application/models/videos_model.php

   1 <?php
   2
   3 /**
   4  * Class Videos_model models videos information from the DB
   5  *
   6  * @category    Model
   7  * @author              Călin-Andrei Burloiu
   8  */
   9 class Videos_model extends CI_Model {
  10         private $db = NULL;
  11
  12         public function __construct()
  13         {
  14                 if ($this->db === NULL)
  15                 {
  16                         $this->load->library('singleton_db');
  17                         $this->db = $this->singleton_db->connect();
  18                 }
  19
  20                 $this->load->helper('url');
  21         }
  22
  23         /**
  24          * Retrieves information about a set of videos which are going to be
  25          * displayed in the catalog.
  26          *
  27          * TODO: filter, limit, ordering parameters
  28          * @return              array   a list of videos, each one being an assoc array with:
  29          *   * id, name, title, duration, thumbs_count, default_thumb, views => from DB
  30          *   * shorted_title => ellipsized title
  31          *   * video_url => P2P-Tube video URl
  32          *   * TODO: user_id, user_name
  33          *   * thumbs => thumbnail images' URLs
  34          */
  35         public function get_videos_summary($category_id)
  36         {
  37                 $this->load->helper('text');
  38
  39                 $query = $this->db->query(
  40                         'SELECT id, name, title, duration, user_id, views, thumbs_count,
  41                                 default_thumb
  42                         FROM `videos`
  43                         WHERE category_id = ?
  44                         ORDER BY name', // TODO summary order
  45                         $category_id);
  46                 $videos = $query->result_array();
  47
  48                 foreach ($videos as & $video)
  49                 {
  50                         // P2P-Tube Video URL
  51                         $video['video_url'] = site_url(sprintf("watch/%d/%s",
  52                                 $video['id'], $video['name']));
  53
  54                         // Thumbnails
  55                         $video['thumbs'] = $this->get_thumbs($video['name'],
  56                                 $video['thumbs_count']);
  57
  58                         // Ellipsized title
  59                         //$video['shorted_title'] = ellipsize($video['title'], 45, 0.75);
  60                         $video['shorted_title'] = character_limiter($video['title'], 45);
  61                 }
  62
  63                 return $videos;
  64         }
  65
  66         /**
  67          * Retrieves information about a video.
  68          *
  69          * If $name does not match with the video's `name` from the DB an error is
  70          * marked in the key 'err'. If it's NULL it is ignored.
  71          *
  72          * @access              public
  73          * @param               string $id      video's `id` column from `videos` DB table
  74          * @param               string $name    video's `name` column from `videos` DB
  75          * table. NULL means there is no name provided.
  76          * @return              array   an associative list with information about a video
  77          * with the following keys:
  78          *   * all columns form DB with some exceptions that are overwritten or new
  79          *   * torrents => list of torrent file names formated as
  80          * {name}_{format}.{default_video_ext}.{default_torrent_ext}
  81          *   * user_name => TODO: user name from `users` table
  82          *   * formats => list of formats like 1080p
  83          *   * category_name => TODO: human-friendly category name
  84          *   * tags => associative list of "tag => score"
  85          *   * date => date and time when the video was created
  86          *   * thumbs => thumbnail images' URLs
  87          */
  88         public function get_video($id, $name = NULL)
  89         {
  90                 $query = $this->db->query('SELECT *
  91                                                                 FROM `videos`
  92                                                                 WHERE id = ?', $id);
  93                 $video = array();
  94
  95                 if ($query->num_rows() > 0)
  96                 {
  97                         $video = $query->row_array();
  98                         if ($name !== NULL && $video['name'] != $name)
  99                                 $video['err'] = 'INVALID_NAME';
 100                 }
 101                 else
 102                 {
 103                         $video['err'] = 'INVALID_ID';
 104                         return $video;
 105                 }
 106
 107                 // Convert JSON encoded string to arrays.
 108                 $video['formats'] = json_decode($video['formats'], TRUE);
 109                 $video['tags'] = json_decode($video['tags'], TRUE);
 110                 asort($video['tags']);
 111                 $video['tags'] = array_reverse($video['tags'], true);
 112
 113                 // Torrents
 114                 $video['torrents'] = array();
 115                 foreach ($video['formats'] as $format)
 116                 {
 117                         $ext = isset($format['ext']) ?
 118                                 $format['ext'] : $this->config->item('default_video_ext');
 119                         $video['torrents'][] = site_url('data/torrents/'. $video['name'] . '_'
 120                                 . $format['def'] . '.'. $ext
 121                                 . '.'. $this->config->item('default_torrent_ext'));
 122                 }
 123
 124                 // Thumbnails
 125                 $video['thumbs'] = $this->get_thumbs($video['name'], $video['thumbs_count']);
 126
 127                 return $video;
 128         }
 129
 130         public function get_thumbs($name, $count)
 131         {
 132                 $thumbs = array();
 133
 134                 for ($i=0; $i < $count; $i++)
 135                         $thumbs[] = site_url(sprintf("data/thumbs/%s_t%02d.jpg", $name, $i));
 136
 137                 return $thumbs;
 138         }
 139 }
 140
 141 /* End of file videos_model.php */
 142 /* Location: ./application/models/videos_model.php */