const express = require("express");
const bcrypt = require("bcrypt");
const randtoken = require("rand-token");

const router = express.Router();

const db = require("../modules/db");
const mail = require("../modules/mail");
const telegram = require("../modules/telegram");
const auth = require("../auth/auth");

const saltRounds = 10;

let config;
try {
    config = require("../config");
} catch (e) {
    console.log("No config file found");
    process.exit(0);
}

router.get("/getproducts", (req, res) => {
    const conn = db.connect();
    conn.execute("SELECT * FROM `products`", [], function (err, results) {
        res.json(results);
        db.disconnect(conn);
    });
});

router.get("/getproduct", (req, res) => {
    const conn = db.connect();
    conn.execute(
        "SELECT * FROM `products` WHERE `ID` = ?",
        [req.query.id],
        function (err, results) {
            res.json(results);
            db.disconnect(conn);
        }
    );
});

router.post("/register", async (req, res) => {
    if (
        !req.body.email ||
        !req.body.password ||
        !req.body.first_name ||
        !req.body.last_name
    ) {
        res.status(400);
        res.json({
            message: "Bad Request",
        });
    } else {
        const conn = db.connect();
        conn.query(
            "SELECT * FROM users WHERE email = ?",
            [req.body.email],
            async function (error, response, fields) {
                if (error) {
                    res.status(400);
                    res.json({
                        message: "Bad Request",
                    });
                } else {
                    if (response.length > 0) {
                        res.status(400);
                        res.json({
                            message: "Bad Request",
                        });
                    } else {
                        const encryptedPassword = await bcrypt.hash(
                            req.body.password,
                            saltRounds
                        );
                        let otptoken = randtoken.generate(64);
                        var users = {
                            first_name: req.body.first_name,
                            last_name: req.body.last_name,
                            email: req.body.email,
                            password: encryptedPassword,
                            session: "[]",
                            otp: 0,
                            otpcode: 0,
                            otptoken: otptoken,
                            otpto: 0,
                            otpservice: "",
                        };
                        conn.query(
                            "INSERT INTO users SET ?",
                            users,
                            function (error, response, fields) {
                                if (error) {
                                    res.status(400);
                                    res.json({
                                        message: "Bad Request",
                                    });
                                } else {
                                    conn.query(
                                        'SELECT * FROM users WHERE email ="' + req.body.email + '"',
                                        function (err, result) {
                                            if (err) {
                                                res.status(400);
                                                res.json({
                                                    message: "Bad Request",
                                                });
                                            }
                                            if (result.length > 0) {
                                                var token = randtoken.generate(20);
                                                if (result[0].verify == 0) {
                                                    let subject = "Account Verification - Nekoya";
                                                    let content = `<p>Hello!!! Please click this link <a href="${config.url}/verify-mail?token=${token}">link</a> to verify your account!!! Thanks!!!</p>`;
                                                    var sent = mail.send(
                                                        req.body.email,
                                                        subject,
                                                        content
                                                    );
                                                    if (sent != "0") {
                                                        var data = {
                                                            token: token,
                                                        };
                                                        conn.query(
                                                            'UPDATE users SET ? WHERE email ="' +
                                                            req.body.email +
                                                            '"',
                                                            data,
                                                            function (err, result) {
                                                                if (err) {
                                                                    res.status(400);
                                                                    res.json({
                                                                        message: "Bad Request",
                                                                    });
                                                                } else {
                                                                    res.status(200);
                                                                    res.json({
                                                                        message: "Register Verification Sent ~",
                                                                    });
                                                                }
                                                                db.disconnect(conn);
                                                            }
                                                        );
                                                    } else {
                                                        res.status(400);
                                                        res.json({
                                                            message: "Bad Request",
                                                        });
                                                    }
                                                }
                                            } else {
                                                res.status(400);
                                                res.json({
                                                    message: "Bad Request",
                                                });
                                            }
                                        }
                                    );
                                }
                            }
                        );
                    }
                }
            }
        );
    }
});

router.post("/login", async (req, res) => {
    if (!req.body.email || !req.body.password) {
        res.status(400);
        res.json({
            message: "Bad Request",
        });
    } else {
        const conn = db.connect();
        conn.query(
            "SELECT * FROM users WHERE email = ?",
            [req.body.email],
            async function (error, response, fields) {
                if (!response[0]) {
                    res.status(205);
                    res.json({
                        message: "Sorry Your email is not registered in our system",
                    });
                } else {
                    const passCheck = await bcrypt.compare(
                        req.body.password,
                        response[0].password
                    );
                    if (error) {
                        res.status(400);
                        res.json({
                            message: "Bad Request",
                        });
                    } else {
                        if (response.length > 0) {
                            if (passCheck) {
                                if (response[0].verify == 0) {
                                    res.status(204);
                                    res.json({
                                        message: "Sorry You haven't verified your email",
                                    });
                                } else {
                                    if (response[0].otp == 1) {
                                        let otptoken = randtoken.generate(64);
                                        let otpcode = Math.floor(100000 + Math.random() * 900000);
                                        telegram.send(
                                            response[0].otpto,
                                            `<b>OTP CODE</b>\n\n<code>${otpcode}</code>`
                                        );
                                        conn.query(
                                            'UPDATE users SET ? WHERE email ="' + req.body.email + '"', {
                                                otpcode: otpcode,
                                                otptoken: otptoken,
                                            },
                                            function (err, result) {
                                                if (err) {
                                                    res.status(400);
                                                    res.json({
                                                        message: "Bad Request",
                                                    });
                                                } else {
                                                    res.status(200);
                                                    res.json({
                                                        message: "OTP Verification Sent ~",
                                                        otp: response[0].otp == 1 ? true : false,
                                                        token: otptoken,
                                                    });
                                                }
                                                db.disconnect(conn);
                                            }
                                        );
                                    } else {
                                        let token = randtoken.generate(256);
                                        let session = JSON.parse(response[0].session);
                                        session.push({
                                            user_agent: req.body.ua || req.headers["user-agent"],
                                            ip: req.body.ip ||
                                                req.headers["x-forwarded-for"] ||
                                                req.socket.remoteAddress,
                                            session: token,
                                        });
                                        conn.query(
                                            'UPDATE users SET ? WHERE email ="' + req.body.email + '"', {
                                                session: JSON.stringify(session),
                                            },
                                            function (err, result) {
                                                if (err) {
                                                    res.status(400);
                                                    res.json({
                                                        message: "Bad Request",
                                                    });
                                                } else {
                                                    res.status(200);
                                                    res.json({
                                                        id: response[0].id,
                                                        first_name: response[0].first_name,
                                                        last_name: response[0].last_name,
                                                        email: response[0].email,
                                                        verify: response[0].verify == 1 ? true : false,
                                                        otp: response[0].otp == 1 ? true : false,
                                                        session_token: token,
                                                    });
                                                }
                                                db.disconnect(conn);
                                            }
                                        );
                                    }
                                }
                            } else {
                                res.status(401);
                                res.json({
                                    message: "Unauthorized",
                                });
                            }
                        } else {
                            res.status(400);
                            res.json({
                                message: "Bad Request",
                            });
                        }
                    }
                }
            }
        );
    }
});

router.post("/otp-submit", async (req, res) => {
    if (!req.body.code || !req.body.token) {
        res.status(400);
        res.json({
            message: "Bad Request",
        });
    } else {
        const conn = db.connect();
        conn.query(
            "SELECT * FROM users WHERE otptoken = ?",
            [req.body.token],
            async function (error, response, fields) {
                if (!response[0]) {
                    res.status(401);
                    res.json({
                        message: "Unauthorized",
                    });
                } else {
                    conn.query(
                        "SELECT * FROM users WHERE otpcode = ?",
                        [req.body.code],
                        async function (error, response, fields) {
                            if (!response[0]) {
                                res.status(403);
                                res.json({
                                    message: "Invalid OTP Code",
                                });
                            } else {
                                let token = randtoken.generate(256);
                                let session = JSON.parse(response[0].session);
                                session.push({
                                    user_agent: req.headers["user-agent"],
                                    ip: req.body.ip ||
                                        req.headers["x-forwarded-for"] ||
                                        req.socket.remoteAddress,
                                    session: token,
                                });
                                conn.query(
                                    'UPDATE users SET ? WHERE otpcode ="' + req.body.code + '"', {
                                        session: JSON.stringify(session),
                                        otpcode: 0,
                                        otptoken: randtoken.generate(64)
                                    },
                                    function (err, result) {
                                        if (err) {
                                            res.status(400);
                                            res.json({
                                                message: "Bad Request",
                                            });
                                        } else {
                                            res.status(200);
                                            res.json({
                                                id: response[0].id,
                                                first_name: response[0].first_name,
                                                last_name: response[0].last_name,
                                                email: response[0].email,
                                                verify: response[0].verify == 1 ? true : false,
                                                otp: response[0].otp == 1 ? true : false,
                                                session_token: token,
                                            });
                                        }
                                        db.disconnect(conn);
                                    }
                                );
                            }
                        }
                    );
                }
            }
        );
    }
});

router.post("/otp-toggle", async (req, res) => {
    if (!req.query.key && !req.query.session_token) {
        res.status(401);
        res.json({
            message: "Unauthorized",
        });
    } else {
        let _key;
        if (req.query.session_token) {
            _key = await auth.session_converter(req.query.session_token).then((key) => {
                return key;
            });
        } else if (req.query.key) {
            _key = req.query.key;
        }
        auth.auth_checker(_key).then((status) => {
            if (status) {
                const conn = db.connect();
                conn.query(
                    "SELECT * FROM users WHERE token = ?",
                    [_key],
                    async function (error, response, fields) {
                        if (error) {
                            res.status(401);
                            res.json({
                                message: "Unauthorized",
                            });
                        } else {
                            let otp = response[0].otp == 1 ? true : false;
                            if (otp) {
                                otp = false;
                            } else {
                                otp = true;
                            }
                            conn.query(
                                'UPDATE users SET ? WHERE token ="' + _key + '"', {
                                    otp: otp == true ? 1 : 0,
                                },
                                function (err, result) {
                                    if (err) {
                                        res.status(400);
                                        res.json({
                                            message: "Bad Request",
                                        });
                                    } else {
                                        res.status(200);
                                        res.json({
                                            message: `Success set OTP to ${otp}`,
                                            otp: otp,
                                        });
                                    }
                                    db.disconnect(conn);
                                }
                            );
                        }
                    }
                );
            }
        });
    }
});

router.post("/verify-mail", async (req, res) => {
    const conn = db.connect();
    conn.query(
        'SELECT * FROM users WHERE token ="' + req.body.token + '"',
        function (err, result) {
            if (err) {
                res.status(400);
                res.json({
                    message: "Bad Request",
                });
            }
            if (result.length > 0) {
                if (result[0].verify == 0) {
                    var data = {
                        verify: 1,
                        token: randtoken.generate(64),
                    };
                    conn.query(
                        'UPDATE users SET ? WHERE email ="' + result[0].email + '"',
                        data,
                        function (err, result) {
                            if (err) {
                                res.status(400);
                                res.json({
                                    message: "Bad Request",
                                });
                            } else {
                                res.status(200);
                                res.json({
                                    message: "Verified ~",
                                });
                            }
                            db.disconnect(conn);
                        }
                    );
                } else {
                    res.status(403);
                    res.json({
                        message: "Forbidden",
                    });
                }
            } else {
                res.status(400);
                res.json({
                    message: "Bad Request",
                });
            }
        }
    );
});

router.post("/request-reset-password", async (req, res) => {
    if (!req.body.email) {
        res.status(400);
        res.json({
            message: "Bad Request",
        });
    } else {
        const conn = db.connect();
        conn.query(
            "SELECT * FROM users WHERE email = ?",
            [req.body.email],
            async function (error, response, fields) {
                if (!response[0]) {
                    res.status(205);
                    res.json({
                        message: "Sorry Your email is not registered in our system",
                    });
                } else {
                    let subject = "Reset Password - Nekoya";
                    let content = `<p>Hello!!! Please click this link <a href="${config.url}/reset-password?token=${response[0].token}">link</a> to reset your account password!!! Thanks!!!</p>`;
                    var sent = mail.send(
                        req.body.email,
                        subject,
                        content
                    );
                    if (sent != "0") {
                        res.status(200);
                        res.json({
                            message: "Reset Password Verification Sent ~",
                        });
                    } else {
                        res.status(400);
                        res.json({
                            message: "Bad Request",
                        });
                    }
                }
                db.disconnect(conn);
            }
        );
    }
});

router.post("/reset-password", async (req, res) => {
    if (!req.query.token) {
        res.status(401);
        res.json({
            message: "Unauthorized",
        });
    } else {
        auth.auth_checker(req.query.token).then((status) => {
            if (status) {
                if (!req.body.password) {
                    res.status(400);
                    res.json({
                        message: "Bad Request",
                    });
                } else {
                    const conn = db.connect();
                    conn.query(
                        'SELECT * FROM users WHERE token ="' + req.query.token + '"',
                        async function (err, result) {
                            if (err) {
                                res.status(400);
                                res.json({
                                    message: "Bad Request",
                                });
                            }
                            if (result.length > 0) {
                                const encryptedPassword = await bcrypt.hash(
                                    req.body.password,
                                    saltRounds
                                );
                                var data = {
                                    password: encryptedPassword,
                                    token: randtoken.generate(64),
                                };
                                conn.query(
                                    'UPDATE users SET ? WHERE email ="' + result[0].email + '"',
                                    data,
                                    function (err, result) {
                                        if (err) {
                                            res.status(400);
                                            res.json({
                                                message: "Bad Request",
                                            });
                                        } else {
                                            res.status(200);
                                            res.json({
                                                message: "Success Reset Password ~",
                                            });
                                        }
                                        db.disconnect(conn);
                                    }
                                );
                            } else {
                                res.status(400);
                                res.json({
                                    message: "Bad Request",
                                });
                            }
                        }
                    );
                }
            } else {
                res.status(401);
                res.json({
                    message: "Unauthorized",
                });
            }
        });
    }
});

router.post("/sessions", async (req, res) => {
    if (!req.query.key && !req.query.session_token) {
        res.status(401);
        res.json({
            message: "Unauthorized",
        });
    } else {
        let _key;
        if (req.query.session_token) {
            _key = await auth.session_converter(req.query.session_token).then((key) => {
                return key;
            });
        } else if (req.query.key) {
            _key = req.query.key;
        }
        auth.auth_checker(_key).then((status) => {
            if (status) {
                const conn = db.connect();
                conn.query(
                    "SELECT * FROM users WHERE token = ?",
                    [_key],
                    async function (error, response, fields) {
                        if (error) {
                            res.status(401);
                            res.json({
                                message: "Unauthorized",
                            });
                        } else {
                            res.status(200);
                            res.json(JSON.parse(response[0].session));
                        }
                    }
                );
            }
        });
    }
});

router.post("/checkout", async (req, res) => {
    if (!req.query.key && !req.query.session_token) {
        res.status(401);
        res.json({
            message: "Unauthorized",
        });
    } else {
        let _key;
        if (req.query.session_token) {
            _key = await auth.session_converter(req.query.session_token).then((key) => {
                return key;
            });
        } else if (req.query.key) {
            _key = req.query.key;
        }
        auth.auth_checker(_key).then((status) => {
            if (status) {
                if (
                    !req.body.firstName ||
                    !req.body.lastName ||
                    !req.body.phoneNumber ||
                    !req.body.streetAddress1 ||
                    !req.body.streetAddress2 ||
                    !req.body.region ||
                    !req.body.province ||
                    !req.body.city ||
                    !req.body.district ||
                    !req.body.subDistrict ||
                    !req.body.postalCode ||
                    !req.body.logistic ||
                    !req.body.data
                ) {
                    res.status(400);
                    res.json({
                        message: "Bad Request",
                    });
                } else {
                    const conn = db.connect();
                    conn.query(
                        "SELECT * FROM users WHERE token = ?",
                        [_key],
                        async function (error, resp, fields) {
                            if (error) {
                                res.status(401);
                                res.json({
                                    message: "Unauthorized",
                                });
                            } else {
                                var data = {
                                    firstName: req.body.firstName,
                                    lastName: req.body.lastName,
                                    phoneNumber: req.body.phoneNumber,
                                    streetAddress1: req.body.streetAddress1,
                                    streetAddress2: req.body.streetAddress2,
                                    region: req.body.region,
                                    province: req.body.province,
                                    city: req.body.city,
                                    district: req.body.district,
                                    subDistrict: req.body.subDistrict,
                                    postalCode: req.body.postalCode,
                                    logistic: req.body.logistic,
                                    paymentMethod: '-',
                                    data: req.body.data,
                                    userId: resp[0].id,
                                    paid: '0',
                                    status: 'pending'
                                };
                                conn.query(
                                    "INSERT INTO transactions SET ?",
                                    data,
                                    function (error, response, fields) {
                                        if (error) {
                                            res.status(400);
                                            res.json({
                                                message: "Bad Request",
                                            });
                                        } else {
                                            conn.query(
                                            'SELECT * FROM transactions WHERE id ="' + response.insertId + '"',
                                            function (err, result) {
                                                if (err) {
                                                    res.status(400);
                                                    res.json({
                                                        message: "Bad Request",
                                                    });
                                                } else {
                                                    res.status(201);
                                                    res.json({
                                                        'order_id': result[0].id,
                                                        'data': result[0].data
                                                    });
                                                }
                                                db.disconnect(conn);
                                            });
                                        }
                                    }
                                );
                            }
                        }
                    );
                }
            } else {
                res.status(401);
                res.json({
                    message: "Unauthorized",
                });
            }
        });
    }
});

router.post("/transaction", async (req, res) => {
    if (!req.query.key && !req.query.session_token) {
        res.status(401);
        res.json({
            message: "Unauthorized",
        });
    } else {
        let _key;
        if (req.query.session_token) {
            _key = await auth.session_converter(req.query.session_token).then((key) => {
                return key;
            });
        } else if (req.query.key) {
            _key = req.query.key;
        }
        auth.auth_checker(_key).then((status) => {
            if (status) {
                const conn = db.connect();
                conn.query(
                    "SELECT * FROM users WHERE token = ?",
                    [_key],
                    async function (error, response, fields) {
                        if (error) {
                            res.status(401);
                            res.json({
                                message: "Unauthorized",
                            });
                        } else {
                            conn.query(
                                "SELECT * FROM transactions WHERE userId = ?",
                                [response[0].id],
                                async function (error, resp, fields) {
                                    if (error) {
                                        res.status(400);
                                        res.json({
                                            message: "Bad Request",
                                        });
                                    } else {
                                        res.status(200);
                                        res.json(resp);
                                    }
                                    db.disconnect(conn);
                                }
                            );
                        }
                    }
                );
            } else {
                res.status(401);
                res.json({
                    message: "Unauthorized",
                });
            }
        });
    }
});

router.get("/subscribe", (req, res) => {
    if (!req.query.email) {
        res.status(400);
        res.json({
            message: "Bad Request",
        });
    } else {
        const conn = db.connect();
        conn.execute(
            "SELECT * FROM `subscribe` WHERE `email` = ?",
            [req.query.email],
            function (err, results) {
                if (!results[0]) {
                    let data = {
                        email: req.query.email,
                        type: "email"
                    };
                    conn.query(
                        "INSERT INTO subscribe SET ?",
                        data,
                        function (err, resp) {
                            if (err) {
                                res.status(400);
                                res.json({
                                    message: "Bad Request",
                                });
                            } else {
                                res.status(201);
                                res.json({
                                    message: "Success",
                                });
                            }
                            db.disconnect(conn);
                        }
                    );
                } else {
                    res.status(200);
                    res.json({
                        message: "Success",
                    });
                }
            }
        );
    }
});


module.exports = router;