import express from "express";
import dotenv from "dotenv";
import UserRoute from "./app/routes/user.route.js";
import ChannelRoute from "./app/routes/channel.route.js";
import VideoRoute from "./app/routes/video.route.js";
import CommentRoute from "./app/routes/comment.route.js";
import RecommendationRoute from "./app/routes/redommendation.route.js";
import * as http from "node:http";
import cors from "cors";
import PlaylistRoute from "./app/routes/playlist.route.js";
import {initDb} from "./app/utils/database.js";
import MediaRoutes from "./app/routes/media.routes.js";
import SearchRoute from "./app/routes/search.route.js";

console.clear();
dotenv.config();


const app = express();

// CORS Configuration for production deployment
const corsOptions = {
    origin: function (origin, callback) {
        // Allow requests with no origin (like mobile apps or curl requests)
        if (!origin) return callback(null, true);

        // Get allowed origins from environment variable
        const allowedOrigins = process.env.CORS_ORIGIN ?
            process.env.CORS_ORIGIN.split(',').map(url => url.trim()) :
            ['http://localhost:3000', 'https://localhost', 'http://localhost'];

        if (allowedOrigins.indexOf(origin) !== -1) {
            callback(null, true);
        } else {
            console.warn(`CORS blocked origin: ${origin}`);
            callback(new Error('Not allowed by CORS'));
        }
    },
    credentials: true,
    methods: ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],
    allowedHeaders: ['Content-Type', 'Authorization', 'X-Requested-With'],
    optionsSuccessStatus: 200 // Some legacy browsers choke on 204
};

// INITIALIZE DATABASE

// Increase body size limits for file uploads
app.use(express.urlencoded({extended: true, limit: '500mb'}));
app.use(express.json({limit: '500mb'}));
app.use(cors(corsOptions))

// ROUTES
app.use("/api/users/", UserRoute);
app.use("/api/channels/", ChannelRoute);
app.use("/api/videos/", VideoRoute);
app.use("/api/comments/", CommentRoute);
app.use("/api/playlists", PlaylistRoute);
app.use("/api/recommendations", RecommendationRoute);
app.use("/api/media", MediaRoutes);
app.use("/api/search", SearchRoute);

const port = process.env.PORT;

if (process.env.NODE_ENV !== "test") {
    const server = http.createServer(app);
    server.listen(port, '0.0.0.0', async () => {
        console.log("Server's listening on port " + port);
        console.log("Initializing database...");
        await initDb();
        console.log("Database initialized successfully.");
    });
}

export default app;