#!/usr/bin/perl -wT
use CGI qw(:all);
use LWP::Simple qw(get);
use strict;

print header;
my $song          = param('song');
my $directory     = "insert_directory_here";
my $historylength = 5;
my $pass          = "pass";

my $url       = "";
my $result    = "";
my $songentry = $directory . $song;

#get the current position of the playing song 0=first song, 1=second song, etc
$url    = "http://localhost:4800/getlistpos?p=$pass";
$result = get($url);
if ( $result > $historylength ) {
    my $numbertotrim = ( $result - $historylength );
    for ( my $i = 1 ; $i == $numbertotrim ; $i++ ) {
        $url    = "http://localhost:4800/deletepos?p=$pass&index=0";
        $result = get($url);
        if ( $result != 1 ) {
            $i = $numbertotrim;
        }
    }
}

# Change the working directory for sanity
$url    = "http://localhost:4800/chdir?p=$pass&dir=\"insert_directory_here\"";
$result = get($url);
if ( $result == 0 ) {
    &htmlsub("There was an error handling your request.");
}

# Load the list
$url    = "http://localhost:4800/getplaylistfile?p=$pass&delim=;";
$result = get($url);
if ( $result eq 0 ) {
    &htmlsub("There was an error handling your request.");
}
else {
    my @songs = split( ';', $result );
    my $playlistentry = "";
    foreach $playlistentry (@songs) {
        if ( $songentry eq $playlistentry ) {
            &htmlsub("That song is already in the playlist.");
        }
    }
}

#queue it up, if there are no precedents
$url    = "http://localhost:4800/playfile?p=$pass&file=" . $songentry;
$result = get($url);
if ( $result == 0 ) {
    &htmlsub("There was an error handling your request.");
}
else
{    # report success/failure to queue, possibly name the place it is queued in?
    &htmlsub("The song you requested has been queued.");
}

sub htmlsub {    # this is where you format the HTML
    print $_[0];
    print "<BR>";
    exit(0);
}