Adds a new settings to Gravity Forms notifications allowing uploaded files to be attached to the notification and the notification format to be changed to text.

RWNotificationExtras.php

<?php
/**
 * Plugin Name: Gravity Forms - Notification Extras
 * Author: Richard Wawrzyniak
 * Description: Adds new settings to Gravity Forms Notifications enabling file uploads to be attached to notifications and the notification format to be changed to text.
 * Version: 1.0
 * 
 * Last Modified: 17/10/2014
 * Updated attach_file() to allow for possibility that uploads folder was changed
 * Added suppot for post_image fields
 * Updated and incorporated changes by blueliquiddesigns: https://gist.github.com/blueliquiddesigns/9609093
 */

class RWNotificationExtras {

    function __construct() {
        if( ! property_exists( 'GFCommon', 'version' ) || ! version_compare( GFCommon::$version, '1.8', '>=' ) )
            return;
        add_filter( 'gform_tooltips', array( $this, 'add_extra_tooltips') );
        add_filter( 'gform_notification_ui_settings', array( $this, 'notification_extra_settings' ), 10, 3 );
        add_action( 'gform_pre_notification_save', array( $this, 'save_extra_settings' ), 10, 2 );
        add_filter( 'gform_notification', array( $this, 'notification_extras' ), 5, 3 );
    }

    function add_extra_tooltips( $tooltips ) {
        $tooltips['enable_attachments'] = "<h6>" . __( "Attach uploaded files", "gravityforms" ) . "</h6>" . __( "When enabled, files uploaded via the forms file upload fields will be attached to the notification.", "gravityforms" );
        $tooltips['textFormat'] = "<h6>" . __( "Text format notifications", "gravityforms" ) . "</h6>" . __( "When enabled, the notification format will be changed to text instead of the default of HTML.", "gravityforms" );
        return $tooltips;
    }

    function notification_extra_settings( $ui_settings, $notification, $form ) {
        $enable_attachments_checked = ( rgar( $notification, 'enableAttachments' ) ) ? 'checked="checked"' : "";
        $ui_settings['enableAttachments'] = '
            <tr>
                <th>' . __( "Attachments", "gravityforms" ) . '</th>
                <td>
                    <input type="checkbox" id="enable_attachments" name="enable_attachments" value="1" ' . $enable_attachments_checked . ' />
                    <label for="enable_attachments">' . __( "Attach uploaded files", "gravityforms" ) . ' ' . gform_tooltip( "enable_attachments", "", true ) . '</label>
                </td>
            </tr>';
        $text_format_checked = ( rgar( $notification, 'textFormat' ) ) ? 'checked="checked"' : "";
        $ui_settings['textFormat'] = '
            <tr>
                <th>' . __( "Format", "gravityforms" ) . '</th>
                <td>
                    <input type="checkbox" id="text_format" name="text_format" value="1" ' . $text_format_checked . ' />
                    <label for="text_format">' . __( "Text Format Notifications", "gravityforms" ) . ' ' . gform_tooltip( "text_format", "", true ) . '</label>
                </td>
            </tr>';
        return $ui_settings;
    }

    function save_extra_settings( $notification, $form ) {
        $notification['enableAttachments'] = rgpost( 'enable_attachments' );
        $notification['textFormat'] = rgpost( 'text_format' );
        return $notification;
    }

    function notification_extras( $notification, $form, $entry ) {

        if ( rgar( $notification, 'textFormat') ) {
            $notification['message_format'] = 'text';
            GFCommon::log_debug( 'RWNotificationExtras() - changing message_format to text.' );
        }

        if ( rgar( $notification, 'enableAttachments') ) {

            $fileupload_fields = GFCommon::get_fields_by_type( $form, array( 'fileupload', 'post_image' ) );

            if ( ! is_array( $fileupload_fields ) ) {
                return $notification;
            }

            foreach( $fileupload_fields as $field ) {

                $url = $entry[$field['id']];

                if ( empty( $url ) ) {
                    continue;
                } elseif ( rgar( $field, 'multipleFiles' ) ) {
                    $uploaded_files = json_decode( $url, true );
                    foreach ( $uploaded_files as $uploaded_file ) {
                        $notification['attachments'][] = self::attach_file( $uploaded_file );
                    }
                } else {
                    if ( $field['type'] == 'post_image' ) {
                        $img = explode( '|:|', $url );
                        $url = str_replace( ' ', '%20', $img[0] );
                    }
                    $notification['attachments'][] = self::attach_file( $url );
                }

            }

        }

        return $notification;
    }

    function attach_file( $url ) {
        $attachment = str_replace( WP_CONTENT_URL, WP_CONTENT_DIR, $url );
        GFCommon::log_debug( 'RWNotificationExtras() - attaching the file: ' . print_r( $attachment, true ) );
        return $attachment;
    }

}
new RWNotificationExtras();