fix bug with cached comment stats

themes/hugo-mastodon-comments/static/comments/getcomments.php

@@ -5,7 +5,7 @@ require_once 'config.php';
 $instance = $config['mastodon-instance'];
 $uid = $config['user-id'];
 $searchurl = $config['search-url'];
-$search = isset($_GET['search']) ? $_GET['search'] : '';
+$search = isset($_GET['search']) ? strtolower($_GET['search']) : '';
 $debug_on = $config['debug'];
 /* cache files */
 $ctt = $config['cache_toots'];
@@ -40,6 +40,14 @@ function write_db($db, $data, $id) {
   $encoded = json_encode($file, JSON_PRETTY_PRINT);
   file_put_contents($db, $encoded, LOCK_EX);
 }
+/* delete file */
+function delete_db($db, $id) {
+  // if $id is given, it's a comments file. Replace placeholder in filename
+  if ($id) {
+    $db = str_replace('%id', $id, $db);
+  }
+  unlink($db);
+}
 /* access data from file */
 function read_db($db, &$data, $cachetime, &$cachebreak, $id) {
   // if $id is given, it's a comments file. Replace placeholder in filename
@@ -185,11 +193,19 @@ if ($cachebreak) {
   debug("Toots cache is up-to-date");
 }
 
-/* prepare empty $result array with structure */
-$result = ['comments' => [], 'stats' => ['reblogs' => 0, 'favs' => 0, 'replies' => 0, 'url' => '', 'root' => 0]];
+// create empty $result
+$result_empty = ['comments' => [], 'stats' => ['reblogs' => 0, 'favs' => 0, 'replies' => 0, 'url' => '', 'root' => 0]];
+$result = $result_empty;
 
 /* check if URL from $search exists in $toots */
-$id = array_keys(array_column($toots, 'url'), strtolower($search));
+$id = array_keys(
+  array_filter(
+    array_column($toots, 'url'),
+    function ($value) use ($search) {
+      return (strpos($value, $search) !== false);
+    }
+  )
+);
 if (empty($id)) {
   debug("Blog URL \"$search\" has not been found");
 } else {
@@ -202,6 +218,11 @@ if (empty($id)) {
 
   if ($cachebreak) {
     debug("Comments cache for $id outdated. Checking for new comments");
+    // delete old cache file, otherwise the stats would add up
+    delete_db($dbc, $id);
+    // re-create empty $result and new cache file
+    $result = $result_empty;
+    read_db($dbc, $result, $ctc, $cachebreak, $id);
     /* Extract comments and stats from toot */
     tootContext($instance, $id, $result);
     tootStats($instance, $id, $result);