import { describe, it, expect, vi, afterEach } from 'vitest';
import { createTask } from '@app/features/tasks/data-access/models/task.model';

describe('task.model', () => {
  afterEach(() => {
    vi.useRealTimers();
  });

  describe('createTask', () => {
    it('should create task with all provided values', () => {
      vi.useFakeTimers();
      vi.setSystemTime(new Date('2026-05-13'));
      const dto = { title: 'My Task', description: 'My description', dueDate: '2026-12-01' };

      const task = createTask(dto);

      expect(task.title).toBe('My Task');
      expect(task.description).toBe('My description');
      expect(task.dueDate).toBe('2026-12-01');
      expect(task.stateHistory).toEqual([{ state: 'new', date: '2026-05-13' }]);
      expect(task.notes).toEqual([]);
      expect(task.id).toBeDefined();
    });

    it('should create task with default values when optional fields are missing', () => {
      vi.useFakeTimers();
      vi.setSystemTime(new Date('2026-05-13'));
      const dto = { title: 'Minimal Task' };

      const task = createTask(dto);

      expect(task.title).toBe('Minimal Task');
      expect(task.description).toBe('');
      expect(task.dueDate).toBe('2026-05-13');
    });

    it('should generate unique ids for different tasks', () => {
      const dto = { title: 'Task' };

      const task1 = createTask(dto);
      const task2 = createTask(dto);

      expect(task1.id).not.toBe(task2.id);
    });
  });
});