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