fix: wait for database during API startup

server/src/db/migrate.ts

@@ -4,8 +4,31 @@ import { fileURLToPath } from 'node:url';
 import { pool, closePool } from './pool.js';
 
 const migrationsDirectory = join(dirname(fileURLToPath(import.meta.url)), '../../migrations');
+const databaseRetryDelayMs = 2_000;
+const databaseRetryAttempts = 30;
+
+const delay = (milliseconds: number) => new Promise<void>((resolve) => setTimeout(resolve, milliseconds));
+
+async function waitForDatabase() {
+  let lastError: unknown;
+
+  for (let attempt = 1; attempt <= databaseRetryAttempts; attempt += 1) {
+    try {
+      await pool.query('select 1');
+      return;
+    } catch (error) {
+      lastError = error;
+      if (attempt === databaseRetryAttempts) break;
+      console.warn(`Database is not ready (attempt ${attempt}/${databaseRetryAttempts}); retrying in 2 seconds.`);
+      await delay(databaseRetryDelayMs);
+    }
+  }
+
+  throw lastError;
+}
 
 async function migrate() {
+  await waitForDatabase();
   await pool.query(`
     create table if not exists schema_migrations (
       name text primary key,