<?php
/*

 Copyright (c) 2001 - 2006 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 v2
 as published by the Free Software Foundation.

 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.


 This library handles all artist mojo

*/

/*!
	@function get_artists
	@discussion run a search, takes string,field,type and returns an array
		of results of the correct type (song, album, artist)
*/
function get_artists($sql, $action=0) {

	$db_results = mysql_query($sql, dbh());
	
	while ($r = mysql_fetch_array($db_results)) {
		$artist_info = get_artist_info($r['id']);
		if ($action ==='format') { $artist = format_artist($artist_info); }
		else { $artist = $artist_info; }
		$artists[] = $artist;
	} // end while

	return $artists;

} // get_artists

/*!
        @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($artist) {

        $web_path = conf('web_path');
        $artist['name'] = "<a href=\"$web_path/artists.php?action=show&amp;artist=" . $artist['id'] . "\">" . htmlspecialchars($artist['prefix']) . " " . htmlspecialchars($artist['name']) . "</a>";

	return $artist;

} // format_artist

/*!
	@function show_artists
	@discussion takes a match and accounts for the possiblity of a view
		then displays _many_ artists
*/
function show_artists ($match = '') {

        $dbh = dbh();

        $view = new View();
        $view->import_session_view();

        // Check for the view object...
        if ($_REQUEST['keep_view']) {
                $view->initialize();
        }

        // If there isn't a view object we need to create a new one..
        else {

		// Pull in the min object count
		$min_object_count	= conf('min_object_count');
		$min_join	= " LEFT JOIN song ON song.artist=artist.id"; 
		$min_group	= "GROUP BY song.artist HAVING COUNT(song.id) > $min_object_count"; 


                if ( isset($match) && $match != '' ) {
                        $query = "SELECT artist.id,artist.name FROM artist $min_join" .
                                " WHERE artist.name LIKE '$match%' $min_group";
                }
                else {
                        $query = "SELECT artist.id FROM `artist` $min_join $min_group";
                }

                $db_results = mysql_query($query, $dbh);
                $total_items = mysql_num_rows($db_results);
                if ($_REQUEST['match'] === "Show_all") {
                        $offset_limit = 999999;
                }
                else {
                         $offset_limit = $user->prefs['offset_limit'];
                }
                $view = new View($query,'artists.php','name',$total_items,$offset_limit);
		
        } // end if creating view object

        if (is_array($match)) {
                $artists = $match;
                $_SESSION['view_script'] = false;
        }
        $db_results = mysql_query($view->sql, $dbh);

	// Get the artist object
        while ($r = mysql_fetch_assoc($db_results)) {
		$artist = new Artist($r['id']); 	
		$artist->format(); 
		$artists[] = $artist;
        }

        if (count($artists)) {
		/* Ack horrible hack :( */
		$GLOBALS['view'] = $view;
                require conf('prefix') . '/templates/show_artists.inc.php';
        }

} // show_artists




?>
