# 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::Search::ClauseGroup;

use 5.10.1;
use strict;
use warnings;

use base qw(Bugzilla::Search::Clause);

use Bugzilla::Error;
use Bugzilla::Search::Condition qw(condition);
use List::MoreUtils qw(uniq);

use constant UNSUPPORTED_FIELDS => qw(
  attachments.count
  blocked.count
  cc_count
  classification
  commenter
  component
  dependson.count
  dupe_count
  keywords.count
  longdescs.count
  product
  owner_idle_time
  regressed_by.count
  regresses.count
);

sub new {
  my ($class) = @_;
  my $self = bless({joiner => 'AND'}, $class);

  # Add a join back to the bugs table which will be used to group conditions
  # for this clause
  my $condition = Bugzilla::Search::Condition->new({});
  $condition->translated({
    joins => [{
      table => 'bugs',
      as    => 'bugs_g0',
      from  => 'bug_id',
      to    => 'bug_id',
      extra => [],
    }],
    term => '1 = 1',
  });
  $self->SUPER::add($condition);
  $self->{group_condition} = $condition;
  return $self;
}

sub add {
  my ($self, @args) = @_;
  my $field = scalar(@args) == 3 ? $args[0] : $args[0]->{field};

  # We don't support nesting of conditions under this clause
  if (scalar(@args) == 1 && !$args[0]->isa('Bugzilla::Search::Condition')) {
    ThrowUserError('search_grouped_invalid_nesting');
  }

  # Ensure all conditions use the same field
  if (!$self->{_field}) {
    $self->{_field} = $field;
  }
  elsif ($field ne $self->{_field}) {
    ThrowUserError('search_grouped_field_mismatch');
  }

  # Unsupported fields
  if (grep { $_ eq $field } UNSUPPORTED_FIELDS) {
    ThrowUserError('search_grouped_field_invalid', {field => $field});
  }

  $self->SUPER::add(@args);
}

sub update_search_args {
  my ($self, $search_args) = @_;

  # No need to change things if there's only one child condition
  return unless scalar(@{$self->children}) > 1;

  # we want all the terms to use the same join table
  if (!exists $self->{_first_chart_id}) {
    $self->{_first_chart_id} = $search_args->{chart_id};
  }
  else {
    $search_args->{chart_id} = $self->{_first_chart_id};
  }

  my $suffix = '_g' . $self->{_first_chart_id};
  $self->{group_condition}->{translated}->{joins}->[0]->{as} = "bugs$suffix";

  $search_args->{full_field} =~ s/^bugs\./bugs$suffix\./;

  $search_args->{table_suffix} = $suffix;
  $search_args->{bugs_table}   = "bugs$suffix";
}

1;
