class SettingsForm

class SettingsForm extends ConfigFormBase {
    use AdvaggSettersTrait;
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container) {
        
        /**
         * @var \Drupal\advagg_mod\Form\SettingsForm
         */
        $instance = parent::create($container);
        $instance->setCache($container->get('cache.advagg'));
        $instance->setLanguageManager($container->get('language_manager'));
        $instance->setModuleHandler($container->get('module_handler'));
        return $instance;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getFormId() {
        return 'advagg_mod_settings';
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getEditableConfigNames() {
        return [
            'advagg_mod.settings',
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildForm(array $form, FormStateInterface $form_state) {
        $config = $this->config('advagg_mod.settings');
        $form = [];
        $form['js'] = [
            '#type' => 'details',
            '#title' => $this->t('JS'),
            '#open' => TRUE,
        ];
        $form['js']['js_preprocess'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Enable preprocess on all JS'),
            '#default_value' => $config->get('js_preprocess'),
            '#description' => $this->t('Force all JavaScript to have the preprocess attribute be set to TRUE. All JavaScript files will be aggregated if enabled.'),
        ];
        $form['js']['js_remove_console_log'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Remove console logging from JS files.'),
            '#default_value' => $config->get('js_remove_console_log'),
            '#description' => $this->t('Harmless under most cases, but may make debugging difficult. WARNING: experimental.'),
        ];
        // Optimize JavaScript Ordering.
        $form['js']['adjust_sort'] = [
            '#type' => 'details',
            '#open' => TRUE,
            '#title' => $this->t('Optimize JavaScript Ordering'),
            '#description' => $this->t('The settings in here might change the order in which the JavaScript is loaded. It will move the scripts around so that more optimal aggregates are built. In most cases enabling these checkboxes will cause no negative side effects.'),
        ];
        $form['js']['adjust_sort']['js_adjust_sort_external'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Move all external scripts to the top of the execution order'),
            '#default_value' => $config->get('js_adjust_sort_external'),
            '#description' => $this->t('This will group all external JavaScript files to be above all other JavaScript.'),
        ];
        $form['js']['adjust_sort']['js_adjust_sort_browsers'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Move all browser conditional JavaScript to the bottom of the group'),
            '#default_value' => $config->get('js_adjust_sort_browsers'),
            '#description' => $this->t('This will group all browser conditional JavaScript to be in the lowest group of that conditional rule.'),
        ];
        // Adjust javascript location and execution.
        $form['js']['placement'] = [
            '#type' => 'details',
            '#open' => TRUE,
            '#title' => $this->t('Adjust javascript location and execution'),
            '#description' => $this->t('Most of the time adjusting the settings are safe but in some rare cases adjusting these can cause serious JavaScript issues with your site.'),
        ];
        $form['js']['placement']['js_defer'] = [
            '#type' => 'radios',
            '#title' => $this->t('Deferred JavaScript Execution: Add The defer Tag To All Script Tags'),
            '#default_value' => $config->get('js_defer'),
            '#options' => [
                0 => $this->t('Disabled'),
                2 => $this->t('All but external scripts'),
                1 => $this->t('All (might break things)'),
            ],
            '#description' => $this->t('This will delay the script execution until the HTML parser has finished. This will have a similar effect to moving all JavaScript to the footer. This might break javascript (especially inline); only use after extensive testing! <a href="@link">More Info</a>', [
                '@link' => 'http://peter.sh/experiments/asynchronous-and-deferred-javascript-execution-explained/',
            ]),
        ];
        $form['js']['placement']['expert'] = [
            '#type' => 'details',
            '#title' => $this->t('Experimental Settings'),
            '#open' => $config->get('js_async'),
        ];
        $form['js']['placement']['expert']['js_async'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Here there be dragons! Asynchronous JavaScript Execution: Add The async Tag To All Script Tags'),
            '#default_value' => $config->get('js_async'),
            '#description' => $this->t('This will cause the script to be downloaded in the background and executed out of order. This will break most javascript as most code is not async safe; only use after extensive testing! <a href="@link">More Info</a>', [
                '@link' => 'http://peter.sh/experiments/asynchronous-and-deferred-javascript-execution-explained/',
            ]),
        ];
        $form['js']['placement']['expert']['js_async_in_header'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Asynchronous JavaScript Execution: Group together in the header'),
            '#default_value' => $config->get('js_async_in_header'),
            '#description' => $this->t('This will move all async JavaScript code to the header in the same group.'),
        ];
        $form['css'] = [
            '#type' => 'details',
            '#title' => $this->t('CSS'),
            '#open' => TRUE,
        ];
        $form['css']['css_preprocess'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Enable preprocess on all CSS'),
            '#default_value' => $config->get('css_preprocess'),
            '#description' => $this->t('Force all CSS to have the preprocess attribute be set to TRUE. All CSS files will be aggregated if enabled.'),
        ];
        $form['css']['css_preprocess']['#description'] .= $this->moduleHandler
            ->moduleExists('advagg_bundler') ? ' ' . $this->t('You might want to increase the <a href="@link">CSS Bundles Per Page</a> if this is checked.', [
            '@link' => Url::fromRoute('advagg_bundler.settings')->toString(),
        ]) : '';
        // Only test the translate option if
        // the locale function is defined OR
        // the locale_custom_strings variable is not empty.
        $lang = isset($this->languageManager
            ->getCurrentLanguage()->language) ? $this->languageManager
            ->getCurrentLanguage()->language : 'en';
        $locale_custom_strings = Settings::get('locale_custom_strings_' . $lang, []);
        if (function_exists('locale') || !empty($locale_custom_strings)) {
            $form['css']['css_translate'] = [
                '#type' => 'checkbox',
                '#title' => $this->t('Translate CSS content strings'),
                '#default_value' => $config->get('css_translate'),
                '#description' => $this->t('Run strings inside of quotes of the content attribute through the <a href="@t">t() function</a>. An alternative to this can be found in this <a href="@post">blog post</a>.', [
                    '@t' => 'https://api.drupal.org/api/drupal/includes!bootstrap.inc/function/t/7',
                    '@post' => 'http://fourkitchens.com/blog/2013/08/15/multilingual-css-generated-content-drupal',
                ]),
            ];
        }
        // Optimize CSS Ordering.
        $form['css']['adjust_sort'] = [
            '#type' => 'details',
            '#open' => TRUE,
            '#title' => $this->t('Optimize CSS Ordering'),
            '#description' => $this->t('The settings in here might change the order in which the CSS is loaded. It will move the CSS around so that more optimal aggregates are built. In most cases enabling these checkboxes will cause no negative side effects.'),
        ];
        $form['css']['adjust_sort']['css_adjust_sort_external'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Move all external CSS to the top of the execution order'),
            '#default_value' => $config->get('css_adjust_sort_external'),
            '#description' => $this->t('This will group all external CSS files to be above all other CSS.'),
        ];
        $form['css']['adjust_sort']['css_adjust_sort_browsers'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Move all browser conditional CSS to the bottom of the group'),
            '#default_value' => $config->get('css_adjust_sort_browsers'),
            '#description' => $this->t('This will group all browser conditional CSS to be in the lowest group of that conditional rule.'),
        ];
        // Adjust CSS location and execution.
        $form['css']['placement'] = [
            '#type' => 'details',
            '#title' => $this->t('Adjust CSS location and execution (Experimental)'),
            '#open' => $config->get('css_defer'),
        ];
        $form['css']['placement']['css_defer'] = [
            '#type' => 'radios',
            '#title' => $this->t('Deferred CSS Execution: Use JS to load CSS'),
            '#default_value' => $config->get('css_defer'),
            '#options' => [
                0 => $this->t('Disabled'),
                1 => $this->t('Enabled (In head)'),
            ],
            '#description' => $this->t('This will try to optimize CSS delivery by using JavaScript to load the CSS. This might break CSS on different browsers and will cause a flash of unstyled content (FOUC). Only enable after extensive testing! <a href="@link">More Info</a>', [
                '@link' => 'http://stackoverflow.com/questions/19374843/css-delivery-optimization-how-to-defer-css-loading',
            ]),
        ];
        $form['css']['placement']['css_defer_admin'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Use JS to load CSS in the admin theme'),
            '#default_value' => $config->get('css_defer_admin'),
            '#description' => $this->t('This will optimize CSS delivery with JavaScript when viewing the admin theme.'),
            '#states' => [
                'disabled' => [
                    ':input[name="css_defer"]' => [
                        'value' => '0',
                    ],
                ],
            ],
        ];
        $form['css']['placement']['css_defer_external'] = [
            '#type' => 'checkbox',
            '#title' => $this->t('Use JS to load external CSS'),
            '#default_value' => $config->get('css_defer_external'),
            '#description' => $this->t('This will optimize CSS delivery with JavaScript for external stylesheets.'),
            '#states' => [
                'disabled' => [
                    ':input[name="css_defer"]' => [
                        'value' => '0',
                    ],
                ],
            ],
        ];
        $form['css']['placement']['css_defer_js_code'] = [
            '#type' => 'radios',
            '#title' => $this->t('How to include the JS loading code'),
            '#default_value' => $config->get('css_defer_js_code'),
            '#options' => [
                0 => $this->t('Inline javascript loader library (If enabled this is recommended)'),
                2 => $this->t('Local file included in aggregate'),
                4 => $this->t('Externally load the latest from github'),
            ],
            '#description' => $this->t('The <a href="@link">loadCSS</a> library can be included in various ways.', [
                '@link' => 'https://github.com/filamentgroup/loadCSS',
            ]),
            '#states' => [
                'disabled' => [
                    ':input[name="css_defer"]' => [
                        'value' => '0',
                    ],
                ],
            ],
        ];
        return parent::buildForm($form, $form_state);
    }
    
    /**
     * {@inheritdoc}
     */
    public function submitForm(array &$form, FormStateInterface $form_state) {
        
        /** @var \Drupal\Core\Config\Config $config */
        $config = $this->config('advagg_mod.settings');
        $config->set('css_adjust_sort_browsers', $form_state->getValue('css_adjust_sort_browsers'))
            ->set('css_adjust_sort_external', $form_state->getValue('css_adjust_sort_external'))
            ->set('css_defer', $form_state->getValue('css_defer'))
            ->set('css_defer_admin', $form_state->getValue('css_defer_admin'))
            ->set('css_defer_external', $form_state->getValue('css_defer_external'))
            ->set('css_defer_js_code', $form_state->getValue('css_defer_js_code'))
            ->set('css_preprocess', $form_state->getValue('css_preprocess'))
            ->set('css_translate', $form_state->getValue('css_translate'))
            ->set('js_adjust_sort_browsers', $form_state->getValue('js_adjust_sort_browsers'))
            ->set('js_adjust_sort_external', $form_state->getValue('js_adjust_sort_external'))
            ->set('js_async', $form_state->getValue('js_async'))
            ->set('js_async_in_header', $form_state->getValue('js_async_in_header'))
            ->set('js_defer', $form_state->getValue('js_defer'))
            ->set('js_footer', $form_state->getValue('js_footer'))
            ->set('js_preprocess', $form_state->getValue('js_preprocess'))
            ->set('js_remove_console_log', $form_state->getValue('js_remove_console_log'))
            ->set('prefetch', $form_state->getValue('prefetch'))
            ->set('unified_multisite_dir', $form_state->getValue('unified_multisite_dir'))
            ->save();
        // Clear relevant caches.
        Cache::invalidateTags([
            'library_info',
        ]);
        $this->cache
            ->invalidateAll();
        parent::submitForm($form, $form_state);
    }

}