require("dotenv").config();
const express = require("express");
const http = require("http");
const cookieParser = require("cookie-parser");
const mongoose = require("mongoose");
const { Server } = require("socket.io");
const connectDB = require("./configs/db");
const { env, validateServerConfig } = require("./configs/env");
const { registerSocketServer } = require("./socket/socketServer");
const { errorHandler, notFound } = require("./middleware/errorMiddleware");
const compression = require("compression");

validateServerConfig();
connectDB();

const app = express();
app.set("trust proxy", 1);

// ========================================================
// 1. DYNAMIC CORS FORCE (SOLUSI SAPU JAGAT)
// ========================================================
app.use((req, res, next) => {
  const origin = req.headers.origin;
  
  // Izinkan SEMUA origin (karena kita tidak pakai include credentials lagi, ini aman)
  res.setHeader("Access-Control-Allow-Origin", origin || "*");
  res.setHeader("Access-Control-Allow-Methods", "GET, POST, PUT, PATCH, DELETE, OPTIONS");
  res.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, Authorization, Cookie, Cache-Control, Pragma, Expires");

  if (req.method === "OPTIONS") {
    return res.status(200).send("OK");
  }

  res.on('finish', () => {
    if (req.originalUrl !== "/api/health") {
      console.log(`[${new Date().toLocaleTimeString()}] ${req.method} ${req.originalUrl} | Status: ${res.statusCode}`);
    }
  });
  next();
});

// ========================================================
// 2. MIDDLEWARE STANDAR
// ========================================================
app.use(compression());
app.use(express.json({ limit: "50mb" }));
app.use(express.urlencoded({ extended: true, limit: "50mb" }));
app.use(cookieParser());

// --- Routes API ---
app.get("/", (req, res) => res.json({ message: "API Server 7860 Active" }));

app.use("/api/auth", require("./routes/authRoutes"));
app.use("/api/admin", require("./routes/adminUserRoutes"));
app.use("/api/faculty", require("./routes/facultyRoutes"));
app.use("/api/documents", require("./routes/documentRoutes"));
app.use("/api/media", require("./routes/mediaRoutes"));
app.use("/api/achievements", require("./routes/achievementRoutes"));
app.use("/api/announcements", require("./routes/announcementRoutes"));
app.use("/api/admissions", require("./routes/admissionRoutes"));
app.use("/api/about", require("./routes/aboutUsRoutes"));
app.use("/api/site-content", require("./routes/siteContentRoutes"));
app.use("/api/audit-trails", require("./routes/auditTrailRoutes"));
app.use("/api/admin/errors", require("./routes/errorLogRoutes"));

app.use(notFound);
app.use(errorHandler);

const PORT = 7860; 
const server = http.createServer(app);
const io = new Server(server, { cors: { origin: true, credentials: true } });
registerSocketServer(io);

server.listen(PORT, "0.0.0.0", () => {
  console.log(`-----------------------------------------`);
  console.log(`SERVER RUNNING ON PORT ${PORT}`);
  console.log(`DEMO READY: SEMUA DOMAIN VERCEL DIIZINKAN`);
  console.log(`-----------------------------------------`);
});