#!/usr/bin/perl
#
#
# Copyright (c)2020 seasharp@libre.audio
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use strict;
use warnings;

my $YouTubeRSSFormat = "/feeds/videos.xml?";
my $ChannelFormat = "${YouTubeRSSFormat}channel_id=";
my $UserFormat = "${YouTubeRSSFormat}user=";
my $PlaylistFormat = "${YouTubeRSSFormat}playlist_id=";

print "Please enter the YouTube Channel URL: ","\n";

while (<>) {
	my $YouTubeURL = $_ if $_ =~ m[http[s]?:\/\/.*\.youtube\.com\/(channel|user|[a-zA-Z=?]*[?&]list=PL).*$];
	my $OutputURL;
	if ($YouTubeURL =~ /.*\/channel\/.*$/) {
		print "This is a Channel\n";
		$OutputURL = $YouTubeURL =~ s/\/channel\//$ChannelFormat/r
	} elsif ($YouTubeURL =~ /.*\/user\/.*$/) {
		print "This is a User\n";
		$OutputURL = $YouTubeURL =~ s/\/user\//$UserFormat/r
	} elsif ($YouTubeURL =~ /.*\/[a-zA-Z?=]*[?&]list=PL.*$/) {
		print "This is a Playlist\n";
		$OutputURL = $YouTubeURL =~ s/\/[a-zA-Z=?]*[?&]list=/$PlaylistFormat/r
	} else { print "No idea what this is.\n"; }
	print $OutputURL;
}
#if ($YouTubeURL =~ m[http[s]?:\/\/.*\.youtube\.com\/(channel|user|playlist&list=pl).*$])
## Channel uuid match expression

#	$YouTubeURL =~ s/channel/something/;
#	print "Match: ",$YouTubeURL,"\n";
#} else { print "No match\n";}