require('dotenv').config();
const Fastify = require('fastify');
const cors = require('@fastify/cors');
const swagger = require('@fastify/swagger');
const swaggerUi = require('@fastify/swagger-ui');

const accountRoutes = require('./routes/accounts');
const domainRoutes = require('./routes/domains');
const dnsRoutes = require('./routes/dns');
const { startTokenScheduler } = require('../lib/token-scheduler');
const { startWorker } = require('../lib/job-worker');
const { execSync } = require('child_process');

async function setupDatabase() {
  console.log('Setting up database...');
  try {
    execSync('npx prisma generate', { stdio: 'inherit' });
    execSync('npx prisma db push --accept-data-loss', { stdio: 'inherit' });
    console.log('Database setup complete');
  } catch (err) {
    console.error('Database setup failed:', err.message);
    throw err;
  }
}

const fastify = Fastify({
  logger: true
});

async function build() {
  await fastify.register(cors, {
    origin: true
  });

  await fastify.register(swagger, {
    openapi: {
      info: {
        title: 'Zone.ID Domain Registration API',
        description: 'API for managing zone.id and nett.to domain registrations and DNS records',
        version: '1.0.0'
      },
      servers: [
        { url: 'http://localhost:5000', description: 'Development server' }
      ],
      components: {
        securitySchemes: {
          apiKey: {
            type: 'apiKey',
            name: 'X-API-Key',
            in: 'header'
          }
        }
      }
    }
  });

  await fastify.register(swaggerUi, {
    routePrefix: '/docs',
    uiConfig: {
      docExpansion: 'list',
      deepLinking: false
    }
  });

  fastify.addHook('onRequest', async (request, reply) => {
    const publicRoutes = ['/docs', '/docs/', '/docs/json', '/docs/yaml', '/health', '/'];
    const isPublic = publicRoutes.some(route => request.url.startsWith(route));
    
    if (isPublic) return;

    const expectedApiKey = process.env.API_KEY;
    if (!expectedApiKey) {
      return;
    }

    const apiKey = request.headers['x-api-key'];
    if (!apiKey || apiKey !== expectedApiKey) {
      reply.code(401).send({ error: 'Invalid or missing API key' });
      return;
    }
  });

  fastify.get('/', {
    schema: {
      hide: true
    }
  }, async () => {
    return {
      name: 'Zone.ID Domain Registration API',
      version: '1.0.0',
      docs: '/docs'
    };
  });

  fastify.get('/health', {
    schema: {
      hide: true
    }
  }, async () => {
    return { status: 'ok' };
  });

  await fastify.register(accountRoutes, { prefix: '/api/accounts' });
  await fastify.register(domainRoutes, { prefix: '/api/domains' });
  await fastify.register(dnsRoutes, { prefix: '/api/dns' });

  return fastify;
}

async function start() {
  try {
    await setupDatabase();
    
    const port = parseInt(process.env.PORT) || 5000;
    const host = process.env.HOST || '0.0.0.0';
    const server = await build();
    await server.listen({ port, host });
    console.log(`Server running at http://${host}:${port}`);
    console.log(`API Documentation at http://${host}:${port}/docs`);
    
    startTokenScheduler();
    console.log('Token auto-refresh scheduler started (checks every 6 hours)');
    
    startWorker();
    console.log('Domain job worker started (polling every 5 seconds)');
  } catch (err) {
    console.error(err);
    process.exit(1);
  }
}

start();