# Book PWA

# Development

SQLC Generation:

```
go install github.com/sqlc-dev/sqlc/cmd/sqlc@latest
~/go/bin/sqlc generate
```

Run Development:

```
CONFIG_PATH=./config_data go run cmd/main.go serve
```

## Notes

- Books can potentially be updated, deleted, added
- Read activity is static, but can be added and deleted
- Icons: https://www.svgrepo.com/collection/solar-bold-icons

### Data

- ./settings/bookinfo_cache.sqlite3

  - Contains Deleted Books

  ```
  SELECT directory, filename, title, authors FROM bookinfo;
  ```

- ./settings/statistics.sqlite3

  - Contains Deleted Books

  ```
  SELECT * from book;
  ```

### Client New Plugin Logic

Background Processes: https://github.com/koreader/koreader/blob/master/plugins/coverbrowser.koplugin/bookinfomanager.lua#L682C11-L701
Check if Files Exist: https://github.com/koreader/koreader/blob/master/plugins/coverbrowser.koplugin/bookinfomanager.lua#L582
API Client: https://github.com/koreader/koreader/blob/master/plugins/kosync.koplugin/KOSyncClient.lua
Spore Upload File: https://fperrad.frama.io/lua-Spore/spore/#global-functions

- POST /sync/documents/check

  ```
  DATA: { "have": [id1, id2] }
  RESP: {
    "want": [id1],
    "give": [{...doc_data}],
    "delete": [id2]
  }
  ```

- PUT /sync/documents/file/<ID> (IF WANT, FOR EACH)

  ```
  DATA: ID FILE
  RESP: {status:ok}
  ```

- POST /sync/documents (IF WANT)

  ```
  DATA: [{...doc_data}]
  RESP: {status:ok}
  ```

- GET /sync/documents/file/<ID> (FOR EACH IF GIVE & FILE DOESNT EXIST)

  ```
  DATA: ID FILE
  ```

### Schema

Books Schema (User Agnostic):

- Hash Identifier (X BYTES MD5)
- MD5 (Actual MD5)
- Filepath
- Title
- Author
- Series
- Series Index
- Language
- Description
- LastUpdated
- WantMetadata Flag (Default TRUE)
- IsDeleted Flag (Default FALSE)

Device Schema:

- ID
- UserID
- DeviceName

BookDeviceSync Schema:

- UserID
- BookID
- DeviceID
- LastSynced
- Sync (DEFAULT TRUE)

BookProgress Schema:

- UserID
- BookID
- DeviceID
- Percentage
- Progress
- CreateAt

BookReadActivity Schema:

- UserID
- BookID
- DeviceID
- StartTime
- Duration (Seconds)
- CurrentPage
- TotalPages
- CreatedAt

### Notes

- If user has book on device, set BookDeviceSync.Sync = TRUE

### Other

```
POST /sync/all/check
  DATA: {
    books: [{ md5, percentage }, ...]
    last_activity: <TS>
  }


POST /sync/all/check
  DATA: {
    books: [{ md5: <MD5>, last_open: <TS> }],
    last_activity: <TS>
  }

  RESP: {
    add: {
      books: [],
      activity: []
    },
    want: {
      books: [],
      activity_after: <TS>
    }


    books: ["<MD51>", "MD52"],
    activity_since: <TS>
  }

POST /sync/all




// Get server books
GET /sync/books
  RESP: ["id1"]

// Send missing books
POST /sync/books
  DATA: [{...book1 }, {...book2}, ...]
  RESP: {status: ok}

// Get server activity
GET /sync/activity
  RESP: [
    { device_id: <DEV_ID>, last_activity: <TIMSTAMP> },
    { device_id: <DEV_ID>, last_activity: <TIMSTAMP> },
    ...
  ]

// Send missing activity
POST /sync/activity
  DATA: [{..activity}, {...activity}, ...]
```

## TODO - Server

- [ ] Build Sync API
- [ ] Add Statistics Endpoint

  - Separate App?
  - Modified Sync Lua Plugin?

  - PUT /syncs/progress

    ```
    {
      // Original Parameters
      document: <MD5>
      progress:
      percentage:
      device:
      device_id:
    }
    ```

  - POST /syncs/statistics

    ```
    {
      book_id: <MD5>,
      page: 123,
      start_time: 1693403388,
      duration: 8,
    }
    ```

## Goals

- Logins
- Plugins
- PWA
  - Store Books in IndexDB (Limit: 500MB or half of available storage)
  - Dark Mode
  - Service Worker Resource Cache (i.e. Offline capable)
- Sync State API - Compatible with KOReader Sync API
  - User Support
- Library Genesis Integration
- OPDS Integration

## Pages

- Settings
- Reader
- Downloader
-