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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::LastResolved;

use 5.10.1;
use strict;
use warnings;

use base qw(Bugzilla::Extension);

use Bugzilla::Bug qw(LogActivityEntry);
use Bugzilla::Util qw(format_time);
use Bugzilla::Constants;
use Bugzilla::Field;
use Bugzilla::Install::Util qw(indicate_progress);

our $VERSION = '0.01';

sub install_update_db {
  my ($self, $args) = @_;
  my $last_resolved = Bugzilla::Field->new({'name' => 'cf_last_resolved'});
  if (!$last_resolved) {
    Bugzilla::Field->create({
      name        => 'cf_last_resolved',
      description => 'Last Resolved',
      type        => FIELD_TYPE_DATETIME,
      mailhead    => 0,
      enter_bug   => 0,
      obsolete    => 0,
      custom      => 1,
      buglist     => 1,
    });
    _migrate_last_resolved();
  }
}

sub _migrate_last_resolved {
  my $dbh               = Bugzilla->dbh;
  my $field_id          = get_field_id('bug_status');
  my $resolved_activity = $dbh->selectall_arrayref(
    "SELECT bugs_activity.bug_id, bugs_activity.bug_when, bugs_activity.who
           FROM bugs_activity
          WHERE bugs_activity.fieldid = ?
                AND bugs_activity.added = 'RESOLVED'
          ORDER BY bugs_activity.bug_when", undef, $field_id
  );

  my $count = 1;
  my $total = scalar @$resolved_activity;
  my %current_last_resolved;
  foreach my $activity (@$resolved_activity) {
    indicate_progress({current => $count++, total => $total, every => 25});
    my ($id, $new, $who) = @$activity;
    my $old = $current_last_resolved{$id} ? $current_last_resolved{$id} : "";
    $dbh->do("UPDATE bugs SET cf_last_resolved = ? WHERE bug_id = ?",
      undef, $new, $id);
    LogActivityEntry($id, 'cf_last_resolved', $old, $new, $who, $new);
    $current_last_resolved{$id} = $new;
  }
}

sub bug_check_can_change_field {
  my ($self,  $args)         = @_;
  my ($field, $priv_results) = @$args{qw(field priv_results)};
  if ($field eq 'cf_last_resolved') {
    push(@$priv_results, PRIVILEGES_REQUIRED_EMPOWERED);
  }
}

sub bug_end_of_update {
  my ($self, $args) = @_;
  my $dbh = Bugzilla->dbh;
  my ($bug, $old_bug, $timestamp, $changes)
    = @$args{qw(bug old_bug timestamp changes)};
  if ($changes->{'bug_status'}) {

    # If the bug has been resolved then update the cf_last_resolved
    # value to the current timestamp if cf_last_resolved exists
    if ($bug->bug_status eq 'RESOLVED') {
      $dbh->do("UPDATE bugs SET cf_last_resolved = ? WHERE bug_id = ?",
        undef, $timestamp, $bug->id);
      my $old_value = $bug->cf_last_resolved || '';
      LogActivityEntry($bug->id, 'cf_last_resolved', $old_value, $timestamp,
        Bugzilla->user->id, $timestamp);
    }
  }
}

sub bug_fields {
  my ($self, $args) = @_;
  my $fields = $args->{'fields'};
  push(@$fields, 'cf_last_resolved');
}

sub object_columns {
  my ($self,  $args)    = @_;
  my ($class, $columns) = @$args{qw(class columns)};
  if ($class->isa('Bugzilla::Bug')) {
    push(@$columns, 'cf_last_resolved');
  }
}

sub buglist_columns {
  my ($self, $args) = @_;
  my $columns = $args->{columns};
  $columns->{'cf_last_resolved'}
    = {name => 'bugs.cf_last_resolved', title => 'Last Resolved',};
}

__PACKAGE__->NAME;