<?php
/**
 * Plugin Name: Elementor Page Builder
 * Plugin URI: https://wordpress.org/plugins/elementor/
 *
 * Compatibility Description: Ensures compatibility with Elementor.
 *
 * @Todo add manual sync to sync all elementor css file to GCS.
 *
 */

namespace wpCloud\StatelessMedia {

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

    class Elementor extends ICompatibility {
      protected $id = 'elementor';
      protected $title = 'Elementor Page Builder';
      protected $constant = 'WP_STATELESS_COMPATIBILITY_ELEMENTOR';
      protected $description = 'Ensures compatibility with Elementor Page Builder. Sync css files generated by Elementor.';
      protected $plugin_file = 'elementor/elementor.php';
      protected $non_library_sync = true;

      /**
       * @param $sm
       */
      public function module_init($sm){
        add_filter( 'set_url_scheme', array($this, 'sync_rewrite_url'), 10, 3 );
        add_action( 'elementor/core/files/clear_cache', array($this, 'delete_elementor_files') );
        add_action( 'save_post', array($this, 'delete_css_files'), 10, 3 );
        add_action( 'deleted_post', array($this, 'delete_css_files') );
        add_filter( "elementor/settings/general/success_response_data", array($this, 'delete_global_css'), 10, 3 );
        // return file names
        add_filter( 'sm:sync::nonMediaFiles', array($this, 'sync_non_media_files') );
        add_action( 'sm::pre::sync::nonMediaFiles', array($this, 'filter_css_file'), 10, 2 );
      }

      /**
       * Sync local elementor files to GCS.
       * @param $url
       * @param $scheme
       * @param $orig_scheme
       * @return string
       */
      public function sync_rewrite_url($url, $scheme, $orig_scheme){
        try{
          if(strpos($url, 'elementor/') !== false){
            $wp_uploads_dir = wp_get_upload_dir();
            $name = str_replace($wp_uploads_dir['baseurl'] . '/', '', $url);
            if($name != $url){
              $absolutePath = $wp_uploads_dir['basedir'] . '/' . $name;
              $name = apply_filters( 'wp_stateless_file_name', $name, 0);
              do_action('sm:sync::syncFile', $name, $absolutePath);
              $url = ud_get_stateless_media()->get_gs_host() . '/' . $name;
            }
          }

        }
        catch(Exception $e){
          // @todo maybe log the exception.
        }
        // We are in filter so need to return the passed value.
        return $url;
      }

      /**
       * To regenerate/delete files click Regenerate Files in
       * Elementor >> Tools >> General >> Regenerate CSS
       * All files will be deleted from GCS.
       * And will be copied to GCS again on next page view.
       */
      public function delete_elementor_files(){
        do_action('sm:sync::deleteFiles', 'elementor/');
      }

      /**
       * Delete GCS file on update/delete post.
       * @param $post_ID
       * @param null $post
       * @param null $update
       */
      public function delete_css_files( $post_ID, $post = null, $update = null ){

        if($update || current_action() === 'deleted_post'){
          $wp_uploads_dir = wp_get_upload_dir();

          $post_css = new \Elementor\Core\Files\CSS\Post( $post_ID );

          //      elementor/               css/                           'post-' . $post_id . '.css'
          $name = $post_css::UPLOADS_DIR . $post_css::DEFAULT_FILES_DIR . $post_css->get_file_name();
          $name = apply_filters( 'wp_stateless_file_name', $name, 0);
          do_action('sm:sync::deleteFile', $name);

          // $meta = $post_css->update();

          // sync_file($name, $absolutePath, $forced = false);
          // here $forced = 2 mean Force to overwrite on GCS
          // do_action('sm:sync::syncFile', $name, $wp_uploads_dir['basedir'] . '/' . $name, 2);

          // Removing status so that file will be generated next time.
          // $meta = $post_css->get_meta();
          // $meta['status'] = '';
          // update_post_meta($post_ID, $post_css::META_KEY, $meta);

        }
      }

      /**
       * Delete elementor global css file when global style is updated on Elementor Editor.
       * @param $success_response_data
       * @param $id
       * @param $data
       * @return mixed
       */
      public function delete_global_css($success_response_data, $id, $data){
        try{
          $post_css = new \Elementor\Core\Files\CSS\Global_CSS( 'global.css' );
          //      elementor/               css/                           'global.css'
          $name = $post_css::UPLOADS_DIR . $post_css::DEFAULT_FILES_DIR . $post_css->get_file_name();
          $name = apply_filters( 'wp_stateless_file_name', $name, 0);
          do_action('sm:sync::deleteFile', $name);
        }
        catch(Exception $e){
          // @todo maybe log the exception.
        }
        // We are in filter so need to return the passed value.
        return $success_response_data;
      }

      /**
       * @param $files
       * @return array
       */
      public function sync_non_media_files($files){
        $wp_uploads_dir = wp_get_upload_dir();
        $base_dir = wp_normalize_path($wp_uploads_dir['basedir'] . '/');
        $dir =  $base_dir . \Elementor\Core\Files\CSS\Post::UPLOADS_DIR . \Elementor\Core\Files\CSS\Post::DEFAULT_FILES_DIR;
        $file_list = list_files($dir);

        foreach($file_list as $file){
          $files[] = str_replace($base_dir, '', wp_normalize_path($file));
        }
        return $files;
      }

      /**
       * @param $name
       * @param $absolutePath
       */
      public function filter_css_file( $name, $absolutePath ) {
        if ( $upload_data = wp_upload_dir() && file_exists($absolutePath)) {
          try{
            $content = file_get_contents($absolutePath);

            if ( !empty( $upload_data['baseurl'] ) && !empty( $content ) ) {
              $baseurl = preg_replace('/https?:\/\//','',$upload_data['baseurl']);
              $root_dir = trim( ud_get_stateless_media()->get( 'sm.root_dir' ), '/ ' ); // Remove any forward slash and empty space.
              $root_dir = apply_filters("wp_stateless_handle_root_dir", $root_dir);
              $root_dir = !empty( $root_dir ) ? $root_dir . '/' : '';
              $image_host = ud_get_stateless_media()->get_gs_host() . $root_dir;
              $file_ext = ud_get_stateless_media()->replaceable_file_types();

              preg_match_all( '/(https?:\/\/'.str_replace('/', '\/', $baseurl).')\/(.+?)('.$file_ext.')/i', $content, $matches);
              if(!empty($matches)){
                foreach($matches[0] as $key => $match){
                  $id = attachment_url_to_postid($match);
                  if(!empty($id)){
                    Utility::add_media(null, $id, true);
                  }
                }
              }

              $content = preg_replace( '/(https?:\/\/'.str_replace('/', '\/', $baseurl).')\/(.+?)('.$file_ext.')/i', $image_host.'/$2$3', $content);
              file_put_contents($absolutePath, $content);
              preg_match('/post-(\d+).css/', $name, $match);

              if(!empty($match[1])){
                $_elementor_css = get_post_meta($match[1], '_elementor_css', true);
                if(!empty($_elementor_css)){
                  $_elementor_css['time'] = time();
                }
              }
            }
          }
          catch(Exception $e){

          }
        }
      }
    }

  }

}