Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-content/plugins/imagify/inc/admin/custom-folders.php

@@ -0,0 +1,85 @@
+<?php
+defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
+
+add_filter( 'upgrader_post_install', 'imagify_sync_theme_plugin_files_on_update', IMAGIFY_INT_MAX, 3 );
+/**
+ * Sync files right after a theme or plugin has been updated.
+ *
+ * @since  1.7
+ * @author Grégory Viguier
+ *
+ * @param  bool  $response   Installation response.
+ * @param  array $hook_extra Extra arguments passed to hooked filters.
+ * @param  array $result     Installation result data.
+ * @return bool
+ */
+function imagify_sync_theme_plugin_files_on_update( $response, $hook_extra, $result ) {
+	global $wpdb;
+
+	if ( ( empty( $hook_extra['plugin'] ) && empty( $hook_extra['theme'] ) ) || empty( $result['destination'] ) ) {
+		return $response;
+	}
+
+	$folders_to_sync = get_site_transient( 'imagify_themes_plugins_to_sync' );
+	$folders_to_sync = is_array( $folders_to_sync ) ? $folders_to_sync : array();
+
+	$folders_to_sync[] = $result['destination'];
+
+	set_site_transient( 'imagify_themes_plugins_to_sync', $folders_to_sync, DAY_IN_SECONDS );
+
+	return $response;
+}
+
+add_action( 'admin_init', 'imagify_sync_theme_plugin_files_after_update' );
+/**
+ * Sync files after some themes or plugins have been updated.
+ *
+ * @since  1.7.1.2
+ * @author Grégory Viguier
+ */
+function imagify_sync_theme_plugin_files_after_update() {
+	global $wpdb;
+
+	$folders_to_sync = get_site_transient( 'imagify_themes_plugins_to_sync' );
+
+	if ( ! $folders_to_sync || ! is_array( $folders_to_sync ) ) {
+		return;
+	}
+
+	delete_site_transient( 'imagify_themes_plugins_to_sync' );
+
+	$folders_db = Imagify_Folders_DB::get_instance();
+	$files_db   = Imagify_Files_DB::get_instance();
+
+	if ( ! $folders_db->can_operate() || ! $files_db->can_operate() ) {
+		return;
+	}
+
+	foreach ( $folders_to_sync as $folder_path ) {
+		$folder_path = trailingslashit( $folder_path );
+
+		if ( Imagify_Files_Scan::is_path_forbidden( $folder_path ) ) {
+			// This theme or plugin must not be optimized.
+			continue;
+		}
+
+		// Get the related folder.
+		$placeholder = Imagify_Files_Scan::add_placeholder( $folder_path );
+		$folder      = Imagify_Folders_DB::get_instance()->get_in( 'path', $placeholder );
+
+		if ( ! $folder ) {
+			// This theme or plugin is not in the database.
+			continue;
+		}
+
+		// Sync the folder files.
+		Imagify_Custom_Folders::synchronize_files_from_folders( array(
+			$folder['folder_id'] => array(
+				'folder_id'   => $folder['folder_id'],
+				'path'        => $placeholder,
+				'active'      => $folder['active'],
+				'folder_path' => $folder_path,
+			),
+		) );
+	}
+}

wp/wp-content/plugins/imagify/inc/admin/media.php

@@ -0,0 +1,98 @@
+<?php
+defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
+
+add_filter( 'attachment_fields_to_edit', '_imagify_attachment_fields_to_edit', IMAGIFY_INT_MAX, 2 );
+/**
+ * Add "Imagify" column in the Media Uploader
+ *
+ * @since 1.2
+ * @author Jonathan Buttigieg
+ *
+ * @param  array  $form_fields An array of attachment form fields.
+ * @param  object $post        The WP_Post attachment object.
+ * @return array
+ */
+function _imagify_attachment_fields_to_edit( $form_fields, $post ) {
+	global $pagenow;
+
+	if ( 'post.php' === $pagenow ) {
+		return $form_fields;
+	}
+
+	if ( ! imagify_get_context( 'wp' )->current_user_can( 'manual-optimize', $post->ID ) ) {
+		return $form_fields;
+	}
+
+	$process = imagify_get_optimization_process( $post->ID, 'wp' );
+
+	$form_fields['imagify'] = array(
+		'label'         => 'Imagify',
+		'input'         => 'html',
+		'html'          => get_imagify_media_column_content( $process ),
+		'show_in_edit'  => true,
+		'show_in_modal' => true,
+	);
+
+	return $form_fields;
+}
+
+add_filter( 'media_row_actions', '_imagify_add_actions_to_media_list_row', IMAGIFY_INT_MAX, 2 );
+/**
+ * Add "Compare Original VS Optimized" link to the media row action
+ *
+ * @since  1.4.3
+ * @author Geoffrey Crofte
+ * @param  array  $actions An array of action links for each attachment.
+ *                         Default 'Edit', 'Delete Permanently', 'View'.
+ * @param  object $post    WP_Post object for the current attachment.
+ * @return array
+ */
+function _imagify_add_actions_to_media_list_row( $actions, $post ) {
+	if ( ! imagify_get_context( 'wp' )->current_user_can( 'manual-optimize', $post->ID ) ) {
+		return $actions;
+	}
+
+	$process = imagify_get_optimization_process( $post->ID, 'wp' );
+
+	if ( ! $process->is_valid() ) {
+		return $actions;
+	}
+
+	$media = $process->get_media();
+
+	// If this media is not an image, do nothing.
+	if ( ! $media->is_supported() || ! $media->is_image() ) {
+		return $actions;
+	}
+
+	$data = $process->get_data();
+
+	// If Imagify license not valid, or image is not optimized, do nothing.
+	if ( ! Imagify_Requirements::is_api_key_valid() || ! $data->is_optimized() ) {
+		return $actions;
+	}
+
+	// If no backup, do nothing.
+	if ( ! $media->has_backup() ) {
+		return $actions;
+	}
+
+	$dimensions = $media->get_dimensions();
+
+	// If full image is too small. See get_imagify_localize_script_translations().
+	if ( $dimensions['width'] < 360 ) {
+		return $actions;
+	}
+
+	// Else, add action link for comparison (JS triggered).
+	$actions['imagify-compare'] = Imagify_Views::get_instance()->get_template( 'button/compare-images', [
+		'url'          => get_edit_post_link( $media->get_id() ) . '#imagify-compare',
+		'backup_url'   => $media->get_backup_url(),
+		'original_url' => $media->get_fullsize_url(),
+		'media_id'     => $media->get_id(),
+		'width'        => $dimensions['width'],
+		'height'       => $dimensions['height'],
+	] );
+
+	return $actions;
+}

wp/wp-content/plugins/imagify/inc/admin/meta-boxes.php

@@ -0,0 +1,89 @@
+<?php
+defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
+
+add_action( 'attachment_submitbox_misc_actions', '_imagify_attachment_submitbox_misc_actions', IMAGIFY_INT_MAX );
+/**
+ * Add a "Optimize It" button or the Imagify optimization data in the attachment submit area.
+ *
+ * @since 1.0
+ */
+function _imagify_attachment_submitbox_misc_actions() {
+	global $post;
+
+	if ( ! imagify_get_context( 'wp' )->current_user_can( 'manual-optimize', $post->ID ) ) {
+		return;
+	}
+
+	$process = imagify_get_optimization_process( $post->ID, 'wp' );
+
+	if ( ! $process->is_valid() ) {
+		return;
+	}
+
+	$media = $process->get_media();
+
+	if ( ! $media->is_supported() ) {
+		return;
+	}
+
+	if ( ! $media->has_required_media_data() ) {
+		return;
+	}
+
+	$data  = $process->get_data();
+	$views = Imagify_Views::get_instance();
+
+	if ( ! Imagify_Requirements::is_api_key_valid() && ! $data->is_optimized() ) {
+		?>
+		<div class="misc-pub-section misc-pub-imagify"><h4><?php esc_html_e( 'Imagify', 'imagify' ); ?></h4></div>
+		<div class="misc-pub-section misc-pub-imagify">
+			<?php esc_html_e( 'Invalid API key', 'imagify' ); ?>
+			<br/>
+			<a href="<?php echo esc_url( get_imagify_admin_url() ); ?>">
+				<?php esc_html_e( 'Check your Settings', 'imagify' ); ?>
+			</a>
+		</div>
+		<?php
+	} else {
+		$is_locked = $process->is_locked();
+
+		if ( $is_locked ) {
+			switch ( $is_locked ) {
+				case 'optimizing':
+					$lock_label = __( 'Optimizing...', 'imagify' );
+					break;
+				case 'restoring':
+					$lock_label = __( 'Restoring...', 'imagify' );
+					break;
+				default:
+					$lock_label = __( 'Processing...', 'imagify' );
+			}
+			?>
+			<div class="misc-pub-section misc-pub-imagify">
+				<?php $views->print_template( 'button/processing', [ 'label' => $lock_label ] ); ?>
+			</div>
+			<?php
+		} elseif ( $data->is_optimized() || $data->is_already_optimized() || $data->is_error() ) {
+			?>
+			<div class="misc-pub-section misc-pub-imagify"><h4><?php esc_html_e( 'Imagify', 'imagify' ); ?></h4></div>
+			<div class="misc-pub-section misc-pub-imagify imagify-data-item">
+				<?php echo get_imagify_attachment_optimization_text( $process ); ?>
+			</div>
+			<?php
+		} else {
+			$url = get_imagify_admin_url( 'optimize', array( 'attachment_id' => $post->ID ) );
+			?>
+			<div class="misc-pub-section misc-pub-imagify">
+				<a class="button-primary" href="<?php echo esc_url( $url ); ?>"><?php esc_html_e( 'Optimize', 'imagify' ); ?></a>
+			</div>
+			<?php
+		}
+	}
+
+	if ( $media->has_backup() && $data->is_optimized() ) {
+		?>
+		<input id="imagify-full-original" type="hidden" value="<?php echo esc_url( $media->get_backup_url() ); ?>">
+		<input id="imagify-full-original-size" type="hidden" value="<?php echo esc_attr( $data->get_original_size( true, 0 ) ); ?>">
+		<?php
+	}
+}

wp/wp-content/plugins/imagify/inc/admin/upgrader.php

@@ -0,0 +1,331 @@
+<?php
+defined( 'ABSPATH' ) || die( 'Cheatin&#8217; uh?' );
+
+/**
+ * Tell WP what to do when admin is loaded aka upgrader.
+ *
+ * @since 1.0
+ */
+function _imagify_upgrader() {
+	// Back-compat' with previous version of the upgrader.
+	imagify_upgrader_upgrade();
+
+	// Version stored on the network.
+	$network_version = Imagify_Options::get_instance()->get( 'version' );
+	// Version stored at the site level.
+	$site_version    = Imagify_Data::get_instance()->get( 'version' );
+
+	if ( ! $network_version ) {
+		// First install (network).
+
+		/**
+		 * Triggered on Imagify first install (network).
+		 *
+		 * @since  1.7
+		 * @author Grégory Viguier
+		 */
+		do_action( 'imagify_first_network_install' );
+	} elseif ( IMAGIFY_VERSION !== $network_version ) {
+		// Already installed but got updated (network).
+
+		/**
+		 * Triggered on Imagify upgrade (network).
+		 *
+		 * @since  1.7
+		 * @author Grégory Viguier
+		 *
+		 * @param string $network_version Previous version stored on the network.
+		 * @param string $site_version    Previous version stored on site level.
+		 */
+		do_action( 'imagify_network_upgrade', $network_version, $site_version );
+	}
+
+	// If any upgrade has been done, we flush and update version.
+	if ( did_action( 'imagify_first_network_install' ) || did_action( 'imagify_network_upgrade' ) ) {
+		Imagify_Options::get_instance()->set( 'version', IMAGIFY_VERSION );
+	}
+
+	if ( ! $site_version ) {
+		// First install (site level).
+
+		/**
+		 * Triggered on Imagify first install (site level).
+		 *
+		 * @since 1.0
+		 */
+		do_action( 'imagify_first_install' );
+	} elseif ( IMAGIFY_VERSION !== $site_version ) {
+		// Already installed but got updated (site level).
+
+		/**
+		 * Triggered on Imagify upgrade (site level).
+		 *
+		 * @since 1.0
+		 * @since 1.7 $network_version replaces the "new version" (which can easily be grabbed with the constant).
+		 *
+		 * @param string $network_version Previous version stored on the network.
+		 * @param string $site_version    Previous version stored on site level.
+		 */
+		do_action( 'imagify_upgrade', $network_version, $site_version );
+	}
+
+	// If any upgrade has been done, we flush and update version.
+	if ( did_action( 'imagify_first_install' ) || did_action( 'imagify_upgrade' ) ) {
+		Imagify_Data::get_instance()->set( 'version', IMAGIFY_VERSION );
+	}
+}
+add_action( 'admin_init', '_imagify_upgrader' );
+
+/**
+ * Upgrade the upgrader:
+ * Imagify 1.7 splits "network version" and "site version". Since the "site version" didn't exist before 1.7, we need to provide a version based on the "network version".
+ *
+ * @since  1.7
+ * @author Grégory Viguier
+ */
+function imagify_upgrader_upgrade() {
+	global $wpdb;
+
+	// Version stored on the network.
+	$network_version = Imagify_Options::get_instance()->get( 'version' );
+
+	if ( ! $network_version ) {
+		// Really first install.
+		return;
+	}
+
+	// Version stored at the site level.
+	$site_version = Imagify_Data::get_instance()->get( 'version' );
+
+	if ( $site_version ) {
+		// This site's upgrader is already upgraded.
+		return;
+	}
+
+	if ( ! is_multisite() ) {
+		// Not a multisite, so both versions must have the same value.
+		Imagify_Data::get_instance()->set( 'version', $network_version );
+		return;
+	}
+
+	$sites = get_site_option( 'imagify_old_version' );
+
+	if ( IMAGIFY_VERSION !== $network_version && ! $sites ) {
+		// The network is not up-to-date yet: store the site IDs that must be updated.
+		$network_id = function_exists( 'get_current_network_id' ) ? get_current_network_id() : $wpdb->siteid;
+		$sites      = $wpdb->get_col( $wpdb->prepare( "SELECT blog_id FROM $wpdb->blogs WHERE site_id = %d AND archived = 0 AND deleted = 0", $network_id ) );
+		$sites      = array_map( 'absint', $sites );
+		$sites      = array_filter( $sites );
+
+		if ( ! $sites ) {
+			// Uh?
+			return;
+		}
+
+		// We store the old network version and the site Ids: those sites will need to be upgraded from this version.
+		$sites['version'] = $network_version;
+
+		add_site_option( 'imagify_old_version', $sites );
+	}
+
+	if ( empty( $sites['version'] ) ) {
+		// WTF.
+		delete_site_option( 'imagify_old_version' );
+		return;
+	}
+
+	$network_version = $sites['version'];
+	unset( $sites['version'] );
+
+	$sites   = array_flip( $sites );
+	$site_id = get_current_blog_id();
+
+	if ( ! isset( $sites[ $site_id ] ) ) {
+		// This site is already upgraded.
+		return;
+	}
+
+	unset( $sites[ $site_id ] );
+
+	if ( ! $sites ) {
+		// We're done, all the sites have been upgraded.
+		delete_site_option( 'imagify_old_version' );
+	} else {
+		// Some sites still need to be upgraded.
+		$sites = array_flip( $sites );
+		$sites['version'] = $network_version;
+		update_site_option( 'imagify_old_version', $sites );
+	}
+
+	Imagify_Data::get_instance()->set( 'version', $network_version );
+}
+
+/**
+ * Keeps this function up to date at each version.
+ *
+ * @since 1.0
+ */
+function _imagify_first_install() {
+	// Set a transient to know when we will have to display a notice to ask the user to rate the plugin.
+	set_site_transient( 'imagify_seen_rating_notice', true, DAY_IN_SECONDS * 3 );
+}
+add_action( 'imagify_first_network_install', '_imagify_first_install' );
+
+/**
+ * What to do when Imagify is updated, depending on versions.
+ *
+ * @since 1.0
+ * @since 1.7 $network_version replaces the "new version" (which can easily be grabbed with the constant).
+ *
+ * @param string $network_version Previous version stored on the network.
+ * @param string $site_version    Previous version stored on site level.
+ */
+function _imagify_new_upgrade( $network_version, $site_version ) {
+	global $wpdb;
+
+	$options = Imagify_Options::get_instance();
+
+	// 1.2
+	if ( version_compare( $site_version, '1.2' ) < 0 ) {
+		// Update all already optimized images status from 'error' to 'already_optimized'.
+		$query = new WP_Query( array(
+			'is_imagify'             => true,
+			'post_type'              => 'attachment',
+			'post_status'            => imagify_get_post_statuses(),
+			'post_mime_type'         => imagify_get_mime_types(),
+			'meta_key'               => '_imagify_status',
+			'meta_value'             => 'error',
+			'posts_per_page'         => -1,
+			'update_post_term_cache' => false,
+			'no_found_rows'          => true,
+			'fields'                 => 'ids',
+		) );
+
+		if ( $query->posts ) {
+			foreach ( (array) $query->posts as $id ) {
+				$data  = get_post_meta( $id, '_imagify_data', true );
+				$error = ! empty( $data['sizes']['full']['error'] ) ? $data['sizes']['full']['error'] : '';
+
+				if ( false !== strpos( $error, 'This image is already compressed' ) ) {
+					update_post_meta( $id, '_imagify_status', 'already_optimized' );
+				}
+			}
+		}
+
+		// Auto-activate the Admin Bar option.
+		$options->set( 'admin_bar_menu', 1 );
+	}
+
+	// 1.3.2
+	if ( version_compare( $site_version, '1.3.2' ) < 0 ) {
+		// Update all already optimized images status from 'error' to 'already_optimized'.
+		$query = new WP_Query( array(
+			'is_imagify'             => true,
+			'post_type'              => 'attachment',
+			'post_status'            => imagify_get_post_statuses(),
+			'post_mime_type'         => imagify_get_mime_types(),
+			'meta_query'             => array(
+				'relation' => 'AND',
+				array(
+					'key'     => '_imagify_data',
+					'compare' => 'EXISTS',
+				),
+				array(
+					'key'     => '_imagify_optimization_level',
+					'compare' => 'NOT EXISTS',
+				),
+			),
+			'posts_per_page'         => -1,
+			'update_post_term_cache' => false,
+			'no_found_rows'          => true,
+			'fields'                 => 'ids',
+		) );
+
+		if ( $query->posts ) {
+			foreach ( (array) $query->posts as $id ) {
+				$data  = get_post_meta( $id, '_imagify_data', true );
+				$stats = isset( $data['stats'] ) ? $data['stats'] : [];
+
+				if ( isset( $stats['aggressive'] ) ) {
+					update_post_meta( $id, '_imagify_optimization_level', (int) $stats['aggressive'] );
+				}
+			}
+		}
+	}
+
+	// 1.4.5
+	if ( version_compare( $site_version, '1.4.5' ) < 0 ) {
+		// Delete all transients used for async optimization.
+		$wpdb->query( $wpdb->prepare( "DELETE from $wpdb->options WHERE option_name LIKE %s", Imagify_DB::esc_like( '_transient_imagify-async-in-progress-' ) . '%' ) );
+	}
+
+	// 1.7
+	if ( version_compare( $site_version, '1.7' ) < 0 ) {
+		// Migrate data.
+		Imagify_Cron_Library_Size::get_instance()->do_event();
+
+		if ( ! imagify_is_active_for_network() ) {
+			// Make sure the settings are autoloaded.
+			$wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->options} SET `autoload` = 'yes' WHERE `autoload` != 'yes' AND option_name = %s", $options->get_option_name() ) );
+		}
+
+		// Rename the option that stores the NGG table version. Since the table is also updated in 1.7, let's simply delete the option.
+		delete_option( $wpdb->prefix . 'ngg_imagify_data_db_version' );
+	}
+
+	// 1.8.1
+	if ( version_compare( $site_version, '1.8.1' ) < 0 ) {
+		// Custom folders: replace `{{ABSPATH}}/` by `{{ROOT}}/`.
+		$filesystem  = imagify_get_filesystem();
+		$replacement = '{{ROOT}}/';
+
+		if ( $filesystem->has_wp_its_own_directory() ) {
+			$replacement .= preg_replace( '@^' . preg_quote( $filesystem->get_site_root(), '@' ) . '@', '', $filesystem->get_abspath() );
+		}
+
+		$replacement = Imagify_DB::esc_like( $replacement );
+
+		$wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->base_prefix}imagify_files SET path = REPLACE( path, '{{ABSPATH}}/', %s ) WHERE path LIKE %s", $replacement, '{{ABSPATH}}/%' ) );
+		$wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->base_prefix}imagify_folders SET path = REPLACE( path, '{{ABSPATH}}/', %s ) WHERE path LIKE %s", $replacement, '{{ABSPATH}}/%' ) );
+	}
+
+	// 1.8.2
+	if ( version_compare( $site_version, '1.8.2' ) < 0 ) {
+		Imagify_Options::get_instance()->set( 'partner_links', 1 );
+	}
+
+	// 1.9.6
+	if ( version_compare( $site_version, '1.9.6' ) < 0 ) {
+		\Imagify\Stats\OptimizedMediaWithoutWebp::get_instance()->clear_cache();
+	}
+
+	// 1.9.11
+	if ( version_compare( $site_version, '1.9.11' ) < 0 ) {
+		imagify_secure_custom_directories();
+	}
+
+	if ( version_compare( $site_version, '2.0' ) < 0 ) {
+		Imagify_Options::get_instance()->set( 'optimization_level', 2 );
+	}
+}
+add_action( 'imagify_upgrade', '_imagify_new_upgrade', 10, 2 );
+
+/**
+ * Scan imagify directories and add `index.php` files where missing.
+ *
+ * @since 1.9.11
+ *
+ * @return void
+ */
+function imagify_secure_custom_directories() {
+	$filesystem = imagify_get_filesystem();
+
+	Imagify_Custom_Folders::add_indexes();
+
+	$conf_dir = $filesystem->get_site_root() . 'conf';
+	Imagify_Custom_Folders::add_indexes( $conf_dir );
+
+	$backup_dir = get_imagify_backup_dir_path();
+	Imagify_Custom_Folders::add_indexes( $backup_dir );
+}
+add_action( 'imagify_activation', 'imagify_secure_custom_directories' );

wp/wp-content/plugins/imagify/inc/admin/upload.php

@@ -0,0 +1,131 @@
+<?php
+defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
+
+add_filter( 'manage_media_columns', '_imagify_manage_media_columns' );
+/**
+ * Add "Imagify" column in upload.php.
+ *
+ * @since  1.0
+ * @author Jonathan Buttigieg
+ *
+ * @param  array $columns An array of columns displayed in the Media list table.
+ * @return array
+ */
+function _imagify_manage_media_columns( $columns ) {
+	if ( imagify_get_context( 'wp' )->current_user_can( 'optimize' ) ) {
+		$columns['imagify_optimized_file'] = __( 'Imagify', 'imagify' );
+	}
+
+	return $columns;
+}
+
+add_action( 'manage_media_custom_column', '_imagify_manage_media_custom_column', 10, 2 );
+/**
+ * Add content to the "Imagify" columns in upload.php.
+ *
+ * @since  1.0
+ * @author Jonathan Buttigieg
+ *
+ * @param string $column_name   Name of the custom column.
+ * @param int    $attachment_id Attachment ID.
+ */
+function _imagify_manage_media_custom_column( $column_name, $attachment_id ) {
+	if ( 'imagify_optimized_file' !== $column_name ) {
+		return;
+	}
+
+	$process = imagify_get_optimization_process( $attachment_id, 'wp' );
+
+	echo get_imagify_media_column_content( $process );
+}
+
+add_action( 'restrict_manage_posts', '_imagify_attachments_filter_dropdown' );
+/**
+ * Adds a dropdown that allows filtering on the attachments Imagify status.
+ *
+ * @since  1.0
+ * @author Jonathan Buttigieg
+ */
+function _imagify_attachments_filter_dropdown() {
+	if ( ! Imagify_Views::get_instance()->is_wp_library_page() ) {
+		return;
+	}
+
+	$optimized   = imagify_count_optimized_attachments();
+	$unoptimized = imagify_count_unoptimized_attachments();
+	$errors      = imagify_count_error_attachments();
+	$status      = isset( $_GET['imagify-status'] ) ? wp_unslash( $_GET['imagify-status'] ) : 0; // WPCS: CSRF ok.
+	$options     = array(
+		'optimized'   => _x( 'Optimized', 'Media Files', 'imagify' ),
+		'unoptimized' => _x( 'Unoptimized', 'Media Files', 'imagify' ),
+		'errors'      => _x( 'Errors', 'Media Files', 'imagify' ),
+	);
+
+	echo '<label class="screen-reader-text" for="filter-by-optimization-status">' . __( 'Filter by status', 'imagify' ) . '</label>';
+	echo '<select id="filter-by-optimization-status" name="imagify-status">';
+		echo '<option value="0" selected="selected">' . __( 'All Media Files', 'imagify' ) . '</option>';
+
+	foreach ( $options as $value => $label ) {
+		echo '<option value="' . $value . '" ' . selected( $status, $value, false ) . '>' . $label . ' (' . ${$value} . ')</option>';
+	}
+	echo '</select>&nbsp;';
+}
+
+add_filter( 'request', '_imagify_sort_attachments_by_status' );
+/**
+ * Modify the query based on the imagify-status variable in $_GET.
+ *
+ * @since  1.0
+ * @author Jonathan Buttigieg
+ *
+ * @param  array $vars The array of requested query variables.
+ * @return array
+ */
+function _imagify_sort_attachments_by_status( $vars ) {
+	if ( empty( $_GET['imagify-status'] ) || ! Imagify_Views::get_instance()->is_wp_library_page() ) { // WPCS: CSRF ok.
+		return $vars;
+	}
+
+	$status       = wp_unslash( $_GET['imagify-status'] ); // WPCS: CSRF ok.
+	$meta_key     = '_imagify_status';
+	$meta_compare = '=';
+	$relation     = array();
+
+	switch ( $status ) {
+		case 'unoptimized':
+			$meta_key     = '_imagify_data';
+			$meta_compare = 'NOT EXISTS';
+			break;
+		case 'optimized':
+			$status   = 'success';
+			$relation = array(
+				'key'     => $meta_key,
+				'value'   => 'already_optimized',
+				'compare' => $meta_compare,
+			);
+			break;
+		case 'errors':
+			$status = 'error';
+			break;
+		default:
+			return $vars;
+	}
+
+	$vars = array_merge( $vars, array(
+		'meta_query' => array(
+			'relation' => 'or',
+			array(
+				'key'     => $meta_key,
+				'value'   => $status,
+				'compare' => $meta_compare,
+			),
+			$relation,
+		),
+	) );
+
+	if ( ! key_exists( 'post_mime_type', $vars ) ) {
+		$vars['post_mime_type'] = imagify_get_mime_types();
+	}
+
+	return $vars;
+}