Classic_Editor::post_edit_assets( string $hook )

	public function post_edit_assets( $hook ){
		if( 'post.php' !== $hook && 'post-new.php' !== $hook ){
			return;
		}

		global $post;
		if( ! $post ){
			return;
		}

		$_post = Helper::get_video_post( $post );

		// video/playlist shortcode functionality
		wp_enqueue_style(
		    'cvm-shortcode-modal',
			VIMEOTHEQUE_URL . 'assets/back-end/css/shortcode-modal.css',
            [ 'wp-jquery-ui-dialog' ],
            '1.0'
        );

		wp_enqueue_script(
		    'cvm-shortcode-modal',
			VIMEOTHEQUE_URL . 'assets/back-end/js/shortcode-modal.js',
            [ 'jquery-ui-dialog' ],
            '1.0'
        );

		wp_localize_script(
		    'cvm-shortcode-modal',
            'CVM_SHORTCODE_MODAL',
			[
				'playlist_title' => __( 'Videos in playlist', 'codeflavors-vimeo-video-post-lite' ),
				'no_videos' => sprintf(
				    '%s <br />%s',
					__( 'No videos selected.', 'codeflavors-vimeo-video-post-lite' ),
					__( 'To create a playlist check some videos from the list on the right.', 'codeflavors-vimeo-video-post-lite' )
                ),
				'deleteItem' => __( 'Delete from playlist', 'codeflavors-vimeo-video-post-lite' ),
				'insert_playlist' => __( 'Add shortcode into post', 'codeflavors-vimeo-video-post-lite' ),
				'deleteCategory' => __( 'Remove category', 'codeflavors-vimeo-video-post-lite' ),
				'no_categories' => __( 'Select some categories to display videos from. Categories can be added by clicking "Add category to shortcode" button above the posts table.', 'codeflavors-vimeo-video-post-lite' )
			]
        );

		// some files are needed only on custom post type edit page
		if( $_post->is_video() ){
			// add video player for video preview on post
			Helper::enqueue_player();

			wp_enqueue_script(
			    'cvm-video-edit',
				VIMEOTHEQUE_URL . 'assets/back-end/js/video-edit.js',
                [ 'jquery', 'wp-color-picker' ],
                '1.0'
            );

			wp_enqueue_style('wp-color-picker');

			wp_enqueue_style(
			    'cvm-video-thumbnail',
				VIMEOTHEQUE_URL . 'assets/back-end/css/video-thumbnail.css',
                false,
                '1.0'
            );

			if( !$this->screen->is_block_editor ) {
				// video thumbnail functionality
				wp_enqueue_script(
					'cvm-video-thumbnail',
					VIMEOTHEQUE_URL . 'assets/back-end/js/video-thumbnail.js',
                    [ 'jquery' ],
                    '1.0'
                );

				wp_localize_script(
				    'cvm-video-thumbnail',
                    'cvm_thumb_message',
                    [
					    'loading'       => __( '... importing thumbnail', 'codeflavors-vimeo-video-post-lite' ),
					    'still_loading' => __( '... hold on, still loading' )
				    ]
                );
			}

			/**
			 * Run hook when Vimeotheque loads scripts and styles for the Classic editor.
             * @ignore
			 */
			do_action( 'vimeotheque\editor\classic-editor-enqueue');

		}
	}