.LookupEnv(key); ok {
+		return value
+	}
+	return fallback
+}

database/db.go

@@ -0,0 +1,31 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.21.0
+
+package database
+
+import (
+	"context"
+	"database/sql"
+)
+
+type DBTX interface {
+	ExecContext(context.Context, string, ...interface{}) (sql.Result, error)
+	PrepareContext(context.Context, string) (*sql.Stmt, error)
+	QueryContext(context.Context, string, ...interface{}) (*sql.Rows, error)
+	QueryRowContext(context.Context, string, ...interface{}) *sql.Row
+}
+
+func New(db DBTX) *Queries {
+	return &Queries{db: db}
+}
+
+type Queries struct {
+	db DBTX
+}
+
+func (q *Queries) WithTx(tx *sql.Tx) *Queries {
+	return &Queries{
+		db: tx,
+	}
+}

database/manager.go

@@ -0,0 +1,66 @@
+package database
+
+import (
+	"context"
+	"database/sql"
+	_ "embed"
+	"path"
+
+	sqlite "github.com/mattn/go-sqlite3"
+	log "github.com/sirupsen/logrus"
+	"reichard.io/bbank/config"
+)
+
+type DBManager struct {
+	DB      *sql.DB
+	Ctx     context.Context
+	Queries *Queries
+}
+
+//go:embed schema.sql
+var ddl string
+
+func foobar() string {
+	log.Info("WTF")
+	return ""
+}
+
+func NewMgr(c *config.Config) *DBManager {
+	// Create Manager
+	dbm := &DBManager{
+		Ctx: context.Background(),
+	}
+
+	// Create Database
+	if c.DBType == "SQLite" {
+
+		sql.Register("sqlite3_custom", &sqlite.SQLiteDriver{
+			ConnectHook: func(conn *sqlite.SQLiteConn) error {
+				if err := conn.RegisterFunc("test_func", foobar, false); err != nil {
+					log.Info("Error Registering")
+					return err
+				}
+				return nil
+			},
+		})
+
+		dbLocation := path.Join(c.ConfigPath, "bbank.db")
+
+		var err error
+		dbm.DB, err = sql.Open("sqlite3_custom", dbLocation)
+		if err != nil {
+			log.Fatal(err)
+		}
+	} else {
+		log.Fatal("Unsupported Database")
+	}
+
+	// Create Tables
+	if _, err := dbm.DB.ExecContext(dbm.Ctx, ddl); err != nil {
+		log.Fatal(err)
+	}
+
+	dbm.Queries = New(dbm.DB)
+
+	return dbm
+}

database/models.go

@@ -0,0 +1,79 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.21.0
+
+package database
+
+import (
+	"time"
+)
+
+type Activity struct {
+	ID          int64     `json:"id"`
+	UserID      string    `json:"user_id"`
+	DocumentID  string    `json:"document_id"`
+	DeviceID    string    `json:"device_id"`
+	StartTime   time.Time `json:"start_time"`
+	Duration    int64     `json:"duration"`
+	CurrentPage int64     `json:"current_page"`
+	TotalPages  int64     `json:"total_pages"`
+	CreatedAt   time.Time `json:"created_at"`
+}
+
+type Device struct {
+	ID         string    `json:"id"`
+	UserID     string    `json:"user_id"`
+	DeviceName string    `json:"device_name"`
+	CreatedAt  time.Time `json:"created_at"`
+	Sync       bool      `json:"sync"`
+}
+
+type Document struct {
+	ID          string    `json:"id"`
+	Md5         *string   `json:"md5"`
+	Filepath    *string   `json:"filepath"`
+	Title       *string   `json:"title"`
+	Author      *string   `json:"author"`
+	Series      *string   `json:"series"`
+	SeriesIndex *int64    `json:"series_index"`
+	Lang        *string   `json:"lang"`
+	Description *string   `json:"description"`
+	Olid        *string   `json:"-"`
+	Synced      bool      `json:"-"`
+	Deleted     bool      `json:"-"`
+	UpdatedAt   time.Time `json:"updated_at"`
+	CreatedAt   time.Time `json:"created_at"`
+}
+
+type DocumentDeviceSync struct {
+	UserID     string    `json:"user_id"`
+	DocumentID string    `json:"document_id"`
+	DeviceID   string    `json:"device_id"`
+	LastSynced time.Time `json:"last_synced"`
+	Sync       bool      `json:"sync"`
+}
+
+type DocumentProgress struct {
+	UserID     string    `json:"user_id"`
+	DocumentID string    `json:"document_id"`
+	DeviceID   string    `json:"device_id"`
+	Percentage float64   `json:"percentage"`
+	Progress   string    `json:"progress"`
+	CreatedAt  time.Time `json:"created_at"`
+}
+
+type RescaledActivity struct {
+	DocumentID string    `json:"document_id"`
+	DeviceID   string    `json:"device_id"`
+	UserID     string    `json:"user_id"`
+	StartTime  time.Time `json:"start_time"`
+	Page       int64     `json:"page"`
+	Duration   int64     `json:"duration"`
+}
+
+type User struct {
+	ID        string    `json:"id"`
+	Pass      string    `json:"-"`
+	Admin     bool      `json:"-"`
+	CreatedAt time.Time `json:"created_at"`
+}

database/query.sql

@@ -0,0 +1,427 @@
+-- name: CreateUser :execrows
+INSERT INTO users (id, pass)
+VALUES (?, ?)
+ON CONFLICT DO NOTHING;
+
+-- name: GetUser :one
+SELECT * FROM users
+WHERE id = $user_id LIMIT 1;
+
+-- name: UpsertDocument :one
+INSERT INTO documents (
+    id,
+    md5,
+    filepath,
+    title,
+    author,
+    series,
+    series_index,
+    lang,
+    description,
+    olid
+)
+VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+ON CONFLICT DO UPDATE
+SET
+    md5 =           COALESCE(excluded.md5, md5),
+    filepath =      COALESCE(excluded.filepath, filepath),
+    title =         COALESCE(excluded.title, title),
+    author =        COALESCE(excluded.author, author),
+    series =        COALESCE(excluded.series, series),
+    series_index =  COALESCE(excluded.series_index, series_index),
+    lang =          COALESCE(excluded.lang, lang),
+    description =   COALESCE(excluded.description, description),
+    olid =          COALESCE(excluded.olid, olid)
+RETURNING *;
+
+-- name: DeleteDocument :execrows
+UPDATE documents
+SET
+    deleted = 1
+WHERE id = $id;
+
+-- name: UpdateDocumentSync :one
+UPDATE documents
+SET
+    synced = $synced
+WHERE id = $id
+RETURNING *;
+
+-- name: UpdateDocumentDeleted :one
+UPDATE documents
+SET
+  deleted = $deleted
+WHERE id = $id
+RETURNING *;
+
+-- name: GetDocument :one
+SELECT * FROM documents
+WHERE id = $document_id LIMIT 1;
+
+-- name: UpsertDevice :one
+INSERT INTO devices (id, user_id, device_name)
+VALUES (?, ?, ?)
+ON CONFLICT DO UPDATE
+SET
+    device_name = COALESCE(excluded.device_name, device_name)
+RETURNING *;
+
+-- name: GetDevice :one
+SELECT * FROM devices
+WHERE id = $device_id LIMIT 1;
+
+-- name: UpdateProgress :one
+INSERT OR REPLACE INTO document_progress (
+    user_id,
+    document_id,
+    device_id,
+    percentage,
+    progress
+)
+VALUES (?, ?, ?, ?, ?)
+RETURNING *;
+
+-- name: GetProgress :one
+SELECT
+    document_progress.*,
+    devices.device_name
+FROM document_progress
+JOIN devices ON document_progress.device_id = devices.id
+WHERE
+    document_progress.user_id = $user_id
+    AND document_progress.document_id = $document_id
+ORDER BY
+    document_progress.created_at
+    DESC
+LIMIT 1;
+
+-- name: GetLastActivity :one
+SELECT start_time
+FROM activity
+WHERE device_id = $device_id
+AND user_id = $user_id
+ORDER BY start_time DESC LIMIT 1;
+
+-- name: AddActivity :one
+INSERT INTO activity (
+    user_id,
+    document_id,
+    device_id,
+    start_time,
+    duration,
+    current_page,
+    total_pages
+)
+VALUES (?, ?, ?, ?, ?, ?, ?)
+RETURNING *;
+
+-- name: GetMissingDocuments :many
+SELECT documents.* FROM documents
+WHERE
+    documents.filepath IS NOT NULL
+    AND documents.deleted = false
+    AND documents.id NOT IN (sqlc.slice('document_ids'));
+
+-- name: GetWantedDocuments :many
+SELECT CAST(value AS TEXT) AS id
+FROM json_each(?1)
+LEFT JOIN documents
+ON value = documents.id
+WHERE (
+    documents.id IS NOT NULL
+    AND documents.synced = false
+)
+OR (documents.id IS NULL)
+OR CAST($document_ids AS TEXT) != CAST($document_ids AS TEXT);
+
+-- name: GetDeletedDocuments :many
+SELECT documents.id
+FROM documents
+WHERE
+    documents.deleted = true
+    AND documents.id IN (sqlc.slice('document_ids'));
+
+-- name: GetDocuments :many
+SELECT * FROM documents
+ORDER BY created_at DESC
+LIMIT $limit
+OFFSET $offset;
+
+-- name: GetDocumentsWithStats :many
+WITH true_progress AS (
+    SELECT
+        start_time AS last_read,
+        SUM(duration) / 60 AS total_time_minutes,
+        document_id,
+        current_page,
+        total_pages,
+        ROUND(CAST(current_page AS REAL) / CAST(total_pages AS REAL) * 100, 2) AS percentage
+    FROM activity
+    WHERE user_id = $user_id
+    GROUP BY document_id
+    HAVING MAX(start_time)
+)
+SELECT
+    documents.*,
+
+    CAST(IFNULL(current_page, 0) AS INTEGER) AS current_page,
+    CAST(IFNULL(total_pages, 0) AS INTEGER) AS total_pages,
+    CAST(IFNULL(total_time_minutes, 0) AS INTEGER) AS total_time_minutes,
+
+    CAST(
+        STRFTIME('%Y-%m-%dT%H:%M:%SZ', IFNULL(last_read, "1970-01-01")
+    ) AS TEXT) AS last_read,
+
+    CAST(CASE
+        WHEN percentage > 97.0 THEN 100.0
+        WHEN percentage IS NULL THEN 0.0
+        ELSE percentage
+    END AS REAL) AS percentage
+
+FROM documents
+LEFT JOIN true_progress ON document_id = id
+ORDER BY last_read DESC, created_at DESC
+LIMIT $limit
+OFFSET $offset;
+
+-- name: GetUsers :many
+SELECT * FROM users
+WHERE
+    users.id = $user
+    OR ?1 IN (
+        SELECT id
+        FROM users
+        WHERE id = $user
+        AND admin = 1
+    )
+ORDER BY created_at DESC
+LIMIT $limit
+OFFSET $offset;
+
+-- name: GetActivity :many
+SELECT * FROM activity
+WHERE
+    user_id = $user_id
+    AND (
+        ($doc_filter = TRUE AND document_id = $document_id)
+        OR $doc_filter = FALSE
+    )
+ORDER BY start_time DESC
+LIMIT $limit
+OFFSET $offset;
+
+-- name: GetDevices :many
+SELECT * FROM devices
+WHERE user_id = $user_id
+ORDER BY created_at DESC
+LIMIT $limit
+OFFSET $offset;
+
+-- name: GetDocumentReadStats :one
+SELECT
+    count(DISTINCT page) AS pages_read,
+    sum(duration) AS total_time
+FROM rescaled_activity
+WHERE document_id = $document_id
+AND user_id = $user_id
+AND start_time >= $start_time;
+
+-- name: GetDocumentReadStatsCapped :one
+WITH capped_stats AS (
+    SELECT min(sum(duration), CAST($page_duration_cap AS INTEGER)) AS durations
+    FROM rescaled_activity
+    WHERE document_id = $document_id
+    AND user_id = $user_id
+    AND start_time >= $start_time
+    GROUP BY page
+)
+SELECT
+    CAST(count(*) AS INTEGER) AS pages_read,
+    CAST(sum(durations) AS INTEGER) AS total_time
+FROM capped_stats;
+
+-- name: GetDocumentDaysRead :one
+WITH document_days AS (
+    SELECT date(start_time, 'localtime') AS dates
+    FROM rescaled_activity
+    WHERE document_id = $document_id
+    AND user_id = $user_id
+    GROUP BY dates
+)
+SELECT CAST(count(*) AS INTEGER) AS days_read
+FROM document_days;
+
+-- name: GetUserDayStreaks :one
+WITH document_days AS (
+    SELECT date(start_time, 'localtime') AS read_day
+    FROM activity
+    WHERE user_id = $user_id
+    GROUP BY read_day
+    ORDER BY read_day DESC
+),
+partitions AS (
+    SELECT
+        document_days.*,
+        row_number() OVER (
+            PARTITION BY 1 ORDER BY read_day DESC
+        ) AS seqnum
+    FROM document_days
+),
+streaks AS (
+    SELECT
+        count(*) AS streak,
+        MIN(read_day) AS start_date,
+        MAX(read_day) AS end_date
+    FROM partitions
+    GROUP BY date(read_day, '+' || seqnum || ' day')
+    ORDER BY end_date DESC
+),
+max_streak AS (
+    SELECT
+        MAX(streak) AS max_streak,
+        start_date AS max_streak_start_date,
+        end_date AS max_streak_end_date
+    FROM streaks
+)
+SELECT
+    CAST(max_streak AS INTEGER),
+    CAST(max_streak_start_date AS TEXT),
+    CAST(max_streak_end_date AS TEXT),
+    streak AS current_streak,
+    CAST(start_date AS TEXT) AS current_streak_start_date,
+    CAST(end_date AS TEXT) AS current_streak_end_date
+FROM max_streak, streaks LIMIT 1;
+
+-- name: GetUserWeekStreaks :one
+WITH document_weeks AS (
+    SELECT STRFTIME('%Y-%m-%d', start_time, 'localtime', 'weekday 0', '-7 day') AS read_week
+    FROM activity
+    WHERE user_id = $user_id
+    GROUP BY read_week
+    ORDER BY read_week DESC
+),
+partitions AS (
+    SELECT
+        document_weeks.*,
+        row_number() OVER (
+            PARTITION BY 1 ORDER BY read_week DESC
+        ) AS seqnum
+    FROM document_weeks
+),
+streaks AS (
+    SELECT
+        count(*) AS streak,
+        MIN(read_week) AS start_date,
+        MAX(read_week) AS end_date
+    FROM partitions
+    GROUP BY date(read_week, '+' || (seqnum * 7) || ' day')
+    ORDER BY end_date DESC
+),
+max_streak AS (
+    SELECT
+        MAX(streak) AS max_streak,
+        start_date AS max_streak_start_date,
+        end_date AS max_streak_end_date
+    FROM streaks
+)
+SELECT
+    CAST(max_streak AS INTEGER),
+    CAST(max_streak_start_date AS TEXT),
+    CAST(max_streak_end_date AS TEXT),
+    streak AS current_streak,
+    CAST(start_date AS TEXT) AS current_streak_start_date,
+    CAST(end_date AS TEXT) AS current_streak_end_date
+FROM max_streak, streaks LIMIT 1;
+
+-- name: GetUserWindowStreaks :one
+WITH document_windows AS (
+    SELECT CASE
+      WHEN ?2 = "WEEK" THEN STRFTIME('%Y-%m-%d', start_time, 'localtime', 'weekday 0', '-7 day')
+      WHEN ?2 = "DAY" THEN date(start_time, 'localtime')
+    END AS read_window
+    FROM activity
+    WHERE user_id = $user_id
+    AND CAST($window AS TEXT) = CAST($window AS TEXT)
+    GROUP BY read_window
+    ORDER BY read_window DESC
+),
+partitions AS (
+    SELECT
+        document_windows.*,
+        row_number() OVER (
+            PARTITION BY 1 ORDER BY read_window DESC
+        ) AS seqnum
+    FROM document_windows
+),
+streaks AS (
+    SELECT
+        count(*) AS streak,
+        MIN(read_window) AS start_date,
+        MAX(read_window) AS end_date
+    FROM partitions
+    GROUP BY CASE
+	WHEN ?2 = "DAY" THEN date(read_window, '+' || seqnum || ' day')
+	WHEN ?2 = "WEEK" THEN date(read_window, '+' || (seqnum * 7) || ' day')
+    END
+    ORDER BY end_date DESC
+),
+max_streak AS (
+    SELECT
+        MAX(streak) AS max_streak,
+        start_date AS max_streak_start_date,
+        end_date AS max_streak_end_date
+    FROM streaks
+)
+SELECT
+    CAST(max_streak AS INTEGER),
+    CAST(max_streak_start_date AS TEXT),
+    CAST(max_streak_end_date AS TEXT),
+    streak AS current_streak,
+    CAST(start_date AS TEXT) AS current_streak_start_date,
+    CAST(end_date AS TEXT) AS current_streak_end_date
+FROM max_streak, streaks LIMIT 1;
+
+-- name: GetDatabaseInfo :one
+SELECT
+    (SELECT count(rowid) FROM activity WHERE activity.user_id = $user_id) AS activity_size,
+    (SELECT count(rowid) FROM documents) AS documents_size,
+    (SELECT count(rowid) FROM document_progress WHERE document_progress.user_id = $user_id) AS progress_size,
+    (SELECT count(rowid) FROM devices WHERE devices.user_id = $user_id) AS devices_size
+LIMIT 1;
+
+-- name: GetDailyReadStats :many
+WITH RECURSIVE last_30_days (date) AS (
+    SELECT date('now') AS date
+    UNION ALL
+    SELECT date(date, '-1 days')
+    FROM last_30_days
+    LIMIT 30
+),
+activity_records AS (
+    SELECT
+        sum(duration) AS seconds_read,
+        date(start_time, 'localtime') AS day
+    FROM activity
+    WHERE user_id = $user_id
+    GROUP BY day
+    ORDER BY day DESC
+    LIMIT 30
+)
+SELECT
+    CAST(date AS TEXT),
+    CAST(CASE
+      WHEN seconds_read IS NULL THEN 0
+      ELSE seconds_read / 60
+    END AS INTEGER) AS minutes_read
+FROM last_30_days
+LEFT JOIN activity_records ON activity_records.day == last_30_days.date
+ORDER BY date DESC
+LIMIT 30;
+
+-- SELECT
+--     sum(duration) / 60 AS minutes_read,
+--     date(start_time, 'localtime') AS day
+-- FROM activity
+-- GROUP BY day
+-- ORDER BY day DESC
+-- LIMIT 10;

database/schema.sql

@@ -0,0 +1,156 @@
+PRAGMA foreign_keys = ON;
+
+-- Authentication
+CREATE TABLE IF NOT EXISTS users (
+    id TEXT NOT NULL PRIMARY KEY,
+
+    pass TEXT NOT NULL,
+    admin BOOLEAN NOT NULL DEFAULT 0 CHECK (admin IN (0, 1)),
+
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Books / Documents
+CREATE TABLE IF NOT EXISTS documents (
+    id TEXT NOT NULL PRIMARY KEY,
+
+    md5 TEXT,
+    filepath TEXT,
+    title TEXT,
+    author TEXT,
+    series TEXT,
+    series_index INTEGER,
+    lang TEXT,
+    description TEXT,
+    olid TEXT,
+    synced BOOLEAN NOT NULL DEFAULT 0 CHECK (synced IN (0, 1)),
+    deleted BOOLEAN NOT NULL DEFAULT 0 CHECK (deleted IN (0, 1)),
+
+    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Devices
+CREATE TABLE IF NOT EXISTS devices (
+    id TEXT NOT NULL PRIMARY KEY,
+    user_id TEXT NOT NULL,
+
+    device_name TEXT NOT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    sync BOOLEAN NOT NULL DEFAULT 1 CHECK (sync IN (0, 1)),
+
+    FOREIGN KEY (user_id) REFERENCES users (id)
+);
+
+-- Document Device Sync
+CREATE TABLE IF NOT EXISTS document_device_sync (
+    user_id TEXT NOT NULL,
+    document_id TEXT NOT NULL,
+    device_id TEXT NOT NULL,
+
+    last_synced DATETIME NOT NULL,
+    sync BOOLEAN NOT NULL DEFAULT 1 CHECK (sync IN (0, 1)),
+
+    FOREIGN KEY (user_id) REFERENCES users (id),
+    FOREIGN KEY (document_id) REFERENCES documents (id),
+    FOREIGN KEY (device_id) REFERENCES devices (id),
+    PRIMARY KEY (user_id, document_id, device_id)
+);
+
+-- User Document Progress
+CREATE TABLE IF NOT EXISTS document_progress (
+    user_id TEXT NOT NULL,
+    document_id TEXT NOT NULL,
+    device_id TEXT NOT NULL,
+
+    percentage REAL NOT NULL,
+    progress TEXT NOT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    FOREIGN KEY (user_id) REFERENCES users (id),
+    FOREIGN KEY (document_id) REFERENCES documents (id),
+    FOREIGN KEY (device_id) REFERENCES devices (id),
+    PRIMARY KEY (user_id, document_id, device_id)
+);
+
+-- Read Activity
+CREATE TABLE IF NOT EXISTS activity (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    user_id TEXT NOT NULL,
+    document_id TEXT NOT NULL,
+    device_id TEXT NOT NULL,
+
+    start_time DATETIME NOT NULL,
+    duration INTEGER NOT NULL,
+    current_page INTEGER NOT NULL,
+    total_pages INTEGER NOT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    FOREIGN KEY (user_id) REFERENCES users (id),
+    FOREIGN KEY (document_id) REFERENCES documents (id),
+    FOREIGN KEY (device_id) REFERENCES devices (id)
+);
+
+-- Update Trigger
+CREATE TRIGGER IF NOT EXISTS update_documents_updated_at
+BEFORE UPDATE ON documents BEGIN
+UPDATE documents
+SET updated_at = CURRENT_TIMESTAMP
+WHERE id = old.id;
+END;
+
+-- Rescaled Activity View (Adapted from KOReader)
+CREATE VIEW IF NOT EXISTS rescaled_activity AS
+
+WITH RECURSIVE numbers (idx) AS (
+    SELECT 1 AS idx
+    UNION ALL
+    SELECT idx + 1
+    FROM numbers
+    LIMIT 1000
+),
+
+total_pages AS (
+    SELECT
+        document_id,
+        total_pages AS pages
+    FROM activity
+    GROUP BY document_id
+    HAVING MAX(start_time)
+    ORDER BY start_time DESC
+),
+
+intermediate AS (
+    SELECT
+        activity.document_id,
+        activity.device_id,
+        activity.user_id,
+        activity.current_page,
+        activity.total_pages,
+        total_pages.pages,
+        activity.start_time,
+        activity.duration,
+        numbers.idx,
+        -- Derive First Page
+        ((activity.current_page - 1) * total_pages.pages) / activity.total_pages
+        + 1 AS first_page,
+        -- Derive Last Page
+        MAX(
+            ((activity.current_page - 1) * total_pages.pages)
+            / activity.total_pages
+            + 1,
+            (activity.current_page * total_pages.pages) / activity.total_pages
+        ) AS last_page
+    FROM activity
+    INNER JOIN total_pages ON total_pages.document_id = activity.document_id
+    INNER JOIN numbers ON numbers.idx <= (last_page - first_page + 1)
+)
+
+SELECT
+    document_id,
+    device_id,
+    user_id,
+    start_time,
+    first_page + idx - 1 AS page,
+    duration / (last_page - first_page + 1) AS duration
+FROM intermediate;

docker-compose.yml

@@ -0,0 +1,12 @@
+---
+services:
+  sync-ninja:
+    # working_dir: /app
+    environment:
+      - CONFIG_PATH=/data
+      - DATA_PATH=/data
+    ports:
+      - "8585:8585"
+    build: .
+    volumes:
+      - ./data:/data

go.mod

@@ -0,0 +1,48 @@
+module reichard.io/bbank
+
+go 1.19
+
+require (
+	github.com/alexedwards/argon2id v0.0.0-20230305115115-4b3c3280a736
+	github.com/gabriel-vasile/mimetype v1.4.2
+	github.com/gin-contrib/multitemplate v0.0.0-20230212012517-45920c92c271
+	github.com/gin-contrib/sessions v0.0.4
+	github.com/gin-gonic/gin v1.9.1
+	github.com/mattn/go-sqlite3 v1.14.17
+	github.com/sirupsen/logrus v1.9.3
+	github.com/urfave/cli/v2 v2.25.7
+	golang.org/x/exp v0.0.0-20230905200255-921286631fa9
+)
+
+require (
+	github.com/bytedance/sonic v1.10.0 // indirect
+	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
+	github.com/chenzhuoyu/iasm v0.9.0 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.15.3 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/gorilla/context v1.1.1 // indirect
+	github.com/gorilla/securecookie v1.1.1 // indirect
+	github.com/gorilla/sessions v1.2.1 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.5 // indirect
+	github.com/leodido/go-urn v1.2.4 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.1.0 // indirect
+	github.com/russross/blackfriday/v2 v2.1.0 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.11 // indirect
+	github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
+	golang.org/x/arch v0.4.0 // indirect
+	golang.org/x/crypto v0.12.0 // indirect
+	golang.org/x/net v0.14.0 // indirect
+	golang.org/x/sys v0.12.0 // indirect
+	golang.org/x/text v0.12.0 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -0,0 +1,217 @@
+github.com/alexedwards/argon2id v0.0.0-20230305115115-4b3c3280a736 h1:qZaEtLxnqY5mJ0fVKbk31NVhlgi0yrKm51Pq/I5wcz4=
+github.com/alexedwards/argon2id v0.0.0-20230305115115-4b3c3280a736/go.mod h1:mTeFRcTdnpzOlRjMoFYC/80HwVUreupyAiqPkCZQOXc=
+github.com/antonlindstrom/pgstore v0.0.0-20200229204646-b08ebf1105e0/go.mod h1:2Ti6VUHVxpC0VSmTZzEvpzysnaGAfGBOoMIz5ykPyyw=
+github.com/boj/redistore v0.0.0-20180917114910-cd5dcc76aeff/go.mod h1:+RTT1BOk5P97fT2CiHkbFQwkK3mjsFAP6zCYV2aXtjw=
+github.com/bradfitz/gomemcache v0.0.0-20190913173617-a41fca850d0b/go.mod h1:H0wQNHz2YrLsuXOZozoeDmnHXkNCRmMW0gwFWDfEZDA=
+github.com/bradleypeabody/gorilla-sessions-memcache v0.0.0-20181103040241-659414f458e1/go.mod h1:dkChI7Tbtx7H1Tj7TqGSZMOeGpMP5gLHtjroHd4agiI=
+github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
+github.com/bytedance/sonic v1.10.0-rc/go.mod h1:ElCzW+ufi8qKqNW0FY314xriJhyJhuoJ3gFZdAHF7NM=
+github.com/bytedance/sonic v1.10.0 h1:qtNZduETEIWJVIyDl01BeNxur2rW9OwTQ/yBqFRkKEk=
+github.com/bytedance/sonic v1.10.0/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
+github.com/chenzhuoyu/base64x v0.0.0-20211019084208-fb5309c8db06/go.mod h1:DH46F32mSOjUmXrMHnKwZdA8wcEefY7UVqBKYGjpdQY=
+github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311/go.mod h1:b583jCggY9gE99b6G5LEC39OIiVsWj+R97kbl5odCEk=
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graph/graph.go

@@ -0,0 +1,173 @@
+package graph
+
+import (
+	"fmt"
+	"math"
+
+	"reichard.io/bbank/database"
+)
+
+type SVGGraphPoint struct {
+	X    int
+	Y    int
+	Size int
+}
+
+type SVGGraphData struct {
+	Height     int
+	Width      int
+	Offset     int
+	LinePoints []SVGGraphPoint
+	BarPoints  []SVGGraphPoint
+	BezierPath string
+	BezierFill string
+}
+
+type SVGBezierOpposedLine struct {
+	Length int
+	Angle  int
+}
+
+func GetSVGGraphData(inputData []database.GetDailyReadStatsRow, svgWidth int) SVGGraphData {
+	// Static Padding
+	var padding int = 5
+
+	// Derive Height
+	var maxHeight int = 0
+	for _, item := range inputData {
+		if int(item.MinutesRead) > maxHeight {
+			maxHeight = int(item.MinutesRead)
+		}
+	}
+
+	// Derive Block Offsets & Transformed Coordinates (Line & Bar)
+	var blockOffset int = int(math.Floor(float64(svgWidth) / float64(len(inputData))))
+
+	// Line & Bar Points
+	linePoints := []SVGGraphPoint{}
+	barPoints := []SVGGraphPoint{}
+
+	// Bezier Fill Coordinates (Max X, Min X, Max Y)
+	var maxBX int = 0
+	var maxBY int = 0
+	var minBX int = 0
+	for idx, item := range inputData {
+		itemSize := int(item.MinutesRead)
+		itemY := (maxHeight + padding) - itemSize
+		barPoints = append(barPoints, SVGGraphPoint{
+			X:    (idx * blockOffset) + (blockOffset / 2),
+			Y:    itemY,
+			Size: itemSize + padding,
+		})
+
+		lineX := (idx + 1) * blockOffset
+		linePoints = append(linePoints, SVGGraphPoint{
+			X:    lineX,
+			Y:    itemY,
+			Size: itemSize + padding,
+		})
+
+		if lineX > maxBX {
+			maxBX = lineX
+		}
+
+		if lineX < minBX {
+			minBX = lineX
+		}
+
+		if itemY > maxBY {
+			maxBY = itemY
+		}
+	}
+
+	// Return Data
+	return SVGGraphData{
+		Width:      svgWidth + padding*2,
+		Height:     maxHeight + padding*2,
+		Offset:     blockOffset,
+		LinePoints: linePoints,
+		BarPoints:  barPoints,
+		BezierPath: getSVGBezierPath(linePoints),
+		BezierFill: fmt.Sprintf("L %d,%d L %d,%d Z", maxBX, maxBY+padding, minBX, maxBY+padding),
+	}
+}
+
+func getSVGBezierOpposedLine(pointA SVGGraphPoint, pointB SVGGraphPoint) SVGBezierOpposedLine {
+	lengthX := float64(pointB.X - pointA.X)
+	lengthY := float64(pointB.Y - pointA.Y)
+
+	return SVGBezierOpposedLine{
+		Length: int(math.Sqrt(math.Pow(lengthX, 2) + math.Pow(lengthY, 2))),
+		Angle:  int(math.Atan2(lengthY, lengthX)),
+	}
+
+	// length = Math.sqrt(Math.pow(lengthX, 2) + Math.pow(lengthY, 2)),
+	// angle = Math.atan2(lengthY, lengthX)
+}
+
+func getSVGBezierControlPoint(currentPoint *SVGGraphPoint, prevPoint *SVGGraphPoint, nextPoint *SVGGraphPoint, isReverse bool) SVGGraphPoint {
+	// First / Last Point
+	if prevPoint == nil {
+		prevPoint = currentPoint
+	}
+	if nextPoint == nil {
+		nextPoint = currentPoint
+	}
+
+	// Modifiers
+	var smoothingRatio float64 = 0.2
+	var directionModifier float64 = 0
+	if isReverse == true {
+		directionModifier = math.Pi
+	}
+
+	opposingLine := getSVGBezierOpposedLine(*prevPoint, *nextPoint)
+	var lineAngle float64 = float64(opposingLine.Angle) + directionModifier
+	var lineLength float64 = float64(opposingLine.Length) * smoothingRatio
+
+	// Calculate Control Point
+	return SVGGraphPoint{
+		X: currentPoint.X + int(math.Cos(float64(lineAngle))*lineLength),
+		Y: currentPoint.Y + int(math.Sin(float64(lineAngle))*lineLength),
+	}
+}
+
+func getSVGBezierCurve(point SVGGraphPoint, index int, allPoints []SVGGraphPoint) []SVGGraphPoint {
+	var pointMinusTwo *SVGGraphPoint
+	var pointMinusOne *SVGGraphPoint
+	var pointPlusOne *SVGGraphPoint
+
+	if index-2 >= 0 && index-2 < len(allPoints) {
+		pointMinusTwo = &allPoints[index-2]
+	}
+	if index-1 >= 0 && index-1 < len(allPoints) {
+		pointMinusOne = &allPoints[index-1]
+	}
+	if index+1 >= 0 && index+1 < len(allPoints) {
+		pointPlusOne = &allPoints[index+1]
+	}
+
+	startControlPoint := getSVGBezierControlPoint(pointMinusOne, pointMinusTwo, &point, false)
+	endControlPoint := getSVGBezierControlPoint(&point, pointMinusOne, pointPlusOne, true)
+
+	return []SVGGraphPoint{
+		startControlPoint,
+		endControlPoint,
+		point,
+	}
+}
+
+func getSVGBezierPath(allPoints []SVGGraphPoint) string {
+	var bezierSVGPath string = ""
+
+	for index, point := range allPoints {
+		if index == 0 {
+			bezierSVGPath += fmt.Sprintf("M %d,%d", point.X, point.Y)
+		} else {
+			newPoints := getSVGBezierCurve(point, index, allPoints)
+			bezierSVGPath += fmt.Sprintf(" C%d,%d %d,%d %d,%d", newPoints[0].X, newPoints[0].Y, newPoints[1].X, newPoints[1].Y, newPoints[2].X, newPoints[2].Y)
+		}
+	}
+
+	return bezierSVGPath
+}

metadata/metadata.go

@@ -0,0 +1,104 @@
+package metadata
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+
+	log "github.com/sirupsen/logrus"
+)
+
+type coverResult struct {
+	CoverEditionKey string `json:"cover_edition_key"`
+}
+
+type queryResponse struct {
+	ResultCount      int           `json:"numFound"`
+	Start            int           `json:"start"`
+	ResultCountExact bool          `json:"numFoundExact"`
+	Results          []coverResult `json:"docs"`
+}
+
+var BASE_QUERY_URL string = "https://openlibrary.org/search.json?q=%s&fields=cover_edition_key"
+var BASE_COVER_URL string = "https://covers.openlibrary.org/b/olid/%s-L.jpg"
+
+func GetCoverIDs(title *string, author *string) ([]string, error) {
+	if title == nil || author == nil {
+		log.Error("[metadata] Invalid Search Query")
+		return nil, errors.New("Invalid Query")
+	}
+
+	searchQuery := url.QueryEscape(fmt.Sprintf("%s %s", *title, *author))
+	apiQuery := fmt.Sprintf(BASE_QUERY_URL, searchQuery)
+
+	log.Info("[metadata] Acquiring CoverID")
+	resp, err := http.Get(apiQuery)
+	if err != nil {
+		log.Error("[metadata] Cover URL API Failure")
+		return nil, errors.New("API Failure")
+	}
+
+	target := queryResponse{}
+	err = json.NewDecoder(resp.Body).Decode(&target)
+	if err != nil {
+		log.Error("[metadata] Cover URL API Decode Failure")
+		return nil, errors.New("API Failure")
+	}
+
+	var coverIDs []string
+	for _, result := range target.Results {
+		if result.CoverEditionKey != "" {
+			coverIDs = append(coverIDs, result.CoverEditionKey)
+		}
+	}
+
+	return coverIDs, nil
+}
+
+func DownloadAndSaveCover(coverID string, dirPath string) (*string, error) {
+	// Derive & Sanitize File Name
+	fileName := "." + filepath.Clean(fmt.Sprintf("/%s.jpg", coverID))
+
+	// Generate Storage Path
+	safePath := filepath.Join(dirPath, "covers", fileName)
+
+	// Validate File Doesn't Exists
+	_, err := os.Stat(safePath)
+	if err == nil {
+		log.Warn("[metadata] File Alreads Exists")
+		return &safePath, nil
+	}
+
+	// Create File
+	out, err := os.Create(safePath)
+	if err != nil {
+		log.Error("[metadata] File Create Error")
+		return nil, errors.New("File Failure")
+	}
+	defer out.Close()
+
+	// Download File
+	log.Info("[metadata] Downloading Cover")
+	coverURL := fmt.Sprintf(BASE_COVER_URL, coverID)
+	resp, err := http.Get(coverURL)
+	if err != nil {
+		log.Error("[metadata] Cover URL API Failure")
+		return nil, errors.New("API Failure")
+	}
+	defer resp.Body.Close()
+
+	// Copy File to Disk
+	_, err = io.Copy(out, resp.Body)
+	if err != nil {
+		log.Error("[metadata] File Copy Error")
+		return nil, errors.New("File Failure")
+	}
+
+	// Return FilePath
+	return &safePath, nil
+}

server/server.go

@@ -0,0 +1,62 @@
+package server
+
+import (
+	"context"
+	"net/http"
+	"os"
+	"path/filepath"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+
+	"reichard.io/bbank/api"
+	"reichard.io/bbank/config"
+	"reichard.io/bbank/database"
+)
+
+type Server struct {
+	API        *api.API
+	Config     *config.Config
+	Database   *database.DBManager
+	httpServer *http.Server
+}
+
+func NewServer() *Server {
+	c := config.Load()
+	db := database.NewMgr(c)
+	api := api.NewApi(db, c)
+
+	// Create Paths
+	docDir := filepath.Join(c.DataPath, "documents")
+	coversDir := filepath.Join(c.DataPath, "covers")
+	_ = os.Mkdir(docDir, os.ModePerm)
+	_ = os.Mkdir(coversDir, os.ModePerm)
+
+	return &Server{
+		API:      api,
+		Config:   c,
+		Database: db,
+	}
+}
+
+func (s *Server) StartServer() {
+	listenAddr := (":" + s.Config.ListenPort)
+
+	s.httpServer = &http.Server{
+		Handler: s.API.Router,
+		Addr:    listenAddr,
+	}
+
+	go func() {
+		err := s.httpServer.ListenAndServe()
+		if err != nil {
+			log.Error("Error starting server ", err)
+		}
+	}()
+}
+
+func (s *Server) StopServer() {
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	s.httpServer.Shutdown(ctx)
+}

shell.nix

@@ -0,0 +1,8 @@
+{ pkgs ? import <nixpkgs> { } }:
+
+pkgs.mkShell {
+  packages = with pkgs; [
+    go
+    nodejs_20
+  ];
+}

sqlc.yaml

@@ -0,0 +1,60 @@
+version: 2
+sql:
+  - engine: "sqlite"
+    schema: "./database/schema.sql"
+    queries: "./database/query.sql"
+    gen:
+      go:
+        package: "database"
+        out: "database"
+        emit_json_tags: true
+        overrides:
+          # Type pointers needed for JSON
+          - column: "documents.md5"
+            go_type:
+              type: "string"
+              pointer: true
+          - column: "documents.filepath"
+            go_type:
+              type: "string"
+              pointer: true
+          - column: "documents.title"
+            go_type:
+              type: "string"
+              pointer: true
+          - column: "documents.author"
+            go_type:
+              type: "string"
+              pointer: true
+          - column: "documents.series"
+            go_type:
+              type: "string"
+              pointer: true
+          - column: "documents.series_index"
+            go_type:
+              type: "int64"
+              pointer: true
+          - column: "documents.lang"
+            go_type:
+              type: "string"
+              pointer: true
+          - column: "documents.description"
+            go_type:
+              type: "string"
+              pointer: true
+          - column: "documents.olid"
+            go_type:
+              type: "string"
+              pointer: true
+
+          # Do not generate JSON
+          - column: "documents.synced"
+            go_struct_tag: 'json:"-"'
+          - column: "documents.olid"
+            go_struct_tag: 'json:"-"'
+          - column: "documents.deleted"
+            go_struct_tag: 'json:"-"'
+          - column: "users.pass"
+            go_struct_tag: 'json:"-"'
+          - column: "users.admin"
+            go_struct_tag: 'json:"-"'

templates/activity.html

@@ -0,0 +1,4 @@
+{{template "base.html" .}} {{define "title"}}Activity{{end}} {{define
+"content"}}
+<h1>Activity</h1>
+{{end}}

templates/base.html

@@ -0,0 +1,202 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width" />
+    <script src="https://cdn.tailwindcss.com"></script>
+    <title>{{block "title" .}}{{end}}</title>
+  </head>
+  <body>
+    <main
+      class="relative h-screen overflow-hidden bg-gray-100 dark:bg-gray-800"
+    >
+      <div class="flex items-start justify-between">
+        <div class="relative hidden h-screen shadow-lg lg:block w-64">
+          <div class="h-full bg-white dark:bg-gray-700">
+            <div class="flex items-center justify-start pt-4 ml-8">
+              <p class="text-xl font-bold dark:text-white">Book Manager</p>
+            </div>
+            <nav class="mt-6">
+              <div>
+                <a
+                  class="flex items-center justify-start w-full p-2 pl-6 my-2 transition-colors duration-200 border-l-4 {{if eq .RouteName "home"}}border-purple-500 dark:text-white{{else}}border-transparent text-gray-400 hover:text-gray-800{{end}}"
+                  href="/"
+                >
+                  <span class="text-left">
+                    <svg
+                      width="20"
+                      height="20"
+                      fill="currentColor"
+                      viewBox="0 0 24 24"
+                      xmlns="http://www.w3.org/2000/svg"
+                    >
+		      <path fill-rule="evenodd" clip-rule="evenodd" d="M2.5192 7.82274C2 8.77128 2 9.91549 2 12.2039V13.725C2 17.6258 2 19.5763 3.17157 20.7881C4.34315 22 6.22876 22 10 22H14C17.7712 22 19.6569 22 20.8284 20.7881C22 19.5763 22 17.6258 22 13.725V12.2039C22 9.91549 22 8.77128 21.4808 7.82274C20.9616 6.87421 20.0131 6.28551 18.116 5.10812L16.116 3.86687C14.1106 2.62229 13.1079 2 12 2C10.8921 2 9.88939 2.62229 7.88403 3.86687L5.88403 5.10813C3.98695 6.28551 3.0384 6.87421 2.5192 7.82274ZM11.25 18C11.25 18.4142 11.5858 18.75 12 18.75C12.4142 18.75 12.75 18.4142 12.75 18V15C12.75 14.5858 12.4142 14.25 12 14.25C11.5858 14.25 11.25 14.5858 11.25 15V18Z" />
+                    </svg>
+                  </span>
+                  <span class="mx-4 text-sm font-normal"> Home </span>
+                </a>
+                <a
+                  class="flex items-center justify-start w-full p-2 pl-6 my-2 transition-colors duration-200 border-l-4 {{if eq .RouteName "documents"}}border-purple-500 dark:text-white{{else}}border-transparent text-gray-400 hover:text-gray-800{{end}}"
+                  href="/documents"
+                >
+                  <span class="text-left">
+                    <svg
+                      width="20"
+                      height="20"
+                      fill="currentColor"
+                      viewBox="0 0 24 24"
+                      xmlns="http://www.w3.org/2000/svg"
+                    >
+		      <path fill-rule="evenodd" clip-rule="evenodd" d="M6.27103 2.11151C5.46135 2.21816 5.03258 2.41324 4.72718 2.71244C4.42179 3.01165 4.22268 3.43172 4.11382 4.225C4.00176 5.04159 4 6.12387 4 7.67568V16.2442C4.38867 15.9781 4.82674 15.7756 5.29899 15.6517C5.82716 15.513 6.44305 15.5132 7.34563 15.5135L20 15.5135V7.67568C20 6.12387 19.9982 5.04159 19.8862 4.22499C19.7773 3.43172 19.5782 3.01165 19.2728 2.71244C18.9674 2.41324 18.5387 2.21816 17.729 2.11151C16.8955 2.00172 15.7908 2 14.2069 2H9.7931C8.2092 2 7.10452 2.00172 6.27103 2.11151ZM6.75862 6.59459C6.75862 6.1468 7.12914 5.78378 7.58621 5.78378H16.4138C16.8709 5.78378 17.2414 6.1468 17.2414 6.59459C17.2414 7.04239 16.8709 7.40541 16.4138 7.40541H7.58621C7.12914 7.40541 6.75862 7.04239 6.75862 6.59459ZM7.58621 9.56757C7.12914 9.56757 6.75862 9.93058 6.75862 10.3784C6.75862 10.8262 7.12914 11.1892 7.58621 11.1892H13.1034C13.5605 11.1892 13.931 10.8262 13.931 10.3784C13.931 9.93058 13.5605 9.56757 13.1034 9.56757H7.58621Z" />
+		      <path d="M7.47341 17.1351H8.68965H13.1034H19.9991C19.9956 18.2657 19.9776 19.1088 19.8862 19.775C19.7773 20.5683 19.5782 20.9884 19.2728 21.2876C18.9674 21.5868 18.5387 21.7818 17.729 21.8885C16.8955 21.9983 15.7908 22 14.2069 22H9.7931C8.2092 22 7.10452 21.9983 6.27103 21.8885C5.46135 21.7818 5.03258 21.5868 4.72718 21.2876C4.42179 20.9884 4.22268 20.5683 4.11382 19.775C4.07259 19.4746 4.0463 19.1382 4.02952 18.7558C4.30088 18.0044 4.93365 17.4264 5.72738 17.218C6.01657 17.1421 6.39395 17.1351 7.47341 17.1351Z" />
+                    </svg>
+                  </span>
+                  <span class="mx-4 text-sm font-normal"> Documents </span>
+                </a>
+                <a
+                  class="flex items-center justify-start w-full p-2 pl-6 my-2 transition-colors duration-200 border-l-4 {{if eq .RouteName "activity"}}border-purple-500 dark:text-white{{else}}border-transparent text-gray-400 hover:text-gray-800{{end}}"
+                  href="/activity"
+                >
+                  <span class="text-left">
+                    <svg
+                      width="20"
+                      height="20"
+                      viewBox="0 0 24 24"
+                      fill="currentColor"
+                      xmlns="http://www.w3.org/2000/svg"
+                    >
+		      <path d="M9.5 2C8.67157 2 8 2.67157 8 3.5V4.5C8 5.32843 8.67157 6 9.5 6H14.5C15.3284 6 16 5.32843 16 4.5V3.5C16 2.67157 15.3284 2 14.5 2H9.5Z"/>
+		      <path fill-rule="evenodd" clip-rule="evenodd" d="M6.5 4.03662C5.24209 4.10719 4.44798 4.30764 3.87868 4.87694C3 5.75562 3 7.16983 3 9.99826V15.9983C3 18.8267 3 20.2409 3.87868 21.1196C4.75736 21.9983 6.17157 21.9983 9 21.9983H15C17.8284 21.9983 19.2426 21.9983 20.1213 21.1196C21 20.2409 21 18.8267 21 15.9983V9.99826C21 7.16983 21 5.75562 20.1213 4.87694C19.552 4.30764 18.7579 4.10719 17.5 4.03662V4.5C17.5 6.15685 16.1569 7.5 14.5 7.5H9.5C7.84315 7.5 6.5 6.15685 6.5 4.5V4.03662ZM7 9.75C6.58579 9.75 6.25 10.0858 6.25 10.5C6.25 10.9142 6.58579 11.25 7 11.25H7.5C7.91421 11.25 8.25 10.9142 8.25 10.5C8.25 10.0858 7.91421 9.75 7.5 9.75H7ZM10.5 9.75C10.0858 9.75 9.75 10.0858 9.75 10.5C9.75 10.9142 10.0858 11.25 10.5 11.25H17C17.4142 11.25 17.75 10.9142 17.75 10.5C17.75 10.0858 17.4142 9.75 17 9.75H10.5ZM7 13.25C6.58579 13.25 6.25 13.5858 6.25 14C6.25 14.4142 6.58579 14.75 7 14.75H7.5C7.91421 14.75 8.25 14.4142 8.25 14C8.25 13.5858 7.91421 13.25 7.5 13.25H7ZM10.5 13.25C10.0858 13.25 9.75 13.5858 9.75 14C9.75 14.4142 10.0858 14.75 10.5 14.75H17C17.4142 14.75 17.75 14.4142 17.75 14C17.75 13.5858 17.4142 13.25 17 13.25H10.5ZM7 16.75C6.58579 16.75 6.25 17.0858 6.25 17.5C6.25 17.9142 6.58579 18.25 7 18.25H7.5C7.91421 18.25 8.25 17.9142 8.25 17.5C8.25 17.0858 7.91421 16.75 7.5 16.75H7ZM10.5 16.75C10.0858 16.75 9.75 17.0858 9.75 17.5C9.75 17.9142 10.0858 18.25 10.5 18.25H17C17.4142 18.25 17.75 17.9142 17.75 17.5C17.75 17.0858 17.4142 16.75 17 16.75H10.5Z"/>
+                    </svg>
+                  </span>
+                  <span class="mx-4 text-sm font-normal"> Activity </span>
+                </a>
+                <a
+                  class="flex items-center justify-start w-full p-2 pl-6 my-2 transition-colors duration-200 border-l-4 {{if eq .RouteName "graphs"}}border-purple-500 dark:text-white{{else}}border-transparent text-gray-400 hover:text-gray-800{{end}}"
+                  href="/graphs"
+                >
+                  <span class="text-left">
+                    <svg
+                      width="20"
+                      height="20"
+                      viewBox="0 0 24 24"
+                      fill="currentColor"
+                      xmlns="http://www.w3.org/2000/svg"
+                    >
+                      <path
+                        fill-rule="evenodd"
+                        clip-rule="evenodd"
+                        d="M3.46447 3.46447C2 4.92893 2 7.28595 2 12C2 16.714 2 19.0711 3.46447 20.5355C4.92893 22 7.28595 22 12 22C16.714 22 19.0711 22 20.5355 20.5355C22 19.0711 22 16.714 22 12C22 7.28595 22 4.92893 20.5355 3.46447C19.0711 2 16.714 2 12 2C7.28595 2 4.92893 2 3.46447 3.46447ZM17.5762 10.4801C17.8413 10.1619 17.7983 9.68901 17.4801 9.42383C17.1619 9.15866 16.689 9.20165 16.4238 9.51986L14.6269 11.6761C14.2562 12.1211 14.0284 12.3915 13.8409 12.5609C13.7539 12.6394 13.7023 12.6708 13.6775 12.6827C13.6725 12.6852 13.6689 12.6866 13.6667 12.6875C13.6667 12.6875 13.6624 12.6858 13.659 12.6842L13.6558 12.6827C13.6311 12.6708 13.5795 12.6394 13.4925 12.5609C13.3049 12.3915 13.0772 12.1211 12.7064 11.6761L12.414 11.3252C12.0855 10.931 11.7894 10.5756 11.5128 10.3258C11.2119 10.0541 10.8328 9.81205 10.3333 9.81205C9.83384 9.81205 9.45478 10.0541 9.15384 10.3258C8.87725 10.5756 8.58113 10.931 8.25267 11.3253L6.42383 13.5199C6.15866 13.8381 6.20165 14.311 6.51986 14.5762C6.83807 14.8413 7.31099 14.7983 7.57617 14.4801L9.37306 12.3239C9.74385 11.8789 9.97155 11.6085 10.1591 11.4391C10.2461 11.3606 10.2977 11.3292 10.3225 11.3173C10.3251 11.316 10.3274 11.315 10.3292 11.3142L10.3333 11.3125C10.3356 11.3134 10.3392 11.3148 10.3442 11.3173C10.3689 11.3292 10.4205 11.3606 10.5075 11.4391C10.6951 11.6085 10.9228 11.8789 11.2936 12.3239L11.586 12.6748C11.9145 13.069 12.2106 13.4244 12.4872 13.6742C12.7881 13.9459 13.1672 14.188 13.6667 14.188C14.1662 14.188 14.5452 13.9459 14.8462 13.6742C15.1228 13.4244 15.4189 13.069 15.7473 12.6748L17.5762 10.4801Z"
+                        fill="currentColor"
+                      />
+                    </svg>
+                  </span>
+                  <span class="mx-4 text-sm font-normal"> Graphs </span>
+                </a>
+              </div>
+            </nav>
+          </div>
+        </div>
+        <div class="flex flex-col w-full">
+          <header class="z-40 flex items-center justify-between w-full h-16">
+            <div class="block ml-6 lg:hidden">
+              <button
+                class="flex items-center p-2 text-gray-500 bg-white rounded-full shadow text-md"
+              >
+                <svg
+                  width="20"
+                  height="20"
+                  class="text-gray-400"
+                  fill="currentColor"
+                  viewBox="0 0 1792 1792"
+                  xmlns="http://www.w3.org/2000/svg"
+                >
+                  <path
+                    d="M1664 1344v128q0 26-19 45t-45 19h-1408q-26 0-45-19t-19-45v-128q0-26 19-45t45-19h1408q26 0 45 19t19 45zm0-512v128q0 26-19 45t-45 19h-1408q-26 0-45-19t-19-45v-128q0-26 19-45t45-19h1408q26 0 45 19t19 45zm0-512v128q0 26-19 45t-45 19h-1408q-26 0-45-19t-19-45v-128q0-26 19-45t45-19h1408q26 0 45 19t19 45z"
+                  ></path>
+                </svg>
+              </button>
+            </div>
+	    <h1 class="text-xl font-bold dark:text-white px-6">{{block "title" .}}{{end}}</h1>
+	    <div
+	      class="relative flex items-center justify-end w-full p-4 space-x-4"
+	    >
+	      <a href="#" class="relative block">
+		    <svg
+		      width="20"
+		      fill="currentColor"
+		      height="20"
+		      class="text-gray-800 dark:text-gray-200"
+		      viewBox="0 0 1792 1792"
+		      xmlns="http://www.w3.org/2000/svg"
+		    >
+		      <path
+			d="M1523 1339q-22-155-87.5-257.5t-184.5-118.5q-67 74-159.5 115.5t-195.5 41.5-195.5-41.5-159.5-115.5q-119 16-184.5 118.5t-87.5 257.5q106 150 271 237.5t356 87.5 356-87.5 271-237.5zm-243-699q0-159-112.5-271.5t-271.5-112.5-271.5 112.5-112.5 271.5 112.5 271.5 271.5 112.5 271.5-112.5 112.5-271.5zm512 256q0 182-71 347.5t-190.5 286-285.5 191.5-349 71q-182 0-348-71t-286-191-191-286-71-348 71-348 191-286 286-191 348-71 348 71 286 191 191 286 71 348z"
+		      />
+		    </svg>
+	      </a>
+	      <button
+		class="custom-profile-button flex items-center text-gray-500 dark:text-white text-md py-4"
+	      >
+	      {{ .User }}
+		<svg
+		  width="20"
+		  height="20"
+		  class="ml-2 text-gray-400"
+		  fill="currentColor"
+		  viewBox="0 0 1792 1792"
+		  xmlns="http://www.w3.org/2000/svg"
+		>
+		  <path
+		    d="M1408 704q0 26-19 45l-448 448q-19 19-45 19t-45-19l-448-448q-19-19-19-45t19-45 45-19h896q26 0 45 19t19 45z"
+		  ></path>
+		</svg>
+	      </button>
+                <div
+                  class="custom-profile-dropdown transition duration-200 absolute right-4 top-16 pt-4"
+                >
+		  <div
+		    class="w-56 origin-top-right bg-white rounded-md shadow-lg dark:shadow-gray-800 dark:bg-gray-700 ring-1 ring-black ring-opacity-5"
+		  >
+		    <div
+		      class="py-1"
+		      role="menu"
+		      aria-orientation="vertical"
+		      aria-labelledby="options-menu"
+		    >
+		      <a
+			href="/logout"
+			class="block block px-4 py-2 text-md text-gray-700 hover:bg-gray-100 hover:text-gray-900 dark:text-gray-100 dark:hover:text-white dark:hover:bg-gray-600"
+			role="menuitem"
+		      >
+			<span class="flex flex-col">
+			  <span>Logout</span>
+			</span>
+		      </a>
+		    </div>
+		  </div>
+		</div>
+	    </div>
+          </header>
+          <div class="h-screen px-4 pb-24 overflow-auto md:px-6">
+            {{block "content" .}}{{end}}
+          </div>
+        </div>
+      </div>
+    </main>
+
+    <!-- Custom Animation CSS -->
+    <style>
+      .custom-profile-dropdown {
+        visibility: hidden;
+        opacity: 0;
+      }
+
+      .custom-profile-button:hover + .custom-profile-dropdown,
+      .custom-profile-dropdown:hover {
+        visibility: visible;
+        opacity: 1;
+      }
+    </style>
+  </body>
+</html>

templates/base.old.html

@@ -0,0 +1,182 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width" />
+    <script src="https://cdn.tailwindcss.com"></script>
+    <title>{{block "title" .}}{{end}}</title>
+  </head>
+  <body>
+    <nav class="bg-white dark:bg-gray-800 shadow">
+      <div class="px-8 mx-auto max-w-7xl">
+        <div class="flex items-center justify-between h-16">
+          <div class="flex items-center">
+            <div class="hidden md:block">
+              <div class="flex items-baseline space-x-4">
+                <a
+                  class="text-gray-300 hover:text-gray-800 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium"
+                  href="/"
+                >
+                  Home
+                </a>
+                <a
+                  class="text-gray-800 dark:text-white hover:text-gray-800 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium"
+                  href="/documents"
+                >
+                  Documents
+                </a>
+                <a
+                  class="text-gray-300 hover:text-gray-800 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium"
+                  href="/activity"
+                >
+                  Activity
+                </a>
+                <a
+                  class="text-gray-300 hover:text-gray-800 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium"
+                  href="/graphs"
+                >
+                  Graphs
+                </a>
+              </div>
+            </div>
+          </div>
+          <div class="block">
+            <div class="flex items-center ml-4 md:ml-6">
+              <div class="relative ml-3">
+                <div
+                  class="custom-profile-icon relative inline-block text-left"
+                >
+                  <div>
+                    <button
+                      type="button"
+                      class="flex items-center justify-center w-full rounded-md px-4 py-2 text-sm font-medium text-gray-700 dark:text-gray-50 hover:bg-gray-50 dark:hover:bg-gray-500 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-gray-100 focus:ring-gray-500"
+                      id="options-menu"
+                    >
+                      <svg
+                        width="20"
+                        fill="currentColor"
+                        height="20"
+                        class="text-gray-800 dark:text-gray-200"
+                        viewBox="0 0 1792 1792"
+                        xmlns="http://www.w3.org/2000/svg"
+                      >
+                        <path
+                          d="M1523 1339q-22-155-87.5-257.5t-184.5-118.5q-67 74-159.5 115.5t-195.5 41.5-195.5-41.5-159.5-115.5q-119 16-184.5 118.5t-87.5 257.5q106 150 271 237.5t356 87.5 356-87.5 271-237.5zm-243-699q0-159-112.5-271.5t-271.5-112.5-271.5 112.5-112.5 271.5 112.5 271.5 271.5 112.5 271.5-112.5 112.5-271.5zm512 256q0 182-71 347.5t-190.5 286-285.5 191.5-349 71q-182 0-348-71t-286-191-191-286-71-348 71-348 191-286 286-191 348-71 348 71 286 191 191 286 71 348z"
+                        />
+                      </svg>
+                    </button>
+                  </div>
+                </div>
+                <div
+                  class="custom-profile-dropdown transition duration-200 absolute right-0 w-56 pt-2 origin-top-right bg-white rounded-md shadow-lg dark:bg-gray-800 ring-1 ring-black ring-opacity-5"
+                >
+                  <div
+                    class="py-1"
+                    role="menu"
+                    aria-orientation="vertical"
+                    aria-labelledby="options-menu"
+                  >
+                    <a
+                      href="#"
+                      class="block block px-4 py-2 text-md text-gray-700 hover:bg-gray-100 hover:text-gray-900 dark:text-gray-100 dark:hover:text-white dark:hover:bg-gray-600"
+                      role="menuitem"
+                    >
+                      <span class="flex flex-col">
+                        <span> Settings </span>
+                      </span>
+                    </a>
+                    <a
+                      href="#"
+                      class="block block px-4 py-2 text-md text-gray-700 hover:bg-gray-100 hover:text-gray-900 dark:text-gray-100 dark:hover:text-white dark:hover:bg-gray-600"
+                      role="menuitem"
+                    >
+                      <span class="flex flex-col">
+                        <span> Account </span>
+                      </span>
+                    </a>
+                    <a
+                      href="#"
+                      class="block block px-4 py-2 text-md text-gray-700 hover:bg-gray-100 hover:text-gray-900 dark:text-gray-100 dark:hover:text-white dark:hover:bg-gray-600"
+                      role="menuitem"
+                    >
+                      <span class="flex flex-col">
+                        <span> Logout </span>
+                      </span>
+                    </a>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+          <div class="flex -mr-2 md:hidden">
+            <button
+              class="text-gray-800 dark:text-white hover:text-gray-300 inline-flex items-center justify-center p-2 rounded-md focus:outline-none"
+            >
+              <svg
+                width="20"
+                height="20"
+                fill="currentColor"
+                class="w-8 h-8"
+                viewBox="0 0 1792 1792"
+                xmlns="http://www.w3.org/2000/svg"
+              >
+                <path
+                  d="M1664 1344v128q0 26-19 45t-45 19h-1408q-26 0-45-19t-19-45v-128q0-26 19-45t45-19h1408q26 0 45 19t19 45zm0-512v128q0 26-19 45t-45 19h-1408q-26 0-45-19t-19-45v-128q0-26 19-45t45-19h1408q26 0 45 19t19 45zm0-512v128q0 26-19 45t-45 19h-1408q-26 0-45-19t-19-45v-128q0-26 19-45t45-19h1408q26 0 45 19t19 45z"
+                />
+              </svg>
+            </button>
+          </div>
+        </div>
+      </div>
+      <div class="md:hidden">
+        <div class="px-2 pt-2 pb-3 space-y-1 sm:px-3">
+          <a
+            class="text-gray-300 hover:text-gray-800 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium"
+            href="/#"
+          >
+            Home
+          </a>
+          <a
+            class="text-gray-800 dark:text-white block px-3 py-2 rounded-md text-base font-medium"
+            href="/#"
+          >
+            Gallery
+          </a>
+          <a
+            class="text-gray-300 hover:text-gray-800 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium"
+            href="/#"
+          >
+            Content
+          </a>
+          <a
+            class="text-gray-300 hover:text-gray-800 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium"
+            href="/#"
+          >
+            Contact
+          </a>
+        </div>
+      </div>
+    </nav>
+
+    <!-- Custom Animation CSS -->
+    <style>
+      .custom-profile-dropdown {
+        visibility: hidden;
+        opacity: 0;
+      }
+
+      .custom-profile-icon:hover + .custom-profile-dropdown,
+      .custom-profile-dropdown:hover {
+        visibility: visible;
+        opacity: 1;
+      }
+    </style>
+    <div
+      class="bg-white dark:text-gray-200 dark:bg-gray-800 shadow m-5 p-5 rounded"
+    >
+      <div class="flex items-center justify-between h-16">
+        {{block "content" .}}{{end}}
+      </div>
+    </div>
+  </body>
+</html>

templates/documents.html

@@ -0,0 +1,51 @@
+{{template "base.html" .}} {{define "title"}}Documents{{end}} {{define
+"content"}}
+<div class="grid grid-cols-1 gap-4 my-4 md:grid-cols-2 lg:grid-cols-3">
+  {{range $doc := .Data }}
+  <div class="w-full">
+    <div class="flex gap-4 w-full p-4 bg-white shadow-lg dark:bg-gray-700 rounded">
+      <div class="min-w-fit h-48 relative">
+	<a href="./documents/{{$doc.ID}}/file">
+	  <img class="rounded object-cover h-full w-full" src="./documents/{{$doc.ID}}/cover"></img>
+	</a>
+      </div>
+      <div class="flex flex-col justify-around dark:text-white w-full text-xs">
+        <div class="inline-flex shrink-0 items-center">
+          <div>
+              <p class="text-gray-400">Title</p>
+              <p class="font-medium">
+                {{ or $doc.Title "Unknown" }}
+              </p>
+          </div>
+        </div>
+        <div class="inline-flex shrink-0 items-center">
+          <div>
+              <p class="text-gray-400">Author</p>
+              <p class="font-medium">
+                {{ or $doc.Author "Unknown" }}
+              </p>
+          </div>
+        </div>
+        <div class="inline-flex shrink-0 items-center">
+          <div>
+              <p class="text-gray-400">Progress</p>
+              <p class="font-medium">
+	      {{ $doc.CurrentPage }} / {{ $doc.TotalPages }} ({{ $doc.Percentage }}%)
+              </p>
+          </div>
+        </div>
+        <div class="inline-flex shrink-0 items-center">
+          <div>
+              <p class="text-gray-400">Minutes Read</p>
+              <p class="font-medium">
+	      {{ $doc.TotalTimeMinutes }} Minutes
+              </p>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+
+  {{end}}
+</div>
+{{end}}

templates/graph.svg

@@ -0,0 +1,35 @@
+<svg viewBox="0 0 {{ $data.Width }} {{ $data.Height }}" class="chart">
+  <!-- Box Graph -->
+  {{ range $idx, $item := $data.BarPoints }}
+  <g class="bar" transform="translate({{ $item.X }}, 0)" fill="gray">
+    <rect y="{{ $item.Y }}" height="{{ $item.Size }}" width="33"></rect>
+  </g>
+  {{ end }}
+
+  <!-- Linear Line Graph -->
+  <polyline
+    fill="none"
+    stroke="black"
+    stroke-width="2"
+    points="
+      {{ range $item := $data.LinePoints }}
+      {{ $item.X }},{{ $item.Y }}
+      {{ end }}
+      "
+  />
+
+  <!-- Bezier Curve Line Graph -->
+  <path
+    fill="#316BBE"
+    fill-opacity="0.5"
+    stroke="none"
+    d="{{ $data.BezierPath }} {{ $data.BezierFill }}"
+  />
+
+  <path
+    fill="none"
+    fill-opacity="0.1"
+    stroke="none"
+    d="{{ $data.BezierPath }}"
+  />
+</svg>

templates/graphs.html

@@ -0,0 +1,3 @@
+{{template "base.html" .}} {{define "title"}}Graphs{{end}} {{define "content"}}
+<h1>Graphs</h1>
+{{end}}

templates/header.html

@@ -0,0 +1,162 @@
+<nav class="bg-white dark:bg-gray-800 shadow">
+  <div class="px-8 mx-auto max-w-7xl">
+    <div class="flex items-center justify-between h-16">
+      <div class="flex items-center">
+        <div class="hidden md:block">
+          <div class="flex items-baseline space-x-4">
+            <a
+              class="text-gray-300 hover:text-gray-800 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium"
+              href="/"
+            >
+              Home
+            </a>
+            <a
+              class="text-gray-800 dark:text-white hover:text-gray-800 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium"
+              href="/documents"
+            >
+              Documents
+            </a>
+            <a
+              class="text-gray-300 hover:text-gray-800 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium"
+              href="/activity"
+            >
+              Activity
+            </a>
+            <a
+              class="text-gray-300 hover:text-gray-800 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium"
+              href="/graphs"
+            >
+              Graphs
+            </a>
+          </div>
+        </div>
+      </div>
+      <div class="block">
+        <div class="flex items-center ml-4 md:ml-6">
+          <div class="relative ml-3">
+            <div class="custom-profile-icon relative inline-block text-left">
+              <div>
+                <button
+                  type="button"
+                  class="flex items-center justify-center w-full rounded-md px-4 py-2 text-sm font-medium text-gray-700 dark:text-gray-50 hover:bg-gray-50 dark:hover:bg-gray-500 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-gray-100 focus:ring-gray-500"
+                  id="options-menu"
+                >
+                  <svg
+                    width="20"
+                    fill="currentColor"
+                    height="20"
+                    class="text-gray-800 dark:text-gray-200"
+                    viewBox="0 0 1792 1792"
+                    xmlns="http://www.w3.org/2000/svg"
+                  >
+                    <path
+                      d="M1523 1339q-22-155-87.5-257.5t-184.5-118.5q-67 74-159.5 115.5t-195.5 41.5-195.5-41.5-159.5-115.5q-119 16-184.5 118.5t-87.5 257.5q106 150 271 237.5t356 87.5 356-87.5 271-237.5zm-243-699q0-159-112.5-271.5t-271.5-112.5-271.5 112.5-112.5 271.5 112.5 271.5 271.5 112.5 271.5-112.5 112.5-271.5zm512 256q0 182-71 347.5t-190.5 286-285.5 191.5-349 71q-182 0-348-71t-286-191-191-286-71-348 71-348 191-286 286-191 348-71 348 71 286 191 191 286 71 348z"
+                    />
+                  </svg>
+                </button>
+              </div>
+            </div>
+            <div
+              class="custom-profile-dropdown transition duration-200 absolute right-0 w-56 pt-2 origin-top-right bg-white rounded-md shadow-lg dark:bg-gray-800 ring-1 ring-black ring-opacity-5"
+            >
+              <div
+                class="py-1"
+                role="menu"
+                aria-orientation="vertical"
+                aria-labelledby="options-menu"
+              >
+                <a
+                  href="#"
+                  class="block block px-4 py-2 text-md text-gray-700 hover:bg-gray-100 hover:text-gray-900 dark:text-gray-100 dark:hover:text-white dark:hover:bg-gray-600"
+                  role="menuitem"
+                >
+                  <span class="flex flex-col">
+                    <span> Settings </span>
+                  </span>
+                </a>
+                <a
+                  href="#"
+                  class="block block px-4 py-2 text-md text-gray-700 hover:bg-gray-100 hover:text-gray-900 dark:text-gray-100 dark:hover:text-white dark:hover:bg-gray-600"
+                  role="menuitem"
+                >
+                  <span class="flex flex-col">
+                    <span> Account </span>
+                  </span>
+                </a>
+                <a
+                  href="#"
+                  class="block block px-4 py-2 text-md text-gray-700 hover:bg-gray-100 hover:text-gray-900 dark:text-gray-100 dark:hover:text-white dark:hover:bg-gray-600"
+                  role="menuitem"
+                >
+                  <span class="flex flex-col">
+                    <span> Logout </span>
+                  </span>
+                </a>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+      <div class="flex -mr-2 md:hidden">
+        <button
+          class="text-gray-800 dark:text-white hover:text-gray-300 inline-flex items-center justify-center p-2 rounded-md focus:outline-none"
+        >
+          <svg
+            width="20"
+            height="20"
+            fill="currentColor"
+            class="w-8 h-8"
+            viewBox="0 0 1792 1792"
+            xmlns="http://www.w3.org/2000/svg"
+          >
+            <path
+              d="M1664 1344v128q0 26-19 45t-45 19h-1408q-26 0-45-19t-19-45v-128q0-26 19-45t45-19h1408q26 0 45 19t19 45zm0-512v128q0 26-19 45t-45 19h-1408q-26 0-45-19t-19-45v-128q0-26 19-45t45-19h1408q26 0 45 19t19 45zm0-512v128q0 26-19 45t-45 19h-1408q-26 0-45-19t-19-45v-128q0-26 19-45t45-19h1408q26 0 45 19t19 45z"
+            />
+          </svg>
+        </button>
+      </div>
+    </div>
+  </div>
+  <div class="md:hidden">
+    <div class="px-2 pt-2 pb-3 space-y-1 sm:px-3">
+      <a
+        class="text-gray-300 hover:text-gray-800 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium"
+        href="/#"
+      >
+        Home
+      </a>
+      <a
+        class="text-gray-800 dark:text-white block px-3 py-2 rounded-md text-base font-medium"
+        href="/#"
+      >
+        Gallery
+      </a>
+      <a
+        class="text-gray-300 hover:text-gray-800 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium"
+        href="/#"
+      >
+        Content
+      </a>
+      <a
+        class="text-gray-300 hover:text-gray-800 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium"
+        href="/#"
+      >
+        Contact
+      </a>
+    </div>
+  </div>
+</nav>
+
+<!-- Custom Animation CSS -->
+<style>
+  .custom-profile-dropdown {
+    visibility: hidden;
+    opacity: 0;
+  }
+
+  .custom-profile-icon:hover + .custom-profile-dropdown,
+  .custom-profile-dropdown:hover {
+    visibility: visible;
+    opacity: 1;
+  }
+</style>

templates/home.html

@@ -0,0 +1,235 @@
+{{template "base.html" .}} {{define "title"}}Home{{end}} {{define "content"}}
+
+<div class="w-full">
+  <div class="relative w-full px-4 py-4 bg-white shadow-lg dark:bg-gray-700">
+    <p
+      class="text-sm font-semibold text-gray-700 border-b border-gray-200 w-max dark:text-white dark:border-gray-500"
+    >
+      Daily Read Totals
+    </p>
+    {{ $data := (GetSVGGraphData .Data.GraphData 800)}}
+
+    <svg viewBox="0 0 {{ $data.Width }} {{ $data.Height }}">
+      <path
+        fill="#316BBE"
+        fill-opacity="0.5"
+        stroke="none"
+        d="{{ $data.BezierPath }} {{ $data.BezierFill }}"
+      />
+
+      <path fill="none" stroke="#316BBE" d="{{ $data.BezierPath }}" />
+
+      {{ range $index, $item := $data.LinePoints }}
+      <line
+        class="hover-trigger"
+        stroke="black"
+        stroke-opacity="0.0"
+        stroke-width="{{ $data.Offset }}"
+        x1="{{ $item.X }}"
+        x2="{{ $item.X }}"
+        y1="0"
+        y2="{{ $data.Height }}"
+      ></line>
+      <g class="hover-item">
+        <line
+          class="text-black dark:text-white"
+          stroke-opacity="0.2"
+          x1="{{ $item.X }}"
+          x2="{{ $item.X }}"
+          y1="30"
+          y2="{{ $data.Height }}"
+        ></line>
+        <text
+          class="text-black dark:text-white"
+          alignment-baseline="middle"
+          transform="translate({{ $item.X }}, 5) translate(-30, 8)"
+          font-size="10"
+        >
+          {{ (index $.Data.GraphData $index).Date }}
+        </text>
+        <text
+          class="text-black dark:text-white"
+          alignment-baseline="middle"
+          transform="translate({{ $item.X }}, 25) translate(-30, -2)"
+          font-size="10"
+        >
+          {{ (index $.Data.GraphData $index).MinutesRead }} minutes
+        </text>
+      </g>
+      {{ end }}
+    </svg>
+
+    <style>
+      /* Interactive Hover */
+      .hover-item {
+        visibility: hidden;
+        opacity: 0;
+      }
+      .hover-trigger:hover + .hover-item,
+      .hover-item:hover {
+        visibility: visible;
+        opacity: 1;
+      }
+
+      /* SVG Component Styling */
+      svg text.text-black {
+        fill: black;
+      }
+      svg line.text-black {
+        stroke: black;
+      }
+      @media (prefers-color-scheme: dark) {
+        svg text.dark\:text-white {
+          fill: white;
+        }
+        svg line.dark\:text-white {
+          stroke: white;
+        }
+      }
+    </style>
+  </div>
+</div>
+
+<div class="grid grid-cols-2 gap-4 my-4 md:grid-cols-4">
+  <div class="w-full">
+    <div
+      class="flex gap-4 w-full p-4 bg-white shadow-lg dark:bg-gray-700 rounded"
+    >
+      <div class="flex flex-col justify-around dark:text-white w-full text-xs">
+        <p class="text-2xl font-bold text-black dark:text-white">
+          {{ .Data.DatabaseInfo.DocumentsSize }}
+        </p>
+        <p class="text-sm text-gray-400">Documents</p>
+      </div>
+    </div>
+  </div>
+
+  <div class="w-full">
+    <div
+      class="flex gap-4 w-full p-4 bg-white shadow-lg dark:bg-gray-700 rounded"
+    >
+      <div class="flex flex-col justify-around dark:text-white w-full text-xs">
+        <p class="text-2xl font-bold text-black dark:text-white">
+          {{ .Data.DatabaseInfo.ActivitySize }}
+        </p>
+        <p class="text-sm text-gray-400">Activity Records</p>
+      </div>
+    </div>
+  </div>
+
+  <div class="w-full">
+    <div
+      class="flex gap-4 w-full p-4 bg-white shadow-lg dark:bg-gray-700 rounded"
+    >
+      <div class="flex flex-col justify-around dark:text-white w-full text-xs">
+        <p class="text-2xl font-bold text-black dark:text-white">
+          {{ .Data.DatabaseInfo.ProgressSize }}
+        </p>
+        <p class="text-sm text-gray-400">Progress Records</p>
+      </div>
+    </div>
+  </div>
+
+  <div class="w-full">
+    <div
+      class="flex gap-4 w-full p-4 bg-white shadow-lg dark:bg-gray-700 rounded"
+    >
+      <div class="flex flex-col justify-around dark:text-white w-full text-xs">
+        <p class="text-2xl font-bold text-black dark:text-white">
+          {{ .Data.DatabaseInfo.DevicesSize }}
+        </p>
+        <p class="text-sm text-gray-400">Devices</p>
+      </div>
+    </div>
+  </div>
+</div>
+
+<div class="grid grid-cols-1 gap-4 my-4 md:grid-cols-2 lg:grid-cols-3">
+  <div class="w-full">
+    <div class="relative w-full px-4 py-6 bg-white shadow-lg dark:bg-gray-700">
+      <p
+        class="text-sm font-semibold text-gray-700 border-b border-gray-200 w-max dark:text-white dark:border-gray-500"
+      >
+        Daily Read Streak
+      </p>
+      <div class="flex items-end my-6 space-x-2">
+        <p class="text-5xl font-bold text-black dark:text-white">
+          {{ .Data.DailyStreak.CurrentStreak }}
+        </p>
+      </div>
+      <div class="dark:text-white">
+        <div
+          class="flex items-center justify-between pb-2 mb-2 text-sm border-b border-gray-200"
+        >
+          <div>
+            <p>Current Daily Streak</p>
+            <div class="flex items-end text-xs text-gray-400">
+              {{ .Data.DailyStreak.CurrentStreakStartDate }} ➞ {{
+              .Data.DailyStreak.CurrentStreakEndDate }}
+            </div>
+          </div>
+          <div class="flex items-end font-bold">
+            {{ .Data.DailyStreak.CurrentStreak }}
+          </div>
+        </div>
+        <div class="flex items-center justify-between pb-2 mb-2 text-sm">
+          <div>
+            <p>Best Daily Streak</p>
+            <div class="flex items-end text-xs text-gray-400">
+              {{ .Data.DailyStreak.MaxStreakStartDate }} ➞ {{
+              .Data.DailyStreak.MaxStreakEndDate }}
+            </div>
+          </div>
+          <div class="flex items-end font-bold">
+            {{ .Data.DailyStreak.MaxStreak }}
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+
+  <div class="w-full">
+    <div class="relative w-full px-4 py-6 bg-white shadow-lg dark:bg-gray-700">
+      <p
+        class="text-sm font-semibold text-gray-700 border-b border-gray-200 w-max dark:text-white dark:border-gray-500"
+      >
+        Weekly Read Streak
+      </p>
+      <div class="flex items-end my-6 space-x-2">
+        <p class="text-5xl font-bold text-black dark:text-white">
+          {{ .Data.WeeklyStreak.CurrentStreak }}
+        </p>
+      </div>
+      <div class="dark:text-white">
+        <div
+          class="flex items-center justify-between pb-2 mb-2 text-sm border-b border-gray-200"
+        >
+          <div>
+            <p>Current Weekly Streak</p>
+            <div class="flex items-end text-xs text-gray-400">
+              {{ .Data.WeeklyStreak.CurrentStreakStartDate }} ➞ {{
+              .Data.WeeklyStreak.CurrentStreakEndDate }}
+            </div>
+          </div>
+          <div class="flex items-end font-bold">
+            {{ .Data.WeeklyStreak.CurrentStreak }}
+          </div>
+        </div>
+        <div class="flex items-center justify-between pb-2 mb-2 text-sm">
+          <div>
+            <p>Best Weekly Streak</p>
+            <div class="flex items-end text-xs text-gray-400">
+              {{ .Data.WeeklyStreak.MaxStreakStartDate }} ➞ {{
+              .Data.WeeklyStreak.MaxStreakEndDate }}
+            </div>
+          </div>
+          <div class="flex items-end font-bold">
+            {{ .Data.WeeklyStreak.MaxStreak }}
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</div>
+
+{{end}}

templates/login.html

@@ -0,0 +1,171 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width" />
+    <script src="https://cdn.tailwindcss.com"></script>
+  </head>
+  <body class="bg-gray-100 dark:bg-gray-800 dark:text-white">
+    <div class="flex flex-wrap w-full">
+      <div class="flex flex-col w-full md:w-1/2">
+        <div
+          class="flex flex-col justify-center px-8 pt-8 my-auto md:justify-start md:pt-0 md:px-24 lg:px-32"
+        >
+          <p class="text-3xl text-center">Welcome.</p>
+          <form
+            class="flex flex-col pt-3 md:pt-8"
+            {{if
+            .Register}}action="/register"
+            {{else}}action="/login"
+            {{end}}
+            method="POST"
+          >
+            <div class="flex flex-col pt-4">
+              <div class="flex relative">
+                <span
+                  class="inline-flex items-center px-3 border-t bg-white border-l border-b border-gray-300 text-gray-500 shadow-sm text-sm"
+                >
+                  <svg
+                    width="15"
+                    height="15"
+                    fill="currentColor"
+                    viewBox="0 0 1792 1792"
+                    xmlns="http://www.w3.org/2000/svg"
+                  >
+                    <path
+                      d="M1523 1339q-22-155-87.5-257.5t-184.5-118.5q-67 74-159.5 115.5t-195.5 41.5-195.5-41.5-159.5-115.5q-119 16-184.5 118.5t-87.5 257.5q106 150 271 237.5t356 87.5 356-87.5 271-237.5zm-243-699q0-159-112.5-271.5t-271.5-112.5-271.5 112.5-112.5 271.5 112.5 271.5 271.5 112.5 271.5-112.5 112.5-271.5zm512 256q0 182-71 347.5t-190.5 286-285.5 191.5-349 71q-182 0-348-71t-286-191-191-286-71-348 71-348 191-286 286-191 348-71 348 71 286 191 191 286 71 348z"
+                    ></path>
+                  </svg>
+                </span>
+                <input
+                  type="text"
+                  id="username"
+                  name="username"
+                  class="flex-1 appearance-none border border-gray-300 w-full py-2 px-4 bg-white text-gray-700 placeholder-gray-400 shadow-sm text-base focus:outline-none focus:ring-2 focus:ring-purple-600 focus:border-transparent"
+                  placeholder="Username"
+                />
+              </div>
+            </div>
+            <div class="flex flex-col pt-4 mb-12">
+              <div class="flex relative">
+                <span
+                  class="inline-flex items-center px-3 border-t bg-white border-l border-b border-gray-300 text-gray-500 shadow-sm text-sm"
+                >
+                  <svg
+                    width="15"
+                    height="15"
+                    fill="currentColor"
+                    viewBox="0 0 1792 1792"
+                    xmlns="http://www.w3.org/2000/svg"
+                  >
+                    <path
+                      d="M1376 768q40 0 68 28t28 68v576q0 40-28 68t-68 28h-960q-40 0-68-28t-28-68v-576q0-40 28-68t68-28h32v-320q0-185 131.5-316.5t316.5-131.5 316.5 131.5 131.5 316.5q0 26-19 45t-45 19h-64q-26 0-45-19t-19-45q0-106-75-181t-181-75-181 75-75 181v320h736z"
+                    ></path>
+                  </svg>
+                </span>
+                <input
+                  type="password"
+                  id="password"
+                  name="password"
+                  class="flex-1 appearance-none border border-gray-300 w-full py-2 px-4 bg-white text-gray-700 placeholder-gray-400 shadow-sm text-base focus:outline-none focus:ring-2 focus:ring-purple-600 focus:border-transparent"
+                  placeholder="Password"
+                />
+                <span class="absolute -bottom-5 text-red-400 text-xs"
+                  >{{ .Error }}</span
+                >
+              </div>
+            </div>
+            <button
+              type="submit"
+              class="w-full px-4 py-2 text-base font-semibold text-center text-white transition duration-200 ease-in bg-black shadow-md hover:text-black hover:bg-white focus:outline-none focus:ring-2"
+            >
+              {{if .Register}}
+              <span class="w-full"> Register </span>
+              {{else}}
+              <span class="w-full"> Submit </span>
+              {{end}}
+            </button>
+          </form>
+          <div class="pt-12 pb-12 text-center">
+            {{ if .Register }}
+            <p>
+              Trying to login?
+              <a href="./login" class="font-semibold underline">
+                Login here.
+              </a>
+            </p>
+            {{else}}
+            <p>
+              Don&#x27;t have an account?
+              <a href="./register" class="font-semibold underline">
+                Register here.
+              </a>
+            </p>
+            {{end}}
+          </div>
+        </div>
+      </div>
+      <div
+        class="hidden image-fader w-1/2 shadow-2xl h-screen relative md:block"
+      >
+        <img
+          class="w-full h-screen object-cover ease-in-out top-0 left-0"
+          src="/assets/book1.jpg"
+        />
+        <img
+          class="w-full h-screen object-cover ease-in-out top-0 left-0"
+          src="/assets/book2.jpg"
+        />
+        <img
+          class="w-full h-screen object-cover ease-in-out top-0 left-0"
+          src="/assets/book3.jpg"
+        />
+        <img
+          class="w-full h-screen object-cover ease-in-out top-0 left-0"
+          src="/assets/book4.jpg"
+        />
+      </div>
+    </div>
+    <style>
+      .image-fader img {
+        position: absolute;
+        animation-name: imagefade;
+        animation-iteration-count: infinite;
+        animation-duration: 60s;
+      }
+
+      @keyframes imagefade {
+        0% {
+          opacity: 1;
+        }
+        17% {
+          opacity: 1;
+        }
+        25% {
+          opacity: 0;
+        }
+        92% {
+          opacity: 0;
+        }
+        100% {
+          opacity: 1;
+        }
+      }
+
+      .image-fader img:nth-of-type(1) {
+        animation-delay: 45s;
+      }
+      .image-fader img:nth-of-type(2) {
+        animation-delay: 30s;
+      }
+      .image-fader img:nth-of-type(3) {
+        animation-delay: 15s;
+      }
+      .image-fader img:nth-of-type(4) {
+        animation-delay: 0;
+      }
+    </style>
+  </body>
+</html>
+
+<!-- https://stackoverflow.com/questions/60748752/change-an-image-after-some-time -->

utils/utils.go

@@ -0,0 +1,49 @@
+package utils
+
+import (
+	"bytes"
+	"crypto/md5"
+	// "encoding/hex"
+	"fmt"
+	"io"
+	"os"
+)
+
+func CalculatePartialMD5(filePath string) string {
+	file, err := os.Open(filePath)
+	if err != nil {
+		panic(err)
+	}
+
+	defer file.Close()
+
+	var step int64 = 1024
+	var size int64 = 1024
+	var buf bytes.Buffer
+
+	for i := -1; i <= 10; i++ {
+		byteStep := make([]byte, size)
+
+		var newShift int64 = int64(i * 2)
+		var newOffset int64
+		if i == -1 {
+			newOffset = 0
+		} else {
+			newOffset = step << newShift
+		}
+
+		_, err := file.ReadAt(byteStep, newOffset)
+		if err == io.EOF {
+			break
+		}
+		buf.Write(byteStep)
+	}
+
+	allBytes := buf.Bytes()
+	return fmt.Sprintf("%x", md5.Sum(allBytes))
+}
+
+func main() {
+	fileHash := CalculatePartialMD5("test.epub")
+	fmt.Println("MD5: ", fileHash)
+}