Add date for RSS feeds (#4)

- First cut of user message add/display

src/start.php

@@ -12,6 +12,17 @@ require 'user-config.php';
 
 Data::ensureDb();
 
+/**
+ * Add a message to be displayed at the top of the page
+ *
+ * @param string $level The level (type) of the message
+ * @param string $message The message itself
+ */
+function add_message(string $level, string $message): void {
+    if (!array_key_exists('USER_MSG', $_REQUEST)) $_REQUEST['USER_MSG'] = array();
+    $_REQUEST['USER_MSG'][] = ['level' => $level, 'message' => $message];
+}
+
 /**
  * Render the page title
  * @param string $title The title of the page being displayed
@@ -29,14 +40,19 @@ function page_head(string $title): void {
     <div><?php
         if (array_key_exists('FRC_USER_ID', $_REQUEST)) {
             echo '<a href=/feed?id=new>Add Feed</a>';
-            if ($_REQUEST['FRC_USER_EMAIL'] != 'solouser@example.com') {
-                echo " | {$_REQUEST['FRC_USER_EMAIL']}";
-            }
+            if ($_REQUEST['FRC_USER_EMAIL'] != 'solouser@example.com') echo " | {$_REQUEST['FRC_USER_EMAIL']}";
         } ?>
     </div>
 </header>
-<main hx-target=this>
-<?php
+<main hx-target=this><?php
+    if (array_key_exists('USER_MSG', $_REQUEST)) {
+        foreach ($_REQUEST['USER_MSG'] as $msg) { ?>
+            <div>
+                <?=$msg['level'] == 'INFO' ? '' : "<strong>{$msg['level']}</strong><br>"?>
+                <?=$msg['message']?>
+            </div><?php
+        }
+    }
 }
 
 /**