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# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Joel Peshkin <bugreport@peshkin.net>
#                 Erik Stambaugh <erik@dasbistro.com>
#                 Tiago R. Mello <timello@async.com.br>

use strict;

package Bugzilla::Group;

use Bugzilla::Config;
use Bugzilla::Util;
use Bugzilla::Error;

###############################
##### Module Initialization ###
###############################

use constant DB_COLUMNS => qw(
    groups.id
    groups.name
    groups.description
    groups.isbuggroup
    groups.last_changed
    groups.userregexp
    groups.isactive
);

our $columns = join(", ", DB_COLUMNS);

sub new {
    my $invocant = shift;
    my $class = ref($invocant) || $invocant;
    my $self = {};
    bless($self, $class);
    return $self->_init(@_);
}

sub _init {
    my $self = shift;
    my ($param) = (@_);
    my $dbh = Bugzilla->dbh;

    my $id = $param unless (ref $param eq 'HASH');
    my $group;

    if (defined $id && detaint_natural($id)) {

        $group = $dbh->selectrow_hashref(qq{
            SELECT $columns FROM groups
            WHERE id = ?}, undef, $id);

    } elsif (defined $param->{'name'}) {

        trick_taint($param->{'name'});

        $group = $dbh->selectrow_hashref(qq{
            SELECT $columns FROM groups
            WHERE name = ?}, undef, $param->{'name'});

    } else {
        ThrowCodeError('bad_arg',
            {argument => 'param',
             function => 'Bugzilla::Group::_init'});
    }

    return undef unless (defined $group);

    foreach my $field (keys %$group) {
        $self->{$field} = $group->{$field};
    }
    return $self;
}

###############################
####      Accessors      ######
###############################

sub id           { return $_[0]->{'id'};           }
sub name         { return $_[0]->{'name'};         }
sub description  { return $_[0]->{'description'};  }
sub is_bug_group { return $_[0]->{'isbuggroup'};   }
sub last_changed { return $_[0]->{'last_changed'}; }
sub user_regexp  { return $_[0]->{'userregexp'};   }
sub is_active    { return $_[0]->{'isactive'};     }

################################
#####  Module Subroutines    ###
################################

sub ValidateGroupName {
    my ($name, @users) = (@_);
    my $dbh = Bugzilla->dbh;
    my $query = "SELECT id FROM groups " .
                "WHERE name = ?";
    if (Param('usevisibilitygroups')) {
        my @visible = (-1);
        foreach my $user (@users) {
            $user && push @visible, @{$user->visible_groups_direct};
        }
        my $visible = join(', ', @visible);
        $query .= " AND id IN($visible)";
    }
    my $sth = $dbh->prepare($query);
    $sth->execute($name);
    my ($ret) = $sth->fetchrow_array();
    return $ret;
}

sub get_all_groups {
    my $dbh = Bugzilla->dbh;

    my $group_ids = $dbh->selectcol_arrayref('SELECT id FROM groups
                                              ORDER BY isbuggroup, name');

    my @groups;
    foreach my $gid (@$group_ids) {
        push @groups, new Bugzilla::Group($gid);
    }
    return @groups;
}

1;

__END__

=head1 NAME

Bugzilla::Group - Bugzilla group class.

=head1 SYNOPSIS

    use Bugzilla::Group;

    my $group = new Bugzilla::Group(1);
    my $group = new Bugzilla::Group({name => 'AcmeGroup'});

    my $id           = $group->id;
    my $name         = $group->name;
    my $description  = $group->description;
    my $last_changed = $group->last_changed;
    my $user_reg_exp = $group->user_reg_exp;
    my $is_active    = $group->is_active;

    my $group_id = Bugzilla::Group::ValidateGroupName('admin', @users);
    my @groups = Bugzilla::get_all_groups();

=head1 DESCRIPTION

Group.pm represents a Bugzilla Group object.

=head1 METHODS

=over

=item C<new($param)>

 Description: The constructor is used to load an existing group
              by passing a group id or a hash with the group name.

 Params:      $param - If you pass an integer, the integer is the
                       group id from the database that we want to
                       read in. If you pass in a hash with 'name'
                       key, then the value of the name key is the
                       name of a product from the DB.

 Returns:     A Bugzilla::Group object.

=back

=head1 SUBROUTINES

=over

=item C<ValidateGroupName($name, @users)>

 Description: ValidateGroupName checks to see if ANY of the users
              in the provided list of user objects can see the
              named group.

 Params:      $name - String with the group name.
              @users - An array with Bugzilla::User objects.

 Returns:     It returns the group id if successful
              and undef otherwise.

=item C<get_all_groups()>

 Description: Returns all groups available, including both
              system groups and bug groups.

 Params:      none

 Returns:     An array of group objects.

=back

=cut