Suggest account number option

system/templates/account.create.html.twig

@@ -34,6 +34,9 @@
 												<tr>
 													<td class="LabelV" style="width: 150px">
 														<span{% if errors.account is defined %} class="red"{% endif %}>Account {% if constant('USE_ACCOUNT_NAME') %}Name{% else %}Number{% endif %}:</span>
+														{% if not constant('USE_ACCOUNT_NAME') %}
+														<div id="SuggestAccountNumber">[<a href="#">suggest number</a>]</div>
+														{% endif %}
 													</td>
 													<td>
 														<input type="text" name="account" id="account_input" size="30" maxlength="{% if constant('USE_ACCOUNT_NAME') %}30{% else %}10{% endif %}" value="{{ account }}" autofocus/>
@@ -336,3 +339,8 @@
 </form>
 {{ hook('HOOK_ACCOUNT_CREATE_AFTER_FORM') }}
 <script type="text/javascript" src="tools/check_name.js"></script>
+<style>
+	#SuggestAccountNumber {
+		font-size: 7pt;
+	}
+</style>

system/templates/account.create.js.html.twig

@@ -20,6 +20,9 @@
 		$('#password2').blur(function() {
 			checkPassword();
 		});
+		$('#SuggestAccountNumber a').click(function (event) {
+			generateAccountNumber(event);
+		});
 	});
 
 	function updateFlag()
@@ -192,4 +195,18 @@
 
 		lastSend = timeNow;
 	}
+
+	function generateAccountNumber(event)
+	{
+		event.preventDefault();
+		$.getJSON("tools/generate_account_number.php", { uid: Math.random() },
+			function(data){
+				if(data.hasOwnProperty('success')) {
+					$('#account_input').val(data.success);
+				}
+			}
+		);
+
+		setTimeout(checkAccount, 1000);
+	}
 </script>

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();
+}