مشروع TypeScript تطبيقي

// === 1. نظام التعليقات ===
interface Comment {
  readonly id: string;
  taskId: TaskId;
  authorId: UserId;
  content: string;
  createdAt: Date;
}

// === 2. نظام التصفية المتقدم ===
async function searchTasks(
  criteria: TaskSearchCriteria
): Promise<Task[]> {
  const tasks = await taskRepo.getAll();
  
  return tasks.filter((task) => {
    if (criteria.status && !criteria.status.includes(task.status))
      return false;
    if (criteria.priority && !criteria.priority.includes(task.priority))
      return false;
    if (criteria.assignedTo && task.assignedTo !== criteria.assignedTo)
      return false;
    if (criteria.tags && !criteria.tags.some((t) => task.tags.includes(t)))
      return false;
    if (criteria.query) {
      const q = criteria.query.toLowerCase();
      if (!task.title.toLowerCase().includes(q) &&
          !task.description.toLowerCase().includes(q))
        return false;
    }
    if (criteria.dueBefore && task.dueDate && task.dueDate > criteria.dueBefore)
      return false;
    if (criteria.dueAfter && task.dueDate && task.dueDate < criteria.dueAfter)
      return false;
    return true;
  });
}

// === 3. نظام الترتيب ===
function sortTasks(
  tasks: Task[],
  options: TaskSortOptions
): Task[] {
  return [...tasks].sort((a, b) => {
    const aVal = a[options.field];
    const bVal = b[options.field];
    
    if (aVal < bVal) return options.direction === "asc" ? -1 : 1;
    if (aVal > bVal) return options.direction === "asc" ? 1 : -1;
    return 0;
  });
}

// === 4. إحصائيات الإنتاجية ===
async function getUserProductivity(userId: UserId): Promise<number> {
  const tasks = await taskRepo.getAll();
  const completed = tasks.filter(
    (t) => t.assignedTo === userId && t.status === "done"
  );
  return completed.length;
}

// === 5. نظام الإشعارات ===
type Notification =
  | { type: "email"; to: EmailAddress; subject: string; body: string }
  | { type: "push"; deviceToken: string; title: string; message: string }
  | { type: "in_app"; userId: UserId; message: string; link?: string };

function sendNotification(notification: Notification): void {
  switch (notification.type) {
    case "email":
      console.log(`📧 إرسال بريد إلى ${notification.to}: ${notification.subject}`);
      break;
    case "push":
      console.log(`📱 إشعار push: ${notification.title}`);
      break;
    case "in_app":
      console.log(`🔔 إشعار داخل التطبيق: ${notification.message}`);
      break;
  }
}