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                         $this->load->helper('url');
  20                 }
  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          *   * video_url => P2P-Tube video URl
  31          *   * TODO: user_id, user_name
  32          *   * thumbs => thumbnail images' URLs
  33          */
  34         public function get_videos_summary()
  35         {
  36                 $query = $this->db->query(
  37                         'SELECT id, name, title, duration, user_id, views, thumbs_count,
  38                                 default_thumb
  39                         FROM `videos`
  40                         ORDER BY name'); // TODO summary order
  41                 $videos = $query->result_array();
  42
  43                 foreach ($videos as & $video)
  44                 {
  45                         // P2P-Tube Video URL
  46                         $video['video_url'] = site_url(sprintf("video/watch/%d/%s",
  47                                 $video['id'], $video['name']));
  48
  49                         // Thumbnails
  50                         $video['thumbs'] = $this->get_thumbs($video['name'],
  51                                 $video['thumbs_count']);
  52                 }
  53
  54                 return $videos;
  55         }
  56
  57         /**
  58          * Retrieves information about a video.
  59          *
  60          * If $name does not match with the video's `name` from the DB an error is
  61          * marked in the key 'err'. If it's NULL it is ignored.
  62          *
  63          * @access              public
  64          * @param               string $id      video's `id` column from `videos` DB table
  65          * @param               string $name    video's `name` column from `videos` DB
  66          * table. NULL means there is no name provided.
  67          * @return              array   an associative list with information about a video
  68          * with the following keys:
  69          *   * all columns form DB with some exceptions that are overwritten or new
  70          *   * torrents => list of torrent file names formated as
  71          * {name}_{format}.{default_video_ext}.{default_torrent_ext}
  72          *   * user_name => TODO: user name from `users` table
  73          *   * formats => list of formats like 1080p
  74          *   * category_name => TODO: human-friendly category name
  75          *   * tags => associative list of "tag => score"
  76          *   * date => date and time when the video was created
  77          *   * thumbs => thumbnail images' URLs
  78          */
  79         public function get_video($id, $name = NULL)
  80         {
  81                 $query = $this->db->query('SELECT *
  82                                                                 FROM `videos`
  83                                                                 WHERE id = ?', $id);
  84                 $video = array();
  85
  86                 if ($query->num_rows() > 0)
  87                 {
  88                         $video = $query->row_array();
  89                         if ($name !== NULL && $video['name'] != $name)
  90                                 $video['err'] = 'INVALID_NAME';
  91                 }
  92                 else
  93                 {
  94                         $video['err'] = 'INVALID_ID';
  95                         return $video;
  96                 }
  97
  98                 // Convert JSON encoded string to arrays.
  99                 $video['formats'] = json_decode($video['formats'], TRUE);
 100                 $video['tags'] = json_decode($video['tags'], TRUE);
 101                 asort($video['tags']);
 102                 $video['tags'] = array_reverse($video['tags'], true);
 103
 104                 // Torrents
 105                 $video['torrents'] = array();
 106                 foreach ($video['formats'] as $format)
 107                 {
 108                         $ext = isset($format['ext']) ?
 109                                 $format['ext'] : $this->config->item('default_video_ext');
 110                         $video['torrents'][] = site_url('data/torrents/'. $video['name'] . '_'
 111                                 . $format['def'] . '.'. $ext
 112                                 . '.'. $this->config->item('default_torrent_ext'));
 113                 }
 114
 115                 // Thumbnails
 116                 $video['thumbs'] = $this->get_thumbs($video['name'], $video['thumbs_count']);
 117
 118                 return $video;
 119         }
 120
 121         public function get_thumbs($name, $count)
 122         {
 123                 $thumbs = array();
 124
 125                 for ($i=0; $i < $count; $i++)
 126                         $thumbs[] = site_url(sprintf("data/thumbs/%s_t%02d.jpg", $name, $i));
 127
 128                 return $thumbs;
 129         }
 130 }
 131
 132 /* End of file videos_model.php */
 133 /* Location: ./application/models/videos_model.php */