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#!/usr/bin/perl -T
# 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.

use 5.10.1;
use strict;
use warnings;

use lib qw(. lib);

use Bugzilla;
use Bugzilla::Constants;
use Bugzilla::Error;
use Bugzilla::Util;
use Bugzilla::Bug;

my $cgi      = Bugzilla->cgi;
my $template = Bugzilla->template;
my $vars     = {};

my $user = Bugzilla->login();

my $format = $template->get_format(
  "bug/show",
  scalar $cgi->param('format'),
  scalar $cgi->param('ctype')
);

# Editable, 'single' HTML bugs are treated slightly specially in a few places
my $single = !$format->{format} && $format->{extension} eq 'html';

# If we don't have an ID, _AND_ we're only doing a single bug, then prompt
if (!$cgi->param('id') && $single) {
  print $cgi->header();
  $template->process("bug/choose.html.tmpl", $vars)
    || ThrowTemplateError($template->error());
  exit;
}

my (@bugs, @illegal_bugs);
my %marks;

# If the user isn't logged in, we use data from the shadow DB. If they plan
# to edit the bug(s), they will have to log in first, meaning that the data
# will be reloaded anyway, from the main DB.
Bugzilla->switch_to_shadow_db unless $user->id;

if ($single) {
  my $id = $cgi->param('id');
  push @bugs, Bugzilla::Bug->check({id => $id, cache => 1});
  if (defined $cgi->param('mark')) {
    foreach my $range (split ',', $cgi->param('mark')) {
      if ($range =~ /^(\d+)-(\d+)$/) {
        foreach my $i ($1 .. $2) {
          $marks{$i} = 1;
        }
      }
      elsif ($range =~ /^(\d+)$/) {
        $marks{$1} = 1;
      }
    }
  }
}
else {
  foreach my $id ($cgi->param('id')) {

    # Be kind enough and accept URLs of the form: id=1,2,3.
    my @ids = split(/,/, $id);
    my @check_bugs;

    foreach my $bug_id (@ids) {
      next unless $bug_id;
      my $bug = new Bugzilla::Bug({id => $bug_id, cache => 1});
      if (!$bug->{error}) {
        push(@check_bugs, $bug);
      }
      else {
        push(@illegal_bugs, {bug_id => trim($bug_id), error => $bug->{error}});
      }
    }

    $user->visible_bugs(\@check_bugs);

    foreach my $bug (@check_bugs) {
      if ($user->can_see_bug($bug->id)) {
        push(@bugs, $bug);
      }
      else {
        my $error = 'NotPermitted';    # Trick to make 012throwables.t happy.
        push(@illegal_bugs, {bug_id => $bug->id, error => $error});
      }
    }
  }
}

Bugzilla::Bug->preload(\@bugs);

$vars->{'bugs'} = [@bugs, @illegal_bugs];
$vars->{'marks'} = \%marks;

my @bugids = map { $_->bug_id } grep { !$_->error } @bugs;
$vars->{'bugids'} = join(", ", @bugids);

# Work out which fields we are displaying (currently XML only.)
# If no explicit list is defined, we show all fields. We then exclude any
# on the exclusion list. This is so you can say e.g. "Everything except
# attachments" without listing almost all the fields.
my @fieldlist = (
  Bugzilla::Bug->fields, 'flag',
  'group',               'long_desc',
  'attachment',          'attachmentdata',
  'token'
);
my %displayfields;

if ($cgi->param("field")) {
  @fieldlist = $cgi->param("field");
}

unless ($user->is_timetracker) {
  @fieldlist = grep($_ !~ /_time$/, @fieldlist);
}

foreach (@fieldlist) {
  $displayfields{$_} = 1;
}

foreach ($cgi->param("excludefield")) {
  $displayfields{$_} = undef;
}

$vars->{'displayfields'} = \%displayfields;

print $cgi->header($format->{'ctype'});

$template->process($format->{'template'}, $vars)
  || ThrowTemplateError($template->error());