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package Iurt::Queue;

use base qw(Exporter);
use File::Copy 'move';
use File::Path 'make_path';
use Iurt::Config qw(get_mandatory_arch);
use Iurt::File qw(read_line);
use Iurt::Util qw(plog);
use MDK::Common qw(cat_ find member partition);
use strict;

our @EXPORT = qw(
    get_upload_tree_state
    cleanup_failed_build
);

sub apply_to_upload_tree {
    my ($tree_root, $func) = @_;

    # Squash double slashes for cosmetics
    $tree_root =~ s!/+!/!g;

    opendir(my $dir, $tree_root);
    plog('INFO', "check dir: $tree_root");

    foreach my $f (readdir $dir) {
	$f =~ /^\.{1,2}$/ and next;
	if (-d "$tree_root/$f") {
	    plog('DEBUG', "checking target $tree_root/$f");
	    opendir my $target_dir, "$tree_root/$f";

	    foreach my $m (readdir $target_dir) {
		$m =~ /^\.{1,2}$/ and next;
		if (-d "$tree_root/$f/$m") {
		    plog('DEBUG', "checking media $tree_root/$f/$m");
		    opendir my $media_dir, "$tree_root/$f/$m";

		    foreach my $s (readdir $media_dir) {
			$s =~ /^\.{1,2}$/ and next;
			if (-d "$tree_root/$f/$m/$s") {
			    if ($func) {
				opendir my $submedia_dir, "$tree_root/$f/$m/$s";
				foreach my $r (readdir $submedia_dir) {
				    $r =~ /^\.{1,2}$/ and next;
				    $func->($tree_root, $f, $m, $s, $r);
				}
			    }
			}
		    }
		}
	    }
	}
    }
}
 
sub cleanup_failed_build {
    my ($todo_dir, $done_dir, $fail_dir, $prefix, $ent, $arch, $config) = @_;

    my $mandatory_arch = get_mandatory_arch($config, $ent->{target});
    my $fatal_failure = member($arch, @$mandatory_arch) || $arch eq 'noarch';

    my ($failed_rpms, $kept_rpms);
    if ($fatal_failure) {
	plog('DEBUG', "failure is for mandatory arch $arch, aborting build");
	$failed_rpms = $ent->{rpms};
    } else {
	plog('DEBUG', "failure is for non-mandatory arch $arch, keeping other builds going");
	($failed_rpms, $kept_rpms) = partition { /\.$arch\.rpm$/ } @{$ent->{rpms}};
    }

    foreach my $rpm (@$failed_rpms) {
	my $file = "$done_dir/${prefix}_$rpm";
	plog('DEBUG', "moving built rpm $file to $fail_dir/");
	move($file, "$fail_dir/${prefix}_$rpm");
    }

    if (!$fatal_failure) {
	# keep rpms for other architectures
	$ent->{rpms} = $kept_rpms;
	return;
    }

    # abort all remaining builds
    delete $ent->{rpms};

    foreach my $srpm (@{$ent->{srpms}}) {
	my $file = "$todo_dir/${prefix}_$srpm";
	plog('DEBUG', "moving $file to $fail_dir/");
	move($file, "$fail_dir/${prefix}_$srpm");
	# If one arch has been generated, we also have a src.rpm in done
	$file = "$done_dir/${prefix}_$srpm";
	if (-f $file) {
	    plog('DEBUG', "deleting $file");
	    unlink $file;
	}
    }

    if (-d "$done_dir/$prefix") {
	make_path("$fail_dir/$prefix");
	foreach my $file (glob "$done_dir/$prefix/*") {
	    plog('DEBUG', "moving $file to $fail_dir/$prefix/");
	    move($file, "$fail_dir/$prefix/");
	}
    }
}

sub get_upload_tree_state {
    our ($config) = @_;

    our %pkg_tree;
    my $todo = "$config->{queue}/todo";
    my $done = "$config->{queue}/done";

    sub todo_func {
	my ($todo, $f, $m, $s, $r) = @_;

	my $media = "$m/$s";

	if ($r =~ /(\d{14}\.(\w+)\.\w+\.\d+)_(.*\.src\.rpm)$/) {
	    my ($prefix, $user, $srpm) = ($1, $2, $3);

	    plog('DEBUG', "found srpm $srpm ($prefix)");
	    $pkg_tree{$prefix}{media}{$media}{path} = "/$f/$m/$s";
	    $pkg_tree{$prefix}{target} = $f;
	    $pkg_tree{$prefix}{user} = $user;
	    push @{$pkg_tree{$prefix}{srpms}} , $srpm;
	    my ($name) = $srpm =~ /(.*)-[^-]+-[^-]+\.src\.rpm$/;

	    $pkg_tree{$prefix}{srpm_name}{$name} = $srpm;
	}

	if ($r =~ /(\d{14}\.\w+\.\w+\.\d+)_([\w-]+)\.(\w+)\.(\w+)\.(\d{14})\.(\d+)\.lock$/) {
	    my ($prefix, $arch, $bot, $host, $date, $pid) = ($1, $2, $3, $4, $5, $6);

	    # Set path here too has we may have a lock without the src.rpm
	    $pkg_tree{$prefix}{media}{$media}{path} = "/$f/$m/$s";

	    $arch = $config->{arch_translation}{$arch} if $config->{arch_translation}{$arch};
	    plog('DEBUG', "found lock on $host/$arch for $prefix");

	    if ($arch =~ /noarch/) {
		plog('DEBUG', "... and $prefix is noarch");
		$pkg_tree{$prefix}{media}{$media}{arch}{noarch} = 1;
		$arch =~ s/-.*//;
	    }

	    $pkg_tree{$prefix}{media}{$media}{arch}{$arch} = 1;

	    my $time = read_line("$todo/$f/$m/$s/$r");
	    $time = (split ' ', $time)[2];
	    push @{$pkg_tree{$prefix}{media}{$media}{bot}}, {
		bot => $bot,
		host => $host,
		date => $date,
		pid => $pid,
		'arch' => $arch,
		'time' => $time
	    };
	}

	if ($r =~ /(\d{14}\.\w+\.\w+\.\d+)_.*\.deps$/) {
	    my $prefix = $1;
	    my @deps = map { chomp(); $_ } cat_("$todo/$f/$m/$s/$r");
	    plog('DEBUG', "Adding dependency $_ ($prefix)") foreach @deps;

	    $pkg_tree{$prefix}{deps} = \@deps;
	}
    }

    sub done_func {
	my ($_todo, $f, $m, $s, $r) = @_;

	my $media = "$m/$s";

	if ($r =~ /^(\d{14}\.\w+\.\w+\.\d+)([_.].+)$/) {
	    my ($prefix, $suffix) = ($1, $2);
	    $pkg_tree{$prefix}{media}{$media}{path} = "/$f/$m/$s";
	    if ($suffix =~ /^_(.*\.([^.]+)\.rpm)$/) {
		my ($rpm, $arch) = ($1, $2);
		$arch = $config->{arch_translation}{$arch} if $config->{arch_translation}{$arch};
		plog('DEBUG', "found already built rpm $rpm ($prefix) for media $media");
		$pkg_tree{$prefix}{target} = $f;
		if ($arch eq 'src') {
		    $pkg_tree{$prefix}{media}{$media}{done_arch}{src} = 1;
		}
		push @{$pkg_tree{$prefix}{media}{$media}{rpms}} , $rpm;
		push @{$pkg_tree{$prefix}{rpms}} , $rpm;
	    } elsif ($suffix =~ /^_(\w+)\.(\w+)$/) {
		my ($arch, $result) = ($1, $2);
		plog('DEBUG', "found .$result ($prefix) for $arch");
		if ($result eq 'done') {
		    $pkg_tree{$prefix}{media}{$media}{done_arch}{$arch} = 1;
		} elsif ($result eq 'excluded') {
		    $arch = $config->{arch_translation}{$arch} if $config->{arch_translation}{$arch};
		    $pkg_tree{$prefix}{media}{$media}{excluded_arch}{$arch} = 1;
		} elsif ($result eq 'fail') {
		    $pkg_tree{$prefix}{media}{$media}{failed_arch}{$arch} = 1;
		} else {
		    plog('WARNING', "unknown state $arch.$result for $prefix");
		}
	    } elsif ($suffix =~ /^\.(\w+)$/) {
		my $action = $1;
		if ($action eq 'upload') {
		    plog('DEBUG', "found already uploaded ($prefix)");
		    $pkg_tree{$prefix}{media}{$media}{uploaded} = 1;
		}
	    }
	}
    }

    apply_to_upload_tree($done, \&done_func);
    apply_to_upload_tree($todo, \&todo_func);

    return %pkg_tree;
}