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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.

package Bugzilla::Extension::Mageia;

use 5.10.1;
use strict;
use warnings;

use parent qw(Bugzilla::Extension);

use Bugzilla::Constants qw(EVT_CC REL_GLOBAL_WATCHER);
use Bugzilla::Bug qw(LogActivityEntry);
use Bugzilla::Field qw(get_field_id);
use Bugzilla::User qw();
use Bugzilla::Extension::Mageia::Util;

use Email::Address;
use Encode qw(encode);

# Let's match the Bugzilla version it's written for.
our $VERSION = '5.0';

# sysadmin-bugs@ml.mageia.org user ID = 175.
use constant SYSADMIN_USER_ID => 175;

sub bug_end_of_create_validators {
    my ($self, $args) = @_;

    # If a user enters 'validated_update' as keyword,
    # automatically CC sysadmin-bugs@ml.mageia.org.
    my $keywords = $args->{params}->{keywords};

    if (grep { $_->name eq 'validated_update' } @$keywords) {
        my $cc_list = $args->{params}->{cc};
        if (!grep { $_ == SYSADMIN_USER_ID } @$cc_list) {
            push(@$cc_list, SYSADMIN_USER_ID);
        }
    }
}

sub bug_end_of_update {
    my ($self, $args) = @_;
    my $bug = $args->{bug};
    my $dbh = Bugzilla->dbh;
    my $user = Bugzilla->user;

    # If a user enters 'validated_update' as keyword,
    # automatically CC sysadmin-bugs@ml.mageia.org.
    my $new_keywords_str = $args->{changes}->{keywords}->[1];

    if ($new_keywords_str) {
        my @new_keywords = split(/[,\s]+/, $new_keywords_str);
        if (grep { $_ eq 'validated_update' } @new_keywords
            and !grep { $_->id == SYSADMIN_USER_ID } @{$bug->cc_users})
        {
            # Safer to clear the cache and let Bugzilla regenerate them if needed.
            delete $bug->{cc_users};
            delete $bug->{cc};
            $dbh->do('INSERT INTO cc (bug_id, who) VALUES (?, ?)',
                     undef, ($bug->id, SYSADMIN_USER_ID));

            # We also have to update the bug history to reflect this change.
            my $changed_cc = $args->{changes}->{cc};
            my $sysadmin_login = Bugzilla::User->new(SYSADMIN_USER_ID)->login;

            if ($changed_cc->[1]) {
                $changed_cc->[1] .= ", $sysadmin_login";
            }
            else {
                $changed_cc->[1] = $sysadmin_login;
            }

            my $field_id = get_field_id('cc');
            $dbh->do('DELETE FROM bugs_activity
                      WHERE bug_id = ? AND bug_when = ? AND fieldid = ?',
                      undef, ($bug->id, $args->{timestamp}, $field_id));

            LogActivityEntry($bug->id, 'cc', $changed_cc->[0] // '', $changed_cc->[1],
                             $user->id, $args->{timestamp});
        }
    }
}

sub bug_format_comment {
    my ($self, $args) = @_;
    my $regexes = $args->{'regexes'};
    # The Mageia DB was initially using SQL_ASCII as encoding (which means "no encoding").
    # The move to UTF8 caused some characters to be badly decoded, which we fix here.
    # Convert "é" into "é".
    push(@$regexes, { match => qr/\xc3\xa9/, replace => "\xe9" });
}

sub enter_bug_entrydefaultvars {
    my ($self, $vars) = @_;
    my $cgi = Bugzilla->cgi;

    # By default, users should get the guided form when reporting a new bug.
    # Pass &normal=1 to the URL to get the official bug form.
    my $format = $cgi->param('normal') ? '' : 'guided';
    $cgi->param('format', $format);
}

sub mailer_before_send {
    my ($self, $args) = @_;
    my $email = $args->{email};

    # Include the changer's name in the "From:" field.
    if (my $changer = $email->header('X-Bugzilla-Who')) {
        $changer = Bugzilla::User->new({ name => $changer });
        return unless $changer;
        my $address = Email::Address->new($changer->name, $email->header('From'));
        $email->header_set('From', encode('MIME-Header', $address->format));
    }
}

sub user_wants_mail {
    my ($self, $args) = @_;
    return unless $args->{relationship} == REL_GLOBAL_WATCHER;

    my $wants_mail = $args->{wants_mail};
    my @events = @{ $args->{events} };
    # Do not email global watchers if the single change is about the CC list.
    $$wants_mail = (scalar(@events) == 1 && $events[0] == EVT_CC) ? 0 : 1;
}

__PACKAGE__->NAME;