feat(db): 配置 Drizzle ORM 与 PostgreSQL 静态连接池

drizzle.config.ts

@@ -0,0 +1,8 @@
+import { defineConfig } from "drizzle-kit";
+
+export default {
+  schema: "./src/db/schema.ts",
+  out: "./drizzle",
+  dialect: "postgresql",
+  dbCredentials: { url: process.env.DATABASE_URL! },
+} satisfies Parameters<typeof defineConfig>[0];

package.json

@@ -1,4 +1,4 @@
-{
+{
   "name": "temp-next",
   "version": "0.1.0",
   "private": true,
@@ -6,7 +6,10 @@
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
-    "lint": "eslint"
+    "lint": "eslint",
+    "db:generate": "drizzle-kit generate",
+    "db:push": "drizzle-kit push",
+    "db:studio": "drizzle-kit studio"
   },
   "dependencies": {
     "bcryptjs": "^3.0.3",
@@ -28,4 +31,4 @@
     "tsx": "^4.21.0",
     "typescript": "^5"
   }
-}
+}

src/db/index.ts

@@ -0,0 +1,20 @@
+import { drizzle } from "drizzle-orm/postgres-js";
+import postgres from "postgres";
+import type { PostgresJsDatabase } from "drizzle-orm/postgres-js";
+import dotenv from "dotenv";
+
+dotenv.config();
+
+const connectionString = process.env.DATABASE_URL!;
+const driver = postgres(connectionString, { max: 1 });
+let db: PostgresJsDatabase = drizzle(driver);
+
+if (process.env.NODE_ENV !== "production") {
+  const g = globalThis as unknown as { drizzleClient: PostgresJsDatabase };
+  if (!g.drizzleClient) {
+    g.drizzleClient = db;
+  }
+  db = g.drizzleClient;
+}
+
+export { db };