web service: added method to query search elements

picture: small correction on my last commit
monthly calendar nice view: always use getimagesize instead of guessing the size
query search: improved results (filename is searched separately) and sometimes less sql queries than before

git-svn-id: http://piwigo.org/svn/trunk@1837 68402e56-0260-453c-a942-63ccdbb3a9ee

4 files changed, 194 insertions, 64 deletions

diff --git a/include/calendar_monthly.class.php b/include/calendar_monthly.class.php
index 0dfdbcf63..c7822394b 100644
--- a/include/calendar_monthly.class.php
+++ b/include/calendar_monthly.class.php
@@ -1,7 +1,7 @@
 <?php
 // +-----------------------------------------------------------------------+
 // | PhpWebGallery - a PHP based picture gallery                           |
-// | Copyright (C) 2003-2006 PhpWebGallery Team - http://phpwebgallery.net |
+// | Copyright (C) 2003-2007 PhpWebGallery Team - http://phpwebgallery.net |
 // +-----------------------------------------------------------------------+
 // | file          : $Id$
 // | last update   : $Date$
@@ -438,14 +438,14 @@ SELECT id, file,tn_ext,path, width, height, DAYOFWEEK('.$this->date_field.')-1 a
       }
       else
       {
-        // first try to guess thumbnail size
+/*        // first try to guess thumbnail size
         if ( !empty($items[$day]['width']) )
         {
           $tn_size = get_picture_size(
                  $items[$day]['width'], $items[$day]['height'],
                  $conf['tn_width'], $conf['tn_height'] );
         }
-        else
+        else*/
         {// item not an image (tn is either mime type or an image)
           $thumb = get_thumbnail_path($items[$day]);
           $tn_size = @getimagesize($thumb);
diff --git a/include/config_default.inc.php b/include/config_default.inc.php
index 110accd46..cd02ce597 100644
--- a/include/config_default.inc.php
+++ b/include/config_default.inc.php
@@ -115,9 +115,7 @@ $conf['calendar_show_empty'] = true;
 // width and the height of a cell in the monthly calendar when viewing a
 // given month. a value of 0 means that the pretty view is not shown.
 // a good suggestion would be to have the width and the height equal
-// and smaller than tn_width and tn_height. NOTE THAT tn_width AND tn_height
-// MUST CORRESPOND APPROXIMATIVELY TO YOUR REAL THUMBNAIL SIZE, OTHERWISE
-// THE IMAGES WILL NOT SHOW CORRECTLY
+// and smaller than tn_width and tn_height.
 $conf['calendar_month_cell_width'] =80;
 $conf['calendar_month_cell_height']=80;
 
diff --git a/include/functions_search.inc.php b/include/functions_search.inc.php
index 24b676e1f..1f7469021 100644
--- a/include/functions_search.inc.php
+++ b/include/functions_search.inc.php
@@ -2,9 +2,8 @@
 // +-----------------------------------------------------------------------+
 // | PhpWebGallery - a PHP based picture gallery                           |
 // | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
-// | Copyright (C) 2003-2006 PhpWebGallery Team - http://phpwebgallery.net |
+// | Copyright (C) 2003-2007 PhpWebGallery Team - http://phpwebgallery.net |
 // +-----------------------------------------------------------------------+
-// | branch        : BSF (Best So Far)
 // | file          : $Id$
 // | last update   : $Date$
 // | last modifier : $Author$
@@ -301,40 +300,18 @@ function get_qsearch_like_clause($q, $field)
  */
 function get_quick_search_results($q)
 {
-  global $user, $page, $filter;
+  global $page;
   $search_results = array();
-
-  // first search tag names corresponding to the query $q. we could also search
-  // tags later during the big join, but for the sake of the performance and
-  // because tags have only a simple name we do it separately
-  $q_like_clause = get_qsearch_like_clause($q, 'CONVERT(name, CHAR)' );
-  $by_tag_weights=array();
-  if (!empty($q_like_clause))
+  $q = trim($q);
+  if (empty($q))
   {
-    $query = '
-SELECT id
-  FROM '.TAGS_TABLE.'
-  WHERE '.$q_like_clause;
-    $tag_ids = array_from_query( $query, 'id');
-    if (!empty($tag_ids))
-    { // we got some tags
-      $query = '
-SELECT image_id, COUNT(tag_id) AS q
-  FROM '.IMAGE_TAG_TABLE.'
-  WHERE tag_id IN ('.implode(',',$tag_ids).')
-  GROUP BY image_id';
-      $result = pwg_query($query);
-      while ($row = mysql_fetch_assoc($result))
-      { // weight is important when sorting images by relevance
-        $by_tag_weights[(int)$row['image_id']] = $row['q'];
-      }
-    }
+    $search_results['items'] = array();
+    return $search_results;
   }
-
   // prepare the big join on images, comments and categories
   $query = '
 SELECT
-  i.id, i.file, CAST( CONCAT_WS(" ",
+  i.id, CAST( CONCAT_WS(" ",
     IFNULL(i.name,""),
     IFNULL(i.comment,""),
     IFNULL(GROUP_CONCAT(DISTINCT co.content),""),
@@ -356,7 +333,7 @@ FROM (
       (
         'forbidden_categories' => 'category_id',
         'visible_categories' => 'category_id',
-        'visible_images' => 'ic.image_id'
+        'visible_images' => 'i.id'
       ),
     'WHERE'
   ).'
@@ -365,35 +342,75 @@ GROUP BY i.id';
   $query = 'SELECT id, MATCH(ft) AGAINST( "'.$q.'" IN BOOLEAN MODE) AS q FROM ('.$query.') AS Y
 WHERE MATCH(ft) AGAINST( "'.$q.'" IN BOOLEAN MODE)';
 
-  //also inlcude the file name (but avoid full text which is slower because
-  //the filename in pwg doesn't have spaces so full text is meaningless anyway)
-  $q_like_clause = get_qsearch_like_clause($q, 'file' );
-  if (! empty($q_like_clause) )
-  {
-    $query .= ' OR '.$q_like_clause;
-  }
-
   $by_weights=array();
   $result = pwg_query($query);
   while ($row = mysql_fetch_array($result))
-  {
-    $by_weights[(int)$row['id']] = $row['q'] ? $row['q'] : 0;
+  { // weight is important when sorting images by relevance
+    if ($row['q'])
+    {
+      $by_weights[(int)$row['id']] =  2*$row['q'];
+    }
   }
 
-  // finally merge the results (tags and big join) sorted by "relevance"
-  foreach ( $by_weights as $image=>$w )
+  $permissions_checked = true;
+  // now search the file name separately (not done in full text because slower 
+  // and the filename in pwg doesn't have spaces so full text is meaningless )
+  $q_like_clause = get_qsearch_like_clause($q, 'file' );
+  if (!empty($q_like_clause))
   {
-    $by_tag_weights[$image] = 2*$w+ (isset($by_tag_weights[$image])?$by_tag_weights[$image]:0);
+    $query = '
+SELECT id
+  FROM '.IMAGES_TABLE.'
+  WHERE '.$q_like_clause.
+      get_sql_condition_FandF
+      (
+        array
+          (
+            'visible_images' => 'id'
+          ),
+        'AND'
+      );
+    $result = pwg_query($query);
+    while ($row = mysql_fetch_assoc($result))
+    { // weight is important when sorting images by relevance
+      $id=(int)$row['id'];
+      @$by_weights[$id] += 2;
+      $permissions_checked = false;
+    }
   }
 
-  //at this point, found images might contain images not allowed for the user
-  if ( empty($by_tag_weights) or isset($page['super_order_by']) )
+  // now search tag names corresponding to the query $q. we could have searched
+  // tags earlier during the big join, but for the sake of the performance and
+  // because tags have only a simple name we do it separately
+  $q_like_clause = get_qsearch_like_clause($q, 'CONVERT(name, CHAR)' );
+  if (!empty($q_like_clause))
   {
-    // no aditionnal query here for permissions (will be done by section_init
-    // while sorting items as the user requested it)
-    $search_results['items'] = array_keys($by_tag_weights);
+    $query = '
+SELECT id
+  FROM '.TAGS_TABLE.'
+  WHERE '.$q_like_clause;
+    $tag_ids = array_from_query( $query, 'id');
+    if (!empty($tag_ids))
+    { // we got some tags
+      $query = '
+SELECT image_id, COUNT(tag_id) AS q
+  FROM '.IMAGE_TAG_TABLE.'
+  WHERE tag_id IN ('.implode(',',$tag_ids).')
+  GROUP BY image_id';
+      $result = pwg_query($query);
+      while ($row = mysql_fetch_assoc($result))
+      { // weight is important when sorting images by relevance
+        $image_id=(int)$row['image_id'];
+        @$by_weights[$image_id] += $row['q'];
+        $permissions_checked = false;
+      }
+    }
   }
-  else
+
+  //at this point, found images might contain images not allowed for the user
+  if ( !$permissions_checked
+       and !empty($by_weights)
+       and !isset($page['super_order_by']) )
   {
     // before returning the result "as is", make sure the user has the
     // permissions for every item
@@ -401,25 +418,28 @@ WHERE MATCH(ft) AGAINST( "'.$q.'" IN BOOLEAN MODE)';
 SELECT DISTINCT(id)
   FROM '.IMAGES_TABLE.'
     INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON id = ic.image_id
-  WHERE id IN ('.implode(',', array_keys($by_tag_weights) ).')
+  WHERE id IN ('.implode(',', array_keys($by_weights) ).')
 '.get_sql_condition_FandF
   (
     array
       (
         'forbidden_categories' => 'category_id',
         'visible_categories' => 'category_id',
-        'visible_images' => 'ic.image_id'
+        'visible_images' => 'id'
       ),
     'AND'
   );
     $allowed_image_ids = array_from_query( $query, 'id');
-    $by_tag_weights = array_intersect_key($by_tag_weights, array_flip($allowed_image_ids));
-    arsort($by_tag_weights, SORT_NUMERIC);
-    $search_results = array(
-          'items'=>array_keys($by_tag_weights),
-          'as_is'=>1
-        );
+    $by_weights = array_intersect_key($by_weights, array_flip($allowed_image_ids));
+    $permissions_checked = true;
+  }
+  arsort($by_weights, SORT_NUMERIC);
+  if ( $permissions_checked )
+  {
+    $search_results['as_is']=1;
   }
+  
+  $search_results['items'] = array_keys($by_weights);
   return $search_results;
 }
 
diff --git a/include/ws_functions.inc.php b/include/ws_functions.inc.php
index 1c71a6900..01e749d6f 100644
--- a/include/ws_functions.inc.php
+++ b/include/ws_functions.inc.php
@@ -603,6 +603,118 @@ SELECT COUNT(rate) AS count
   return new PwgNamedStruct('image',$ret, null, array('name','comment') );
 }
 
+/**
+ * returns a list of elements corresponding to a query search
+ */
+function ws_images_search($params, &$service)
+{
+  global $page;
+  $images = array();
+  include_once( PHPWG_ROOT_PATH .'include/functions_search.inc.php' );
+  include_once(PHPWG_ROOT_PATH.'include/functions_picture.inc.php');
+
+  $where_clauses = ws_std_image_sql_filter( $params );
+  $order_by = ws_std_image_sql_order($params);
+
+  if ( !empty($where_clauses) and !empty($order_by) )
+  {
+    $page['super_order_by']=1; // quick_search_result might be faster
+  }
+  $search_result = get_quick_search_results($params['query']);
+
+  global $image_ids; //needed for sorting by rank (usort)
+  if ( ( !isset($search_result['as_is'])
+      or !empty($where_clauses)
+      or !empty($order_by) )
+      and !empty($search_result['items']) )
+  {
+    $where_clauses[] = 'id IN ('
+        .wordwrap(implode(', ', $search_result['items']), 80, "\n")
+        .')';
+    $where_clauses[] = get_sql_condition_FandF(
+        array
+          (
+            'forbidden_categories' => 'category_id',
+            'visible_categories' => 'category_id',
+            'visible_images' => 'id'
+          ),
+        '', true
+      );
+    $query = '
+SELECT DISTINCT id FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON id=image_id
+  WHERE '.implode('
+    AND ', $where_clauses);
+    if (!empty($order_by))
+    {
+      $query .= '
+  ORDER BY '.$order_by;
+    }
+    $image_ids = array_from_query($query, 'id');
+    global $ranks;
+    $ranks = array_flip( $search_result['items'] );
+    usort(
+      $image_ids,
+      create_function('$i1,$i2', 'global $ranks; return $ranks[$i1]-$ranks[$i2];')
+    );
+    unset ($ranks);
+  }
+  else
+  {
+    $image_ids = $search_result['items'];
+  }
+  
+  $image_ids = array_slice($image_ids,
+    $params['page']*$params['per_page'],
+    $params['per_page'] );
+
+  if ( count($image_ids) )
+  {
+    $query = '
+SELECT * FROM '.IMAGES_TABLE.'
+  WHERE id IN ('
+        .wordwrap(implode(', ', $image_ids), 80, "\n")
+        .')';
+
+    $result = pwg_query($query);
+    while ($row = mysql_fetch_assoc($result))
+    {
+      $image = array();
+      foreach ( array('id', 'width', 'height', 'hit') as $k )
+      {
+        if (isset($row[$k]))
+        {
+          $image[$k] = (int)$row[$k];
+        }
+      }
+      foreach ( array('name', 'file') as $k )
+      {
+        $image[$k] = $row[$k];
+      }
+      $image = array_merge( $image, ws_std_get_urls($row) );
+      array_push($images, $image);
+    }
+
+    $image_ids = array_flip($image_ids);
+    usort(
+        $images,
+        create_function('$i1,$i2', 'global $image_ids; return $image_ids[$i1["id"]]-$image_ids[$i2["id"]];')
+      );
+  }
+
+
+  return array( 'images' =>
+    array (
+      WS_XML_ATTRIBUTES =>
+        array(
+            'page' => $params['page'],
+            'per_page' => $params['per_page'],
+            'count' => count($images)
+          ),
+       WS_XML_CONTENT => new PwgNamedArray($images, 'image',
+          array('id', 'tn_url', 'element_url', 'file','width','height','hit') )
+      )
+    );
+}
 
 /**
  * perform a login (web service method)