const http = require("http");
const fs = require("fs");
const qs = require("querystring");
const dat = require("./data/data.json");
var logged = false;

const server = http.createServer((req, res) => {
    if (req.url === "/styles/styles.css") {
        res.statusCode = 200;
        res.setHeader("Content-Type", "text/css");
        fs.readFile("./styles/styles.css", (error, data) => {
            if (error) {
                res.writeHead(404);
                res.write("Error: File not found.");
            } else {
                res.write(data);
            }

            res.end();
        });
    }

    if (req.url === "/") {
        res.statusCode = 200;
        res.setHeader("Content-Type", "text/html");
        fs.readFile("./pages/landing.html", (error, data) => {
            if (error) {
                res.writeHead(404);
                res.write("Error: File not found.");
            } else {
                res.write(data);
            }

            res.end();
        });
    }

    if (req.url === "/about") {
        res.statusCode = 200;
        res.setHeader("Content-Type", "text/html");
        fs.readFile("./pages/about.html", (error, data) => {
            if (error) {
                res.writeHead(404);
                res.write("Error: File not found.");
            } else {
                res.write(data);
            }

            res.end();
        });
    }

    if (req.url === "/news") {
        res.statusCode = 200;
        res.setHeader("Content-Type", "text/html");
        fs.readFile("./pages/news.html", (error, data) => {
            if (error) {
                res.writeHead(404);
                res.write("Error: File not found.");
            } else {
                res.write(data);
            }

            res.end();
        });
    }

    if (req.url === "/contact") {
        res.statusCode = 200;
        res.setHeader("Content-Type", "text/html");
        fs.readFile("./pages/contact.html", (error, data) => {
            if (error) {
                res.writeHead(404);
                res.write("Error: File not found.");
            } else {
                res.write(data);
            }

            res.end();
        });
    }

    if (req.url === "/signup") {
        res.statusCode = 200;
        res.setHeader("Content-Type", "text/html");
        fs.readFile("./pages/signup.html", (error, data) => {
            if (error) {
                res.writeHead(404);
                res.wrtie("Error: File not found.");
            } else {
                res.write(data);
            }

            res.end();
        });
    }

    if (req.url === "/home" && logged === true) {
        res.statusCode = 200;
        res.setHeader("Content-Type", "text/html");
        fs.readFile("./pages/home.html", (error, data) => {
            if (error) {
                res.writeHead(404);
                res.write("Error: File not found.");
            } else {
                res.write(data);
            }

            res.end();
        });
    }

    if (req.url === "/not_logged_in") {
        res.statusCode = 200;
        res.setHeader("Content-Type", "text/html");
        fs.readFile("./pages/notlogged.html", (error, data) => {
            if (error) {
                res.writeHead(404);
                res.write("Error: File not found.");
            } else {
                res.write(data);
            }

            res.end();
        });
    }

    if (req.url === "/home" && !logged) {
        res.statusCode = 200;
        res.writeHead(301, { Location: "/not_logged_in" });
        res.end();
    }

    if (req.url === "/" && logged === true) {
        res.statusCode = 200;
        res.writeHead(301, { Location: "/home" });
        res.end();
    }

    if (req.url === "/unlog") {
        res.statusCode = 200;
        res.setHeader("Content-Type", "text/html");
        fs.readFile("./pages/logout.html", (error, data) => {
            if (error) {
                res.writeHead(404);
                res.write("Error: File not found.");
            } else {
                logged = false;
                res.write(data);
            }

            res.end();
        });
    }

    if (req.url === "/wrong_info") {
        res.statusCode = 200;
        res.setHeader("Content-Type", "text/html");
        fs.readFile("./pages/wronginfo.html", (error, data) => {
            if (error) {
                res.writeHead(404);
                res.write("Error: File not found.");
            } else {
                res.write(data);
            }

            res.end();
        });
    }

    if (req.url === "/members" && req.method === "POST") {
        res.statusCode = 200;
        var body = "";

        req.on("data", (data) => {
            body = body + data;
        });

        req.on("end", () => {
            var post = qs.parse(body);
            dat.forEach(i => {
                if (post.username === i.username && post.password === i.password) {
                    logged = true;
                }
            });

            if (logged === true) {
                res.writeHead(301, { Location: "/home" });
            } else {
                res.writeHead(301, { Location: "/wrong_info" });
            }

            res.end();
        })
    }
});

const port = process.env.port || 9000;

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