first pass?

backend/database.py

@@ -0,0 +1,88 @@
+from __future__ import annotations
+
+import aiosqlite
+import structlog
+
+from backend.config import settings
+
+logger = structlog.get_logger()
+
+SCHEMA = """
+CREATE TABLE IF NOT EXISTS users (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    name TEXT NOT NULL UNIQUE,
+    created_at TEXT DEFAULT (datetime('now'))
+);
+
+CREATE TABLE IF NOT EXISTS notes (
+    id TEXT PRIMARY KEY,
+    user_id INTEGER NOT NULL,
+    title TEXT DEFAULT '',
+    path TEXT NOT NULL,
+    created_at TEXT DEFAULT (datetime('now')),
+    updated_at TEXT DEFAULT (datetime('now')),
+    deleted_at TEXT,
+    FOREIGN KEY(user_id) REFERENCES users(id)
+);
+
+CREATE TABLE IF NOT EXISTS tags (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    name TEXT NOT NULL UNIQUE
+);
+
+CREATE TABLE IF NOT EXISTS note_tags (
+    note_id TEXT NOT NULL,
+    tag_id INTEGER NOT NULL,
+    PRIMARY KEY (note_id, tag_id),
+    FOREIGN KEY(note_id) REFERENCES notes(id),
+    FOREIGN KEY(tag_id) REFERENCES tags(id)
+);
+
+CREATE TABLE IF NOT EXISTS history (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    note_id TEXT NOT NULL,
+    user_id INTEGER NOT NULL,
+    action TEXT NOT NULL,
+    at TEXT DEFAULT (datetime('now')),
+    ip TEXT,
+    ua TEXT,
+    FOREIGN KEY(note_id) REFERENCES notes(id),
+    FOREIGN KEY(user_id) REFERENCES users(id)
+);
+
+CREATE VIRTUAL TABLE IF NOT EXISTS notes_fts USING fts5(
+    note_id UNINDEXED,
+    user_id UNINDEXED,
+    title,
+    body
+);
+"""
+
+
+async def init_db() -> None:
+    async with aiosqlite.connect(settings.database_path) as db:
+        db.row_factory = aiosqlite.Row
+        await db.executescript(SCHEMA)
+        await db.commit()
+    await seed_users()
+    logger.info("database_initialized", path=settings.database_path)
+
+
+async def seed_users() -> None:
+    async with aiosqlite.connect(settings.database_path) as db:
+        for name in settings.user_list:
+            await db.execute("INSERT OR IGNORE INTO users (name) VALUES (?)", (name,))
+        await db.commit()
+
+
+async def get_user_id(db: aiosqlite.Connection, name: str) -> int | None:
+    row = await db.execute("SELECT id FROM users WHERE name = ?", (name,))
+    row = await row.fetchone()
+    return row["id"] if row else None
+
+
+async def list_users() -> list[dict]:
+    async with aiosqlite.connect(settings.database_path) as db:
+        db.row_factory = aiosqlite.Row
+        rows = await db.execute("SELECT id, name FROM users ORDER BY name")
+        return [dict(r) for r in await rows.fetchall()]