# Module of TWiki Enterprise Collaboration Platform, http://TWiki.org/
#
# Copyright (C) 2000-2018 Peter Thoeny, peter[at]thoeny.org
# and TWiki Contributors. All Rights Reserved. TWiki Contributors
# are listed in the AUTHORS file in the root of this distribution.
# NOTE: Please extend that file, not this notice.
#
# Additional copyrights apply to some or all of the code in this
# file as follows:
#
# 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 3
# of the License, or (at your option) any later version. For
# more details read LICENSE in the root of this distribution.
#
# 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.
#
# As per the GPL, removal of this notice is prohibited.

package TWiki::Configure::Checkers::WorkingDir;
use base 'TWiki::Configure::Checker';

use strict;

sub check {
    my $this = shift;

    my $mess = $this->guessMajorDir('WorkingDir', 'working', 1);
    $TWiki::cfg{WorkingDir} =~ s#[/\\]+$##;

    unless (-d "$TWiki::cfg{WorkingDir}") {
        mkdir("$TWiki::cfg{WorkingDir}") ||
          return $this->ERROR("$TWiki::cfg{WorkingDir} does not exist, and I can't create it: $!");
        $mess .= $this->NOTE("Created $TWiki::cfg{WorkingDir}");
    }

    unless (-d "$TWiki::cfg{WorkingDir}/tmp") {
        if (-e "$TWiki::cfg{WorkingDir}/tmp") {
            $mess .= $this->ERROR("$TWiki::cfg{WorkingDir}/tmp already exists, but is not a directory");
        } elsif (!mkdir("$TWiki::cfg{WorkingDir}/tmp", '1777')) {
            $mess .= $this->ERROR("Could not create $TWiki::cfg{WorkingDir}/tmp");
        } else {
            $mess .= $this->NOTE("Created $TWiki::cfg{WorkingDir}/tmp");
        }
    }

    unless (-d "$TWiki::cfg{WorkingDir}/work_areas") {
        if (-e "$TWiki::cfg{WorkingDir}/work_areas") {
            $mess .= $this->ERROR("$TWiki::cfg{WorkingDir}/work_areas already exists, but is not a directory");
        } elsif (!mkdir("$TWiki::cfg{WorkingDir}/work_areas")) {
            $mess .= $this->ERROR("Could not create $TWiki::cfg{WorkingDir}/work_areas");
        } else {
            $mess .= $this->NOTE("Created $TWiki::cfg{WorkingDir}/work_areas");
        }
    }

    # Automatic upgrade of work_areas
    my $existing = $TWiki::cfg{RCS}{WorkAreaDir} || '';
    $existing =~ s/\$TWiki::cfg(\{\w+\})+/eval "$TWiki::cfg$1"/ge;
    if ($existing && -d $existing) {
        # Try and move the contents of the old workarea
        my $e = $this->copytree(
            $existing, "$TWiki::cfg{WorkingDir}/work_areas");
        if ($e) {
            $mess .= $this->ERROR($e);
        } else {
            $mess .= $this->WARN("
You have an existing {RCS}{WorkAreaDir} ($TWiki::cfg{RCS}{WorkAreaDir}),
so I have copied the contents of that directory into the new
$TWiki::cfg{WorkingDir}/work_areas. You should delete the old
$TWiki::cfg{RCS}{WorkAreaDir} when you are happy with
the upgrade.");
            delete( $TWiki::cfg{RCS}{WorkAreaDir} );
        }
    }

    unless (-d "$TWiki::cfg{WorkingDir}/registration_approvals") {
        if (-e "$TWiki::cfg{WorkingDir}/registration_approvals") {
            $mess .= $this->ERROR("$TWiki::cfg{WorkingDir}/registration_approvals already exists, but is not a directory");
        } elsif (!mkdir("$TWiki::cfg{WorkingDir}/registration_approvals")) {
              $mess .= $this->ERROR("Could not create $TWiki::cfg{WorkingDir}/registration_approvals");
        }
    }

    my $e = $this->checkTreePerms( $TWiki::cfg{WorkingDir}, 'rw' );
    $mess .= $this->ERROR($e) if $e;

    return $mess;
}

1;