gw-draft-resume-change-notice.php: Added new snippet that displays a notice when a user resumes draft from a new IP/UA.

gravity-forms/gw-draft-resume-change-notice.php

@@ -0,0 +1,66 @@
+<?php
+/**
+ * Gravity Wiz // Gravity Forms // Draft Resume Change Notice
+ * https://gravitywiz.com/
+ *
+ * Use this snippet to display a notice when the user resumes a draft from a different location, browser or device.
+ */
+add_filter( 'gform_get_form_filter', function( $form_markup, $form ) {
+
+	if ( empty( $_GET['gf_token'] ) ) {
+		return $form_markup;
+	}
+    $token = sanitize_text_field( wp_unslash( $_GET['gf_token'] ) );
+
+	global $wpdb;
+	$table = GFFormsModel::get_draft_submissions_table_name();
+	$draft = $wpdb->get_row(
+		$wpdb->prepare(
+			"SELECT form_id, ip, submission FROM {$table} WHERE uuid = %s",
+			$token
+		)
+	);
+
+	if ( ! $draft ) {
+		return $form_markup;
+	}
+
+	if ( (int) $form['id'] !== (int) $draft->form_id ) {
+		return $form_markup;
+	}
+
+	$submission_data = json_decode( $draft->submission, true );
+	$submission_data = is_array( $submission_data ) ? $submission_data : array();
+
+	$stored_user_agent = $submission_data['partial_entry']['user_agent'] ?? '';
+	$current_user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
+
+	$stored_ip   = $draft->ip ?? '';
+	$current_ip  = GFFormsModel::get_ip();
+
+	$ip_changed      = ( $stored_ip && $current_ip && $stored_ip !== $current_ip );
+	$browser_changed = ( $stored_user_agent && $current_user_agent && $stored_user_agent !== $current_user_agent );
+
+	if ( ! $ip_changed && ! $browser_changed ) {
+		return $form_markup;
+	}
+
+	// Configure Messages
+	$ip_changed_message      = "🌍 Your location has changed since last editing this draft";
+	$browser_changed_message = "💻 Your browser or device has changed since last editing this draft";
+	$both_changed_message    = "🔒 Your location and device have both changed since last editing this draft";
+
+	$message = $both_changed_message;
+	if ( $ip_changed && ! $browser_changed ) {
+		$message = $ip_changed_message;
+	} elseif ( $browser_changed && ! $ip_changed ) {
+		$message = $browser_changed_message;
+	}
+
+	$warning  = '<div style="background:#fff3cd;border:1px solid #ffc107;padding:15px;margin-bottom:15px;">';
+	$warning .= '<strong style="color:#856404;">' . esc_html( $message ) . '</strong>';
+	$warning .= '</div>';
+
+	return $warning . $form_markup;
+
+}, 10, 2 );