import "dotenv/config";
import express from "express";
import cors from "cors";
import helmet from "helmet";
import compression from "compression";
import rateLimit from "express-rate-limit";
import config from "./config/environment";
import { logger } from "./utils/logger";
import { errorHandler } from "./middleware/errorHandler";

// 라우터 임포트
import authRoutes from "./routes/authRoutes";
import adminRoutes from "./routes/adminRoutes";
import multilangRoutes from "./routes/multilangRoutes";
import tableManagementRoutes from "./routes/tableManagementRoutes";
import screenManagementRoutes from "./routes/screenManagementRoutes";
import commonCodeRoutes from "./routes/commonCodeRoutes";
import dynamicFormRoutes from "./routes/dynamicFormRoutes";
// import userRoutes from './routes/userRoutes';
// import menuRoutes from './routes/menuRoutes';

const app = express();

// 기본 미들웨어
app.use(helmet());
app.use(compression());
app.use(express.json({ limit: "10mb" }));
app.use(express.urlencoded({ extended: true, limit: "10mb" }));

// CORS 설정
app.use(
  cors({
    origin: config.cors.origin,
    credentials: true,
    methods: ["GET", "POST", "PUT", "DELETE", "PATCH", "OPTIONS"],
    allowedHeaders: ["Content-Type", "Authorization", "X-Requested-With"],
  })
);

// Rate Limiting (개발 환경에서는 완화)
const limiter = rateLimit({
  windowMs: 1 * 60 * 1000, // 1분
  max: config.nodeEnv === "development" ? 1000 : 100, // 개발환경에서는 1000, 운영환경에서는 100
  message: {
    error: "너무 많은 요청이 발생했습니다. 잠시 후 다시 시도해주세요.",
  },
  skip: (req) => {
    // 헬스 체크는 Rate Limiting 제외
    return req.path === "/health";
  },
});
app.use("/api/", limiter);

// 헬스 체크 엔드포인트
app.get("/health", (req, res) => {
  res.status(200).json({
    status: "OK",
    timestamp: new Date().toISOString(),
    uptime: process.uptime(),
    environment: config.nodeEnv,
  });
});

// API 라우터
app.use("/api/auth", authRoutes);
app.use("/api/admin", adminRoutes);
app.use("/api/multilang", multilangRoutes);
app.use("/api/table-management", tableManagementRoutes);
app.use("/api/screen-management", screenManagementRoutes);
app.use("/api/common-codes", commonCodeRoutes);
app.use("/api/dynamic-form", dynamicFormRoutes);
// app.use('/api/users', userRoutes);
// app.use('/api/menus', menuRoutes);

// 404 핸들러
app.use("*", (req, res) => {
  res.status(404).json({
    success: false,
    message: "요청한 리소스를 찾을 수 없습니다.",
    path: req.originalUrl,
  });
});

// 에러 핸들러
app.use(errorHandler);

// 서버 시작
const PORT = config.port;

app.listen(PORT, () => {
  logger.info(`🚀 Server is running on port ${PORT}`);
  logger.info(`📊 Environment: ${config.nodeEnv}`);
  logger.info(`🔗 Health check: http://localhost:${PORT}/health`);
});

export default app;