Stand vor Einführung des Nacht-Agenten

packages/platform/src/db.ts

@@ -0,0 +1,44 @@
+import mysql from 'mysql2/promise';
+import type { Pool, PoolConnection, RowDataPacket, ResultSetHeader } from 'mysql2/promise';
+import { config } from './config.js';
+
+export const pool: Pool = mysql.createPool({
+  ...config.db,
+  connectionLimit: 10,
+  charset: 'utf8mb4',
+  timezone: 'Z',
+  dateStrings: false,
+  namedPlaceholders: false,
+});
+
+// Alle Zeiten in UTC, auch die DB-Defaults (CURRENT_TIMESTAMP) – sonst Versatz zur Serverzeit.
+(pool as unknown as { on(e: string, f: (c: { query(s: string): void }) => void): void }).on('connection', (c) => c.query("SET time_zone = '+00:00'"));
+
+export type Row = RowDataPacket;
+type Exec = Pick<Pool | PoolConnection, 'execute'>;
+
+export async function query<T extends Row = Row>(sql: string, params: unknown[] = [], c: Exec = pool): Promise<T[]> {
+  const [rows] = await c.execute<T[]>(sql, params as never[]);
+  return rows;
+}
+export async function one<T extends Row = Row>(sql: string, params: unknown[] = [], c: Exec = pool): Promise<T | undefined> {
+  return (await query<T>(sql, params, c))[0];
+}
+export async function run(sql: string, params: unknown[] = [], c: Exec = pool): Promise<ResultSetHeader> {
+  const [res] = await c.execute<ResultSetHeader>(sql, params as never[]);
+  return res;
+}
+export async function tx<T>(fn: (c: PoolConnection) => Promise<T>): Promise<T> {
+  const c = await pool.getConnection();
+  try {
+    await c.beginTransaction();
+    const out = await fn(c);
+    await c.commit();
+    return out;
+  } catch (e) {
+    await c.rollback();
+    throw e;
+  } finally {
+    c.release();
+  }
+}