import { describe, it, expect } from 'vitest';
import { ComponentFixture, TestBed } from '@angular/core/testing';
import { FormControl, FormGroup, ReactiveFormsModule, Validators } from '@angular/forms';
import { TaskForm } from '@app/features/tasks/ui/task-form/task-form';

describe('TaskForm', () => {
  let component: TaskForm;
  let fixture: ComponentFixture<TaskForm>;

  beforeEach(async () => {
    await TestBed.configureTestingModule({
      imports: [TaskForm, ReactiveFormsModule],
    }).compileComponents();

    fixture = TestBed.createComponent(TaskForm);
    component = fixture.componentInstance;

    const form = new FormGroup({
      title: new FormControl('Test Task', [Validators.required]),
      description: new FormControl('Test Description'),
      dueDate: new FormControl('2026-12-01'),
    });

    fixture.componentRef.setInput('form', form);
    fixture.detectChanges();
  });

  it('should create', () => {
    expect(component).toBeTruthy();
  });

  it('should have default submit label', () => {
    expect(component.submitLabel()).toBe('Save');
  });

  it('should have isEditing false by default', () => {
    expect(component.isEditing()).toBe(false);
  });

  it('should have loading false by default', () => {
    expect(component.loading()).toBe(false);
  });

  it('should emit submitted with form values when form is valid', () => {
    const spy = vi.fn();
    component.submitted.subscribe(spy);

    component.onSubmit();

    expect(spy).toHaveBeenCalledWith({
      title: 'Test Task',
      description: 'Test Description',
      dueDate: '2026-12-01',
    });
  });

  it('should not emit submitted when form is invalid', () => {
    const spy = vi.fn();
    component.submitted.subscribe(spy);

    const form = new FormGroup({
      title: new FormControl('', [Validators.required]),
    });
    fixture.componentRef.setInput('form', form);
    fixture.detectChanges();

    component.onSubmit();

    expect(spy).not.toHaveBeenCalled();
  });

  it('should emit cancelled on cancel', () => {
    const spy = vi.fn();
    component.cancelled.subscribe(spy);

    component.onCancel();

    expect(spy).toHaveBeenCalledOnce();
  });
});