import Fastify from 'fastify';
import cors from '@fastify/cors';
import cookie from '@fastify/cookie';
import dbPlugin from './plugins/db.js';
import authPlugin from './plugins/auth.js';
import authRoutes from './routes/auth/index.js';
import organizationRoutes from './routes/organizations/index.js';
import nodeRoutes from './routes/nodes/index.js';
import serverRoutes from './routes/servers/index.js';
import adminRoutes from './routes/admin/index.js';
import { AppError } from './lib/errors.js';

const app = Fastify({
  logger: {
    transport:
      process.env.NODE_ENV !== 'production'
        ? { target: 'pino-pretty' }
        : undefined,
  },
});

// Plugins
await app.register(cors, {
  origin: process.env.CORS_ORIGIN || 'http://localhost:5173',
  credentials: true,
});

await app.register(cookie);
await app.register(dbPlugin);
await app.register(authPlugin);

// Error handler
app.setErrorHandler((error: Error & { validation?: unknown; statusCode?: number; code?: string }, _request, reply) => {
  if (error instanceof AppError) {
    return reply.code(error.statusCode).send({
      error: error.name,
      message: error.message,
      code: error.code,
    });
  }

  // Fastify validation errors
  if (error.validation) {
    return reply.code(400).send({
      error: 'Validation Error',
      message: error.message,
    });
  }

  app.log.error(error);
  return reply.code(500).send({
    error: 'Internal Server Error',
    message: 'An unexpected error occurred',
  });
});

// Routes
app.get('/api/health', async () => {
  return { status: 'ok', timestamp: new Date().toISOString() };
});

await app.register(authRoutes, { prefix: '/api/auth' });
await app.register(organizationRoutes, { prefix: '/api/organizations' });
await app.register(adminRoutes, { prefix: '/api/admin' });

// Nested org routes: nodes and servers are scoped to an org
await app.register(
  async (orgScope) => {
    await orgScope.register(nodeRoutes, { prefix: '/nodes' });
    await orgScope.register(serverRoutes, { prefix: '/servers' });
  },
  { prefix: '/api/organizations/:orgId' },
);

// Start
const PORT = Number(process.env.PORT) || 3000;
const HOST = process.env.HOST || '0.0.0.0';

try {
  await app.listen({ port: PORT, host: HOST });
  app.log.info(`API server running on http://${HOST}:${PORT}`);
} catch (err) {
  app.log.error(err);
  process.exit(1);
}