import { PrismaClient } from '@prisma/client';
import { fileURLToPath, pathToFileURL } from 'node:url';
import path from 'node:path';

declare global {
  // eslint-disable-next-line no-var
  var __vectorPrisma: PrismaClient | undefined;
}

function resolveSqliteUrl(raw: string | undefined): string | undefined {
  if (!raw || !raw.startsWith('file:')) return raw;
  const rest = raw.slice('file:'.length).replace(/^\/+/, '');
  if (path.isAbsolute(rest) || /^[A-Za-z]:[\\/]/.test(rest)) {
    return 'file:' + rest.replace(/\\/g, '/');
  }
  const here = path.dirname(fileURLToPath(import.meta.url));
  const schemaDir = path.resolve(here, '..', 'prisma');
  const absolute = path.resolve(schemaDir, rest);
  return 'file:' + absolute.replace(/\\/g, '/');
}

const url = resolveSqliteUrl(process.env.DATABASE_URL);

export const prisma: PrismaClient =
  globalThis.__vectorPrisma ??
  new PrismaClient({
    datasources: url ? { db: { url } } : undefined,
    log: process.env.NODE_ENV === 'production' ? ['error'] : ['warn', 'error'],
  });

if (process.env.NODE_ENV !== 'production') {
  globalThis.__vectorPrisma = prisma;
}