chore: move the server to an independent folder

server/apps/api/src/libs/db.ts

@@ -0,0 +1,41 @@
+import type { Env } from './env'
+
+import pg from 'pg'
+
+import { useLogger } from '@guiiai/logg'
+import { migrations } from '@proj-airi/drizzle-migration'
+import { migrate } from '@proj-airi/drizzle-orm-browser-migrator/pg'
+import { drizzle } from 'drizzle-orm/node-postgres'
+
+import * as fullSchema from '../schemas'
+
+const logger = useLogger('db')
+
+export type Database = ReturnType<typeof createDrizzle>['db']
+
+type DrizzleEnv = Pick<Env, 'DATABASE_URL' | 'DB_POOL_MAX' | 'DB_POOL_IDLE_TIMEOUT_MS' | 'DB_POOL_CONNECTION_TIMEOUT_MS' | 'DB_POOL_KEEPALIVE_INITIAL_DELAY_MS'>
+
+// NOTICE: pg is imported statically here. The OTEL instrumentation hooks are
+// registered via --import ./instrumentation.ts (preload) which runs before
+// tsx loads application modules, allowing require-in-the-middle to patch pg.
+export function createDrizzle(env: DrizzleEnv) {
+  const pool = new pg.Pool({
+    connectionString: env.DATABASE_URL,
+    max: env.DB_POOL_MAX,
+    idleTimeoutMillis: env.DB_POOL_IDLE_TIMEOUT_MS,
+    connectionTimeoutMillis: env.DB_POOL_CONNECTION_TIMEOUT_MS,
+    keepAlive: true,
+    keepAliveInitialDelayMillis: env.DB_POOL_KEEPALIVE_INITIAL_DELAY_MS,
+  })
+
+  pool.on('error', (err) => {
+    logger.withError(err).error('Unexpected pool error on idle client')
+  })
+
+  const db = drizzle(pool, { schema: fullSchema })
+  return { db, pool }
+}
+
+export function migrateDatabase(db: Database) {
+  return migrate(db, migrations)
+}