Add feed refresh link (#5)

- Feed updates and refresh use the same logic
- Fixed issue with logic around item add-or-update

src/public/index.php

@@ -9,7 +9,17 @@ include '../start.php';
 
 Security::verifyUser();
 
-$db     = Data::getConnection();
+$db = Data::getConnection();
+
+if (array_key_exists('refresh', $_GET)) {
+    $refreshResult = Feed::refreshAll($db);
+    if (array_key_exists('ok', $refreshResult)) {
+        add_info('All feeds refreshed successfully');
+    } else {
+        add_error(nl2br($refreshResult['error']));
+    }
+}
+
 $result = $db->query(<<<'SQL'
     SELECT item.id, item.title AS item_title, coalesce(item.updated_on, item.published_on) AS as_of,
            feed.title AS feed_title
@@ -21,7 +31,7 @@ $result = $db->query(<<<'SQL'
 $item   = $result ? $result->fetchArray(SQLITE3_ASSOC) : false;
 
 page_head('Welcome'); ?>
-<h1>Your Unread Items</h1>
+<h1>Your Unread Items &nbsp; <a href=/?refresh><small><small><em>(Refresh All Feeds)</em></small></small></a></h1>
 <article><?php
 if ($item) {
     while ($item) { ?>