#!/usr/bin/perl
#Copyright (c) 2008, Zane C. Bowers
#All rights reserved.
#
#Redistribution and use in source and binary forms, with or without modification,
#are permitted provided that the following conditions are met:
#
#   * Redistributions of source code must retain the above copyright notice,
#    this list of conditions and the following disclaimer.
#   * Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.
#
#THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
#ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
#WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
#IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
#INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
#BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
#DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
#LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
#THE POSSIBILITY OF SUCH DAMAGE.

use strict;
use warnings;
use Getopt::Std;
use FreeBSD::Pkgs::FindUpdates;

$Getopt::Std::STANDARD_HELP_VERSION = 1;

#version function
sub main::VERSION_MESSAGE {
        print "pkg_findupdates 0.1.0\n";
}

#print help
sub main::HELP_MESSAGE {
        print "\n".
		      "-d  Print downgraded ports.\n".
		      "-u  Print upgraded ports.\n".
			  "-r  print requirements";
}

#gets the options
my %opts=();
getopts('dur', \%opts);

if (!defined($opts{d}) && !defined($opts{u})) {
	warn('pkg_findupdates: Neither -d or -u given');
	exit 1;
}

my $pkgsupdate = FreeBSD::Pkgs::FindUpdates->new(); #finds changes
my %changes=$pkgsupdate->find();

#prints downgraded ports if needed
if ($opts{u}) {
	while(my ($name, $pkg) = each %{$changes{upgrade}}){
        print $name.' updated from "'.
        $pkg->{oldversion}.'" to "'.
        $pkg->{newversion}."\"\n";
		if ($opts{r}) {
			my $fdeps=join("\n  ", @{$pkg->{Fdeps}});
			if ($fdeps ne '') {
				print " Fdeps...\n  ".$fdeps."\n";
				if (!$fdeps =~ /\n$/) {
					print "\n";
				}
			}
			my $edeps=join("\n  ", @{$pkg->{Edeps}});
			if ($fdeps ne '') {
				print " Edeps...\n  ".$edeps."\n";
			}
			my $bdeps=join("\n  ", @{$pkg->{Bdeps}});
			if ($bdeps ne '') {
				print " Bdeps...\n  ".$bdeps."\n";
				if (!$fdeps =~ /\n$/) {
					print "\n";
				}
			}
			my $rdeps=join("\n  ", @{$pkg->{Rdeps}});
			if ($rdeps ne '') {
				print " Rdeps...\n  ".$rdeps."\n";
				if (!$fdeps =~ /\n$/) {
					print "\n";
				}
			}
			my $pdeps=join("\n  ", @{$pkg->{Pdeps}});
			if ($pdeps ne '') {
				print " Pdeps...\n  ".$pdeps."\n";

			}
		}
	}
}

#prints upgraded if needed
if ($opts{d}) {
	while(my ($name, $pkg) = each %{$changes{downgrade}}){
        print $name.' downgraded from "'.
        $pkg->{oldversion}.'" to "'.
        $pkg->{newversion}."\"\n";
		if ($opts{r}) {
			my $fdeps=join("\n  ", @{$pkg->{Fdeps}});
			if ($fdeps ne '') {
				print " Fdeps...\n  ".$fdeps."\n";
				if (!$fdeps =~ /\n$/) {
					print "\n";
				}
			}
			my $edeps=join("\n  ", @{$pkg->{Edeps}});
			if ($fdeps ne '') {
				print " Edeps...\n  ".$edeps."\n";
			}
			my $bdeps=join("\n  ", @{$pkg->{Bdeps}});
			if ($bdeps ne '') {
				print " Bdeps...\n  ".$bdeps."\n";
				if (!$fdeps =~ /\n$/) {
					print "\n";
				}
			}
			my $rdeps=join("\n  ", @{$pkg->{Rdeps}});
			if ($rdeps ne '') {
				print " Rdeps...\n  ".$rdeps."\n";
				if (!$fdeps =~ /\n$/) {
					print "\n";
				}
			}
			my $pdeps=join("\n  ", @{$pkg->{Pdeps}});
			if ($pdeps ne '') {
				print " Pdeps...\n  ".$pdeps."\n";

			}
		}
	}
}

=head1 NAME

pkg_findupdates - Finds updated packages.

=head1 SYNOPSIS

pkg_findupdates -u [B<-r>]
pkg_findupdates -d [B<-r>]
pkg_findupdates -d -u [B<-r>]

=head1 ARGUEMENTS

=head2 -u

Print updated ports.

=head2 -d

Print downgraded ports.

=head2 -r

Print depedency information.

=cut