Escudo Anti-Spoilers
Authorization.js
export class Authorization {
checkAuthorization(user, task) {
const isAutorized = task.users.some((task_user) => task_user == user);
if (isAutorized) {
return true;
}
throw new Error("No autorizado");
}
}
TaskBuilder.js (Version que a mi parecer deberia ser)
A mi parecer para ingresar los campos de deadline y priority se debe hacer uso de una instancia TaskDecorator, ya que por defecto la instancia Task está preparada para recibir solamente el id y description mientras que con TaskDecorator añade más funcionalidades (Justamente la funcion de este sistema de diseño)
import { Task } from "./exercise";
import { TaskDecorator } from "./TaskDecorator";
export class TaskBuilder {
constructor() {
this.id = undefined;
this.description = undefined;
this.completed = undefined;
this.users = undefined;
this.deadline = undefined;
this.priority = undefined;
}
setId(id) {
this.id = id;
}
setDescription(description) {
this.description = description;
}
setCompleted(completed) {
this.completed = completed;
}
setUsers(users) {
this.users = users;
}
setDeadline(deadline) {
this.deadline = deadline;
}
setPriority(priority) {
this.priority = priority;
}
build() {
const task = new Task(this.id, this.description);
this.users.forEach((user) => task.assignUser(user));
if (this.deadline && this.priority) {
const taskDecorator = new TaskDecorator(task, {
deadline: this.deadline,
priority: this.priority,
});
return taskDecorator;
}
}
}
TaskBuilder.js (Con la que apruebas el playground)
Aqui simplemente agrega atributos que no estan presentes en una instancia de Task
import { Task } from "./exercise";
export class TaskBuilder {
constructor() {
this.id = undefined;
this.description = undefined;
this.completed = undefined;
this.users = undefined;
this.deadline = undefined;
this.priority = undefined;
}
setId(id) {
this.id = id;
}
setDescription(description) {
this.description = description;
}
setCompleted(completed) {
this.completed = completed;
}
setUsers(users) {
this.users = users;
}
setDeadline(deadline) {
this.deadline = deadline;
}
setPriority(priority) {
this.priority = priority;
}
build() {
const task = new Task(this.id, this.description);
this.users.forEach((user) => task.assignUser(user));
task.deadline = this.deadline
task.priority = this.priority
return task;
}
}
TaskDecorator.js
export class TaskDecorator {
constructor(task, options) {
this.task = task;
this.priority = "";
this.deadline = "";
this.checkDeadlineFormat(options.deadline);
this.checkPriority(options.priority);
}
checkDeadlineFormat(deadline) {
const regex = /\d{4}-\d{2}-\d{2}/;
const isValidFormat = regex.test(deadline);
if (isValidFormat) {
this.deadline = deadline;
} else {
this.deadline = "2023-04-19";
}
}
checkPriority(priority) {
const options = ["high", "medium", "low", "alta", "media", "baja"];
const isValidPriority = options.some(
(option) => option == priority.toLowerCase()
);
if (isValidPriority) {
this.priority = priority.toLowerCase();
} else {
this.priority = "baja";
}
}
assignUser(user) {
if (user instanceof User) {
this.task.assignUser(user);
} else {
throw new Error("Debe pasar como parametro una instancia de User");
}
}
completeTask() {
this.task.completeTask();
}
notifyUsers() {
this.task.notifyUsers();
}
}
TaskManager.js
import { Task } from "./exercise";
export class TaskManager {
constructor() {
this.tasks = [];
}
static getInstance() {
if (!TaskManager.instance) {
TaskManager.instance = new TaskManager();
}
return TaskManager.instance;
}
addTask(task) {
if (task instanceof Task) {
this.tasks.push(task);
} else {
throw new Error("Debe pasar como parámetro una instancia de tarea");
}
}
getTasks() {
return this.tasks;
}
getTaskById(id) {
const task = this.tasks.find((task) => task.id == id);
return task ? task : null;
}
}
export class User {
constructor(name) {
this.name = name;
}
notify(task) {
return `La tarea ${task.id} fue completada`;
}
}
exercise.js
import { User } from "./User"
export class Task {
constructor(id, description) {
this.id = id;
this.description = description;
this.completed = false;
this.users = [];
}
assignUser(user) {
if (user instanceof User) {
this.users.push(user);
} else {
throw new Error("Debe pasar como parametro una instancia de User");
}
}
completeTask() {
this.completed = true;
this.notifyUsers();
}
notifyUsers() {
this.users.forEach((user) => user.notify(this));
}
}
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