import { PrismaClient } from '@prisma/client';
import path from 'node:path';

/**
 * The Prisma CLI resolves a relative SQLite path (`file:./dev.db`) against the schema directory
 * (`prisma/`), but inside a bundled Nitro output it would resolve against the copied client and
 * open an empty database. Resolve relative sqlite paths against `<cwd>/prisma` so the runtime and
 * the CLI always agree. Absolute paths and non-sqlite URLs are passed through unchanged.
 */
function resolveDatabaseUrl(): string | undefined {
  const url = process.env.DATABASE_URL;
  if (!url || !url.startsWith('file:')) return url;
  const file = url.slice('file:'.length);
  if (path.isAbsolute(file)) return url;
  return `file:${path.resolve(process.cwd(), 'prisma', file)}`;
}

// A single PrismaClient per process.
const globalForPrisma = globalThis as unknown as { prisma?: PrismaClient };

export const db =
  globalForPrisma.prisma ?? new PrismaClient({ datasources: { db: { url: resolveDatabaseUrl() } } });

if (process.env.NODE_ENV !== 'production') globalForPrisma.prisma = db;