BP_Document::save()

	public function save() {

		global $wpdb;

		$bp = buddypress();

		$this->id            = apply_filters_ref_array( 'bp_document_id_before_save', array( $this->id, &$this ) );
		$this->blog_id       = apply_filters_ref_array( 'bp_document_blog_id_before_save', array( $this->blog_id, &$this ) );
		$this->attachment_id = apply_filters_ref_array( 'bp_document_attachment_id_before_save', array( $this->attachment_id, &$this ) );
		$this->user_id       = apply_filters_ref_array( 'bp_document_user_id_before_save', array( $this->user_id, &$this ) );
		$this->title         = apply_filters_ref_array( 'bp_document_title_before_save', array( $this->title, &$this ) );
		$this->folder_id     = apply_filters_ref_array( 'bp_document_folder_id_before_save', array( $this->folder_id, &$this ) );
		$this->activity_id   = apply_filters_ref_array( 'bp_document_activity_id_before_save', array( $this->activity_id, &$this ) );
		$this->group_id      = apply_filters_ref_array( 'bp_document_group_id_before_save', array( $this->group_id, &$this ) );
		$this->privacy       = apply_filters_ref_array( 'bp_document_privacy_before_save', array( $this->privacy, &$this ) );
		$this->menu_order    = apply_filters_ref_array( 'bp_document_menu_order_before_save', array( $this->menu_order, &$this ) );
		$this->date_created  = apply_filters_ref_array( 'bp_document_date_created_before_save', array( $this->date_created, &$this ) );
		$this->date_modified  = apply_filters_ref_array( 'bp_document_date_modified_before_save', array( $this->date_modified, &$this ) );

		/**
		 * Fires before the current document item gets saved.
		 * Please use this hook to filter the properties above. Each part will be passed in.
		 *
		 * @param BP_Document $this Current instance of the document item being saved. Passed by reference.
		 *
		 * @since BuddyBoss 1.4.0
		 */
		do_action_ref_array( 'bp_document_before_save', array( &$this ) );

		if ( 'wp_error' === $this->error_type && $this->errors->get_error_code() ) {
			return $this->errors;
		}

		if ( empty( $this->attachment_id ) // || empty( $this->activity_id ) //todo: when forums document is saving, it should have activity id assigned if settings enabled need to check this
		) {
			if ( 'bool' === $this->error_type ) {
				return false;
			} else {
				if ( empty( $this->activity_id ) ) {
					$this->errors->add( 'bp_document_missing_activity' );
				} else {
					$this->errors->add( 'bp_document_missing_attachment' );
				}

				return $this->errors;
			}
		}

		// Generate PDF file preview image.
		$attachment_id         = $this->attachment_id;
		$pdf_preview           = false;
		$is_pdf                = false;
		$is_preview_generated  = get_post_meta( $attachment_id, 'document_preview_generated', true );
		$preview_attachment_id = (int) get_post_meta( $attachment_id, 'document_preview_attachment_id', true );
		if ( empty( $is_preview_generated ) ) {
			$extension             = bp_document_extension( $attachment_id );
			$preview_attachment_id = 0;
			$file                   = get_attached_file( $attachment_id );
			$upload_dir            = wp_upload_dir();

			if ( 'pdf' === $extension ) {
				$is_pdf         = true;
				$output_file     = wp_get_attachment_image_url( $attachment_id, 'full' );
				$output_file_src = bp_document_scaled_image_path( $attachment_id );
				if ( '' !== $output_file && '' !== basename( $output_file ) && strstr( $output_file, 'bb_documents/' ) ) {
					add_filter( 'upload_dir', 'bp_document_upload_dir_script' );
					$upload_dir = $upload_dir['basedir'];

					// Create temp folder.
					$upload_dir = $upload_dir . '/preview-image-folder-' . time();
					$preview_folder = $upload_dir;
					// If folder not exists then create.
					if ( ! is_dir( $upload_dir ) ) {

						// Create temp folder.
						wp_mkdir_p( $upload_dir );
						chmod( $upload_dir, 0777 );

						// Create given main parent folder.
						$preview_folder = $upload_dir;
						wp_mkdir_p( $preview_folder );

						$file_name = basename( $output_file );
						$extension_pos = strrpos($file_name, '.'); // find position of the last dot, so where the extension starts
						$thumb = substr($file_name, 0, $extension_pos) . '_thumb' . substr($file_name, $extension_pos);
						copy( $output_file_src, $preview_folder . '/' . $thumb );

					}

					$files = scandir( $preview_folder );
					$firstFile = $preview_folder . '/' . $files[2];
					bp_document_chmod_r( $preview_folder );

					$image_data = file_get_contents( $firstFile );

					$filename = basename( $output_file );

					$upload_dir = wp_upload_dir();
					if ( wp_mkdir_p( $upload_dir['path'] ) ) {
						$file = $upload_dir['path'] . '/' . $filename;
					} else {
						$file = $upload_dir['basedir'] . '/' . $filename;
					}

					file_put_contents( $file, $image_data );

					$wp_filetype = wp_check_filetype( $filename, null );

					$attachment = array(
						'post_mime_type' => $wp_filetype['type'],
						'post_title'     => sanitize_file_name( $filename ),
						'post_content'   => '',
						'post_status'    => 'inherit',
					);

					$preview_attachment_id = wp_insert_attachment( $attachment, $file );
					if ( ! function_exists( 'wp_generate_attachment_metadata' ) ) {
						require_once ABSPATH . 'wp-admin' . '/includes/image.php';
						require_once ABSPATH . 'wp-admin' . '/includes/file.php';
						require_once ABSPATH . 'wp-admin' . '/includes/media.php';
					}
					$attach_data = wp_generate_attachment_metadata( $preview_attachment_id, $file );
					wp_update_attachment_metadata( $preview_attachment_id, $attach_data );
					update_post_meta( $attachment_id, 'document_preview_generated', 'yes' );
					update_post_meta( $attachment_id, 'document_preview_attachment_id', $preview_attachment_id );
					$pdf_preview = true;
					BP_Document::bp_document_remove_temp_directory( $preview_folder );
					remove_filter( 'upload_dir', 'bp_document_upload_dir_script' );
				}
			} else if ( 'css' === $extension || 'txt' === $extension || 'js' === $extension || 'html' === $extension || 'htm' === $extension || 'csv' === $extension ) {
				$absolute_path  = get_attached_file( $attachment_id );
				if ( '' !== $absolute_path && '' !== basename( $absolute_path ) && strstr( $absolute_path, 'bb_documents/' ) ) {
					$upload_dir = $upload_dir['basedir'];

					// Create temp folder.
					$upload_dir = $upload_dir . '/preview-image-folder-' . time();
					$preview_folder = $upload_dir;
					// If folder not exists then create.
					if ( ! is_dir( $upload_dir ) ) {

						// Create temp folder.
						wp_mkdir_p( $upload_dir );
						chmod( $upload_dir, 0777 );

						// Create given main parent folder.
						$preview_folder = $upload_dir;
						wp_mkdir_p( $preview_folder );

						$file_name = basename( $absolute_path );
						$extension_pos = strrpos($file_name, '.'); // find position of the last dot, so where the extension starts
						$thumb = substr($file_name, 0, $extension_pos) . '_thumb' . substr($file_name, $extension_pos);
						copy( $absolute_path, $preview_folder . '/' . $thumb );

					}

					$files = scandir( $preview_folder );
					$firstFile = $preview_folder . '/' . $files[2];
					bp_document_chmod_r( $preview_folder );

					$image_data = file_get_contents( $firstFile );
					$words 				 = 10000;
					$mirror_text = strlen($image_data) > $words ? substr($image_data,0,$words).'...' : $image_data;
					update_post_meta( $attachment_id, 'document_preview_mirror_text', $mirror_text );
					BP_Document::bp_document_remove_temp_directory( $preview_folder );
				}
			}
		}

		// If we have an existing ID, update the document item, otherwise insert it.
		if ( ! empty( $this->id ) ) {
			$q = $wpdb->prepare( "UPDATE {$bp->document->table_name} SET blog_id = %d, attachment_id = %d, user_id = %d, title = %s, folder_id = %d, activity_id = %d, group_id = %d, privacy = %s, menu_order = %d, date_modified = %s WHERE id = %d", $this->blog_id, $this->attachment_id, $this->user_id, $this->title, $this->folder_id, $this->activity_id, $this->group_id, $this->privacy, $this->menu_order, $this->date_modified, $this->id );
		} else {
			$q = $wpdb->prepare( "INSERT INTO {$bp->document->table_name} ( blog_id, attachment_id, user_id, title, folder_id, activity_id, group_id, privacy, menu_order, date_created, date_modified ) VALUES ( %d, %d, %d, %s, %d, %d, %d, %s, %d, %s, %s )", $this->blog_id, $this->attachment_id, $this->user_id, $this->title, $this->folder_id, $this->activity_id, $this->group_id, $this->privacy, $this->menu_order, $this->date_created, $this->date_modified );
		}

		if ( false === $wpdb->query( $q ) ) {
			return false;
		}

		// If this is a new document item, set the $id property.
		if ( empty( $this->id ) ) {
			$this->id = $wpdb->insert_id;
		}

		if ( $preview_attachment_id ) {
			bp_document_update_meta( $this->id, 'preview_attachment_id', $preview_attachment_id );
		}

		if ( ! $pdf_preview && $is_pdf ) {
			add_filter( 'wp_image_editors', array( $this, 'bp_document_wp_image_editors' ) );
			self::bp_document_pdf_previews( array( $this->attachment_id ), true, $this->id );
			remove_filter( 'wp_image_editors', array( $this, 'bp_document_wp_image_editors' ) );
		}

		// Update folder modified date.
		$folder = (int) $this->folder_id;
		if ( $folder > 0 ) {
			bp_document_update_folder_modified_date( $folder );
		}

		/**
		 * Fires after an document item has been saved to the database.
		 *
		 * @param BP_Document $this Current instance of document item being saved. Passed by reference.
		 *
		 * @since BuddyBoss 1.4.0
		 */
		do_action_ref_array( 'bp_document_after_save', array( &$this ) );

		return true;
	}