rebase from live enviornment

wp/plugins/imagify/inc/3rd-party/nextgen-gallery/classes/Optimization/Process/NGG.php

@@ -0,0 +1,88 @@
+<?php
+namespace Imagify\ThirdParty\NGG\Optimization\Process;
+
+use Imagify\Optimization\File;
+
+defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
+
+/**
+ * Optimization class for NextGen Gallery.
+ * This class constructor accepts:
+ * - A NGG image ID (int).
+ * - A \nggImage object.
+ * - A \nggdb object.
+ * - An anonym object containing a pid property (and everything else).
+ * - A \Imagify\Media\MediaInterface object.
+ *
+ * @since  1.9
+ * @see    Imagify\ThirdParty\NGG\Media\NGG
+ * @author Grégory Viguier
+ */
+class NGG extends \Imagify\Optimization\Process\AbstractProcess {
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** MISSING THUMBNAILS ====================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Get the sizes for this media that have not get through optimization.
+	 * Since this context doesn't handle this feature, this will always return an empty array, unless an error is triggered.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return array|WP_Error A WP_Error object on failure. An empty array on success: this context has no thumbnails.
+	 *                        The tests are kept for consistency.
+	 */
+	public function get_missing_sizes() {
+		// The media must have been optimized once and have a backup.
+		if ( ! $this->is_valid() ) {
+			return new \WP_Error( 'invalid_media', __( 'This media is not valid.', 'imagify' ) );
+		}
+
+		$media = $this->get_media();
+
+		if ( ! $media->is_supported() ) {
+			return new \WP_Error( 'media_not_supported', __( 'This media is not supported.', 'imagify' ) );
+		}
+
+		$data = $this->get_data();
+
+		if ( ! $data->is_optimized() ) {
+			return new \WP_Error( 'media_not_optimized', __( 'This media is not optimized yet.', 'imagify' ) );
+		}
+
+		if ( ! $media->has_backup() ) {
+			return new \WP_Error( 'no_backup', __( 'This file has no backup file.', 'imagify' ) );
+		}
+
+		if ( ! $media->is_image() ) {
+			return new \WP_Error( 'media_not_an_image', __( 'This media is not an image.', 'imagify' ) );
+		}
+
+		return [];
+	}
+
+	/**
+	 * Optimize missing thumbnail sizes.
+	 * Since this context doesn't handle this feature, this will always return a \WP_Error object.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return bool|WP_Error True if successfully launched. A \WP_Error instance on failure.
+	 */
+	public function optimize_missing_thumbnails() {
+		if ( ! $this->is_valid() ) {
+			return new \WP_Error( 'invalid_media', __( 'This media is not valid.', 'imagify' ) );
+		}
+
+		if ( ! $this->get_media()->is_supported() ) {
+			return new \WP_Error( 'media_not_supported', __( 'This media is not supported.', 'imagify' ) );
+		}
+
+		return new \WP_Error( 'no_sizes', __( 'No thumbnails seem to be missing.', 'imagify' ) );
+	}
+}