import express from 'express'
import cors from 'cors'
import rateLimit from 'express-rate-limit'
import swaggerUi from 'swagger-ui-express'
import { swaggerSpec } from './config/swagger'
import { getSearchResults, getLinkForResource } from './controllers/searchController'
import { RedisService } from './services/redisService'
import logger from './lib/logger'

const app = express()

// 初始化 Redis 服务
const redisService = RedisService.getInstance();
redisService.initialize().catch(err => {
  logger.error('Redis 服务初始化失败，应用启动终止', { error: err })
  process.exit(1)
})

app.use(cors())
app.use(express.json())
app.use(rateLimit({ windowMs: 1000, max: 5 }))

// Swagger UI
app.use('/api-docs', swaggerUi.serve, swaggerUi.setup(swaggerSpec))

// API Documentation in JSON format
app.get('/api-docs.json', (req, res) => {
  res.setHeader('Content-Type', 'application/json')
  res.send(swaggerSpec)
})

// 搜索接口
app.get('/api/search', getSearchResults)

// 生成临时链接接口
app.get('/api/link/:resourceId', getLinkForResource)

// 健康检查
app.get('/health', (req, res) => {
  res.json({ status: 'ok' })
})

export default app