class CKEditorPluginManagerTest

class CKEditorPluginManagerTest extends KernelTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'system',
        'user',
        'filter',
        'editor',
        'ckeditor',
    ];
    
    /**
     * The manager for "CKEditor plugin" plugins.
     *
     * @var \Drupal\Component\Plugin\PluginManagerInterface
     */
    protected $manager;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        // Install the Filter module.
        // Create text format, associate CKEditor.
        $filtered_html_format = FilterFormat::create([
            'format' => 'filtered_html',
            'name' => 'Filtered HTML',
            'weight' => 0,
            'filters' => [],
        ]);
        $filtered_html_format->save();
        $editor = Editor::create([
            'format' => 'filtered_html',
            'editor' => 'ckeditor',
        ]);
        $editor->save();
    }
    
    /**
     * Tests the enabling of plugins.
     */
    public function testEnabledPlugins() {
        $this->manager = $this->container
            ->get('plugin.manager.ckeditor.plugin');
        $editor = Editor::load('filtered_html');
        // Case 1: no CKEditor plugins.
        $definitions = array_keys($this->manager
            ->getDefinitions());
        sort($definitions);
        $this->assertSame([
            'drupalimage',
            'drupalimagecaption',
            'drupallink',
            'internal',
            'language',
            'stylescombo',
        ], $definitions, 'No CKEditor plugins found besides the built-in ones.');
        $enabled_plugins = [
            'drupalimage' => $this->getModulePath('ckeditor') . '/js/plugins/drupalimage/plugin.js',
            'drupallink' => $this->getModulePath('ckeditor') . '/js/plugins/drupallink/plugin.js',
        ];
        $this->assertSame($enabled_plugins, $this->manager
            ->getEnabledPluginFiles($editor), 'Only built-in plugins are enabled.');
        $this->assertSame([
            'internal' => NULL,
        ] + $enabled_plugins, $this->manager
            ->getEnabledPluginFiles($editor, TRUE), 'Only the "internal" plugin is enabled.');
        // Enable the CKEditor Test module, which has the Llama plugin (plus four
        // variations of it, to cover all possible ways a plugin can be enabled) and
        // clear the editor manager's cache so it is picked up.
        $this->enableModules([
            'ckeditor_test',
        ]);
        $this->manager = $this->container
            ->get('plugin.manager.ckeditor.plugin');
        $this->manager
            ->clearCachedDefinitions();
        // Case 2: CKEditor plugins are available.
        $plugin_ids = array_keys($this->manager
            ->getDefinitions());
        sort($plugin_ids);
        $this->assertSame([
            'drupalimage',
            'drupalimagecaption',
            'drupallink',
            'internal',
            'language',
            'llama',
            'llama_button',
            'llama_contextual',
            'llama_contextual_and_button',
            'llama_css',
            'stylescombo',
        ], $plugin_ids, 'Additional CKEditor plugins found.');
        $this->assertSame($enabled_plugins, $this->manager
            ->getEnabledPluginFiles($editor), 'Only the internal plugins are enabled.');
        $this->assertSame([
            'internal' => NULL,
        ] + $enabled_plugins, $this->manager
            ->getEnabledPluginFiles($editor, TRUE), 'Only the "internal" plugin is enabled.');
        // Case 3: enable each of the newly available plugins, if possible:
        // 1. Llama: cannot be enabled, since it does not implement
        //    CKEditorPluginContextualInterface nor CKEditorPluginButtonsInterface.
        // 2. LlamaContextual: enabled by adding the 'Strike' button, which is
        //    part of another plugin!
        // 3. LlamaButton: automatically enabled by adding its 'Llama' button.
        // 4. LlamaContextualAndButton: enabled by either 2 or 3.
        // 5. LlamaCSS: automatically enabled by add its 'LlamaCSS' button.
        // Below, we will first enable the "Llama" button, which will cause the
        // LlamaButton and LlamaContextualAndButton plugins to be enabled. Then we
        // will remove the "Llama" button and add the "Strike" button, which will
        // cause the LlamaContextual and LlamaContextualAndButton plugins to be
        // enabled. Then we will add the "Strike" button back again, which would
        // cause LlamaButton, LlamaContextual and LlamaContextualAndButton to be
        // enabled. Finally, we will add the "LlamaCSS" button which would cause
        // all four plugins to be enabled.
        $settings = $editor->getSettings();
        $original_toolbar = $settings['toolbar'];
        $settings['toolbar']['rows'][0][0]['items'][] = 'Llama';
        $editor->setSettings($settings);
        $editor->save();
        $file = [];
        $file['b'] = $this->getModulePath('ckeditor_test') . '/js/llama_button.js';
        $file['c'] = $this->getModulePath('ckeditor_test') . '/js/llama_contextual.js';
        $file['cb'] = $this->getModulePath('ckeditor_test') . '/js/llama_contextual_and_button.js';
        $file['css'] = $this->getModulePath('ckeditor_test') . '/js/llama_css.js';
        $expected = $enabled_plugins + [
            'llama_button' => $file['b'],
            'llama_contextual_and_button' => $file['cb'],
        ];
        $this->assertSame($expected, $this->manager
            ->getEnabledPluginFiles($editor), 'The LlamaButton and LlamaContextualAndButton plugins are enabled.');
        $this->assertSame([
            'internal' => NULL,
        ] + $expected, $this->manager
            ->getEnabledPluginFiles($editor, TRUE), 'The LlamaButton and LlamaContextualAndButton plugins are enabled.');
        $settings['toolbar'] = $original_toolbar;
        $settings['toolbar']['rows'][0][0]['items'][] = 'Strike';
        $editor->setSettings($settings);
        $editor->save();
        $expected = $enabled_plugins + [
            'llama_contextual' => $file['c'],
            'llama_contextual_and_button' => $file['cb'],
        ];
        $this->assertSame($expected, $this->manager
            ->getEnabledPluginFiles($editor), 'The  LLamaContextual and LlamaContextualAndButton plugins are enabled.');
        $this->assertSame([
            'internal' => NULL,
        ] + $expected, $this->manager
            ->getEnabledPluginFiles($editor, TRUE), 'The LlamaContextual and LlamaContextualAndButton plugins are enabled.');
        $settings['toolbar']['rows'][0][0]['items'][] = 'Llama';
        $editor->setSettings($settings);
        $editor->save();
        $expected = $enabled_plugins + [
            'llama_button' => $file['b'],
            'llama_contextual' => $file['c'],
            'llama_contextual_and_button' => $file['cb'],
        ];
        $this->assertSame($expected, $this->manager
            ->getEnabledPluginFiles($editor), 'The LlamaButton, LlamaContextual and LlamaContextualAndButton plugins are enabled.');
        $this->assertSame([
            'internal' => NULL,
        ] + $expected, $this->manager
            ->getEnabledPluginFiles($editor, TRUE), 'The LLamaButton, LlamaContextual and LlamaContextualAndButton plugins are enabled.');
        $settings['toolbar']['rows'][0][0]['items'][] = 'LlamaCSS';
        $editor->setSettings($settings);
        $editor->save();
        $expected = $enabled_plugins + [
            'llama_button' => $file['b'],
            'llama_contextual' => $file['c'],
            'llama_contextual_and_button' => $file['cb'],
            'llama_css' => $file['css'],
        ];
        $this->assertSame($expected, $this->manager
            ->getEnabledPluginFiles($editor), 'The LlamaButton, LlamaContextual, LlamaContextualAndButton and LlamaCSS plugins are enabled.');
        $this->assertSame([
            'internal' => NULL,
        ] + $expected, $this->manager
            ->getEnabledPluginFiles($editor, TRUE), 'The LLamaButton, LlamaContextual, LlamaContextualAndButton and LlamaCSS plugins are enabled.');
    }
    
    /**
     * Tests the iframe instance CSS files of plugins.
     */
    public function testCssFiles() {
        $this->manager = $this->container
            ->get('plugin.manager.ckeditor.plugin');
        $editor = Editor::load('filtered_html');
        // Case 1: no CKEditor iframe instance CSS file.
        $this->assertSame([], $this->manager
            ->getCssFiles($editor), 'No iframe instance CSS file found.');
        // Enable the CKEditor Test module, which has the LlamaCss plugin and
        // clear the editor manager's cache so it is picked up.
        $this->enableModules([
            'ckeditor_test',
        ]);
        $this->manager = $this->container
            ->get('plugin.manager.ckeditor.plugin');
        $settings = $editor->getSettings();
        // LlamaCss: automatically enabled by adding its 'LlamaCSS' button.
        $settings['toolbar']['rows'][0][0]['items'][] = 'LlamaCSS';
        $editor->setSettings($settings);
        $editor->save();
        // Case 2: CKEditor iframe instance CSS file.
        $expected = [
            'llama_css' => [
                $this->getModulePath('ckeditor_test') . '/css/llama.css',
            ],
        ];
        $this->assertSame($expected, $this->manager
            ->getCssFiles($editor), 'Iframe instance CSS file found.');
    }

}