Automatically retrieve description for new bookmarks

If the option is enabled, it will try to find a meta tag containing
the page description and keywords, just like we do for the page title.
It will either look for regular meta tag or OpenGraph ones.

The option is disabled by default.

Note that keywords meta tags is mostly not used.

In `configure` template, the variable associated with this setting
is `$retrieve_description`.

Fixes #1302

2 files changed, 24 insertions, 0 deletions

diff --git a/tpl/default/configure.html b/tpl/default/configure.html
index 7a87c05d..83033624 100644
--- a/tpl/default/configure.html
+++ b/tpl/default/configure.html
@@ -215,6 +215,22 @@
       <div class="pure-g">
         <div class="pure-u-lg-{$ratioLabel} pure-u-{$ratioLabelMobile}">
           <div class="form-label">
+            <label for="retrieveDescription">
+              <span class="label-name">{'Automatically retrieve description for new bookmarks'|t}</span><br>
+              <span class="label-desc">{'Shaarli will try to retrieve the description from meta HTML headers'|t}</span>
+            </label>
+          </div>
+        </div>
+        <div class="pure-u-lg-{$ratioInput} pure-u-{$ratioInputMobile}">
+          <div class="form-input">
+            <input type="checkbox" name="retrieveDescription" id="retrieveDescription"
+                 {if="$retrieve_description"}checked{/if}/>
+          </div>
+        </div>
+      </div>
+      <div class="pure-g">
+        <div class="pure-u-lg-{$ratioLabel} pure-u-{$ratioLabelMobile}">
+          <div class="form-label">
             <label for="enableApi">
               <span class="label-name">{'Enable REST API'|t}</span><br>
               <span class="label-desc">{'Allow third party software to use Shaarli such as mobile application'|t}</span>
diff --git a/tpl/vintage/configure.html b/tpl/vintage/configure.html
index f1892fa1..160286a5 100644
--- a/tpl/vintage/configure.html
+++ b/tpl/vintage/configure.html
@@ -107,6 +107,14 @@
         </td>
       </tr>
       <tr>
+        <td valign="top"><b>Automatically retrieve description for new bookmarks:</b></td>
+        <td>
+          <input type="checkbox" name="retrieveDescription" id="retrieveDescription"
+                 {if="$retrieve_description"}checked{/if}/>
+          <label for="retrieveDescription">&nbsp;Shaarli will try to retrieve the description from meta HTML headers</label>
+        </td>
+      </tr>
+      <tr>
         <td valign="top"><b>Enable REST API</b></td>
         <td>
           <input type="checkbox" name="enableApi" id="enableApi"