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

const TEST_DATABASE_URL = process.env['DATABASE_URL'] ??
  'postgresql://mcpctl:mcpctl_test@localhost:5433/mcpctl_test';

let prisma: PrismaClient | undefined;
let schemaReady = false;

export function getTestClient(): PrismaClient {
  if (!prisma) {
    prisma = new PrismaClient({
      datasources: { db: { url: TEST_DATABASE_URL } },
    });
  }
  return prisma;
}

export async function setupTestDb(): Promise<PrismaClient> {
  const client = getTestClient();

  // Only push schema once per process (multiple test files share the worker)
  if (!schemaReady) {
    execSync('npx prisma db push --force-reset --skip-generate', {
      cwd: new URL('..', import.meta.url).pathname,
      env: {
        ...process.env,
        DATABASE_URL: TEST_DATABASE_URL,
        // Consent required when Prisma detects AI agent context.
        // This targets the ephemeral test database (tmpfs-backed, port 5433).
        PRISMA_USER_CONSENT_FOR_DANGEROUS_AI_ACTION: 'yes',
      },
      stdio: 'pipe',
    });
    schemaReady = true;
  }

  return client;
}

export async function cleanupTestDb(): Promise<void> {
  if (prisma) {
    await prisma.$disconnect();
    prisma = undefined;
  }
}

export async function clearAllTables(client: PrismaClient): Promise<void> {
  // Delete in order respecting foreign keys
  await client.auditLog.deleteMany();
  await client.mcpInstance.deleteMany();
  await client.secret.deleteMany();
  await client.session.deleteMany();
  await client.project.deleteMany();
  await client.mcpServer.deleteMany();
  await client.mcpTemplate.deleteMany();
  await client.user.deleteMany();
}