class DatetimeFormElementTest

class DatetimeFormElementTest extends EntityKernelTestBase implements FormInterface {
    use EntityViewTrait;
    
    /**
     * Form builder service.
     *
     * @var \Drupal\Core\Form\FormBuilder
     */
    protected $formBuilder;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'system',
        'datetime',
    ];
    
    /**
     * {@inheritdoc}
     */
    public function setUp() : void {
        parent::setUp();
        $this->installEntitySchema('date_format');
        $this->installConfig([
            'system',
        ]);
        $this->formBuilder = $this->container
            ->get('form_builder');
    }
    
    /**
     * {@inheritdoc}
     */
    public function getFormId() : string {
        return 'datetime_form_element_test';
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildForm(array $form, FormStateInterface $form_state) : array {
        // Test datetime-local element.
        $form['datetime_local_picker'] = [
            '#type' => 'datetime',
            '#date_date_element' => 'datetime-local',
            '#date_time_element' => 'none',
        ];
        $form['submit'] = [
            '#type' => 'submit',
            '#value' => 'Submit',
        ];
        return $form;
    }
    
    /**
     * {@inheritdoc}
     */
    public function submitForm(array &$form, FormStateInterface $form_state) : void {
    }
    
    /**
     * {@inheritdoc}
     */
    public function validateForm(array &$form, FormStateInterface $form_state) : void {
    }
    
    /**
     * Checks we have no errors on form submit.
     *
     * @covers ::validateDatetime
     */
    public function testNoErrorMetOnFormSubmit() : void {
        // No error expected when form elements have no value.
        $form_state = new FormState();
        $this->formBuilder
            ->submitForm($this, $form_state);
        $this->assertEmpty($form_state->getErrors());
        // No error expected when a datetime-local element has a valid value.
        $form_state = new FormState();
        $form_state->setValue('datetime_local_picker', [
            'date' => '2025-02-18T12:00',
        ]);
        $this->formBuilder
            ->submitForm($this, $form_state);
        $this->assertEmpty($form_state->getErrors());
    }
    
    /**
     * Checks expected values are returned by ::valueCallback().
     *
     * Test only applied to 'datetime-local' date element.
     *
     * @covers ::valueCallback
     */
    public function testDatetimeLocalValueCallback() : void {
        $element = [
            '#type' => 'datetime',
            '#date_date_element' => 'datetime-local',
            '#date_time_element' => 'none',
        ];
        $input = [
            'date' => '2025-02-18T12:00',
        ];
        $form_state = new FormState();
        $form_state->setValue('datetime_local_picker', [
            'date' => '2025-02-18T12:00',
        ]);
        $result = Datetime::valueCallback($element, $input, $form_state);
        $this->assertIsArray($result);
        $this->assertArrayHasKey('date', $result);
        $this->assertEquals('2025-02-18', $result['date']);
        $this->assertArrayHasKey('time', $result);
        $this->assertEquals('12:00:00', $result['time']);
        $this->assertArrayHasKey('object', $result);
        $this->assertNotEmpty($result['object']);
        $this->assertInstanceOf(DrupalDateTime::class, $result['object']);
    }
    
    /**
     * Checks expected values are returned by ::processDatetime().
     *
     * Test only applied to 'datetime-local' date element.
     *
     * @covers ::processDatetime
     */
    public function testDatetimeLocalProcessDatetime() : void {
        $form = [
            'datetime_local_picker' => [
                '#type' => 'datetime',
                '#date_date_element' => 'datetime-local',
                '#date_date_format' => 'Y-m-d',
                '#date_time_element' => 'none',
                '#date_time_format' => 'H:i:s',
                '#value' => [
                    'object' => new DrupalDateTime('2025-02-18T12:00'),
                    'date' => '2025-02-18',
                    'time' => '12:00:00',
                ],
                '#date_year_range' => '1900:2050',
                '#attributes' => [],
                '#required' => TRUE,
            ],
            'submit' => [
                '#type' => 'submit',
                '#value' => 'Submit',
            ],
        ];
        $element = $form['datetime_local_picker'];
        $form_state = new FormState();
        $form_state->setValue('datetime_local_picker', [
            'date' => '2025-02-18T12:00',
        ]);
        $result = Datetime::processDatetime($element, $form_state, $form);
        $this->assertIsArray($result);
        $this->assertArrayHasKey('date', $result);
        $this->assertIsArray($result['date']);
        $this->assertArrayHasKey('#error_no_message', $result['date']);
        $this->assertTrue($result['date']['#error_no_message']);
        $this->assertArrayHasKey('#attributes', $result['date']);
        $this->assertArrayHasKey('min', $result['date']['#attributes']);
        $this->assertEquals('1900-01-01T00:00:00', $result['date']['#attributes']['min']);
        $this->assertArrayHasKey('max', $result['date']['#attributes']);
        $this->assertEquals('2050-12-31T23:59:59', $result['date']['#attributes']['max']);
        $this->assertArrayNotHasKey('time', $result);
    }

}