X-Git-Url: http://p2p-next.cs.pub.ro/gitweb/?a=blobdiff_plain;f=application%2Fmodels%2Fvideos_model.php;h=5c975914ab3d5a1ccfd8be934deb9138325efaa8;hb=9e326b335014eac0c6c6476402654b19c57a396f;hp=b5ae2d799ffe36d35c892cebb09c8e90b6b3fc46;hpb=0b134deb6f1108155973436e3de7296a76a2d660;p=living-lab-site.git

diff --git a/application/models/videos_model.php b/application/models/videos_model.php
index b5ae2d7..5c97591 100644
--- a/application/models/videos_model.php
+++ b/application/models/videos_model.php
@@ -9,23 +9,169 @@
 class Videos_model extends CI_Model {
 	private $db = NULL;
 	
-	function __construct()
+	public function __construct()
 	{
 		if ($this->db === NULL)
 		{
 			$this->load->library('singleton_db');
 			$this->db = $this->singleton_db->connect();
 		}
+		
+		$this->load->helper('url');
 	}
 	
-	function getVideosSummary()
+	/**
+	 * Retrieves information about a set of videos which are going to be
+	 * displayed in the catalog.
+	 *
+	 * TODO: filter, limit, ordering parameters
+	 * @param		int $category_id	DB category ID
+	 * @param		int $offset
+	 * @param		int $count
+	 * @return		array	a list of videos, each one being an assoc array with:
+	 *   * id, name, title, duration, thumbs_count, default_thumb, views => from DB
+	 *   * shorted_title => ellipsized title
+	 *   * video_url => P2P-Tube video URl
+	 *   * TODO: user_id, user_name
+	 *   * thumbs => thumbnail images' URLs
+	 */
+	public function get_videos_summary($category_id, $offset, $count)
 	{
-		return $this->db->get('videos');
+		$this->load->helper('text');
+		
+		$query = $this->db->query(
+			'SELECT id, name, title, duration, user_id, views, thumbs_count,
+				default_thumb
+			FROM `videos`
+			WHERE category_id = ?
+			ORDER BY name
+			LIMIT ?, ?', // TODO summary order 
+			array(intval($category_id), $offset, $count)); 
+		
+		if ($query->num_rows() > 0)
+			$videos = $query->result_array();
+		else
+			return NULL;
+		
+		foreach ($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 $videos;
+	}
+	
+	public function get_videos_count($category_id)
+	{
+		$query = $this->db->query(
+			'SELECT COUNT(*) count
+			FROM `videos`
+			WHERE category_id = ?',
+			$category_id);
+		
+		if ($query->num_rows() > 0)
+			return $row = $query->row()->count;
+		
+		// Error
+		return NULL;
+	}
+	
+	/**
+	 * Retrieves information about a video.
+	 *
+	 * If $name does not match with the video's `name` from the DB an error is
+	 * marked in the key 'err'. If it's NULL it is ignored.
+	 *
+	 * @access		public
+	 * @param		string $id	video's `id` column from `videos` DB table
+	 * @param		string $name	video's `name` column from `videos` DB
+	 * table. NULL means there is no name provided.
+	 * @return		array	an associative list with information about a video
+	 * with the following keys:
+	 *   * all columns form DB with some exceptions that are overwritten or new
+	 *   * formats content is moved in assets
+	 *   * assets => list of associative lists where each one represents a
+	 * video asset having keys: "src", "res", "par" and "ext". Value of key
+	 * "src" is the video torrent formated as
+	 * {name}_{format}.{video_ext}.{default_torrent_ext}
+	 *   * user_name => TODO: user name from `users` table
+	 *   * category_title => a human-friendly category name
+	 *   * tags => associative list of "tag => score"
+	 *   * date => date and time when the video was created
+	 *   * thumbs => thumbnail images' URLs
+	 */
+	public function get_video($id, $name = NULL)
+	{
+		$query = $this->db->query('SELECT * 
+								FROM `videos` 
+								WHERE id = ?', $id);
+		$video = array();
+		
+		if ($query->num_rows() > 0)
+		{
+			$video = $query->row_array();
+			if ($name !== NULL && $video['name'] != $name)
+				$video['err'] = 'INVALID_NAME';
+		}
+		else
+		{
+			$video['err'] = 'INVALID_ID';
+			return $video;
+		}
+		
+		// Convert JSON encoded string to arrays.
+		$video['assets'] = json_decode($video['formats'], TRUE);
+		unset($video['formats']);
+		$video['tags'] = json_decode($video['tags'], TRUE);
+		asort($video['tags']);
+		$video['tags'] = array_reverse($video['tags'], TRUE);
+		
+		// Torrents
+		$video['url'] = array();
+		foreach ($video['assets'] as & $asset)
+		{
+			$def = substr($asset['res'], strpos($asset['res'], 'x') + 1) . 'p';
+ 			$asset['src'] = site_url('data/torrents/'. $video['name'] . '_'
+ 				. $def . '.'. $asset['ext']
+ 				. '.'. $this->config->item('default_torrent_ext'));
+		}
+		
+		// Category title
+		$categories = $this->config->item('categories');
+		$category_name = $categories[ intval($video['category_id']) ];
+		$video['category_title'] = $category_name ?
+			$this->lang->line("ui_categ_$category_name") : $category_name;
+		
+		// Thumbnails
+		$video['thumbs'] = $this->get_thumbs($video['name'], $video['thumbs_count']);
+		
+		// TODO: user information
+		$video['user_name'] = 'TODO';
+		
+		return $video;
 	}
 	
-	function getVideo($id, $name = NULL)
+	public function get_thumbs($name, $count)
 	{
-		return $this->db->query('SELECT * from videos WHERE id = ?', $id);
+		$thumbs = array();
+		
+		for ($i=0; $i < $count; $i++)
+			$thumbs[] = site_url(sprintf("data/thumbs/%s_t%02d.jpg", $name, $i));
+		
+		return $thumbs;
 	}
 }