Add catalog thumbnails for file placeholder, handle the first of multiple OP images being deleted

Thank you based lewdposter

templates/themes/catalog/theme.php

@@ -191,6 +191,28 @@
 			return $sql;
 		}
 
+		private function filepathForThumb($thumb_or_special, $path_when_file) {
+			global $config;
+
+			if ($thumb_or_special === 'deleted') {
+				return $config['root'] . $config['image_deleted'];
+			} else if ($thumb_or_special === 'spoiler') {
+				return $config['root'] . $config['spoiler_image'];
+			} else if ($thumb_or_special === 'file') {
+				// see twig_extension_filter
+				$ext   = mb_strtolower(mb_substr($path_when_file, mb_strrpos($path_when_file, '.') + 1));
+				$icons = $config['file_icons'];
+				// see templates/post/image.html
+				if (isset($icons[$ext])) {
+					return $config['root'] . sprintf($config['file_thumb'], $icons[$ext]);
+				} else {
+					return $config['root'] . sprintf($config['file_thumb'], $icons['default']);
+				}
+			} else {
+				return $config['uri_thumb'] . $thumb_or_special;
+			}
+		}
+
 		private function generateRecentPosts($threads) {
 			global $config, $board;
 
@@ -210,28 +232,23 @@
 				if (isset($post['files']) && $post['files']) {
 					$files = json_decode($post['files']);
 
-					if ($files[0]) {
-						if ($files[0]->file == 'deleted') {
-							if (count($files) > 1) {
-								foreach ($files as $file) {
-									if (($file == $files[0]) || ($file->file == 'deleted'))
-										continue;
-									$post['file'] = $config['uri_thumb'] . $file->thumb;
-								}
-
-								if (empty($post['file']))
-									$post['file'] = $config['image_deleted'];
-							} else {
-								$post['file'] = $config['image_deleted'];
+					if (isset($files[0]) && $files[0]) {
+						$foundone = false;
+						foreach ($files as $file) {
+							if ($file->file != 'deleted') {
+								$post['file'] = $this->filepathForThumb($file->thumb, $file->file);
+								$foundone = true;
+								break;
 							}
-						} else if($files[0]->thumb == 'spoiler') {
-							$post['file'] = '/' . $config['spoiler_image'];
-						} else {
-							$post['file'] = $config['uri_thumb'] . $files[0]->thumb;
 						}
+						if (!$foundone) {
+							$post['file'] = $this->filepathForThumb('deleted', null);
+						}
+					} else {
+						$post['file'] = $this->filepathForThumb('deleted', null);
 					}
 				} else {
-					$post['file'] = $config['root'] . $config['image_deleted'];
+					$post['file'] = $this->filepathForThumb('deleted', null);
 				}
 
 				if (empty($post['image_count']))