From d0f215731db408a463257789d9497b20a4d26bab Mon Sep 17 00:00:00 2001
From: plegall <plg@piwigo.org>
Date: Tue, 23 Feb 2010 14:38:38 +0000
Subject: feature 1453 added: ability to check for uniqueness on filename. No
 change on the default behavior: uniqueness is set on md5sum.

git-svn-id: http://piwigo.org/svn/branches/2.0@4953 68402e56-0260-453c-a942-63ccdbb3a9ee
---
 include/config_default.inc.php |  4 +++
 include/ws_functions.inc.php   | 80 +++++++++++++++++++++++++++++++++---------
 ws.php                         |  3 +-
 3 files changed, 70 insertions(+), 17 deletions(-)

diff --git a/include/config_default.inc.php b/include/config_default.inc.php
index 5983c392c..822ef7c5e 100644
--- a/include/config_default.inc.php
+++ b/include/config_default.inc.php
@@ -322,6 +322,10 @@ $conf['default_redirect_method'] = 'http';
 // Define using double password type in admin's users management panel
 $conf['double_password_type_in_admin'] = false;
 
+// how should we check for unicity when adding a photo. Can be 'md5sum' or
+// 'filename'
+$conf['uniqueness_mode'] = 'md5sum';
+
 // +-----------------------------------------------------------------------+
 // |                               metadata                                |
 // +-----------------------------------------------------------------------+
diff --git a/include/ws_functions.inc.php b/include/ws_functions.inc.php
index bad46a12e..4b4f8e7fd 100644
--- a/include/ws_functions.inc.php
+++ b/include/ws_functions.inc.php
@@ -1204,11 +1204,20 @@ function ws_images_add($params, &$service)
   }
 
   // does the image already exists ?
+  if ('md5sum' == $conf['uniqueness_mode'])
+  {
+    $where_clause = "md5sum = '".$params['original_sum']."'";
+  }
+  if ('filename' == $conf['uniqueness_mode'])
+  {
+    $where_clause = "file = '".$params['original_filename']."'";
+  }
+  
   $query = '
 SELECT
     COUNT(*) AS counter
   FROM '.IMAGES_TABLE.'
-  WHERE md5sum = \''.$params['original_sum'].'\'
+  WHERE '.$where_clause.'
 ;';
   list($counter) = mysql_fetch_row(pwg_query($query));
   if ($counter != 0) {
@@ -1597,37 +1606,76 @@ function ws_tags_add($params, &$service)
 
 function ws_images_exist($params, &$service)
 {
+  global $conf;
+  
   if (!is_admin() or is_adviser())
   {
     return new PwgError(401, 'Access denied');
   }
 
-  // search among photos the list of photos already added, based on md5sum
-  // list
-  $md5sums = preg_split(
-    '/[\s,;\|]/',
-    $params['md5sum_list'],
-    -1,
-    PREG_SPLIT_NO_EMPTY
+  $split_pattern = '/[\s,;\|]/';
+
+  if ('md5sum' == $conf['uniqueness_mode'])
+  {
+    // search among photos the list of photos already added, based on md5sum
+    // list
+    $md5sums = preg_split(
+      $split_pattern,
+      $params['md5sum_list'],
+      -1,
+      PREG_SPLIT_NO_EMPTY
     );
 
-  $query = '
+    $query = '
 SELECT
     id,
     md5sum
   FROM '.IMAGES_TABLE.'
   WHERE md5sum IN (\''.implode("','", $md5sums).'\')
 ;';
-  $id_of_md5 = simple_hash_from_query($query, 'md5sum', 'id');
+    $id_of_md5 = simple_hash_from_query($query, 'md5sum', 'id');
 
-  $result = array();
+    $result = array();
 
-  foreach ($md5sums as $md5sum)
-  {
-    $result[$md5sum] = null;
-    if (isset($id_of_md5[$md5sum]))
+    foreach ($md5sums as $md5sum)
     {
-      $result[$md5sum] = $id_of_md5[$md5sum];
+      $result[$md5sum] = null;
+      if (isset($id_of_md5[$md5sum]))
+      {
+        $result[$md5sum] = $id_of_md5[$md5sum];
+      }
+    }
+  }
+  
+  if ('filename' == $conf['uniqueness_mode'])
+  {
+    // search among photos the list of photos already added, based on
+    // filename list
+    $filenames = preg_split(
+      $split_pattern,
+      $params['filename_list'],
+      -1,
+      PREG_SPLIT_NO_EMPTY
+    );
+
+    $query = '
+SELECT
+    id,
+    file
+  FROM '.IMAGES_TABLE.'
+  WHERE file IN (\''.implode("','", $filenames).'\')
+;';
+    $id_of_filename = simple_hash_from_query($query, 'file', 'id');
+
+    $result = array();
+
+    foreach ($filenames as $filename)
+    {
+      $result[$filename] = null;
+      if (isset($id_of_filename[$filename]))
+      {
+        $result[$filename] = $id_of_filename[$filename];
+      }
     }
   }
 
diff --git a/ws.php b/ws.php
index 11fce7aa3..6e73d4c89 100644
--- a/ws.php
+++ b/ws.php
@@ -257,7 +257,8 @@ function ws_addDefaultMethods( $arr )
     'pwg.images.exist',
     'ws_images_exist',
     array(
-      'md5sum_list'=> array(),
+      'md5sum_list'=> array('default' => null),
+      'filename_list' => array('default' => null),
       ),
     'check existence of a photo list'
     );
-- 
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