<?php
/*

 Copyright (c) 2004 Ampache.org
 All rights reserved.

 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; either version 2
 of the License, or (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. 

*/

/*!
	@header Artist Class
*/

class Artist {

	/* Variables from DB */
	var $id;
	var $name;
	var $songs;
	var $albums;
	var $prefix;

	/*!
		@function Artist
		@discussion Song class, for modifing a song.
		@param $song_id 	The ID of the song
	 */
	function Artist($song_id = 0) {

		/* If we have passed an id then do something */
		if ($song_id) { 

			/* Assign id for use in get_info() */
			$this->id = $song_id;

			/* Get the information from the db */
			if ($info = $this->get_info()) {

				/* Assign Vars */
				$this->name = $info->name;
				$this->prefix = $info->prefix;
			} // if info

		} // if song_id

	} //constructor


	/*!
		@function get_info
		@discussion get's the vars for $this out of the database 
		@param $this->id	Taken from the object
	*/
	function get_info() {

		/* Grab the basic information from the catalog and return it */
		$sql = "SELECT * FROM artist WHERE id='$this->id'";
		$db_results = mysql_query($sql, dbh());

		$results = mysql_fetch_object($db_results);

		return $results;

	} //get_info

	/*!
		@function get_albums
		@discussion gets the albums for this artist
	*/
	function get_albums() { 

		$results = array();

		$sql = "SELECT DISTINCT(album.id) FROM song,album WHERE song.album=album.id AND song.artist='$this->id' ORDER BY album.name";
		$db_results = mysql_query($sql, dbh());

		while ($r = mysql_fetch_object($db_results)) { 
			$results[] = new Album($r->id);
		}

		return $results;
		
	} // get_albums

	/*! 
		@function get_songs
		@discussion gets the songs for this artist
	*/
	function get_songs() { 
	
		$sql = "SELECT song.id FROM song WHERE song.artist='$this->id'";
		$db_results = mysql_query($sql, dbh());

		while ($r = mysql_fetch_object($db_results)) { 
			$results[] = new Song($r->id);
		}

		return $results;

	} // get_songs

        /*!
                @function get_random_songs
                @discussion gets a random number, and
                        a random assortment of songs from this
                        album
        */
        function get_random_songs() {

                $results = array();

                $sql = "SELECT id FROM song WHERE artist='$this->id' ORDER BY RAND() LIMIT " . rand(1,$this->songs);
                $db_results = mysql_query($sql, dbh());

                while ($r = mysql_fetch_array($db_results)) {
                        $results[] = $r[0];
                }

                return $results;

        } // get_random_songs

	/*!
		@function get_count
		@discussion gets the album and song count of 
			this artist
	*/
	function get_count() { 

		/* Define vars */
		$songs = 0;
		$albums = 0;

		$sql = "SELECT COUNT(song.id) FROM song WHERE song.artist='$this->id' GROUP BY song.album";
		$db_results = mysql_query($sql, dbh());

		while ($r = mysql_fetch_array($db_results)) { 
			$songs += $r[0];
			$albums++;
		}
		
		/* Set Object Vars */
		$this->songs = $songs;
		$this->albums = $albums;

		return true;

	} // get_count

	/*!
		@function format_artist
        	@discussion this function takes an array of artist
	                information and reformats the relevent values
	                so they can be displayed in a table for example
	                it changes the title into a full link.
	*/
	function format_artist() {

		/* Combine prefix and name, trim then add ... if needed */
                $name = truncate_with_ellipse(trim($this->prefix . " " . $this->name));

		$this->f_name = $this->name;
		$this->full_name = trim($this->prefix . " " . $this->name);
		//FIXME: This shouldn't be set like this, f_name should be like this
	        $this->link = "<a href=\"" . conf('web_path') . "/artists.php?action=show&amp;artist=" . $this->id . "\" title=\"" . $this->full_name . "\">" . 
				$name . "</a>";
		$this->name = $this->link;
	        return $artist;

	} // format_artist
	

	/*!
		@function show_albums
		@discussion displays the show albums by artist page
	*/
	function show_albums() { 

	        /* Set Vars */
	        $web_path = conf('web_path');


	        $albums = $this->get_albums();
	        $this->format_artist();
		$artist = $this;

	        require (conf('prefix') . "/templates/show_artist.inc");

	} // show_albums

	
} //end of artist class

?>