search MVC reorganized

[living-lab-site.git] / application / models / videos_model.php

diff --git a/application/models/videos_model.php b/application/models/videos_model.php
index 922efd4..69e7328 100644 (file)
--- a/application/models/videos_model.php
+++ b/application/models/videos_model.php
@@ -7,7 +7,7 @@
  * @author             Călin-Andrei Burloiu
  */
 class Videos_model extends CI_Model {
-       private $db = NULL;
+       public $db = NULL;
        
        public function __construct()
        {
@@ -16,8 +16,6 @@ class Videos_model extends CI_Model {
                        $this->load->library('singleton_db');
                        $this->db = $this->singleton_db->connect();
                }
-               
-               $this->load->helper('url');
        }
        
        /**
@@ -85,7 +83,7 @@ class Videos_model extends CI_Model {
                        $category_id);
                
                if ($query->num_rows() > 0)
-                       return $row = $query->row()->count;
+                       return $query->row()->count;
                
                // Error
                return NULL;
@@ -119,6 +117,8 @@ class Videos_model extends CI_Model {
         */
        public function get_video($id, $name = NULL)
        {
+               $this->load->helper('video');
+               
                $query = $this->db->query('SELECT * 
                                                                FROM `videos` 
                                                                WHERE id = ?', $id);
@@ -143,6 +143,12 @@ class Videos_model extends CI_Model {
                asort($video['tags']);
                $video['tags'] = array_reverse($video['tags'], TRUE);
                
+               // Sort assets by their megapixels number.
+               function access_function($a) { return $a['res']; }
+               function assets_cmp($a, $b) 
+                       { return megapixels_cmp($a, $b, "access_function"); }
+               usort($video['assets'], "assets_cmp");
+               
                // Torrents
                $video['url'] = array();
                foreach ($video['assets'] as & $asset)
@@ -168,6 +174,21 @@ class Videos_model extends CI_Model {
                return $video;
        }
        
+       /**
+        * Increment a video parameter from DB: `views`, `likes` or `dislikes`.
+        * 
+        * @param int $id       DB video id
+        * @param string $param DB parameter column name.
+        * @return void
+        */
+       public function inc_video_var($id, $var)
+       {
+               // TODO error report if query returns FALSE
+               $this->db->query('UPDATE `videos` '
+                                               . 'SET `'. $var. '`=`'. $var. '`+1 '
+                                               . 'WHERE id='. $id); 
+       }
+       
        public function get_thumbs($name, $count)
        {
                $thumbs = array();
@@ -177,6 +198,79 @@ class Videos_model extends CI_Model {
                
                return $thumbs;
        }
+
+       /**
+        * Searches videos in DB based on a search query string and returns an
+        * associative array of results.
+        * If count is zero the function only return the number of results.
+        * @param string $search_query
+        * @param int $offset
+        * @param int $count
+        * @param int $category_id      if NULL, all categories are searched
+        * @return array        an associative array with the same keys as that from
+        * get_videos_summary's result, but with two additional keys: 
+        * description and date.
+        */
+       public function search_videos($search_query, $offset = 0, $count = 0, 
+                                                                       $category_id = NULL)
+       {
+               if ($count === 0)
+               {
+                       $selected_columns = "COUNT(*) count";
+                       $limit = "";
+               }
+               else
+               { 
+                       $selected_columns = "id, name, title, duration, user_id, views, thumbs_count, default_thumb, date, description";
+                       $limit = "LIMIT $offset, $count";
+               }
+               
+               if ($category_id !== NULL)
+                       $category_cond = "category_id = '$category_id' AND ";
+               else
+                       $category_cond = "";
+
+               $search_query = trim($search_query);
+               
+               $query = $this->db->query(
+                       "SELECT $selected_columns
+                       FROM `videos`
+                       WHERE  $category_cond MATCH (title, description, tags) AGAINST (?)
+                       $limit",
+                       array($search_query)); 
+               
+               if ($query->num_rows() > 0)
+               {
+                       if ($count === 0)
+                               return $query->row()->count;
+                       else
+                               $videos = $query->result_array();
+               }
+               else
+                       return NULL;
+               
+               $this->load->helper('text');
+               
+               foreach ($videos as & $video)
+               {
+                       // P2P-Tube Video URL
+                       $video['video_url'] = site_url(sprintf("watch/%d/%s",
+                               $video['id'], $video['name']));
+                       
+                       // Thumbnails
+                       $video['thumbs'] = $this->get_thumbs($video['name'], 
+                               $video['thumbs_count']);
+                               
+                       // Ellipsized title
+                       //$video['shorted_title'] = ellipsize($video['title'], 45, 0.75);
+                       $video['shorted_title'] = character_limiter($video['title'], 50);
+                       
+                       // TODO: user information
+                       $video['user_name'] = 'TODO';
+               }
+               
+               return $videos;
+       }
 }
 
 /* End of file videos_model.php */