let express = require("express");
let router = express.Router();
let models = require("../models");
let error = require("./utils/error");


router.get("/",  async (req, res) => {
    if (req.session.user)
        res.redirect("/");
    else
        res.render("register", {title: "SOD - register", departments: await models.Department.findAll()});
})
    .post("/", async (req, res) => {
        if (!req.body.username || !req.body.email || !req.body.firstName || !req.body.lastName ||
            !req.body.department || !req.body.password)
            return error(req, res, "", 400, "Missing args");

        if (await models.User.findByPk(req.body.username))
            return error(req, res, "Invalid register !", 400, "Username already taken");

        if (await models.User.findOne({where: {firstName: req.body.firstName,
                lastName: req.body.lastName}}))
            return error(req, res, "Invalid register !", 400, "First & last name already register");

        if (await models.User.findOne({where: {email: req.body.email}}))
            return error(req, res, "Invalid register !", 400, "Email already used");

        let department = await models.Department.findByPk(req.body.department);
        if (!department)
            return error(req, res, "Invalid register !", 400, "Invalid department");

        try {
            let user = await models.User.create({
                username: req.body.username,
                email: req.body.email,
                firstName: req.body.firstName,
                lastName: req.body.lastName,
                passwordHash: req.body.password
            });

            await user.setDepartment(department);
            req.session.user = user;
            res.redirect("/");
            for (let c of await models.Order.findAll({where: {
                    firstName: user.firstName,
                    lastName: user.lastName,
                    UserUsername: null
                }}))
                await c.setUser(user);
        } catch (e) {
            error(req, res, "Registration fail !");
            throw e;
        }
    });

module.exports = router;