#!/usr/bin/perl
# ex:ts=8 sw=4:
# $OpenBSD: pkg_delete,v 1.93 2005/09/07 14:01:59 jmc Exp $
#
# Copyright (c) 2003-2004 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

use strict;
use warnings;
use OpenBSD::Getopt;
use OpenBSD::PackingList;
use OpenBSD::PackingOld;
use OpenBSD::RequiredBy;
use OpenBSD::Error;
use OpenBSD::ProgressMeter;
use OpenBSD::Interactive;
use OpenBSD::Delete;
use OpenBSD::PackageInfo;

our %forced = ();
our $not;

set_usage('pkg_delete [-cIinqvx] [-B pkg-destdir] [-F keywords] pkg-name [...]');
our ($opt_v, $opt_D, $opt_d, $opt_n, $opt_q, $opt_p, $opt_c, $opt_L, $opt_B, $opt_I, $opt_i, $opt_x);

$opt_v = 0;

try { 
	getopts('vchixDdnf:F:qpS:L:B:I',
	    {'v' => sub {++$opt_v;},
	     'h' => sub { Usage(); },
	     'F' => sub { 
			    for my $o (split/,/, shift) { 
				    $forced{$o} = 1;
			    }
		    },
	     'f' => sub { 
			    for my $o (split/,/, shift) { 
				    $forced{$o} = 1;
			    }
	    	}}); 
} catchall {
	Usage($_);
};

if ($opt_D) {
	$opt_I = 1;
}
$opt_B = $ENV{'PKG_DESTDIR'} unless defined $opt_B;
$opt_B = '' unless defined $opt_B;
if ($opt_B ne '') {
	$opt_B.='/' unless $opt_B =~ m/\/$/;
}
$ENV{'PKG_DESTDIR'} = $opt_B;

$opt_L = '/usr/local' unless defined $opt_L;

if (defined $opt_p) {
	Usage "Option p is obsolete";
}
if (defined $opt_d) {
	Usage "Option d is obsolete";
}

my %done;
my $removed;

try {
my $state = new OpenBSD::Error;
$state->{not} = $opt_n;
# XXX RequiredBy
$not = $opt_n;
$state->{quick} = $opt_q;
$state->{verbose} = $opt_v >= 2;
$state->{very_verbose} = $opt_v;
$state->{beverbose} = $opt_n || ($opt_v >= 2);
$state->{extra} = $opt_c;
$state->{dont_run_scripts} = $opt_I;
$state->{forced} = \%forced;
$state->{destdir} = $opt_B;
$state->{interactive} = $opt_i;
if ($opt_B eq '') {
    $state->{destdirname} = '';
} else {
    $state->{destdirname} = '${PKG_DESTDIR}';
}

$ENV{'PKG_DELETE_EXTRA'} = $state->{extra} ? "Yes" : "No";

lock_db($opt_n);
if (!$opt_x && !$state->{beverbose}) {
	OpenBSD::ProgressMeter::enable();
}

if ($< && !$forced{nonroot}) {
	if ($state->{not}) {
		Warn "$0 should be run as root\n";
	} else {
		Fatal "$0 must be run as root";
	}
}

# First, resolve pkg names

my @realnames;
my $bad;

OpenBSD::PackageInfo::solve_installed_names(\@ARGV, \@realnames, 
    "(removing them all)", $state);

my @todo = OpenBSD::RequiredBy->compute_closure(@realnames);

if (@todo > @realnames) {
	my %extra_rm = map {($_,1)} @todo;
	for my $p (@realnames) {
		delete $extra_rm{$p};
	}
	print "Can't remove ", join(' ', @ARGV), " without also removing:\n",
	    join(' ', keys(%extra_rm)), "\n";
	my $them = keys(%extra_rm) > 1 ? 'them' : 'it';
	if ($forced{dependencies} or 
	    OpenBSD::Interactive::confirm("Do you want to remove $them as well", $state->{interactive}, 0)) {
		print "(removing $them as well)\n";
		push(@realnames, keys(%extra_rm));
	} else {
		$bad = 1;
	}
}

if ($bad) {
	exit(1);
}

eval {
# and finally, handle the removal
{ do {
	$removed = 0;
	DELETE: for my $pkgname (@todo) {
		next if $done{$pkgname};
		unless (is_installed($pkgname)) {
			print "$pkgname was not installed\n";
			$done{$pkgname} = 1;
			$removed++;
			next;
		}
		my $r = OpenBSD::RequiredBy->new($pkgname);
		if ($r->list() > 0) {
			if ($forced{baddepend}) {
				for my $p ($r->list()) {
					if ($done{$p}) {
						$r->delete($p);
					} else {
						next DELETE;
					}
				}
			} else {
				next;
			}
		}
		if (!OpenBSD::ProgressMeter::set_header($pkgname)) {
			print $opt_n ? "Pretending to delete " : "Deleting ", 
			    "$pkgname\n";
		}
		$state->set_pkgname($pkgname);
		OpenBSD::Delete::delete_package($pkgname, $state);
		delete_installed($pkgname);
		$done{$pkgname} = 1;
		$removed++;
	}
} while ($removed); } };

my $dielater = $@;

OpenBSD::PackingElement::Lib::ensure_ldconfig($state);
# delayed directory/user/group removal
if (defined $state->{dirs_to_rm} or defined $state->{users_to_rm} or
	defined $state->{groups_to_rm}) {
	require OpenBSD::SharedItems;

	OpenBSD::SharedItems::cleanup($state) unless $state->{not};
}

OpenBSD::PackingElement::Fontdir::finish_fontdirs($state);

if ($state->{beverbose}) {
	OpenBSD::Vstat::tally();
}
$state->delayed_output();
rethrow $dielater;
} catch {
	print STDERR "$0: $_\n";
	exit(1);
};