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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::ContributorEngagement;

use 5.10.1;
use strict;
use warnings;

use base qw(Bugzilla::Extension);

use Bugzilla::User;
use Bugzilla::Util qw(format_time);
use Bugzilla::Mailer;
use Bugzilla::Install::Util qw(indicate_progress);

use Bugzilla::Extension::ContributorEngagement::Constants;

our $VERSION = '2.0';

BEGIN {
  *Bugzilla::User::first_patch_reviewed_id = \&_first_patch_reviewed_id;
}

sub _first_patch_reviewed_id { return $_[0]->{'first_patch_reviewed_id'}; }

sub install_update_db {
  my ($self) = @_;
  my $dbh = Bugzilla->dbh;

  if ($dbh->bz_column_info('profiles', 'first_patch_approved_id')) {
    $dbh->bz_drop_column('profiles', 'first_patch_approved_id');
  }
  if (!$dbh->bz_column_info('profiles', 'first_patch_reviewed_id')) {
    $dbh->bz_add_column('profiles', 'first_patch_reviewed_id', {TYPE => 'INT3'});
    _populate_first_reviewed_ids();
  }
}

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

  my $sth = $dbh->prepare(
    'UPDATE profiles SET first_patch_reviewed_id = ? WHERE userid = ?');
  my $ra = $dbh->selectall_arrayref(
    "SELECT attachments.submitter_id,
                                              attachments.attach_id
                                         FROM attachments
                                              INNER JOIN flags ON attachments.attach_id = flags.attach_id
                                              INNER JOIN flagtypes ON flags.type_id = flagtypes.id
                                        WHERE flagtypes.name LIKE 'review%' AND flags.status = '+'
                                     ORDER BY flags.modification_date"
  );
  my $count = 1;
  my $total = scalar @$ra;
  my %user_seen;
  foreach my $ra_row (@$ra) {
    my ($user_id, $attach_id) = @$ra_row;
    indicate_progress({current => $count++, total => $total, every => 25});
    next if $user_seen{$user_id};
    $sth->execute($attach_id, $user_id);
    $user_seen{$user_id} = 1;
  }

  print "done\n";
}

sub object_columns {
  my ($self,  $args)    = @_;
  my ($class, $columns) = @$args{qw(class columns)};
  if ($class->isa('Bugzilla::User')) {
    my $dbh = Bugzilla->dbh;
    if ($dbh->bz_column_info($class->DB_TABLE, 'first_patch_reviewed_id')) {
      push @$columns, 'first_patch_reviewed_id';
    }
  }
}

sub flag_end_of_update {
  my ($self, $args) = @_;
  my ($object, $timestamp, $new_flags) = @$args{qw(object timestamp new_flags)};

  if ( $object->isa('Bugzilla::Attachment')
    && @$new_flags
    && !$object->attacher->first_patch_reviewed_id
    && grep($_ eq $object->bug->product, ENABLED_PRODUCTS))
  {
    my $attachment = $object;

    foreach my $orig_change (@$new_flags) {
      my $change = $orig_change;
      $change =~ s/^[^:]+://;        # get rid of setter
      $change =~ s/\([^\)]+\)$//;    # get rid of requestee
      my ($name, $value) = $change =~ /^(.+)(.)$/;

      # Only interested in review flags set to +
      next unless $name =~ /^review/ && $value eq '+';

      _send_mail($attachment, $timestamp);

      Bugzilla->dbh->do(
        "UPDATE profiles SET first_patch_reviewed_id = ? WHERE userid = ?",
        undef, $attachment->id, $attachment->attacher->id);
      Bugzilla->memcached->clear(
        {table => 'profiles', id => $attachment->attacher->id});
      last;
    }
  }
}

sub _send_mail {
  my ($attachment, $timestamp) = @_;

  my $vars = {
    date       => format_time($timestamp, '%a, %d %b %Y %T %z', 'UTC'),
    attachment => $attachment,
    from_user  => EMAIL_FROM,
  };

  my $msg;
  my $template = Bugzilla->template_inner($attachment->attacher->setting('lang'));
  $template->process("contributor/email.txt.tmpl", $vars, \$msg)
    || ThrowTemplateError($template->error());

  MessageToMTA($msg);
}

__PACKAGE__->NAME;