import express from "express";
import cors from "cors";
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';
import http from "http";
import dotenv from "dotenv";
// import listingRoutes from "./routes/listingRoutes.js";
import locationRoutes from "./routes/locationRoutes.js";
import chatRoutes from "./routes/chatRoutes.js";
import userRoutes from "./routes/userRoutes.js";
import { initSocket } from "./socket.js";
import { startExpirationJob } from "./jobs/expirationJob.js";

// Import middleware (in correct order)
import requestContext from "./middleware/requestContext.js";
import { auditLoggerMiddleware } from "./services/auditLogger.js";

import registerListingsApi from "./routes/listings.route.js";
import CommonApiBuilder from "./core/builders/CommonApiBuilder.js";
// import JwtAuthMiddleware from "./core/middleware/JwtAuthMiddleware.js";
// import RateLimiterMiddleware from "./core/middleware/RateLimiterMiddleware.js";

import dbClient from "./core/db/client.js";

// Load environment variables
dotenv.config();

const app = express();

// Trust proxy for correct IP addresses (important for rate limiting)
if (process.env.TRUST_PROXY === 'true' || process.env.TRUST_PROXY === '1') {
  app.set('trust proxy', true);
}

app.use(cors());
app.use(express.json());

// =====================================================
// MIDDLEWARE CHAIN (IMPORTANT ORDER)
// =====================================================
// 1. Request Context (FIRST - extracts IP, user agent, etc.)
app.use(requestContext);

// 2. Audit Logger (attach logger to request)
app.use(auditLoggerMiddleware);

// Serve static files from public directory
const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
app.use(express.static(join(__dirname, 'public')));

const PORT = process.env.PORT || 3200;


const common = new CommonApiBuilder(app)
  // .use(new JwtAuthMiddleware())
  // .use(new RateLimiterMiddleware(rateLimiterRead))
  // .use(new CoarseAuthMiddleware(['USER', 'ADMIN']))
  .build();

// register ALL listing APIs
registerListingsApi("/listings", common, dbClient);

// Add routes here
app.use("/locations", locationRoutes);
app.use("/chat", chatRoutes);
app.use("/users", userRoutes);

const server = http.createServer(app);
initSocket(server);

// Start Background Jobs
startExpirationJob();

server.listen(PORT, () => {
	console.log(`BuySellService is running on port ${PORT}`);
});