From 33584b8423012e3f4464e78bded67fcf1fdaf7ff Mon Sep 17 00:00:00 2001
From: logmanoriginal <logmanoriginal@users.noreply.github.com>
Date: Sat, 10 Sep 2016 00:34:25 +0200
Subject: [PATCH] [HttpCachingBridgeAbstract] General cleanup

- Remove buildCacheFilePath -> Single use, so no real purpose
- Simplify debug messages
- Cleanup documentation
---
 lib/HttpCachingBridgeAbstract.php | 20 +++++++-------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/lib/HttpCachingBridgeAbstract.php b/lib/HttpCachingBridgeAbstract.php
index 1000704..364606e 100644
--- a/lib/HttpCachingBridgeAbstract.php
+++ b/lib/HttpCachingBridgeAbstract.php
@@ -2,11 +2,8 @@
 require_once(__DIR__ . '/BridgeInterface.php');
 /**
  * Extension of BridgeAbstract allowing caching of files downloaded over http.
- * TODO allow file cache invalidation by touching files on access, and removing
- * files/directories which have not been touched since ... a long time
  */
 abstract class HttpCachingBridgeAbstract extends BridgeAbstract {
-
     /**
      * Maintain locally cached versions of pages to download, to avoid multiple downloads.
      * @param url url to cache
@@ -14,25 +11,26 @@ abstract class HttpCachingBridgeAbstract extends BridgeAbstract {
      * @return content of the file as string
      */
     public function get_cached($url, $duration = 86400){
-        $filepath = $this->buildCacheFilePath($url);
+        $this->debugMessage('Caching url ' . $url . ', duration ' . $duration);
+
+        $filepath = __DIR__ . '/../cache/pages/' . sha1($url) . '.cache';
+        $this->debugMessage('Cache file ' . $filepath);
 
         if(file_exists($filepath) && filectime($filepath) < time() - $duration){
-            $this->debugMessage('Cache file ' . $filepath . ' exceeded duration of ' . $duration . ' seconds.');
             unlink ($filepath);
             $this->debugMessage('Cached file deleted: ' . $filepath);
         }
 
         if(file_exists($filepath)){
-            $this->debugMessage('loading cached file from ' . $filepath . ' for page at url ' . $url);
-            // TODO touch file and its parent, and try to do neighbour deletion
+            $this->debugMessage('Loading cached file ' . $filepath);
             touch($filepath);
             $content = file_get_contents($filepath);
         } else {
-            $this->debugMessage('we have no local copy of ' . $url . ' Downloading to ' . $filepath);
+            $this->debugMessage('Caching ' . $url . ' to ' . $filepath);
             $dir = substr($filepath, 0, strrpos($filepath, '/'));
 
             if(!is_dir($dir)){
-                $this->debugMessage('creating directories for ' . $dir);
+                $this->debugMessage('Creating directory ' . $dir);
                 mkdir($dir, 0777, true);
             }
 
@@ -44,8 +42,4 @@ abstract class HttpCachingBridgeAbstract extends BridgeAbstract {
 
         return str_get_html($content);
     }
-
-    private function buildCacheFilePath($url){
-        return __DIR__ . '/../cache/pages/' . sha1($url) . '.cache';
-    }
 }