X-Git-Url: http://p2p-next.cs.pub.ro/gitweb/?a=blobdiff_plain;f=application%2Fmodels%2Fvideos_model.php;h=c09673c52d14d81b10c79e6e3dba013c6767f458;hb=b56dce7ae724d5b955a96d7d3d5b3b476d2e28fb;hp=3ab8592933957ade4e3e9daff0560a436ae5ab84;hpb=a11428ed0b4651895e27d6920c219d8d2476631c;p=living-lab-site.git diff --git a/application/models/videos_model.php b/application/models/videos_model.php index 3ab8592..c09673c 100644 --- a/application/models/videos_model.php +++ b/application/models/videos_model.php @@ -7,51 +7,129 @@ * @author Călin-Andrei Burloiu */ class Videos_model extends CI_Model { - private $db = NULL; + public $db = NULL; public function __construct() { + parent::__construct(); + if ($this->db === NULL) { $this->load->library('singleton_db'); $this->db = $this->singleton_db->connect(); } - - $this->load->helper('url'); } /** - * Retrieves information about a set of videos which are going to be - * displayed in the catalog. + * Retrieves a set of videos information which can be used for displaying + * that videos as a list with few details. * - * 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 + * @param int $category_id DB category ID; pass NULL for all + * categories + * @param mixed $user an user_id (as int) or an username + * (as string); pass NULL for all users + * @param int $offset + * @param int $count number of videos to retrieve; if set to TRUE this + * method will retrieve the number of videos that satisfy condition + * @param string $ordering control videos ording by these + * possibilities: + * + * @param bool $unactivated whether to retrieve or not ingested unactivated + * videos; typically only administrators should see this kind of assets + * @return array a list of videos, each one being an assoc array with: + * */ - public function get_videos_summary($category_id, $offset, $count) + public function get_videos_summary($category_id, $user, $offset, $count, + $ordering = 'hottest', $unactivated = FALSE) { $this->load->helper('text'); + $order_statement = ""; + if ($count !== TRUE) + { + // Ordering + switch ($ordering) + { + case 'hottest': + $order_statement = "ORDER BY date DESC, score DESC, RAND()"; + break; + case 'newest': + $order_statement = "ORDER BY date DESC"; + break; + case 'alphabetically': + $order_statement = "ORDER BY title"; + break; + + default: + $order_statement = ""; + } + } + + // Show unactivated videos. + $cond_unactivated = ($unactivated + ? '(a.activation_code IS NULL OR a.activation_code IS NOT NULL + AND a.content_ingested = 1)' + : 'a.activation_code IS NULL'); + + // Category filtering + if ($category_id === NULL) + $cond_category = "1"; + else + { + $category_id = intval($category_id); + $cond_category = "category_id = $category_id"; + } + + // User filtering + if ($user === NULL) + $cond_user = "1"; + else + { + if (is_int($user)) + $cond_user = "v.user_id = $user"; + else if (is_string($user)) + $cond_user = "u.username = '$user'"; + } + + if ($count === TRUE) + $fields = "COUNT(*) count"; + else + $fields = "v.id, name, title, duration, user_id, u.username, views, + thumbs_count, default_thumb, + (views + likes - dislikes) AS score, + a.activation_code, a.content_ingested"; + $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)); + "SELECT $fields + FROM `videos` v + LEFT JOIN `videos_unactivated` a ON (id = a.video_id), + `users` u + WHERE v.user_id = u.id AND $cond_category AND $cond_user + AND $cond_unactivated + $order_statement + LIMIT $offset, $count"); if ($query->num_rows() > 0) + { + if ($count === TRUE) + return $query->row()->count; + $videos = $query->result_array(); + } else - return NULL; + return array(); foreach ($videos as & $video) { @@ -62,28 +140,30 @@ class Videos_model extends CI_Model { // Thumbnails $video['thumbs'] = $this->get_thumbs($video['name'], $video['thumbs_count']); + $video['json_thumbs'] = json_encode($video['thumbs']); // Ellipsized title //$video['shorted_title'] = ellipsize($video['title'], 45, 0.75); - $video['shorted_title'] = character_limiter($video['title'], 45); + $video['shorted_title'] = character_limiter($video['title'], 50); } return $videos; } - public function get_videos_count($category_id) + /** + * Returns the number of videos from database from a specific category or + * user. + * NULL parameters count videos from all categories and / or all users. + * + * @param int $category_id + * @param mixed $user an user_id (as int) or an username (as string) + * @return int number of videos or FALSE if an error occured + */ + public function get_videos_count($category_id = NULL, $user = NULL, + $unactivated = FALSE) { - $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; + return $this->get_videos_summary($category_id, $user, 0, TRUE, NULL, + $unactivated); } /** @@ -92,27 +172,37 @@ class Videos_model extends CI_Model { * 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 + * @access public + * @param string $id video's `id` column from `videos` DB table + * @param string $name video's `name` column from `videos` DB * table. NULL means there is no name provided. - * @return array an associative list with information about a video + * @return array an associative list with information about a video * with the following keys: - * * all columns form DB with some exceptions that are overwritten or new - * * torrents => list of torrent file names formated as - * {name}_{format}.{default_video_ext}.{default_torrent_ext} - * * user_name => TODO: user name from `users` table - * * formats => list of formats like 1080p - * * category_name => TODO: human-friendly category name - * * tags => associative list of "tag => score" - * * date => date and time when the video was created - * * thumbs => thumbnail images' URLs + * */ public function get_video($id, $name = NULL) { - $query = $this->db->query('SELECT * - FROM `videos` - WHERE id = ?', $id); + $this->load->helper('video'); + $this->load->helper('text'); + + $query = $this->db->query("SELECT v.*, u.username, + a.activation_code, a.content_ingested + FROM `videos` v + LEFT JOIN `videos_unactivated` a ON (v.id = a.video_id), + `users` u + WHERE v.user_id = u.id AND v.id = $id"); $video = array(); if ($query->num_rows() > 0) @@ -123,33 +213,362 @@ class Videos_model extends CI_Model { } else { - $video['err'] = 'INVALID_ID'; - return $video; + return FALSE; } // Convert JSON encoded string to arrays. - $video['formats'] = json_decode($video['formats'], TRUE); + $video['assets'] = json_decode($video['formats'], TRUE); + unset($video['formats']); $video['tags'] = json_decode($video['tags'], TRUE); asort($video['tags']); - $video['tags'] = array_reverse($video['tags'], true); + $video['tags'] = array_reverse($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 - $video['torrents'] = array(); - foreach ($video['formats'] as $format) + $video['url'] = array(); + foreach ($video['assets'] as & $asset) { - $ext = isset($format['ext']) ? - $format['ext'] : $this->config->item('default_video_ext'); - $video['torrents'][] = site_url('data/torrents/'. $video['name'] . '_' - . $format['def'] . '.'. $ext + $def = substr($asset['res'], strpos($asset['res'], 'x') + 1) . 'p'; + $asset['def'] = $def; + $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']); + // Shorted description + $video['shorted_description'] = character_limiter( + $video['description'], 128); + return $video; } + /** + * Adds a new uploaded video to the DB. + * + * @param string $name + * @param string $title + * @param string $description + * @param string $tags comma separated tags + * @param string $duration video duration formatted [HH:]mm:ss + * @param array $formats a dictionary corresponding to `formats` JSON + * column from `videos` table + * @param int $category_id + * @param int $user_id + * @param string $uploaded_file the raw video file uploaded by the user + * @return mixed returns an activation code on success or FALSE otherwise + */ + public function add_video($name, $title, $description, $tags, $duration, + $formats, $category_id, $user_id, $uploaded_file) + { + $this->load->config('content_ingestion'); + + // Tags. + $json_tags = array(); + $tok = strtok($tags, ','); + while ($tok != FALSE) + { + $json_tags[trim($tok)] = 0; + + $tok = strtok(','); + } + $json_tags = json_encode($json_tags); + + $json_formats = json_encode($formats); + + // Thumbnail images + $thumbs_count = $this->config->item('thumbs_count'); + $default_thumb = rand(0, $thumbs_count - 1); + + $query = $this->db->query("INSERT INTO `videos` + (name, title, description, duration, formats, category_id, + user_id, tags, date, thumbs_count, default_thumb) + VALUES ('$name', '$title', '$description', '$duration', + '$json_formats', $category_id, + $user_id, '$json_tags', utc_timestamp(), + $thumbs_count, $default_thumb)"); + if ($query === FALSE) + return FALSE; + + // Find out the id of the new video added. + $query = $this->db->query("SELECT id from `videos` + WHERE name = '$name'"); + if ($query->num_rows() === 0) + return FALSE; + $video_id = $query->row()->id; + + // Activation code. + $activation_code = Videos_model::gen_activation_code(); + + $query = $this->db->query("INSERT INTO `videos_unactivated` + (video_id, activation_code, uploaded_file) + VALUES ($video_id, '$activation_code', '$uploaded_file')"); + + return $activation_code; + } + + public function set_content_ingested($activation_code) + { + return $this->db->query("UPDATE `videos_unactivated` + SET content_ingested = 1 + WHERE activation_code = '$activation_code'"); + } + + /** + * Activates a video by deleting its entry from `videos_unactivated`. + * + * @param mixed $code_or_id use type string for activation_code or type + * int for video_id + * @return boolean TRUE on success, FALSE otherwise + */ + public function activate_video($code_or_id) + { + if (is_string($code_or_id)) + $query = $this->db->query("SELECT uploaded_file from `videos_unactivated` + WHERE activation_code = '$code_or_id'"); + else if (is_int($code_or_id)) + $query = $this->db->query("SELECT uploaded_file from `videos_unactivated` + WHERE video_id = '$code_or_id'"); + else + return FALSE; + + if ($query->num_rows() > 0) + $uploaded_file = $query->row()->uploaded_file; + else + return FALSE; + + if (is_string($code_or_id)) + $query = $this->db->query("DELETE FROM `videos_unactivated` + WHERE activation_code = '$code_or_id'"); + else if (is_int($code_or_id)) + $query = $this->db->query("DELETE FROM `videos_unactivated` + WHERE video_id = '$code_or_id'"); + else + return FALSE; + + if (!$query) + return $query; + + return unlink("data/upload/$uploaded_file"); + } + + public function get_unactivated_videos() + { + $query = $this->db->query("SELECT a.video_id, v.name, a.content_ingested + FROM `videos_unactivated` a, `videos` v + WHERE a.video_id = v.id AND a.content_ingested = 1"); + + if ($query->num_rows() > 0) + return $query->result_array(); + else + return FALSE; + } + + /** + * Retrieves comments for a video. + * + * @param int $video_id + * @param int $offset + * @param int $count + * @param string $ordering control comments ording by these possibilities: + * + * @return array an array with comments + */ + public function get_video_comments($video_id, $offset, $count, + $ordering = 'newest') + { + $this->load->helper('date'); + $cond_hottest = ''; + + // Ordering + switch ($ordering) + { + case 'newest': + $order_statement = "ORDER BY time DESC"; + break; + case 'hottest': + $order_statement = "ORDER BY score DESC, time DESC"; + $cond_hottest = "AND c.likes + c.dislikes > 0"; + break; + + default: + $order_statement = ""; + } + + $query = $this->db->query( + "SELECT c.*, u.username, u.time_zone, (c.likes + c.dislikes) AS score + FROM `videos_comments` c, `users` u + WHERE c.user_id = u.id AND video_id = $video_id $cond_hottest + $order_statement + LIMIT $offset, $count"); + + if ($query->num_rows() == 0) + return array(); + + $comments = $query->result_array(); + + foreach ($comments as & $comment) + { + $comment['local_time'] = human_gmt_to_human_local($comment['time'], + $comment['time_zone']); + } + + return $comments; + } + + public function get_video_comments_count($video_id) + { + $query = $this->db->query( + "SELECT COUNT(*) count + FROM `videos_comments` + WHERE video_id = $video_id"); + + if ($query->num_rows() == 0) + return FALSE; + + return $query->row()->count; + } + + /** + * Insert in DB a comment for a video. + * + * @param int $video_id + * @param int $user_id + * @param string $content + */ + public function comment_video($video_id, $user_id, $content) + { + // Prepping content. + $content = substr($content, 0, 512); + $content = htmlspecialchars($content); + $content = nl2br($content); + + return $query = $this->db->query( + "INSERT INTO `videos_comments` (video_id, user_id, content, time) + VALUES ($video_id, $user_id, '$content', UTC_TIMESTAMP())"); + } + + /** + * Increments views count for a video. + * + * @param int $id DB video id + * @return void + */ + public function inc_views($id) + { + return $this->db->query('UPDATE `videos` ' + . 'SET `views`=`views`+1 ' + . 'WHERE id='. $id); + } + + public function vote($video_id, $user_id, $like = TRUE) + { + if ($like) + { + $col = 'likes'; + $action = 'like'; + } + else + { + $col = 'dislikes'; + $action = 'dislike'; + } + + $query = $this->db->query("SELECT * FROM `users_actions` + WHERE user_id = $user_id + AND target_id = $video_id + AND target_type = 'video' + AND action = '$action' + AND date = CURDATE()"); + // User already voted today + if ($query->num_rows() > 0) + return -1; + + $this->db->query("UPDATE `videos` + SET $col = $col + 1 + WHERE id = $video_id"); + + // Mark this action so that the user cannot repeat it today. + $this->db->query("INSERT INTO `users_actions` + (user_id, action, target_type, target_id, date) + VALUES ( $user_id, '$action', 'video', $video_id, CURDATE() )"); + + $query = $this->db->query("SELECT $col FROM `videos` + WHERE id = $video_id"); + + if ($query->num_rows() === 1) + { + $row = $query->row_array(); + return $row[ $col ]; + } + + // Error + return FALSE; + } + + public function vote_comment($comment_id, $user_id, $like = TRUE) + { + if ($like) + { + $col = 'likes'; + $action = 'like'; + } + else + { + $col = 'dislikes'; + $action = 'dislike'; + } + + $query = $this->db->query("SELECT * FROM `users_actions` + WHERE user_id = $user_id + AND target_id = $comment_id + AND target_type = 'vcomment' + AND action = '$action' + AND date = CURDATE()"); + // User already voted today + if ($query->num_rows() > 0) + return -1; + + $this->db->query("UPDATE `videos_comments` + SET $col = $col + 1 + WHERE id = $comment_id"); + + // Mark this action so that the user cannot repeat it today. + $this->db->query("INSERT INTO `users_actions` + (user_id, action, target_type, target_id, date) + VALUES ( $user_id, '$action', 'vcomment', $comment_id, CURDATE() )"); + + $query = $this->db->query("SELECT $col FROM `videos_comments` + WHERE id = $comment_id"); + + if ($query->num_rows() === 1) + { + $row = $query->row_array(); + return $row[ $col ]; + } + + // Error + return FALSE; + } + public function get_thumbs($name, $count) { $thumbs = array(); @@ -159,6 +578,188 @@ 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) + { + $search_query = trim($search_query); + $search_query = str_replace("'", " ", $search_query); + + // Search word fragments. + // sfc = search fragment condition + $sfc = "( "; + // sfr = search fragment relevance + $sfr = "( "; + $sep = ' +-*<>()~"'; + $fragm = strtok($search_query, $sep); + while ($fragm !== FALSE) + { + $sfc .= "(title LIKE '%$fragm%' + OR description LIKE '%$fragm%' + OR tags LIKE '%$fragm%') OR "; + + // Frament relevances are half of boolean relevances such + // that they will appear at the end of the results. + $sfr .= "0.25 * (title LIKE '%$fragm%') + + 0.1 * (description LIKE '%$fragm%') + + 0.15 * (tags LIKE '%$fragm%') + "; + + $fragm = strtok($sep); + } + $sfc = substr($sfc, 0, -4) . " )"; + $sfr = substr($sfr, 0, -3) . " )"; + + if (! $this->is_advanced_search_query($search_query)) + { + $search_cond = "MATCH (title, description, tags) + AGAINST ('$search_query') OR $sfc"; + $relevance = "( MATCH (title, description, tags) + AGAINST ('$search_query') + $sfr ) AS relevance"; + } + // boolean mode + else + { + $against = "AGAINST ('$search_query' IN BOOLEAN MODE)"; + $search_cond = "( MATCH (title, description, tags) + $against) OR $sfc"; + $relevance = "( 0.5 * (MATCH(title) $against) + + 0.3 * (MATCH(tags) $against) + + 0.2 * (MATCH(description) $against) + + $sfr) AS relevance"; + } + + if ($count === 0) + { + $selected_columns = "COUNT(*) count"; + $order = ""; + $limit = ""; + } + else + { + // TODO select data, description if details are needed + $selected_columns = "v.id, name, title, duration, user_id, views, + thumbs_count, default_thumb, u.username, + (views + likes - dislikes) AS score, + $relevance"; + $order = "ORDER BY relevance DESC, score DESC"; + $limit = "LIMIT $offset, $count"; + } + + if ($category_id !== NULL) + $category_cond = "category_id = '$category_id' AND "; + else + $category_cond = ""; + + $str_query = "SELECT $selected_columns + FROM `videos` v, `users` u + WHERE v.user_id = u.id AND $category_cond ( $search_cond ) + $order + $limit"; +// echo "

$str_query

"; + $query = $this->db->query($str_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']); + $video['json_thumbs'] = json_encode($video['thumbs']); + + // 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 $videos; + } + + public function decode_search_query($search_query) + { + $search_query = urldecode($search_query); + + $search_query = str_replace('_AST_', '*', $search_query); + $search_query = str_replace('_AND_', '+', $search_query); + $search_query = str_replace('_GT_', '>', $search_query); + $search_query = str_replace('_LT_', '<', $search_query); + $search_query = str_replace('_PO_', '(', $search_query); + $search_query = str_replace('_PC_', ')', $search_query); + $search_query = str_replace('_LOW_', '~', $search_query); + $search_query = str_replace('_QUO_', '"', $search_query); + + return $search_query; + } + + public function encode_search_query($search_query) + { + $search_query = str_replace('*', '_AST_', $search_query); + $search_query = str_replace('+', '_AND_', $search_query); + $search_query = str_replace('>', '_GT_', $search_query); + $search_query = str_replace('<', '_LT_', $search_query); + $search_query = str_replace('(', '_PO_', $search_query); + $search_query = str_replace(')', '_PC_', $search_query); + $search_query = str_replace('~', '_LOW_', $search_query); + $search_query = str_replace('"', '_QUO_', $search_query); + + $search_query = urlencode($search_query); + + return $search_query; + } + + /** + * Return TRUE if it contains any special caracter from an advanced search + * query. + * @param string $search_query + * @return boolean + */ + public function is_advanced_search_query($search_query) + { + return (preg_match('/\*|\+|\-|>|\<|\(|\)|~|"/', $search_query) == 0 + ? FALSE : TRUE); + } + + public static function gen_activation_code() + { + $ci =& get_instance(); + + $activation_code = substr( + sha1($ci->config->item('encryption_key') + . mt_rand()), + 0, + 16); + + return $activation_code; + } } /* End of file videos_model.php */