import { PrismaMariaDb } from "@prisma/adapter-mariadb";
import { env } from "@/env";
import { PrismaClient } from "@/generated/prisma/client";
import { resolvePrismaConnectionLimit } from "@/lib/prisma-pool";

const globalForPrisma = globalThis as unknown as { prisma?: PrismaClient };

function createPrismaClient(): PrismaClient {
	const url = new URL(env.DATABASE_URL);
	const isBuild =
		process.env.NEXT_PHASE === "phase-production-build" ||
		process.env.NEXT_PHASE === "phase-production-compile";
	const connectionLimit = resolvePrismaConnectionLimit(env.DATABASE_POOL_SIZE);
	// Fail fast during SSG so Next can retry/fallback instead of hanging 30s+.
	const connectTimeout = isBuild
		? Math.min(env.DATABASE_CONNECT_TIMEOUT_MS, 5_000)
		: env.DATABASE_CONNECT_TIMEOUT_MS;
	const adapter = new PrismaMariaDb({
		host: url.hostname,
		port: Number(url.port) || 3306,
		user: decodeURIComponent(url.username),
		password: decodeURIComponent(url.password),
		database: url.pathname.replace(/^\//, ""),
		connectionLimit,
		connectTimeout,
		acquireTimeout: connectTimeout,
		idleTimeout: env.DATABASE_IDLE_TIMEOUT_MS,
	});
	return new PrismaClient({
		adapter,
		log: env.NODE_ENV === "development" ? ["error", "warn"] : ["error"],
	});
}

export const prisma = globalForPrisma.prisma ?? createPrismaClient();

if (env.NODE_ENV !== "production") globalForPrisma.prisma = prisma;