Suggest account number option

tools/generate_account_number.php

@@ -0,0 +1,54 @@
+<?php
+/**
+ * Account Number Generator
+ * Returns json with result
+ *
+ * @package   MyAAC
+ * @author    Slawkens <slawkens@gmail.com>
+ * @copyright 2021 MyAAC
+ * @link      https://my-aac.org
+ */
+
+// we need some functions
+require '../common.php';
+require SYSTEM . 'functions.php';
+require SYSTEM . 'init.php';
+
+if(USE_ACCOUNT_NAME) {
+	return;
+}
+
+$hasNumberColumn = $db->hasColumn('accounts', 'number');
+do {
+	$length = 10;
+	$min = (int)(1 . str_repeat(0, $length - 1));
+	$max = (int)str_repeat(9, $length);
+
+	try {
+		$number = random_int($min, $max);
+	} catch (Exception $e) {
+		error_('');
+	}
+
+	$query = $db->query('SELECT `id` FROM `accounts` WHERE `' . ($hasNumberColumn ? 'number' : 'id') . '` = ' . $db->quote($number));
+} while($query->rowCount() >= 1);
+
+success_($number);
+
+/**
+ * Output message & exit.
+ *
+ * @param string $desc Description
+ */
+function success_($desc) {
+	echo json_encode([
+		'success' => $desc
+	]);
+	exit();
+}
+function error_($desc) {
+	echo json_encode([
+		'error' => $desc
+	]);
+	exit();
+}