class AddComponentTest

class AddComponentTest extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'layout_discovery',
        'layout_builder',
        'layout_builder_defaults_test',
        'entity_test',
        'field',
        'system',
        'user',
    ];
    
    /**
     * The plugin.
     */
    private readonly DefaultsSectionStorage $plugin;
    
    /**
     * The config action manager.
     */
    private readonly ConfigActionManager $configActionManager;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        EntityTestHelper::createBundle('bundle_with_extra_fields');
        $this->installEntitySchema('entity_test');
        $this->installEntitySchema('user');
        $this->installConfig([
            'layout_builder_defaults_test',
        ]);
        $this->plugin = $this->container
            ->get(SectionStorageManagerInterface::class)
            ->createInstance('defaults');
        $this->configActionManager = $this->container
            ->get('plugin.manager.config_action');
        // Add some extra empty sections.
        $view_display = $this->container
            ->get(EntityTypeManagerInterface::class)
            ->getStorage('entity_view_display')
            ->load('entity_test.bundle_with_extra_fields.default');
        assert($view_display instanceof SectionListInterface);
        $view_display->insertSection(1, new Section('layout_onecol'));
        $view_display->insertSection(2, new Section('layout_threecol_25_50_25'));
        $view_display->save();
    }
    
    /**
     * Tests adding a component to a view display using a config action.
     *
     * @dataProvider provider
     */
    public function testAddComponent(array $config_action_value, string $expected_region, int $added_component_expected_weight, int $existing_component_expected_weight, ?array $expected_error = NULL) : void {
        if ($expected_error !== NULL) {
            $this->expectException($expected_error[0]);
            $this->expectExceptionMessage($expected_error[1]);
        }
        $this->configActionManager
            ->applyAction('addComponentToLayout', 'core.entity_view_display.entity_test.bundle_with_extra_fields.default', $config_action_value);
        $view_display = $this->container
            ->get(EntityTypeManagerInterface::class)
            ->getStorage('entity_view_display')
            ->load('entity_test.bundle_with_extra_fields.default');
        $this->plugin
            ->setContextValue('display', $view_display);
        $components = $this->plugin
            ->getSection(0)
            ->getComponents();
        $uuid = end($components)->getUuid();
        // If we pass the same existing UUID, we replace it.
        $is_replacing = $added_component_expected_weight === $existing_component_expected_weight;
        $expected_existing_plugin = $is_replacing ? 'my_plugin_id' : 'extra_field_block:entity_test:bundle_with_extra_fields:display_extra_field';
        $this->assertCount($is_replacing ? 1 : 2, $components);
        $this->assertSame($expected_existing_plugin, $components['1445597a-c674-431d-ac0a-277d99347a7f']->getPluginId());
        $this->assertSame('my_plugin_id', $components[$uuid]->getPluginId());
        $this->assertSame($expected_region, $components[$uuid]->getRegion());
        $this->assertSame($added_component_expected_weight, $components[$uuid]->getWeight());
        // Assert weight of the existing component in the layout_twocol_section
        // first region.
        $this->assertSame($existing_component_expected_weight, $components['1445597a-c674-431d-ac0a-277d99347a7f']->getWeight());
        // Assert the component configuration (defined with its config schema), and the
        // additional configuration (ignored in config schema)
        $this->assertSame($config_action_value['component']['configuration'], $components[$uuid]->get('configuration'));
        $this->assertSame($config_action_value['component']['additional'] ?? [], $components[$uuid]->get('additional'));
    }
    
    /**
     * Data provider for testAddComponent.
     */
    public static function provider() : \Generator {
        (yield 'add component at first position of a non-empty region' => [
            [
                'section' => 0,
                'position' => 0,
                'component' => [
                    'region' => [
                        'layout_test_plugin' => 'content',
                        'layout_twocol_section' => 'first',
                    ],
                    'default_region' => 'content',
                    'configuration' => [
                        'id' => 'my_plugin_id',
                    ],
                ],
            ],
            'first',
            1,
            2,
        ]);
        (yield 'edit existing component by giving the same uuid' => [
            [
                'section' => 0,
                'position' => 0,
                'component' => [
                    'uuid' => '1445597a-c674-431d-ac0a-277d99347a7f',
                    'region' => [
                        'layout_test_plugin' => 'content',
                        'layout_twocol_section' => 'first',
                    ],
                    'default_region' => 'content',
                    'configuration' => [
                        'id' => 'my_plugin_id',
                    ],
                ],
            ],
            'first',
            1,
            1,
        ]);
        (yield 'add component at second position of a non-empty region' => [
            [
                'section' => 0,
                'position' => 1,
                'component' => [
                    'region' => [
                        'layout_test_plugin' => 'content',
                        'layout_twocol_section' => 'first',
                    ],
                    'default_region' => 'content',
                    'configuration' => [
                        'id' => 'my_plugin_id',
                        'some_configuration' => 'my_configuration_value',
                    ],
                    'additional' => [
                        'some_additional_value' => 'my_custom_value',
                    ],
                ],
            ],
            'first',
            2,
            1,
        ]);
        (yield 'add component at a position larger than the region size on an empty region' => [
            [
                'section' => 0,
                'position' => 4,
                'component' => [
                    'region' => [
                        'layout_test_plugin' => 'content',
                        'layout_twocol_section' => 'second',
                    ],
                    'default_region' => 'content',
                    'configuration' => [
                        'id' => 'my_plugin_id',
                        'some_configuration' => 'my_configuration_value',
                    ],
                    'additional' => [
                        'some_additional_value' => 'my_custom_value',
                    ],
                ],
            ],
            'second',
            // As there is no other block in that section's region, weight is 0 no matter
            // of the 4th position we asked for.
0,
            1,
        ]);
        (yield 'add component at a region not defined in the mapping' => [
            [
                'section' => 0,
                'position' => 4,
                'component' => [
                    'region' => [
                        'layout_test_plugin' => 'content',
                    ],
                    'default_region' => 'second',
                    'configuration' => [
                        'id' => 'my_plugin_id',
                    ],
                ],
            ],
            // Assigned to the default region, as no mapping matched.
'second',
            0,
            1,
        ]);
        (yield 'add component at a region defined in the mapping while no default region exist' => [
            [
                'section' => 0,
                'position' => 4,
                'component' => [
                    'region' => [
                        'layout_twocol_section' => 'second',
                    ],
                    'configuration' => [
                        'id' => 'my_plugin_id',
                    ],
                ],
            ],
            // Assigned to the matching region, even if no default_region.
'second',
            0,
            1,
        ]);
        (yield 'add component with only default_region and no region mapping' => [
            [
                'section' => 0,
                'position' => 4,
                'component' => [
                    'default_region' => 'second',
                    'configuration' => [
                        'id' => 'my_plugin_id',
                    ],
                ],
            ],
            // Assigned to the default region, even with no mapping.
'second',
            0,
            1,
        ]);
        (yield 'exception when cannot determine a region with mapping and default' => [
            [
                'section' => 0,
                'position' => 4,
                'component' => [
                    'region' => [
                        'layout_test_plugin' => 'content',
                    ],
                    'configuration' => [
                        'id' => 'my_plugin_id',
                    ],
                ],
            ],
            'second',
            0,
            1,
            // No default_region, no matching region, so we error.
[
                ConfigActionException::class,
                'Cannot determine which region of the section to place this component into, because no default region was provided.',
            ],
            (yield 'exception when no region given' => [
                [
                    'section' => 0,
                    'position' => 4,
                    'component' => [
                        'configuration' => [
                            'id' => 'my_plugin_id',
                        ],
                    ],
                ],
                'second',
                0,
                1,
                // No default_region, no matching region, so we error.
[
                    ConfigActionException::class,
                    'Cannot determine which region of the section to place this component into, because no region was provided.',
                ],
            ]),
            (yield 'exception when no configuration given' => [
                [
                    'section' => 0,
                    'position' => 4,
                    'component' => [
                        'region' => [
                            'layout_test_plugin' => 'content',
                        ],
                        'default_region' => 'content',
                    ],
                ],
                'second',
                0,
                1,
                // No component configuration.
[
                    ConfigActionException::class,
                    'Cannot determine the component configuration, or misses a plugin ID.',
                ],
            ]),
            (yield 'exception when no id in configuration is given' => [
                [
                    'section' => 0,
                    'position' => 4,
                    'component' => [
                        'region' => [
                            'layout_test_plugin' => 'content',
                        ],
                        'default_region' => 'content',
                        'configuration' => [
                            'no_id' => 'my_plugin_id',
                        ],
                    ],
                ],
                'second',
                0,
                1,
                // No component configuration id.
[
                    ConfigActionException::class,
                    'Cannot determine the component configuration, or misses a plugin ID.',
                ],
            ]),
        ]);
    }
    
    /**
     * Tests that adding a component to another section works as expected.
     */
    public function testAddComponentToEmptyRegionThatIsNotFirst() : void {
        $this->configActionManager
            ->applyAction('addComponentToLayout', 'core.entity_view_display.entity_test.bundle_with_extra_fields.default', [
            'section' => 2,
            'position' => 4,
            'component' => [
                'region' => [
                    'layout_twocol_section' => 'second',
                    'layout_threecol_25_50_25' => 'bottom',
                ],
                'default_region' => 'content',
                'configuration' => [
                    'id' => 'my_plugin_id',
                ],
            ],
        ]);
        $view_display = $this->container
            ->get(EntityTypeManagerInterface::class)
            ->getStorage('entity_view_display')
            ->load('entity_test.bundle_with_extra_fields.default');
        $this->plugin
            ->setContextValue('display', $view_display);
        $this->assertCount(1, $this->plugin
            ->getSection(0)
            ->getComponents());
        $this->assertCount(0, $this->plugin
            ->getSection(1)
            ->getComponents());
        $this->assertCount(1, $this->plugin
            ->getSection(2)
            ->getComponents());
        $components = $this->plugin
            ->getSection(2)
            ->getComponents();
        $uuid = end($components)->getUuid();
        $this->assertSame('bottom', $components[$uuid]->getRegion());
        $this->assertSame(0, $components[$uuid]->getWeight());
        $this->assertSame([
            'id' => 'my_plugin_id',
        ], $components[$uuid]->get('configuration'));
    }
    
    /**
     * Tests that applying the config action to a missing entity fails.
     */
    public function testActionFailsIfEntityNotFound() : void {
        $this->expectException(ConfigActionException::class);
        $this->expectExceptionMessage('No entity found for applying the addComponentToLayout action.');
        $this->configActionManager
            ->applyAction('addComponentToLayout', 'core.entity_view_display.entity_test.bundle_with_extra_fields.missing_view_mode', [
            'section' => 0,
            'position' => 4,
            'component' => [
                'default_region' => 'content',
                'configuration' => [
                    'id' => 'my_plugin_id',
                ],
            ],
        ]);
    }

}