+# Copyright (C) 2018 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+use strict;
+use warnings;
+use Test::More;
+
+# Integration tests for HTTP cloning + mirroring
+foreach my $mod (qw(Plack::Util Plack::Builder Danga::Socket
+ HTTP::Date HTTP::Status Search::Xapian DBD::SQLite)) {
+ eval "require $mod";
+ plan skip_all => "$mod missing for v2mirror.t" if $@;
+}
+use File::Temp qw/tempdir/;
+use IO::Socket;
+use POSIX qw(dup2);
+use PublicInbox::V2Writable;
+use PublicInbox::MIME;
+use PublicInbox::Config;
+use Fcntl qw(FD_CLOEXEC F_SETFD F_GETFD);
+# FIXME: too much setup
+my $tmpdir = tempdir('pi-v2mirror-XXXXXX', TMPDIR => 1, CLEANUP => 1);
+my $script = 'blib/script/public-inbox';
+my $pi_config = "$tmpdir/config";
+{
+ open my $fh, '>', $pi_config or die "open($pi_config): $!";
+ print $fh <<"" or die "print $pi_config: $!";
+[publicinbox "v2"]
+ mainrepo = $tmpdir/in
+ address = test\@example.com
+
+ close $fh or die "close($pi_config): $!";
+}
+local $ENV{PI_CONFIG} = $pi_config;
+
+my $cfg = PublicInbox::Config->new($pi_config);
+my $ibx = $cfg->lookup('test@example.com');
+ok($ibx, 'inbox found');
+$ibx->{version} = 2;
+my $v2w = PublicInbox::V2Writable->new($ibx, 1);
+ok $v2w, 'v2w loaded';
+$v2w->{parallel} = 0;
+my $mime = PublicInbox::MIME->new(<<'');
+From: Me <me@example.com>
+To: You <you@example.com>
+Subject: a
+Date: Thu, 01 Jan 1970 00:00:00 +0000
+
+for my $i (1..9) {
+ $mime->header_set('Message-ID', "<$i\@example.com>");
+ $mime->header_set('Subject', "subject = $i");
+ ok($v2w->add($mime), "add msg $i OK");
+}
+$v2w->barrier;
+
+my %opts = (
+ LocalAddr => '127.0.0.1',
+ ReuseAddr => 1,
+ Proto => 'tcp',
+ Listen => 1024,
+);
+my ($sock, $pid);
+END { kill 'TERM', $pid if defined $pid };
+
+$! = 0;
+$sock = IO::Socket::INET->new(%opts);
+ok($sock, 'sock created');
+my $fl = fcntl($sock, F_GETFD, 0);
+$pid = fork;
+if ($pid == 0) {
+ # pretend to be systemd
+ fcntl($sock, F_SETFD, $fl &= ~FD_CLOEXEC);
+ dup2(fileno($sock), 3) or die "dup2 failed: $!\n";
+ $ENV{LISTEN_PID} = $$;
+ $ENV{LISTEN_FDS} = 1;
+ exec "$script-httpd", "--stdout=$tmpdir/out", "--stderr=$tmpdir/err";
+ die "FAIL: $!\n";
+}
+ok(defined $pid, 'forked httpd process successfully');
+my ($host, $port) = ($sock->sockhost, $sock->sockport);
+$sock = undef;
+
+my @cmd = (qw(git clone --mirror -q), "http://$host:$port/v2/0",
+ "$tmpdir/m/git/0.git");
+
+is(system(@cmd), 0, 'cloned OK');
+ok(-d "$tmpdir/m/git/0.git", 'mirror OK');;
+
+@cmd = ("$script-init", '-V2', 'm', "$tmpdir/m", 'http://example.com/m',
+ 'alt@example.com');
+is(system(@cmd), 0, 'initialized public-inbox -V2');
+is(system("$script-index", "$tmpdir/m"), 0, 'indexed');
+
+my $mibx = { mainrepo => "$tmpdir/m", address => 'alt@example.com' };
+$mibx = PublicInbox::Inbox->new($mibx);
+is_deeply([$mibx->mm->minmax], [$ibx->mm->minmax], 'index synched minmax');
+
+for my $i (10..15) {
+ $mime->header_set('Message-ID', "<$i\@example.com>");
+ $mime->header_set('Subject', "subject = $i");
+ ok($v2w->add($mime), "add msg $i OK");
+}
+$v2w->barrier;
+is(system('git', "--git-dir=$tmpdir/m/git/0.git", 'fetch', '-q'), 0,
+ 'fetch successful');
+
+my $mset = $mibx->search->reopen->query('m:15@example.com', {mset => 1});
+is(scalar($mset->items), 0, 'new message not found in mirror, yet');
+is(system("$script-index", "$tmpdir/m"), 0, 'index updated');
+is_deeply([$mibx->mm->minmax], [$ibx->mm->minmax], 'index synched minmax');
+$mset = $mibx->search->reopen->query('m:15@example.com', {mset => 1});
+is(scalar($mset->items), 1, 'found message in mirror');
+
+# purge:
+$mime->header_set('Message-ID', '<10@example.com>');
+$mime->header_set('Subject', 'subject = 10');
+{
+ my @warn;
+ local $SIG{__WARN__} = sub { push @warn, @_ };
+ ok($v2w->purge($mime), 'purge a message');
+ my $warn = join('', @warn);
+ like($warn, qr/purge rewriting/);
+ my @subj = ($warn =~ m/^# subject .*$/mg);
+ is_deeply(\@subj, ["# subject = 10"], "only rewrote one");
+}
+
+$v2w->barrier;
+
+my $msgs = $mibx->search->{over_ro}->get_thread('10@example.com');
+my $to_purge = $msgs->[0]->{blob};
+like($to_purge, qr/\A[a-f0-9]{40,}\z/, 'read blob to be purged');
+$mset = $ibx->search->reopen->query('m:10@example.com', {mset => 1});
+is(scalar($mset->items), 0, 'purged message gone from origin');
+
+is(system('git', "--git-dir=$tmpdir/m/git/0.git", 'fetch', '-q'), 0,
+ 'fetch successful');
+{
+ open my $err, '+>', "$tmpdir/index-err" or die "open: $!";
+ my $ipid = fork;
+ if ($ipid == 0) {
+ dup2(fileno($err), 2) or die "dup2 failed: $!";
+ exec("$script-index", '--prune', "$tmpdir/m");
+ die "exec fail: $!";
+ }
+ ok($ipid, 'running index..');
+ is(waitpid($ipid, 0), $ipid, 'index --prune done');
+ is($?, 0, 'no error from index');
+ ok(seek($err, 0, 0), 'rewound stderr');
+ $err = eval { local $/; <$err> };
+ like($err, qr/discontiguous range/, 'warned about discontiguous range');
+ unlike($err, qr/fatal/, 'no scary fatal error shown');
+}
+
+$mset = $mibx->search->reopen->query('m:10@example.com', {mset => 1});
+is(scalar($mset->items), 0, 'purged message not found in mirror');
+is_deeply([$mibx->mm->minmax], [$ibx->mm->minmax], 'minmax still synced');
+for my $i ((1..9),(11..15)) {
+ $mset = $mibx->search->query("m:$i\@example.com", {mset => 1});
+ is(scalar($mset->items), 1, "$i\@example.com remains visible");
+}
+is($mibx->git->check($to_purge), undef, 'unindex+prune successful in mirror');
+
+{
+ my @warn;
+ local $SIG{__WARN__} = sub { push @warn, @_ };
+ $v2w->index_sync;
+ is_deeply(\@warn, [], 'no warnings from index_sync after purge');
+}
+
+$v2w->done;
+ok(kill('TERM', $pid), 'killed httpd');
+$pid = undef;
+waitpid(-1, 0);
+
+done_testing();
+
+1;