first commit

wp/wp-content/plugins/imagify/classes/Optimization/Process/CustomFolders.php

@@ -0,0 +1,103 @@
+<?php
+namespace Imagify\Optimization\Process;
+
+use Imagify\Optimization\File;
+
+defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
+
+/**
+ * Optimization class for the custom folders.
+ * This class constructor accepts:
+ * - A post ID (int).
+ * - An array of data coming from the files DB table /!\
+ * - An object of data coming from the files DB table /!\
+ * - A \Imagify\Media\MediaInterface object.
+ * - A \Imagify\Media\DataInterface object.
+ *
+ * @since  1.9
+ * @see    Imagify\Media\CustomFolders
+ * @author Grégory Viguier
+ */
+class CustomFolders extends AbstractProcess {
+
+	/**
+	 * Restore the thumbnails.
+	 * This context has no thumbnails.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return bool|WP_Error True on success. A \WP_Error instance on failure.
+	 */
+	protected function restore_thumbnails() {
+		return true;
+	}
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** MISSING THUMBNAILS ====================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Get the sizes for this media that have not get through optimization.
+	 * Since this context has no thumbnails, 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 has no thumbnails, 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' ) );
+	}
+}

wp/wp-content/plugins/imagify/classes/Optimization/Process/Noop.php

@@ -0,0 +1,413 @@
+<?php
+namespace Imagify\Optimization\Process;
+
+defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
+
+/**
+ * Fallback class to optimize medias.
+ *
+ * @since  1.9
+ * @author Grégory Viguier
+ */
+class Noop implements ProcessInterface {
+
+	/**
+	 * The suffix used in the thumbnail size name.
+	 *
+	 * @var    string
+	 * @since  1.9
+	 * @author Grégory Viguier
+	 */
+	const WEBP_SUFFIX = '@imagify-webp';
+
+	/**
+	 * The suffix used in file name to create a temporary copy of the full size.
+	 *
+	 * @var    string
+	 * @since  1.9
+	 * @author Grégory Viguier
+	 */
+	const TMP_SUFFIX = '@imagify-tmp';
+
+	/**
+	 * Used for the name of the transient telling if a media is locked.
+	 * %1$s is the context, %2$s is the media ID.
+	 *
+	 * @var    string
+	 * @since  1.9
+	 * @author Grégory Viguier
+	 */
+	const LOCK_NAME = 'imagify_%1$s_%2$s_process_locked';
+
+	/**
+	 * Tell if the given entry can be accepted in the constructor.
+	 * For example it can include `is_numeric( $id )` if the constructor accepts integers.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  mixed $id Whatever.
+	 * @return bool
+	 */
+	public static function constructor_accepts( $id ) {
+		return false;
+	}
+
+	/**
+	 * Get the data instance.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return DataInterface|false
+	 */
+	public function get_data() {
+		return false;
+	}
+
+	/**
+	 * Get the media instance.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return MediaInterface|false
+	 */
+	public function get_media() {
+		return false;
+	}
+
+	/**
+	 * Get the File instance.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return File|false
+	 */
+	public function get_file() {
+		return false;
+	}
+
+	/**
+	 * Tell if the current media is valid.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return bool
+	 */
+	public function is_valid() {
+		return false;
+	}
+
+	/**
+	 * Tell if the current user is allowed to operate Imagify in this context.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  string $describer Capacity describer. See \Imagify\Context\ContextInterface->get_capacity() for possible values. Can also be a "real" user capacity.
+	 * @return bool
+	 */
+	public function current_user_can( $describer ) {
+		return false;
+	}
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** OPTIMIZATION ============================================================================ */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Optimize a media files by pushing tasks into the queue.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  int $optimization_level The optimization level (0=normal, 1=aggressive, 2=ultra).
+	 * @return bool|WP_Error           True if successfully launched. A \WP_Error instance on failure.
+	 */
+	public function optimize( $optimization_level = null ) {
+		return new \WP_Error( 'invalid_media', __( 'This media is not valid.', 'imagify' ) );
+	}
+
+	/**
+	 * Re-optimize a media files with a different level.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  int $optimization_level The optimization level (0=normal, 1=aggressive, 2=ultra).
+	 * @return bool|WP_Error           True if successfully launched. A \WP_Error instance on failure.
+	 */
+	public function reoptimize( $optimization_level = null ) {
+		return new \WP_Error( 'invalid_media', __( 'This media is not valid.', 'imagify' ) );
+	}
+
+	/**
+	 * Optimize several file sizes by pushing tasks into the queue.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  array $sizes              An array of media sizes (strings). Use "full" for the size of the main file.
+	 * @param  int   $optimization_level The optimization level (0=normal, 1=aggressive, 2=ultra).
+	 * @return bool|WP_Error             True if successfully launched. A \WP_Error instance on failure.
+	 */
+	public function optimize_sizes( $sizes, $optimization_level = null ) {
+		return new \WP_Error( 'invalid_media', __( 'This media is not valid.', 'imagify' ) );
+	}
+
+	/**
+	 * Optimize one file with Imagify directly.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  string $size               The media size.
+	 * @param  int    $optimization_level The optimization level (0=normal, 1=aggressive, 2=ultra).
+	 * @return array|WP_Error             The optimization data. A \WP_Error instance on failure.
+	 */
+	public function optimize_size( $size, $optimization_level = null ) {
+		return new \WP_Error( 'invalid_media', __( 'This media is not valid.', 'imagify' ) );
+	}
+
+	/**
+	 * Restore the media files from the backup file.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return bool|WP_Error True on success. A \WP_Error instance on failure.
+	 */
+	public function restore() {
+		return new \WP_Error( 'invalid_media', __( 'This media is not valid.', 'imagify' ) );
+	}
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** MISSING THUMBNAILS ====================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Get the sizes for this media that have not get through optimization.
+	 * No sizes are returned if the file is not optimized, has no backup, or is not an image.
+	 * The 'full' size os never returned.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return array|WP_Error {
+	 *     A WP_Error object on failure.
+	 *     An array of data for the thumbnail sizes on success.
+	 *     Size names are used as array keys.
+	 *
+	 *     @type int    $width  The image width.
+	 *     @type int    $height The image height.
+	 *     @type bool   $crop   True to crop, false to resize.
+	 *     @type string $name   The size name.
+	 *     @type string $file   The name the thumbnail "should" have.
+	 * }
+	 */
+	public function get_missing_sizes() {
+		return [];
+	}
+
+	/**
+	 * Optimize missing thumbnail sizes.
+	 *
+	 * @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() {
+		return new \WP_Error( 'invalid_media', __( 'This media is not valid.', 'imagify' ) );
+	}
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** BACKUP FILE ============================================================================= */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Delete the backup file.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 */
+	public function delete_backup() {}
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** RESIZE FILE ============================================================================= */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Maybe resize an image.
+	 *
+	 * @since  1.9
+	 * @access protected
+	 * @author Grégory Viguier
+	 *
+	 * @param  string $size   The size name.
+	 * @param  File   $file   A File instance.
+	 * @return array|WP_Error A \WP_Error instance on failure, an array on success as follow: {
+	 *     @type bool $resized   True when the image has been resized.
+	 *     @type bool $backuped  True when the image has been backuped.
+	 *     @type int  $file_size The file size in bytes.
+	 * }
+	 */
+	public function maybe_resize( $size, $file ) {
+		return [
+			'resized'   => false,
+			'backuped'  => false,
+			'file_size' => 0,
+		];
+	}
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** WEBP ==================================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Generate WebP images if they are missing.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return bool|WP_Error True if successfully launched. A \WP_Error instance on failure.
+	 */
+	public function generate_webp_versions() {
+		return new \WP_Error( 'invalid_media', __( 'This media is not valid.', 'imagify' ) );
+	}
+
+	/**
+	 * Delete the WebP images.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 */
+	public function delete_webp_files() {}
+
+	/**
+	 * Tell if a thumbnail size is an "Imagify WebP" size.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  string $size_name The size name.
+	 * @return string|bool       The unsuffixed name of the size if WebP. False if not WebP.
+	 */
+	public function is_size_webp( $size_name ) {
+		return false;
+	}
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** PROCESS STATUS ========================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Tell if a process is running for this media.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return bool
+	 */
+	public function is_locked() {
+		return false;
+	}
+
+	/**
+	 * Set the running status to "running" for a period of time.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 */
+	public function lock() {}
+
+	/**
+	 * Delete the running status.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 */
+	public function unlock() {}
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** DATA ==================================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Tell if a size already has optimization data.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  string $size The size name.
+	 * @return bool
+	 */
+	public function size_has_optimization_data( $size ) {
+		return false;
+	}
+
+	/**
+	 * Update the optimization data for a size.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  object $response The API response.
+	 * @param  string $size     The size name.
+	 * @param  int    $level    The optimization level (0=normal, 1=aggressive, 2=ultra).
+	 * @return array            {
+	 *     The optimization data.
+	 *
+	 *     @type string $size           The size name.
+	 *     @type int    $level          The optimization level.
+	 *     @type string $status         The status: 'success', 'already_optimized', 'error'.
+	 *     @type bool   $success        True if successfully optimized. False on error or if already optimized.
+	 *     @type string $error          An error message.
+	 *     @type int    $original_size  The weight of the file, before optimization.
+	 *     @type int    $optimized_size The weight of the file, once optimized.
+	 * }
+	 */
+	public function update_size_optimization_data( $response, $size, $level ) {
+		return [
+			'size'           => 'noop',
+			'level'          => false,
+			'status'         => '',
+			'success'        => false,
+			'error'          => '',
+			'original_size'  => 0,
+			'optimized_size' => 0,
+		];
+	}
+}

wp/wp-content/plugins/imagify/classes/Optimization/Process/ProcessInterface.php

@@ -0,0 +1,362 @@
+<?php
+namespace Imagify\Optimization\Process;
+
+defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
+
+/**
+ * Interface to use to optimize medias.
+ *
+ * @since  1.9
+ * @author Grégory Viguier
+ */
+interface ProcessInterface {
+
+	/**
+	 * Tell if the given entry can be accepted in the constructor.
+	 * For example it can include `is_numeric( $id )` if the constructor accepts integers.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  mixed $id Whatever.
+	 * @return bool
+	 */
+	public static function constructor_accepts( $id );
+
+	/**
+	 * Get the data instance.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return DataInterface|false
+	 */
+	public function get_data();
+
+	/**
+	 * Get the media instance.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return MediaInterface|false
+	 */
+	public function get_media();
+
+	/**
+	 * Get the File instance of the original file.
+	 *
+	 * @since  1.9.8
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return File|false
+	 */
+	public function get_original_file();
+
+	/**
+	 * Get the File instance of the full size file.
+	 *
+	 * @since  1.9.8
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return File|false
+	 */
+	public function get_fullsize_file();
+
+	/**
+	 * Tell if the current media is valid.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return bool
+	 */
+	public function is_valid();
+
+	/**
+	 * Tell if the current user is allowed to operate Imagify in this context.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  string $describer Capacity describer. See \Imagify\Context\ContextInterface->get_capacity() for possible values. Can also be a "real" user capacity.
+	 * @return bool
+	 */
+	public function current_user_can( $describer );
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** OPTIMIZATION ============================================================================ */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Optimize a media files by pushing tasks into the queue.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  int $optimization_level The optimization level (0=normal, 1=aggressive, 2=ultra).
+	 * @return bool|WP_Error           True if successfully launched. A \WP_Error instance on failure.
+	 */
+	public function optimize( $optimization_level = null );
+
+	/**
+	 * Re-optimize a media files with a different level.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  int $optimization_level The optimization level (0=normal, 1=aggressive, 2=ultra).
+	 * @return bool|WP_Error           True if successfully launched. A \WP_Error instance on failure.
+	 */
+	public function reoptimize( $optimization_level = null );
+
+	/**
+	 * Optimize several file sizes by pushing tasks into the queue.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  array $sizes              An array of media sizes (strings). Use "full" for the size of the main file.
+	 * @param  int   $optimization_level The optimization level (0=normal, 1=aggressive, 2=ultra).
+	 * @return bool|WP_Error             True if successfully launched. A \WP_Error instance on failure.
+	 */
+	public function optimize_sizes( $sizes, $optimization_level = null );
+
+	/**
+	 * Optimize one file with Imagify directly.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  string $size               The media size.
+	 * @param  int    $optimization_level The optimization level (0=normal, 1=aggressive, 2=ultra).
+	 * @return array|WP_Error             The optimization data. A \WP_Error instance on failure.
+	 */
+	public function optimize_size( $size, $optimization_level = null );
+
+	/**
+	 * Restore the media files from the backup file.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return bool|WP_Error True on success. A \WP_Error instance on failure.
+	 */
+	public function restore();
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** MISSING THUMBNAILS ====================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Get the sizes for this media that have not get through optimization.
+	 * No sizes are returned if the file is not optimized, has no backup, or is not an image.
+	 * The 'full' size os never returned.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return array|WP_Error {
+	 *     A WP_Error object on failure.
+	 *     An array of data for the thumbnail sizes on success.
+	 *     Size names are used as array keys.
+	 *
+	 *     @type int    $width  The image width.
+	 *     @type int    $height The image height.
+	 *     @type bool   $crop   True to crop, false to resize.
+	 *     @type string $name   The size name.
+	 *     @type string $file   The name the thumbnail "should" have.
+	 * }
+	 */
+	public function get_missing_sizes();
+
+	/**
+	 * Optimize missing thumbnail sizes.
+	 *
+	 * @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();
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** BACKUP FILE ============================================================================= */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Delete the backup file.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 */
+	public function delete_backup();
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** RESIZE FILE ============================================================================= */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Maybe resize an image.
+	 *
+	 * @since  1.9
+	 * @access protected
+	 * @author Grégory Viguier
+	 *
+	 * @param  string $size   The size name.
+	 * @param  File   $file   A File instance.
+	 * @return array|WP_Error A \WP_Error instance on failure, an array on success as follow: {
+	 *     @type bool $resized   True when the image has been resized.
+	 *     @type bool $backuped  True when the image has been backuped.
+	 *     @type int  $file_size The file size in bytes.
+	 * }
+	 */
+	public function maybe_resize( $size, $file );
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** WEBP ==================================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Generate WebP images if they are missing.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return bool|WP_Error True if successfully launched. A \WP_Error instance on failure.
+	 */
+	public function generate_webp_versions();
+
+	/**
+	 * Delete the WebP images.
+	 * This doesn't delete the related optimization data.
+	 *
+	 * @since  1.9
+	 * @since  1.9.6 Return WP_Error or true.
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  bool $keep_full Set to true to keep the full size.
+	 * @return bool|\WP_Error  True on success. A \WP_Error object on failure.
+	 */
+	public function delete_webp_files( $keep_full = false );
+
+	/**
+	 * Tell if a thumbnail size is an "Imagify WebP" size.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  string $size_name The size name.
+	 * @return string|bool       The unsuffixed name of the size if WebP. False if not WebP.
+	 */
+	public function is_size_webp( $size_name );
+
+	/**
+	 * Tell if the media has WebP versions.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return bool
+	 */
+	public function has_webp();
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** PROCESS STATUS ========================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Tell if a process is running for this media.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return bool
+	 */
+	public function is_locked();
+
+	/**
+	 * Set the running status to "running" for a period of time.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 */
+	public function lock();
+
+	/**
+	 * Delete the running status.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 */
+	public function unlock();
+
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** DATA ==================================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Tell if a size already has optimization data.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  string $size The size name.
+	 * @return bool
+	 */
+	public function size_has_optimization_data( $size );
+
+	/**
+	 * Update the optimization data for a size.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  object $response The API response.
+	 * @param  string $size     The size name.
+	 * @param  int    $level    The optimization level (0=normal, 1=aggressive, 2=ultra).
+	 * @return array            {
+	 *     The optimization data.
+	 *
+	 *     @type string $size           The size name.
+	 *     @type int    $level          The optimization level.
+	 *     @type string $status         The status: 'success', 'already_optimized', 'error'.
+	 *     @type bool   $success        True if successfully optimized. False on error or if already optimized.
+	 *     @type string $error          An error message.
+	 *     @type int    $original_size  The weight of the file, before optimization.
+	 *     @type int    $optimized_size The weight of the file, once optimized.
+	 * }
+	 */
+	public function update_size_optimization_data( $response, $size, $level );
+}

wp/wp-content/plugins/imagify/classes/Optimization/Process/WP.php

@@ -0,0 +1,255 @@
+<?php
+namespace Imagify\Optimization\Process;
+
+use Imagify\Optimization\File;
+
+defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
+
+/**
+ * Optimization class for the attachments in the WP library.
+ * This class constructor accepts:
+ * - A post ID (int).
+ * - A \WP_Post object.
+ * - A \Imagify\Media\MediaInterface object.
+ * - A \Imagify\Media\DataInterface object.
+ *
+ * @since  1.9
+ * @author Grégory Viguier
+ */
+class WP extends AbstractProcess {
+
+	/** ----------------------------------------------------------------------------------------- */
+	/** MISSING THUMBNAILS ====================================================================== */
+	/** ----------------------------------------------------------------------------------------- */
+
+	/**
+	 * Get the sizes for this media that have not get through optimization.
+	 * No sizes are returned if the file is not optimized, has no backup, or is not an image.
+	 * The 'full' size os never returned.
+	 *
+	 * @since  1.9
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return array|WP_Error {
+	 *     A WP_Error object on failure.
+	 *     An array of data for the thumbnail sizes on success.
+	 *     Size names are used as array keys.
+	 *
+	 *     @type int    $width  The image width.
+	 *     @type int    $height The image height.
+	 *     @type bool   $crop   True to crop, false to resize.
+	 *     @type string $name   The size name.
+	 *     @type string $file   The name the thumbnail "should" have.
+	 * }
+	 */
+	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' ) );
+		}
+
+		// Compare registered sizes and optimized sizes.
+		$context_sizes   = $media->get_context_instance()->get_thumbnail_sizes();
+		$optimized_sizes = $data->get_optimization_data();
+		$missing_sizes   = array_diff_key( $context_sizes, $optimized_sizes['sizes'] );
+
+		if ( ! $missing_sizes ) {
+			// We have everything we need.
+			return [];
+		}
+
+		$media_sizes = $media->get_media_files();
+		$full_size   = $media_sizes['full'];
+
+		if ( ! $full_size['path'] || ! $full_size['width'] || ! $full_size['height'] ) {
+			return [];
+		}
+
+		$file_name = $this->filesystem->path_info( $full_size['path'] );
+		$file_name = $file_name['file_base'] . '-{%suffix%}.' . $file_name['extension'];
+
+		// Test if the missing sizes are needed.
+		foreach ( $missing_sizes as $size_name => $size_data ) {
+			if ( $full_size['width'] === $size_data['width'] && $full_size['height'] === $size_data['height'] ) {
+				// Same dimensions as the full size.
+				unset( $missing_sizes[ $size_name ] );
+				continue;
+			}
+
+			if ( ! empty( $media_sizes[ $size_name ]['disabled'] ) ) {
+				// This size must not be optimized.
+				unset( $missing_sizes[ $size_name ] );
+				continue;
+			}
+
+			$resize_result = image_resize_dimensions( $full_size['width'], $full_size['height'], $size_data['width'], $size_data['height'], $size_data['crop'] );
+
+			if ( ! $resize_result ) {
+				// This thumbnail is not needed, it is smaller than this size.
+				unset( $missing_sizes[ $size_name ] );
+				continue;
+			}
+
+			// Provide what should be the file name.
+			list( , , , , $new_width, $new_height ) = $resize_result;
+			$missing_sizes[ $size_name ]['file']    = str_replace( '{%suffix%}', "{$new_width}x{$new_height}", $file_name );
+		}
+
+		return $missing_sizes;
+	}
+
+	/**
+	 * Optimize missing thumbnail sizes.
+	 *
+	 * @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' ) );
+		}
+
+		$missing_sizes = $this->get_missing_sizes();
+
+		if ( ! $missing_sizes ) {
+			return new \WP_Error( 'no_sizes', __( 'No thumbnails seem to be missing.', 'imagify' ) );
+		}
+
+		if ( is_wp_error( $missing_sizes ) ) {
+			return $missing_sizes;
+		}
+
+		if ( $this->is_locked() ) {
+			return new \WP_Error( 'media_locked', __( 'This media is already being processed.', 'imagify' ) );
+		}
+
+		$this->lock();
+
+		// Create the missing thumbnails.
+		$sizes = $this->create_missing_thumbnails( $missing_sizes );
+
+		if ( ! $sizes ) {
+			$this->unlock();
+			return new \WP_Error( 'thumbnail_creation_failed', __( 'The thumbnails failed to be created.', 'imagify' ) );
+		}
+
+		$optimization_level = $this->get_data()->get_optimization_level();
+
+		if ( false === $optimization_level ) {
+			$this->unlock();
+			return new \WP_Error( 'optimization_level_not_set', __( 'The optimization level of this media seems to have disappear from the database. You should restore this media and then launch a new optimization.', 'imagify' ) );
+		}
+
+		$args = [
+			'hook_suffix' => 'optimize_missing_thumbnails',
+			'locked'      => true,
+		];
+
+		// Optimize.
+		return $this->optimize_sizes( array_keys( $sizes ), $optimization_level, $args );
+	}
+
+	/**
+	 * Create all missing thumbnails if they don't exist and update the attachment metadata.
+	 *
+	 * @since  1.9
+	 * @access protected
+	 * @see    $this->get_missing_sizes()
+	 * @author Grégory Viguier
+	 *
+	 * @param  array $missing_sizes array {
+	 *     An array of data for the thumbnail sizes on success.
+	 *     Size names are used as array keys.
+	 *
+	 *     @type int    $width  The image width.
+	 *     @type int    $height The image height.
+	 *     @type bool   $crop   True to crop, false to resize.
+	 *     @type string $name   The size name.
+	 *     @type string $file   The name the thumbnail "should" have.
+	 * }
+	 * @return array {
+	 *     An array of thumbnail data (those without errors):
+	 *
+	 *     @type string $file      File name.
+	 *     @type int    $width     The image width.
+	 *     @type int    $height    The image height.
+	 *     @type string $mime-type The mime type.
+	 * }
+	 */
+	protected function create_missing_thumbnails( $missing_sizes ) {
+		if ( ! $missing_sizes ) {
+			return [];
+		}
+
+		$media             = $this->get_media();
+		$media_id          = $media->get_id();
+		$metadata          = wp_get_attachment_metadata( $media_id );
+		$metadata['sizes'] = ! empty( $metadata['sizes'] ) && is_array( $metadata['sizes'] ) ? $metadata['sizes'] : [];
+
+		$destination_dir = $this->filesystem->dir_path( $media->get_raw_fullsize_path() );
+		$backup_file     = new File( $media->get_backup_path() );
+		$without_errors  = [];
+		$has_new_data    = false;
+
+		// Create the missing thumbnails.
+		foreach ( $missing_sizes as $size_name => $thumbnail_data ) {
+			// The path to the destination file.
+			$thumbnail_data['path'] = $destination_dir . $thumbnail_data['file'];
+
+			if ( ! $this->filesystem->exists( $thumbnail_data['path'] ) ) {
+				$result = $backup_file->create_thumbnail( $thumbnail_data );
+
+				if ( is_array( $result ) ) {
+					// New file.
+					$metadata['sizes'][ $size_name ] = $result;
+					$has_new_data                    = true;
+				}
+			} else {
+				$result = true;
+			}
+
+			if ( ! empty( $metadata['sizes'][ $size_name ] ) && ! is_wp_error( $result ) ) {
+				// Not an error.
+				$without_errors[ $size_name ] = $metadata['sizes'][ $size_name ];
+			}
+		}
+
+		// Save the new data into the attachment metadata.
+		if ( $has_new_data ) {
+			/**
+			 * Here we don't use wp_update_attachment_metadata() to prevent triggering unwanted hooks.
+			 */
+			update_post_meta( $media_id, '_wp_attachment_metadata', $metadata );
+		}
+
+		return $without_errors;
+	}
+}