Merge pull request #66 from call-0f-code/db-fix

multiple Prisma instances fix

Author: callofcode07

src/db/client.ts

@@ -1,11 +1,35 @@
 import { PrismaPg } from "@prisma/adapter-pg";
 import { PrismaClient } from "../generated/prisma/client";
+import { Pool } from "pg";
 export * from "../generated/prisma/client";
 
-const adapter = new PrismaPg({
-  connectionString: process.env.DATABASE_URL,
-});
+const globalForPrisma = globalThis as unknown as {
+  prisma?: PrismaClient;
+  pgPool?: Pool;
+};
+
+const pool =
+  globalForPrisma.pgPool ??
+  new Pool({
+    connectionString: process.env.DATABASE_URL,
+  });
+
+const adapter = new PrismaPg(pool);
+
+export const prisma =
+  globalForPrisma.prisma ??
+  new PrismaClient({
+    adapter,
+    log:
+      process.env.NODE_ENV === "development"
+        ? ["query", "error", "warn"]
+        : ["error"],
+  });
+
+if (process.env.NODE_ENV !== "production") {
+  globalForPrisma.prisma = prisma;
+  globalForPrisma.pgPool = pool;
+}
 
-const prisma = new PrismaClient({ adapter });
 
 export default prisma;