From d664544a2ef6eb580c22041cc9b02574dd369108 Mon Sep 17 00:00:00 2001
From: Kevin P <wazari972@gmail.com>
Date: Sun, 4 Oct 2015 13:27:39 +0200
Subject: [PATCH] allow setting custom thumbnails

---
 index.php         | 12 +++++++-----
 tpl/editlink.html |  3 ++-
 tpl/linklist.html |  2 +-
 3 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/index.php b/index.php
index c102e4222..6e9cfa70c 100644
--- a/index.php
+++ b/index.php
@@ -1104,7 +1104,7 @@ function showDailyRSS()
         {
             $l = $LINKSDB[$linkdate];
             $l['formatedDescription']=nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($l['description']))));
-            $l['thumbnail'] = thumbnail($l['url']);
+            $l['thumbnail'] = thumbnail($l['url'], isset($l['thumb']) ? $l['thumb'] : False);
             $l['localdate']=linkdate2locale($l['linkdate']);
             if (startsWith($l['url'],'?')) $l['url']=indexUrl().$l['url'];  // make permalink URL absolute
             $links[$linkdate]=$l;
@@ -1152,7 +1152,7 @@ function showDaily()
         uasort($taglist, 'strcasecmp');
         $linksToDisplay[$key]['taglist']=$taglist;
         $linksToDisplay[$key]['formatedDescription']=nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description']))));
-        $linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
+        $linksToDisplay[$key]['thumbnail'] = thumbnail($link['url'], isset($link['thumb']) ? $link['thumb'] : False);
     }
 
     /* We need to spread the articles on 3 columns.
@@ -1232,7 +1232,7 @@ function renderPage()
         foreach($links as $link)
         {
             $permalink='?'.htmlspecialchars(smallhash($link['linkdate']),ENT_QUOTES);
-            $thumb=lazyThumbnail($link['url'],$permalink);
+            $thumb=lazyThumbnail($link['url'], isset($link['thumb']) ? $link['thumb'] : False);
             if ($thumb!='') // Only output links which have a thumbnail.
             {
                 $link['thumbnail']=$thumb; // Thumbnail HTML code.
@@ -1482,10 +1482,11 @@ function renderPage()
         $tags = trim(preg_replace('/\s\s+/',' ', $_POST['lf_tags'])); // Remove multiple spaces.
         $linkdate=$_POST['lf_linkdate'];
         $url = trim($_POST['lf_url']);
+        $thumb = trim($_POST['lf_thumb']);        
         if (!startsWith($url,'http:') && !startsWith($url,'https:') && !startsWith($url,'ftp:') && !startsWith($url,'magnet:') && !startsWith($url,'?'))
             $url = 'http://'.$url;
         $link = array('title'=>trim($_POST['lf_title']),'url'=>$url,'description'=>trim($_POST['lf_description']),'private'=>(isset($_POST['lf_private']) ? 1 : 0),
-                      'linkdate'=>$linkdate,'tags'=>str_replace(',',' ',$tags));
+                      'linkdate'=>$linkdate,'tags'=>str_replace(',',' ',$tags),'thumb'=>$thumb);
         if ($link['title']=='') $link['title']=$link['url']; // If title is empty, use the URL as title.
         $LINKSDB[$linkdate] = $link;
         $LINKSDB->savedb(); // save to disk
@@ -1885,7 +1886,8 @@ function buildLinkList($PAGE,$LINKSDB)
 function computeThumbnail($url,$href=false)
 {
     if (!$GLOBALS['config']['ENABLE_THUMBNAILS']) return array();
-    if ($href==false) $href=$url;
+    if ($href!=false and !empty($href)) $url=$href;
+    
 
     // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
     // (eg. http://www.youtube.com/watch?v=spVypYk4kto --->  http://img.youtube.com/vi/spVypYk4kto/default.jpg )
diff --git a/tpl/editlink.html b/tpl/editlink.html
index 4a2c30cc4..0e62e84a1 100644
--- a/tpl/editlink.html
+++ b/tpl/editlink.html
@@ -16,6 +16,7 @@
 	        <i>Title</i><br><input type="text" name="lf_title" value="{$link.title|htmlspecialchars}" style="width:100%"><br>
 	        <i>Description</i><br><textarea name="lf_description" rows="4" cols="25" style="width:100%">{$link.description|htmlspecialchars}</textarea><br>
 	        <i>Tags</i><br><input type="text" id="lf_tags" name="lf_tags" value="{$link.tags|htmlspecialchars}" style="width:100%"><br>
+		<i>Thumbnail</i><br><input type="text" name="lf_thumb" value="{function="isset($link['thumb']) ? htmlspecialchars($link['thumb']) : """}" style="width:100%"><br>
 	        {if condition="($link_is_new && $GLOBALS['privateLinkByDefault']==true) || $link.private == true"}
             <input type="checkbox" checked="checked" name="lf_private" id="lf_private">
             &nbsp;<label for="lf_private"><i>Private</i></label><br>
@@ -41,4 +42,4 @@
 </script>
 {/if}
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/tpl/linklist.html b/tpl/linklist.html
index ddc38cb0a..a1893f50e 100644
--- a/tpl/linklist.html
+++ b/tpl/linklist.html
@@ -31,7 +31,7 @@
         {loop="links"}
         <li{if="$value.class"} class="{$value.class}"{/if}>
             <a name="{$value.linkdate|smallHash}" id="{$value.linkdate|smallHash}"></a>
-            <div class="thumbnail">{$value.url|thumbnail}</div>
+            <div class="thumbnail">{function="thumbnail($value['url'], isset($value['thumb']) ? $value['thumb'] : False)"}</div>
             <div class="linkcontainer">
                 {if="isLoggedIn()"}
                     <div class="linkeditbuttons">