Make "Port" field optional

Author: SamuelTallet

autoload.php

@@ -1,7 +1,7 @@
 <?php
 
 if ( !file_exists($autoload_file = MPG_ABS_PATH . '/vendor/autoload.php') ) {
-    die('Install dependencies with `composer install` to run this script successfully.');
+    die('Run `composer install` to complete ' . MPG_APP_NAME . ' installation.');
 }
 
 $loader = require_once $autoload_file;

source/Controllers/LoginController.php

@@ -38,8 +38,6 @@ public function processFormData() : array {
 
         if ( isset($_POST['port']) && !empty($_POST['port']) ) {
             $_SESSION['mpg']['mongodb_port'] = $_POST['port'];
-        } else {
-            $errors[] = 'Port';
         }
 
         if ( isset($_POST['database']) && !empty($_POST['database']) ) {

source/Helpers/MongoDBHelper.php

@@ -50,7 +50,11 @@ private static function createClient() : Client {
         }
 
         $clientUri .= $_SESSION['mpg']['mongodb_host'];
-        $clientUri .= ':' . $_SESSION['mpg']['mongodb_port'];
+
+        if ( isset($_SESSION['mpg']['mongodb_port']) ) {
+            $clientUri .= ':' . $_SESSION['mpg']['mongodb_port'];
+        }
+        // When it's not defined: port defaults to 27017.
 
         if ( isset($_SESSION['mpg']['mongodb_database']) ) {
             $clientUri .= '/' . $_SESSION['mpg']['mongodb_database'];

static/js/mpg.login.js

@@ -60,10 +60,10 @@ MPG.eventListeners.addLoginButton = function() {
 
     document.getElementById('mpg-login-button').addEventListener('click', function(_event) {
 
-        if ( document.querySelector('input[name="host"]').value === '' 
-            || document.querySelector('input[name="port"]').value === '' )
-        {
+        if ( document.querySelector('input[name="host"]').value === '' ) {
+
             document.querySelector('.card').classList.add('apply-shake');
+            
         }
 
     });

views/login.tpl.php

@@ -79,7 +79,7 @@
                             <div class="input-group-prepend">
                                 <span class="input-group-text"><i class="fa fa-filter"></i></span>
                             </div>
-                            <input type="number" class="form-control" placeholder="Port" name="port" required>
+                            <input type="number" class="form-control" placeholder="Port" name="port">
                         </div>
 
                         <div class="input-group form-group">