Phase 3. 인증 및 공통 레이아웃 작업

lib/db.ts

@@ -0,0 +1,25 @@
+import { PrismaMariaDb } from "@prisma/adapter-mariadb";
+
+import { PrismaClient } from "@/lib/generated/prisma/client";
+
+const globalForPrisma = globalThis as unknown as {
+  prisma?: PrismaClient;
+};
+
+function createPrismaClient() {
+  const databaseUrl = process.env.DATABASE_URL;
+
+  if (!databaseUrl) {
+    throw new Error("DATABASE_URL is required to initialize Prisma Client.");
+  }
+
+  const adapter = new PrismaMariaDb(databaseUrl);
+
+  return new PrismaClient({ adapter });
+}
+
+export const db = globalForPrisma.prisma ?? createPrismaClient();
+
+if (process.env.NODE_ENV !== "production") {
+  globalForPrisma.prisma = db;
+}