t00-multiuser/server/controller/AccountController.ts

import ChangeUsernameViewModel from "../models/account/ChangeUsernameViewModel";
import LoginViewModel from "../models/account/LoginViewModel";
import RegisterViewModel from "../models/account/RegisterViewModel";
import Session from "../objects/Session";
import UserService from "../services/UserService";
import Controller from "./Controller"

export default class AccountController extends Controller {
	public async Login_Get_AllowAnonymous() {
		return this.view();
	}

	public async Login_Post_AllowAnonymous(loginViewModel: LoginViewModel) {
		if (typeof(loginViewModel.username) !== "string" || typeof(loginViewModel.password) !== "string") {
			return this.badRequest();
		}

		const user = await UserService.AuthenticateUser(loginViewModel.username, loginViewModel.password);
		if (!user) {
			loginViewModel.password = "";
			loginViewModel.message = "Username or Password is incorrect";

			return this.view(loginViewModel);
		}

		Session.AssignUserSession(this.res, user);

		return this.redirectToAction("index", "home");
	}

	public async Register_Get_AllowAnonymous() {
		return this.view();
	}

	public async Register_Post_AllowAnonymous(registerViewModel: RegisterViewModel) {
		if (typeof(registerViewModel.username) !== "string" || typeof(registerViewModel.password) !== "string") {
			return this.badRequest();
		}

		const username = registerViewModel.username.replaceAll("<", "&lt;").replaceAll(">", "&gt;");
		if (!await UserService.CreateUser(0, username, registerViewModel.password)) {
			registerViewModel.password = "";
			registerViewModel.message = "Sorry! That username is already taken.";

			return this.view(registerViewModel);
		}

		const user = await UserService.GetUserByUsername(username);
		if (!user) {
			registerViewModel.password = "";
			registerViewModel.message = "Failed to create your account, please try again later.";

			return this.view(registerViewModel);
		}

		Session.AssignUserSession(this.res, user);

		return this.redirectToAction("index", "home");
	}

	public async Logout_Get_AllowAnonymous() {
		Session.Clear(this.req.cookies, this.res);

		return this.redirectToAction("index", "home");
	}

	public async ChangeUsername_Get(changeUsernameViewModel:ChangeUsernameViewModel) {
		return this.view(changeUsernameViewModel);
	}

	public async ChangeUsername_Post(changeUsernameViewModel:ChangeUsernameViewModel) {
		if (typeof(changeUsernameViewModel.username) !== "string") {
			return this.badRequest();
		}

		const user = await UserService.SaveUsername(this.session.userId, changeUsernameViewModel.username);
		if (!user) {
			changeUsernameViewModel.message = "Sorry! That username is already taken.";
			return this.view(changeUsernameViewModel);	
		}

		return this.redirectToAction("index", "home");
	}
}