build 1

backend/src/database.ts

@@ -0,0 +1,57 @@
+import Database from 'better-sqlite3';
+import path from 'path';
+
+const DB_PATH = process.env.DATABASE_PATH || path.join(__dirname, '../../data/tracker.db');
+
+let db: Database.Database;
+
+export function getDb(): Database.Database {
+  if (!db) {
+    db = new Database(DB_PATH);
+    db.pragma('journal_mode = WAL');
+    initSchema(db);
+  }
+  return db;
+}
+
+function initSchema(db: Database.Database): void {
+  db.exec(`
+    CREATE TABLE IF NOT EXISTS watched_items (
+      id INTEGER PRIMARY KEY AUTOINCREMENT,
+      url TEXT NOT NULL UNIQUE,
+      name TEXT,
+      thumbnail_url TEXT,
+      check_interval INTEGER NOT NULL DEFAULT 60,
+      is_active INTEGER NOT NULL DEFAULT 1,
+      last_status TEXT NOT NULL DEFAULT 'unknown',
+      alert_sent INTEGER NOT NULL DEFAULT 0,
+      check_count INTEGER NOT NULL DEFAULT 0,
+      last_checked_at TEXT,
+      created_at TEXT NOT NULL DEFAULT (datetime('now'))
+    );
+
+    CREATE TABLE IF NOT EXISTS settings (
+      key TEXT PRIMARY KEY,
+      value TEXT NOT NULL DEFAULT ''
+    );
+
+    INSERT OR IGNORE INTO settings (key, value) VALUES ('telegram_bot_token', '');
+    INSERT OR IGNORE INTO settings (key, value) VALUES ('telegram_chat_id', '');
+  `);
+}
+
+export type StockStatus = 'in_stock' | 'sold_out' | 'unknown';
+
+export interface WatchedItem {
+  id: number;
+  url: string;
+  name: string | null;
+  thumbnail_url: string | null;
+  check_interval: number;
+  is_active: number;
+  last_status: StockStatus;
+  alert_sent: number;
+  check_count: number;
+  last_checked_at: string | null;
+  created_at: string;
+}