<?php
/**
 * Plugin Name: Imagify
 * Plugin URI: https://wordpress.org/plugins/imagify/
 *
 * Compatibility Description: Enables support for these Imagify Image Optimizer features:
 * auto-optimize images on upload, bulk optimizer, resize larger images, optimization levels (normal, aggressive, ultra).
 *
 * https://github.com/wpCloud/wp-stateless/issues/206
 */

namespace wpCloud\StatelessMedia {

  if( !class_exists( 'wpCloud\StatelessMedia\Imagify' ) ) {

    class Imagify extends ICompatibility {
      protected $id = 'imagify';
      protected $title = 'Imagify Image Optimizer';
      protected $constant = 'WP_STATELESS_COMPATIBILITY_IMAGIFY';
      protected $description = 'Enables support for these Imagify Image Optimizer features: auto-optimize images on upload, bulk optimizer, resize larger images, optimization levels (normal, aggressive, ultra).';
      protected $plugin_file = [ 'imagify/imagify.php', 'imagify-plugin/imagify.php' ];
      protected $sm_mode_not_supported = [ 'stateless' ];

      public function module_init( $sm ) {
        // Skip sync on upload when attachment is image, sync will be handled after image is optimized.
        // Disabling for now because it's cause problem.
        //add_filter( 'wp_stateless_skip_add_media', array( $this, 'skip_add_media' ), 10, 5 );
        add_filter( 'before_imagify_optimize_attachment', array( $this, 'fix_missing_file' ), 10 );
        add_action( 'after_imagify_optimize_attachment', array( $this, 'after_imagify_optimize_attachment' ), 10 );

        //hook for Imagify since version 1.9
        add_filter( 'wp_stateless_skip_remove_media', array( $this, 'skip_remove_media' ), 10, 5 );
        add_action( 'imagify_after_optimize_file', array( $this, 'imagify_after_optimize_file' ), 10, 2 );
        add_action( 'imagify_before_optimize_size', array( $this, 'imagify_before_optimize_size' ), 10, 7 );

        // if imagify implement this filter then enable it.
        add_filter( 'imagify_has_backup', array( $this, 'imagify_has_backup' ), 10, 2 );

        add_filter( 'before_imagify_restore_attachment', array( $this, 'get_image_from_gcs' ), 10 );
        add_action( 'after_imagify_restore_attachment', array( $this, 'after_imagify_optimize_attachment' ), 10 );
        // Sync from sync tab
        add_action( 'sm:synced::image', array( $this, 'get_image_from_gcs' ) );
      }

      /**
       * Whether to skip the sync on image upload before the image is optimized.
       * The sync is skipped if the image is compatible with Smush.
       *
       * The image will be synced after it's get optimized using the 'wp_smush_image_optimised' action.
       *
       *
       * @param bool $return This should return true if want to skip the sync.
       * @param int $metadata Metadata for the attachment.
       * @param string $attachment_id Attachment ID.
       * @param bool $force Whether to force the sync even the file already exist in GCS.
       * @param array $args Whether to only sync the full size image.
       *
       * @return bool  $return         True to skip the sync and false to do the sync.
       *
       */
      public function skip_add_media( $return, $metadata, $attachment_id, $force = false, $args = array() ) {
        global $doing_manual_sync;
        $args = wp_parse_args( $args, array( 'no_thumb' => false, ) );

        if( $force || $doing_manual_sync || !get_imagify_option( 'auto_optimize' ) || $args[ 'no_thumb' ] == true ) return false;

        $imagify = new \Imagify_Attachment( $attachment_id );
        if( is_callable( array( $imagify, 'is_extension_supported' ) ) ) {
          if( !$imagify->is_extension_supported() ) {
            return false;
          }
        } elseif( function_exists( 'imagify_is_attachment_mime_type_supported' ) ) {
          // Use `imagify_is_attachment_mime_type_supported( $attachment_id )`.
          if( !imagify_is_attachment_mime_type_supported( $attachment_id ) ) {
            return false;
          }
        } elseif( !wp_attachment_is_image( $attachment_id ) ) {
          return false;
        }

        return true;
      }

      /**
       * Added fix for Imagify version 1.9
       * In Ephemeral mode remove files from server after optimization process `imagify_after_optimize_file`
       * @param $return
       * @param $metadata
       * @param $attachment_id
       * @param bool $force
       * @param array $args
       * @return bool
       * @author palant@ud
       */
      public function skip_remove_media( $return, $metadata, $attachment_id, $force = false, $args = array() ) {
        global $doing_manual_sync;

        $args = wp_parse_args( $args, array( 'no_thumb' => false ) );

        if( $force || $doing_manual_sync || !get_imagify_option( 'auto_optimize' ) || $args[ 'no_thumb' ] == true ) return false;

        $imagify = new \Imagify\Optimization\File( get_attached_file( $attachment_id ) );

        if( is_callable( array( $imagify, 'is_supported' ) ) ) {
          if( !$imagify->is_supported( imagify_get_mime_types() ) ) {
            return false;
          }
        } elseif( function_exists( 'imagify_is_attachment_mime_type_supported' ) ) {
          // Use `imagify_is_attachment_mime_type_supported( $attachment_id )`.
          if( !imagify_is_attachment_mime_type_supported( $attachment_id ) ) {
            return false;
          }
        } elseif( !wp_attachment_is_image( $attachment_id ) ) {
          return false;
        }

        return true;
      }

      /**
       * Try to restore images before compression
       *
       * @param $attachment_id
       * @return mixed
       */
      public function fix_missing_file( $attachment_id ) {
        /**
         * If mode is ephemeral then we change it to cdn in order images not being deleted before optimization
         * Remember that we changed mode via global var
         */
        if( ud_get_stateless_media()->get( 'sm.mode' ) == 'ephemeral' ) {
          ud_get_stateless_media()->set( 'sm.mode', 'cdn' );
          global $wp_stateless_imagify_mode;
          $wp_stateless_imagify_mode = 'ephemeral';
        }

        $upload_basedir = wp_upload_dir();
        $upload_basedir = trailingslashit( $upload_basedir[ 'basedir' ] );
        $meta_data = wp_get_attachment_metadata( $attachment_id );
        $file = $upload_basedir . $meta_data[ 'file' ];

        /**
         * Try to get all missing files from GCS
         */
        if( !file_exists( $file ) ) {
          ud_get_stateless_media()->get_client()->get_media( apply_filters( 'wp_stateless_file_name', $meta_data[ 'file' ] ), true, $file );
        }

        if( !empty( $meta_data[ 'sizes' ] ) && is_array( $meta_data[ 'sizes' ] ) ) {
          $upload_basedir = trailingslashit( dirname( $file ) );
          foreach( $meta_data[ 'sizes' ] as $image ) {
            if( !empty( $image[ 'gs_name' ] ) && !file_exists( $file = $upload_basedir . $image[ 'file' ] ) ) {
              ud_get_stateless_media()->get_client()->get_media( apply_filters( 'wp_stateless_file_name', $image[ 'gs_name' ] ), true, $file );
            }
          }
        }

      }

      /**
       * If image size not exist then upload it to GS.
       *
       * $args = array(
       *      'thumbnail' => $thumbnail,
       *      'p_img_large' => $p_img_large,
       *   )
       * @param $id
       */
      public function after_imagify_optimize_attachment( $id ) {
        /**
         * Restore ephemeral mode if needed
         */
        global $wp_stateless_imagify_mode;
        if( $wp_stateless_imagify_mode == 'ephemeral' ) {
          ud_get_stateless_media()->set( 'sm.mode', 'ephemeral' );
        }

        $metadata = wp_get_attachment_metadata( $id );
        ud_get_stateless_media()->add_media( $metadata, $id, true );

        // Sync backup file with GCS
        if( current_filter() == 'after_imagify_optimize_attachment' ) {
          /**
           * If mode is ephemeral then we change it to cdn in order images not being deleted before optimization
           * Remember that we changed mode via global var
           * @todo remove if Imagify implement "imagify_has_backup" filter.
           */
          if( ud_get_stateless_media()->get( 'sm.mode' ) == 'ephemeral' ) {
            ud_get_stateless_media()->set( 'sm.mode', 'cdn' );
            global $wp_stateless_imagify_mode;
            $wp_stateless_imagify_mode = 'ephemeral';
          }

          $file_path = get_attached_file( $id );
          $backup_path = get_imagify_attachment_backup_path( $file_path );
          if( file_exists( $backup_path ) ) {
            $overwrite = apply_filters( 'imagify_backup_overwrite_backup', false, $file_path, $backup_path );
            // wp_stateless_file_name filter will remove the basedir from the path and prepend with root dir.
            $name = apply_filters( 'wp_stateless_file_name', $backup_path );
            do_action( 'sm:sync::syncFile', $name, $backup_path, $overwrite );
          }
        }
      }

      /**
       * Restore backup file from GCS if not exist.
       * @param $id
       */
      public function get_image_from_gcs( $id ) {
        $file_path = get_attached_file( $id );
        $backup_path = get_imagify_attachment_backup_path( $file_path );
        if( !file_exists( $backup_path ) ) {
          $upload_dir = wp_upload_dir();
          $name = str_replace( trailingslashit( $upload_dir[ 'basedir' ] ), '', $backup_path );
          $name = apply_filters( 'wp_stateless_file_name', $name );
          do_action( 'sm:sync::syncFile', $name, $backup_path, true );
        }
      }

      /**
       * Check if backup exists in GCS.
       * @param $return
       * @param $has_backup
       * @return bool
       */
      public function imagify_has_backup( $return, $has_backup ) {
        if( !$return && $has_backup ) {
          $name = apply_filters( 'wp_stateless_file_name', $has_backup );
          $return = (bool) apply_filters( 'sm:sync::queue_is_exists', $name );
        }
        return $return;
      }

      /**
       * Synchronization after optmize process
       * @param $file
       * @param array $args
       */
      public function imagify_after_optimize_file( $file, $args = array() ) {

        global $wp_stateless_imagify_mode;
        if( $wp_stateless_imagify_mode == 'ephemeral' ) {
          ud_get_stateless_media()->set( 'sm.mode', 'ephemeral' );
        }

        $name = apply_filters( 'wp_stateless_file_name', basename( $file ) );

        if( file_exists( $file ) ) {
          add_filter( 'upload_mimes', array( $this, 'add_webp_mime' ), 10, 2 );
          /**
           * Media already on GCS, so only replacing data on it. For webp format adding path and status to wp_sm_sync table
           */
          do_action( 'sm:sync::syncFile', $name, $file, true, array( 'use_root' => true, 'skip_db' => ( substr( $name, -4 ) == "webp" ? false : true ) ) );
          remove_filter( 'upload_mimes', array( $this, 'add_webp_mime' ), 10 );
        }
      }

      /**
       * @param $return
       * @param $process
       * @param $file
       * @param $thumb_size
       * @param $optimization_level
       * @param $webp
       * @param $is_disabled
       * @return mixed
       */
      public function imagify_before_optimize_size( $return, $process, $file, $thumb_size, $optimization_level, $webp, $is_disabled ) {

        try {
          $attachment_id = $this->getProperties( $this->getProperties( $this->getProperties( $process )[ 'data' ] )[ 'media' ] )[ 'id' ];

          $full_size_path = $file->get_path();
          $name = apply_filters( 'wp_stateless_file_name', basename( $full_size_path ), true, $attachment_id );
          do_action( 'sm:sync::syncFile', $name, $full_size_path, true, [ 'download' => true ] );
          // error_log("\n\ndo_action( 'sm:sync::syncFile', $name, $full_size_path, true, ['download' => true] );");
        } catch( \Throwable $th ) {
          //throw $th;
        }
        return $return;
      }

      /**
       * Get properties from protected value
       * @param $process
       * @return array
       */
      public function getProperties( $process ) {
        $properties = array();
        try {
          $rc = new \ReflectionClass( $process );
          do {
            $rp = array();
            /* @var $p \ReflectionProperty */
            foreach( $rc->getProperties() as $p ) {
              $p->setAccessible( true );
              $rp[ $p->getName() ] = $p->getValue( $process );
            }
            $properties = array_merge( $rp, $properties );
          } while( $rc = $rc->getParentClass() );
        } catch( \ReflectionException $e ) {

        }
        return $properties;
      }

    }

  }

}