e_hint ) {
			$documents = WPO_WCPDF()->documents->get_documents();

			foreach ( $documents as $document ) {
				if ( $document->get_type() == 'invoice' ) {
					$invoice_email_ids = $document->get_attach_to_email_ids();
					if ( empty( $invoice_email_ids ) ) {
						include_once( WPO_WCPDF()->plugin_path() . '/includes/views/attachment-settings-hint.php' );
					}
				}
			}
		}
	}

	public function get_installed_templates_list() {
		$installed_templates = WPO_WCPDF()->settings->get_installed_templates();
		$template_list = array();
		foreach ( $installed_templates as $path => $template_id ) {
			$template_name = basename( $template_id );
			$group = dirname( $template_id );
			switch ( $group ) {
				case 'default':
				case 'premium_plugin':
					// no suffix
					break;
				case 'theme':
				default:
					$template_name = sprintf( '%s (%s)', $template_name, __( 'Custom', 'woocommerce-pdf-invoices-packing-slips' ) );
					break;
			}
			$template_list[$template_id] = $template_name;
		}
		return $template_list;
	}

	/**
	 * List templates in plugin folder, theme folder & child theme folder
	 * @return array		template path => template name
	 */
	public function find_templates() {
		$installed_templates = array();
		// get base paths
		$template_base_path  = ( function_exists( 'WC' ) && is_callable( array( WC(), 'template_path' ) ) ) ? WC()->template_path() : apply_filters( 'woocommerce_template_path', 'woocommerce/' );
		$template_base_path  = untrailingslashit( $template_base_path );
		$template_paths      = array (
			// note the order: child-theme before theme, so that array_unique filters out parent doubles
			'default'     => WPO_WCPDF()->plugin_path() . '/templates/',
			'child-theme' => get_stylesheet_directory() . "/{$template_base_path}/pdf/",
			'theme'       => get_template_directory() . "/{$template_base_path}/pdf/",
		);

		$template_paths = apply_filters( 'wpo_wcpdf_template_paths', $template_paths );

		if ( defined( 'WP_CONTENT_DIR' ) && ! empty( WP_CONTENT_DIR ) && false !== strpos( WP_CONTENT_DIR, ABSPATH ) ) {
			$forwardslash_basepath = str_replace( '\\', '/', ABSPATH );
		} else {
			$forwardslash_basepath = str_replace( '\\', '/', WP_CONTENT_DIR );
		}

		foreach ( $template_paths as $template_source => $template_path ) {
			$dirs = (array) glob( $template_path . '*' , GLOB_ONLYDIR );
			
			foreach ( $dirs as $dir ) {
				if ( empty( $dir ) ) {
					continue;
				}
				// we're stripping abspath to make the plugin settings more portable
				$forwardslash_dir = str_replace( '\\', '/', $dir );
				$installed_templates[ str_replace( $forwardslash_basepath, '', $forwardslash_dir ) ] = basename( $dir );
			}
		}

		// remove parent doubles
		$installed_templates = array_unique( $installed_templates );

		if ( empty( $installed_templates ) ) {
			// fallback to Simple template for servers with glob() disabled
			$simple_template_path = str_replace( ABSPATH, '', $template_paths['default'] . 'Simple' );
			$installed_templates[$simple_template_path] = 'Simple';
		}

		return apply_filters( 'wpo_wcpdf_templates', $installed_templates );
	}

}

endif; // class_exists