const asyncHandler = require("../middlewares/asyncHandler");
const User = require("../models/User");
const ErrorResponse = require("../util/errorResponse");
const { sign } = require("../util/jwt");

module.exports.createUser = asyncHandler(async (req, res, next) => {
    const { email, password, username, firstname, lastname } = req.body.user;

    fieldValidation(email, next);
    fieldValidation(password, next);
    fieldValidation(username, next);
    fieldValidation(firstname, next);
    fieldValidation(lastname, next);

    const user = await User.create({
        email: email,
        password: password,
        username: username,
        firstname: firstname,
        lastname: lastname,
    });

    if (user.dataValues.password) {
        delete user.dataValues.password;
    }

    user.dataValues.token = await sign(user);

    user.dataValues.bio = null;
    user.dataValues.image = null;

    res.status(201).json({ user });
});

module.exports.loginUser = asyncHandler(async (req, res, next) => {
    const { email, password } = req.body.user;

    fieldValidation(email, next);
    fieldValidation(password, next);

    const user = await User.findOne({
        where: {
            email: email,
        },
    });

    if (!user) {
        return next(new ErrorResponse(`User not found`, 404));
    }

    const isMatch = user.matchPassword(password);

    if (!isMatch) {
        return next(new ErrorResponse("Wrong password", 401));
    }

    delete user.dataValues.password;

    user.dataValues.token = await sign(user);

    user.dataValues.bio = null;
    user.dataValues.image = null;

    res.status(200).json({ user });
});

module.exports.getCurrentUser = asyncHandler(async (req, res, next) => {
    const { loggedUser } = req;
    const user = await User.findByPk(loggedUser.id);

    if (!user) {
        return next(new ErrorResponse(`User not found`, 404));
    }

    user.dataValues.token = req.headers.authorization.split(" ")[1];

    res.status(200).json({ user });
});

module.exports.updateUser = asyncHandler(async (req, res, next) => {
    await User.update(req.body.user, {
        where: {
            id: req.user.id,
        },
    });

    const user = await User.findByPk(req.user.id);
    user.dataValues.token = req.headers.authorization.split(" ")[1];

    res.status(200).json({ user });
});

const fieldValidation = (field, next) => {
    if (!field) {
        return next(new ErrorResponse(`Missing fields`, 400));
    }
};