init

server/database.ts

@@ -0,0 +1,83 @@
+import { Database } from "bun:sqlite";
+
+export interface BillingSnapshot {
+  id: number;
+  created_at: string;
+  timezone: string;
+  raw_json: string;
+}
+
+export class DatabaseManager {
+  private db: Database;
+
+  constructor(dbPath: string = "./app.db") {
+    this.db = new Database(dbPath);
+    this.initDatabase();
+  }
+
+  private initDatabase() {
+    this.db.run(`
+      CREATE TABLE IF NOT EXISTS billing_snapshots (
+        id INTEGER PRIMARY KEY AUTOINCREMENT,
+        created_at TEXT NOT NULL,
+        timezone TEXT NOT NULL DEFAULT 'Asia/Shanghai',
+        raw_json TEXT NOT NULL
+      )
+    `);
+    this.db.run(`
+      CREATE INDEX IF NOT EXISTS idx_billing_snapshots_created_at ON billing_snapshots(created_at)
+    `);
+  }
+
+  insertSnapshot(rawJson: string, timezone: string = 'Asia/Shanghai'): number {
+    const stmt = this.db.prepare(`
+      INSERT INTO billing_snapshots (created_at, timezone, raw_json)
+      VALUES (?, ?, ?)
+    `);
+    
+    const result = stmt.run(
+      new Date().toISOString(),
+      timezone,
+      rawJson
+    );
+    
+    return result.lastInsertRowid as number;
+  }
+
+  getSnapshots(): BillingSnapshot[] {
+    const stmt = this.db.prepare(`
+      SELECT id, created_at, timezone, raw_json 
+      FROM billing_snapshots 
+      ORDER BY datetime(created_at) ASC
+    `);
+    
+    return stmt.all() as BillingSnapshot[];
+  }
+
+  getSnapshotById(id: number): BillingSnapshot | null {
+    const stmt = this.db.prepare(`
+      SELECT id, created_at, timezone, raw_json 
+      FROM billing_snapshots 
+      WHERE id = ?
+    `);
+    
+    return stmt.get(id) as BillingSnapshot | null;
+  }
+
+  getLatestSnapshot(): BillingSnapshot | null {
+    const stmt = this.db.prepare(`
+      SELECT id, created_at, timezone, raw_json 
+      FROM billing_snapshots 
+      ORDER BY datetime(created_at) DESC 
+      LIMIT 1
+    `);
+    
+    return stmt.get() as BillingSnapshot | null;
+  }
+
+  close() {
+    this.db.close();
+  }
+}
+
+export const db = new DatabaseManager(process.env.DATABASE_URL || "./app.db");