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package Iurt::Emi;

use base qw(Exporter);
use File::Path qw(make_path);
use Iurt::Config qw(get_author_email get_mandatory_arch get_target_arch);
use Iurt::Mail qw(sendmail);
use Iurt::Queue qw(check_if_all_archs_processed);
use Iurt::Util qw(plog);
use MDK::Common::File qw(touch);
use MDK::Common::Func qw(find);
use MDK::Common::DataStructure qw(difference2);
use strict;

our @EXPORT = qw(
    find_prefixes_ready_to_upload
    record_uploaded_packages
    upload_prefix_in_media
);

sub find_prefixes_ready_to_upload {
    my ($config, %pkg_tree) = @_;

    # $targets{$target}{$media}{arch_finisher}{$arch}: prefix on which we need to actions to get this arch updated
    # $targets{$target}{$media}{to_upload}: list of prefixes to upload
    my %targets;

    foreach my $prefix (sort keys %pkg_tree) {
	my $target = $pkg_tree{$prefix}{target};
	my $mandatory_arch = get_mandatory_arch($config, $target);

	plog('NOTIFY', "processing $prefix");

	my $ok = 1;

	foreach my $media (keys %{$pkg_tree{$prefix}{media}}) {
	    my @wanted_archs = defined($pkg_tree{$prefix}{media}{$media}{done_arch}{noarch}) ? 'noarch' : @$mandatory_arch;
	    my $path = $pkg_tree{$prefix}{media}{$media}{path};
	    my %missing;

	    plog('DEBUG', "... in $path");

	    if (! $pkg_tree{$prefix}{media}{$media}{rpms}) {
		$ok = 0;
		last;
	    }

	    if ($pkg_tree{$prefix}{media}{$media}{uploaded}) {
		plog('INFO', "package already uploaded for mandatory arches, proceeding");
		next;
	    }

	    foreach my $m (@wanted_archs, 'src') {
		$pkg_tree{$prefix}{media}{$media}{excluded_arch}{$m} and next;
		my $x = "yes";
		if (!$pkg_tree{$prefix}{media}{$media}{done_arch}{$m}) {
		    $missing{$m} = 1;
		    $x = "no";
		    $ok = 0;
		}
		plog('INFO', " mandatory architecture $m present: $x");
	    }

	    unless ($ok) {
		plog('INFO', "mandatory arch", join(' ', keys %missing),
		     "missing for $media, waiting");
		next;
	    }
	}
	next unless $ok;

	#
	# All mandatory archs found, mark for upload
	#
	foreach my $media (keys %{$pkg_tree{$prefix}{media}}) {
	    $targets{$target}{$media} ||= { 'arch_finisher' => {}, 'to_upload' => [] };

	    push @{$targets{$target}{$media}{to_upload}}, $prefix;

	    # We already have found universal finisher in that media, we're fine
	    next if exists $targets{$target}{$media}{arch_finisher}{noarch};

	    my %arches_to_upload;
	    foreach (@{$pkg_tree{$prefix}{media}{$media}{rpms}}) {
		next unless /\.([^.]*)\.rpm/;
		my $arch = $1;
                next if $arch eq 'src';
		# If this is a secondary upload, noarch package will be dropped
		next if $arch eq 'noarch' && $pkg_tree{$prefix}{media}{$media}{uploaded};
		$arches_to_upload{$arch} = 1;
	    }

	    if ($arches_to_upload{noarch}) {
		# This package is noarch, genhdlist for it will touch all archs
		$targets{$target}{$media}{arch_finisher} = { 'noarch' => $prefix };
	    } else {
		my $has_new_arch = scalar(difference2([ keys %arches_to_upload ], [ keys %{$targets{$target}{$media}{arch_finisher}} ]));
		if ($has_new_arch) {
		    # We need this package to cover the new arch
		    # Set it for all, it may allow getting rid of some
		    foreach (keys %arches_to_upload) {
			$targets{$target}{$media}{arch_finisher}{$_} = $prefix;
		    }
		}
	    }
	}
    }

    return %targets;
}

sub generate_upload_command {
    my ($prefix, $media, $target, $user, $packages, $finish, $youri_file) = @_;
    # Most of this function should be in the config...
    my $base_command = "/usr/bin/perl -I/usr/share/mga-youri-submit/lib /usr/share/mga-youri-submit/bin/youri-submit --config /etc/youri/submit-upload.conf";
    my $all_posts = `$base_command --list posts $target`;
    $all_posts =~ s/\n/ /g;
    $all_posts =~ s/(^| +)/ --skip-post /g;
    $all_posts =~ s/--skip-post *$//;
    my $skip = $finish ? "" : $all_posts;
    "$base_command --verbose --define user=$user --define prefix=$prefix --define section=$media $skip $target @$packages &> $youri_file";
}

sub upload_prefix_in_media {
    my ($config, $pkg_tree, $prefix, $media, $o_finish) = @_;

    my $todo = "$config->{queue}/todo";
    my $done = "$config->{queue}/done";
    my $reject = "$config->{queue}/rejected";
    my (@packages, @duplicate_packages);
    my ($user) = $prefix =~ /\d{14}\.(\w+)\.\w+\.\d+$/;
    my $target = $pkg_tree->{$prefix}{target};
    my $youri_file = "$prefix.youri";
    if ($pkg_tree->{$prefix}{media}{$media}{uploaded})  {
        $youri_file .= "." . time();
    }

    my $path = $pkg_tree->{$prefix}{media}{$media}{path};

    plog('OK', "all mandatory archs done: $prefix");
    foreach my $rpm (@{$pkg_tree->{$prefix}{media}{$media}{rpms}}) {
	my $rpmpath = "$done$path/${prefix}_$rpm";
	if ($pkg_tree->{$prefix}{media}{$media}{uploaded})  {
	    # if already uploaded for mandatory arches, do not try to upload again src or noarch packages
	    # but still remember these duplicate files for removal
	    if (my ($type) = $rpm =~ /\.(noarch|src)\.rpm$/) {
		plog('DEBUG', "$prefix already uploaded for mandatory arches, not re-uploading $type $rpm");
		push @duplicate_packages, $rpmpath;
		next;
	    }
	}
	push @packages, $rpmpath;
	plog('OK', " uploading $rpm in $done/$path");
    }

    # When a package is not marked as noarch but only has noarch subpackages, there will be nothing
    # left to upload when it finishes building on non mandaory arch.
    return unless @packages;

    my $command = generate_upload_command($prefix, $media, $target, $user, \@packages, $o_finish, "$done$path/$youri_file");
    plog('DEBUG', "running $command");
    if (!system($command)) {
	plog('INFO', "upload succeeded");
    } else {
	# should send a mail or something
	plog('ERROR', "upload failed ($!), rejecting files in $reject$path/");
	make_path("$reject$path");
	foreach my $rpm (@{$pkg_tree->{$prefix}{media}{$media}{rpms}}) {
	    link("$done$path/${prefix}_$rpm", "$reject$path/${prefix}_$rpm") or plog('ERROR', "ERROR: link of $rpm failed ($!)");
	}
	link("$done$path/$youri_file", "$reject$path/$youri_file");

	my ($user) = $prefix =~ /\d{14}\.(\w+)\.\w+\.\d+/;
	if ($user) {
	    my @pkgs = grep { !/src\.rpm$/ } @{$pkg_tree->{$prefix}{media}{$media}{rpms}};
	    my $text = join("\n", qq(The upload of the following packages failed:\n), map { "- $_" } @pkgs) . "\n";
	    my $rpms = join(' ', @pkgs, undef);
	    my $to =  get_author_email($user) || "Unknown <$config->{admin}>";
	    $text .= "\nUpload log available in $config->{http_queue}/rejected/$path/$youri_file\n";

	    sendmail($to, undef, "Upload failed for $rpms", $text, "Emi the upload bot <$config->{admin}>", 0, $config);
	}

	# should delete the files
    }

    # delete the files which should have heen either put in queue or rejected
    unlink(@packages, @duplicate_packages);

    # unlink the sources rpm unless some non mandatory arch still need to be done
    if (check_if_all_archs_processed($media, $pkg_tree->{$prefix}, $config)) {
	foreach (@{$pkg_tree->{$prefix}{srpms}}) {
	    plog('DEBUG', "unlink $todo$path/${prefix}_$_");
	    unlink("$todo$path/${prefix}_$_");
	}
    }
}

sub record_uploaded_packages {
    my ($config, $pkg_tree, $prefix, $media) = @_;
    my $done = "$config->{queue}/done";
    my $path = $pkg_tree->{$prefix}{media}{$media}{path};

    my %arches;
    foreach my $pkg (@{$pkg_tree->{$prefix}{media}{$media}{rpms}}) {
	my ($arch) = $pkg =~ /\.([^.]*)\.rpm$/;
	$arches{$arch} = 1 unless $arch eq 'src';
    }
    # Only keep noarch if it's the only architecture
    delete $arches{'noarch'} if 1 < keys %arches;

    foreach my $arch (keys %arches) {
	touch("$done/$path/${prefix}_$arch.uploaded");
    }
    touch("$done/$path/$prefix.upload");
}