"use strict";

const router = require("../router.js");
const api = require("../api.js");
const uri = require("../util/uri.js");
const User = require("../models/user.js");
const topNavigation = require("../models/top_navigation.js");
const RegistrationView = require("../views/registration_view.js");
const EmptyView = require("../views/empty_view.js");

class UserRegistrationController {
    constructor() {
        if (!api.hasPrivilege("users:create:self")) {
            this._view = new EmptyView();
            this._view.showError("Registration is closed.");
            return;
        }

        topNavigation.activate("register");
        topNavigation.setTitle("Registration");
        this._view = new RegistrationView();
        this._view.addEventListener("submit", (e) => this._evtRegister(e));
    }

    _evtRegister(e) {
        this._view.clearMessages();
        this._view.disableForm();
        const user = new User();
        user.name = e.detail.name;
        user.email = e.detail.email;
        user.password = e.detail.password;
        const isLoggedIn = api.isLoggedIn();
        user.save()
            .then(() => {
                if (isLoggedIn) {
                    return Promise.resolve();
                } else {
                    api.forget();
                    return api.login(e.detail.name, e.detail.password, false);
                }
            })
            .then(
                () => {
                    if (isLoggedIn) {
                        const ctx = router.show(uri.formatClientLink("users"));
                        ctx.controller.showSuccess("User added!");
                    } else {
                        const ctx = router.show(uri.formatClientLink());
                        ctx.controller.showSuccess("Welcome aboard!");
                    }
                },
                (error) => {
                    this._view.showError(error.message);
                    this._view.enableForm();
                }
            );
    }
}

module.exports = (router) => {
    router.enter(["register"], (ctx, next) => {
        new UserRegistrationController();
    });
};