#!/usr/bin/perl

# Copyright 2020 Simon McVittie
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# 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, see <https://www.gnu.org/licenses/>.

use strict;
use warnings;

use Cwd qw(getcwd);
use File::Temp qw(tempdir);
use IPC::Run qw(run);
use Test::More;

# Disable l10n: we look for specific messages
$ENV{LC_ALL} = 'C.UTF-8';

my $srcdir = getcwd;
my $top_srcdir = getcwd . '/..';
my $mass_bug = "$top_srcdir/scripts/mass-bug.pl";

if (defined $ARGV[0] && $ARGV[0] eq '--installed') {
    $mass_bug = 'mass-bug';
}

my $tmp = tempdir(CLEANUP => 1);

sub verbose_run {
    my $argv = shift;
    diag("Running: @{$argv}");
    return run($argv, @_);
}

sub capture {
    my $output;
    my $argv = shift;
    ok(verbose_run($argv, '>', \$output), "@{$argv}");
    chomp $output;
    return $output;
}

my $stdout;
my $stderr;

diag('Help');
$stdout = capture([
    $mass_bug,
    '--help',
]);
like($stdout, qr{Usage:});

diag('Version');
$stdout = capture([
    $mass_bug,
    '--version',
]);
like($stdout, qr{devscripts package});

diag('Basic use');
$stdout = capture([
    $mass_bug,
    '--no-conf',
    '--subject=Is broken',
    "$srcdir/mass-bug/template",
    "$srcdir/mass-bug/one-package",
]);
like($stdout, qr{^Subject: test-package: Is broken$}m);
like($stdout, qr{^Package: test-package$}m);
like($stdout, qr{^Version: 1\.2-3$}m);
like($stdout, qr{^test-package has a bug\. Please fix\.$}m);
like($stdout, qr{^This long line gets word-wrapped because}m);
unlike($stdout, qr{text/plain; format=flowed never really took off\.$}m);
like($stdout, qr{^These short lines also get wrapped\.$}m);
like($stdout, qr{^test-package version=1\.2-3$}m);
like($stdout, qr{^test-package epoch=$}m);
like($stdout, qr{^test-package upstream=1\.2$}m);
like($stdout, qr{^test-package revision=-3$}m);
like($stdout, qr{^test-package reassembled=1\.2-3$}m);
like($stdout, qr{^-- $}m);
like($stdout, qr{^This signature does not get word-wrapped because it is a signature, even though it is longer than a line ought to be\.$}m);

diag('Subject is mandatory');
ok(! verbose_run([
    $mass_bug,
    '--no-conf',
    "$srcdir/mass-bug/template",
    "$srcdir/mass-bug/one-package",
], '>', \$stdout, '2>', \$stderr));
isnt($?, 0);
like($stderr, qr{You must specify a subject}m);
is($stdout, '');

diag('Various options');
$stdout = capture([
    $mass_bug,
    '--no-conf',
    '--subject=Is broken',
    '--source',
    '--tags=ftbfs sid',
    '--user=me@example.com',
    '--usertags=bad wrong',
    '--control=block 123456 by -1',
    '--control=block -1 by 789012',
    '--no-wrap',
    "$srcdir/mass-bug/template",
    "$srcdir/mass-bug/one-package",
]);
like($stdout, qr{^Subject: test-package: Is broken$}m);
like($stdout, qr{^Source: test-package$}m);
unlike($stdout, qr{^Package: test-package$}m);
like($stdout, qr{^test-package has a bug\. Please fix\.$}m);
like($stdout, qr{^Tags: ftbfs sid$}m);
like($stdout, qr{^User: me\@example\.com$}m);
like($stdout, qr{^Usertags: bad wrong$}m);
like($stdout, qr{^Control: block 123456 by -1$}m);
like($stdout, qr{^Control: block -1 by 789012$}m);
like($stdout, qr{^This long line gets word-wrapped because text/plain; format=flowed never really took off\.$}m);
unlike($stdout, qr{^These short lines also get wrapped\.$}m);

diag('Version numbers');
$stdout = capture([
    $mass_bug,
    '--no-conf',
    '--subject=Is broken',
    "$srcdir/mass-bug/template",
    "$srcdir/mass-bug/packages",
]);
like($stdout, qr{^native-package version=1\.0$}m);
like($stdout, qr{^native-package epoch=$}m);
like($stdout, qr{^native-package upstream=1\.0$}m);
like($stdout, qr{^native-package revision=$}m);
like($stdout, qr{^native-package reassembled=1\.0$}m);
like($stdout, qr{^upstream-package version=1\.2-3$}m);
like($stdout, qr{^upstream-package epoch=$}m);
like($stdout, qr{^upstream-package upstream=1\.2$}m);
like($stdout, qr{^upstream-package revision=-3$}m);
like($stdout, qr{^upstream-package reassembled=1\.2-3$}m);
like($stdout, qr{^epoch-native-package version=1:2\.3$}m);
like($stdout, qr{^epoch-native-package epoch=1:$}m);
like($stdout, qr{^epoch-native-package upstream=2\.3$}m);
like($stdout, qr{^epoch-native-package revision=$}m);
like($stdout, qr{^epoch-native-package reassembled=1:2\.3$}m);
like($stdout, qr{^epoch-package version=1:2\.3-4\.5$}m);
like($stdout, qr{^epoch-package epoch=1:$}m);
like($stdout, qr{^epoch-package upstream=2\.3$}m);
like($stdout, qr{^epoch-package revision=-4\.5$}m);
like($stdout, qr{^epoch-package reassembled=1:2\.3-4\.5$}m);

done_testing;