From 9646b7da22c4c6f3419bfe51431720dd622374d8 Mon Sep 17 00:00:00 2001
From: ArthurHoaro <arthur@hoa.ro>
Date: Wed, 3 Aug 2016 09:44:04 +0200
Subject: [PATCH] Save the update date in LinkDB and pass it to linklist
 templates

It can be used as a timestamp by templates under the key 'updated_timestamp'.
---
 application/LinkDB.php |  3 ++-
 index.php              | 12 +++++++++++-
 tpl/linklist.html      | 11 ++++++++++-
 3 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/application/LinkDB.php b/application/LinkDB.php
index d80434bf..de9e73b0 100644
--- a/application/LinkDB.php
+++ b/application/LinkDB.php
@@ -12,8 +12,9 @@
  *
  * Available keys:
  *  - description: description of the entry
- *  - linkdate: date of the creation of this entry, in the form YYYYMMDD_HHMMSS
+ *  - linkdate: creation date of this entry, format: YYYYMMDD_HHMMSS
  *              (e.g.'20110914_192317')
+ *  - updated:  last modification date of this entry, format: YYYYMMDD_HHMMSS
  *  - private:  Is this link private? 0=no, other value=yes
  *  - tags:     tags attached to this entry (separated by spaces)
  *  - title     Title of the link
diff --git a/index.php b/index.php
index 55b12adc..d425afda 100644
--- a/index.php
+++ b/index.php
@@ -1227,6 +1227,9 @@ function renderPage($conf, $pluginManager)
     // -------- User clicked the "Save" button when editing a link: Save link to database.
     if (isset($_POST['save_edit']))
     {
+        $linkdate = $_POST['lf_linkdate'];
+        $updated = isset($LINKSDB[$linkdate]) ? strval(date('Ymd_His')) : false;
+
         // Go away!
         if (! tokenOk($_POST['token'])) {
             die('Wrong token.');
@@ -1237,7 +1240,7 @@ function renderPage($conf, $pluginManager)
         $tags = preg_replace('/(^| )\-/', '$1', $tags);
         // Remove duplicates.
         $tags = implode(' ', array_unique(explode(' ', $tags)));
-        $linkdate = $_POST['lf_linkdate'];
+
         $url = trim($_POST['lf_url']);
         if (! startsWith($url, 'http:') && ! startsWith($url, 'https:')
             && ! startsWith($url, 'ftp:') && ! startsWith($url, 'magnet:')
@@ -1252,6 +1255,7 @@ function renderPage($conf, $pluginManager)
             'description' => $_POST['lf_description'],
             'private' => (isset($_POST['lf_private']) ? 1 : 0),
             'linkdate' => $linkdate,
+            'updated' => $updated,
             'tags' => str_replace(',', ' ', $tags)
         );
         // If title is empty, use the URL as title.
@@ -1696,6 +1700,12 @@ function buildLinkList($PAGE,$LINKSDB, $conf, $pluginManager)
         $link['class'] = $link['private'] == 0 ? $classLi : 'private';
         $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['linkdate']);
         $link['timestamp'] = $date->getTimestamp();
+        if (! empty($link['updated'])) {
+            $date = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $link['updated']);
+            $link['updated_timestamp'] = $date->getTimestamp();
+        } else {
+            $link['updated_timestamp'] = '';
+        }
         $taglist = explode(' ', $link['tags']);
         uasort($taglist, 'strcasecmp');
         $link['taglist'] = $taglist;
diff --git a/tpl/linklist.html b/tpl/linklist.html
index 2316f145..9979f12a 100644
--- a/tpl/linklist.html
+++ b/tpl/linklist.html
@@ -89,7 +89,16 @@
                 <br>
                 {if="$value.description"}<div class="linkdescription">{$value.description}</div>{/if}
                 {if="!$hide_timestamps || isLoggedIn()"}
-                    <span class="linkdate" title="Permalink"><a href="?{$value.linkdate|smallHash}">{function="strftime('%c', $value.timestamp)"} - permalink</a> - </span>
+                    {$updated=$value.updated_timestamp ? 'Edited: '. strftime('%c', $value.updated_timestamp) : 'Permalink'}
+                    <span class="linkdate" title="Permalink">
+                        <a href="?{$value.linkdate|smallHash}">
+                            <span title="{$updated}">
+                                {function="strftime('%c', $value.timestamp)"}
+                                {if="$value.updated_timestamp"}*{/if}
+                            </span>
+                            - permalink
+                        </a> -
+                    </span>
                 {else}
                     <span class="linkdate" title="Short link here"><a href="?{$value.shorturl}">permalink</a> - </span>
                 {/if}
-- 
2.41.0