import Fastify from 'fastify';
import cors from '@fastify/cors';
import jwt from '@fastify/jwt';
import swagger from '@fastify/swagger';
import swaggerUi from '@fastify/swagger-ui';
import {env} from './config/env';
import {errorHandler} from './middleware/errorHandler';
import {authRoutes} from './routes/auth';
import {assetRoutes} from './routes/assets';
import {liabilityRoutes} from './routes/liability.routes';
import {clientRoutes} from './routes/client.routes';
import {invoiceRoutes} from './routes/invoice.routes';
import {netWorthRoutes} from './routes/networth.routes';
import {debtRoutes} from './routes/debt.routes';
import {cashflowRoutes} from './routes/cashflow.routes';
import {dashboardRoutes} from './routes/dashboard.routes';

/**
 * Create and configure Fastify server
 * Implements Single Responsibility: Server configuration
 */
export async function buildServer() {
  const fastify = Fastify({
    logger: {
      level: env.NODE_ENV === 'development' ? 'info' : 'error',
      transport: env.NODE_ENV === 'development' ? {target: 'pino-pretty'} : undefined,
    },
  });

  // Register plugins
  await fastify.register(cors, {
    origin: env.CORS_ORIGIN,
    credentials: true,
  });

  await fastify.register(jwt, {
    secret: env.JWT_SECRET,
    sign: {
      expiresIn: env.JWT_EXPIRES_IN,
    },
  });

  // Register Swagger for API documentation
  await fastify.register(swagger, {
    openapi: {
      info: {
        title: 'Personal Finances API',
        description: 'API for managing personal finances including assets, liabilities, invoices, and more',
        version: '1.0.0',
      },
      servers: [
        {
          url: `http://localhost:${env.PORT}`,
          description: 'Development server',
        },
      ],
      components: {
        securitySchemes: {
          bearerAuth: {
            type: 'http',
            scheme: 'bearer',
            bearerFormat: 'JWT',
          },
        },
      },
    },
  });

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

  // Register error handler
  fastify.setErrorHandler(errorHandler);

  // Health check
  fastify.get('/health', async () => ({
    status: 'ok',
    timestamp: new Date().toISOString(),
  }));

  // Register routes
  await fastify.register(authRoutes, {prefix: '/api/auth'});
  await fastify.register(assetRoutes, {prefix: '/api/assets'});
  await fastify.register(liabilityRoutes, {prefix: '/api/liabilities'});
  await fastify.register(clientRoutes, {prefix: '/api/clients'});
  await fastify.register(invoiceRoutes, {prefix: '/api/invoices'});
  await fastify.register(netWorthRoutes, {prefix: '/api/net-worth'});
  await fastify.register(debtRoutes, {prefix: '/api/debts'});
  await fastify.register(cashflowRoutes, {prefix: '/api/cashflow'});
  await fastify.register(dashboardRoutes, {prefix: '/api/dashboard'});

  return fastify;
}