Initial Commit

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;