#!/usr/bin/perl -wT
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is mozilla.org code.
#
# The Initial Developer of the Original Code is Holger
# Schurig. Portions created by Holger Schurig are
# Copyright (C) 1999 Holger Schurig. All
# Rights Reserved.
#
# Contributor(s): Holger Schurig <holgerschurig@nikocity.de>
#                 Terry Weissman <terry@mozilla.org>
#                 Gavin Shelley <bugzilla@chimpychompy.org>
#                 Frédéric Buclin <LpSolit@gmail.com>

use strict;
use lib qw(. lib);

use Bugzilla;
use Bugzilla::Constants;
use Bugzilla::Util;
use Bugzilla::Error;
use Bugzilla::Version;
use Bugzilla::Token;

my $ARGS = Bugzilla->input_params;
my $template = Bugzilla->template;
my $vars = {};
# There is only one section about versions in the documentation,
# so all actions point to the same page.
$vars->{doc_section} = 'versions.html';

#
# Preliminary checks:
#

my $user = Bugzilla->login(LOGIN_REQUIRED);

$user->in_group('editcomponents')
    || scalar(@{$user->get_editable_products})
    || ThrowUserError("auth_failure", {
        group  => "editcomponents",
        action => "edit",
        object => "versions",
    });

#
# often used variables
#
my $product_name  = trim($ARGS->{product} || '');
my $version_name  = trim($ARGS->{version} || '');
my $action        = trim($ARGS->{action} || '');
my $showbugcounts = defined $ARGS->{showbugcounts};
my $token         = $ARGS->{token};
my $isactive      = $ARGS->{isactive};

#
# product = '' -> Show nice list of products
#
unless ($product_name)
{
    $vars->{products} = $user->get_editable_products;
    $vars->{showbugcounts} = $showbugcounts;
    $template->process("admin/versions/select-product.html.tmpl", $vars)
        || ThrowTemplateError($template->error());
    exit;
}

my $product = $user->check_can_admin_product($product_name);

#
# action='' -> Show nice list of versions
#
unless ($action)
{
    $vars->{showbugcounts} = $showbugcounts;
    $vars->{product} = $product;
    $template->process("admin/versions/list.html.tmpl", $vars)
        || ThrowTemplateError($template->error());
    exit;
}

#
# action='change_empty' -> Enable/disable empty version
#
if ($action eq 'change_empty' && Bugzilla->get_field('version')->null_field_id == Bugzilla->get_field('product')->id)
{
    my $f = ($ARGS->{allow_empty} ? 'add' : 'delete').'_visibility_values';
    Bugzilla->get_field('version')->$f(FLAG_NULLABLE, [ $product->id ]);
    print Bugzilla->cgi->redirect('editversions.cgi?product='.url_quote($product->name));
    exit;
}

#
# action='add' -> present form for parameters for new version
#
# (next action will be 'new')
#
if ($action eq 'add')
{
    $vars->{token} = issue_session_token('add_version');
    $vars->{product} = $product;
    $template->process("admin/versions/edit.html.tmpl", $vars)
        || ThrowTemplateError($template->error());
    exit;
}

#
# action='new' -> add version entered in the 'action=add' screen
#
if ($action eq 'new')
{
    check_token_data($token, 'add_version');
    my $version = Bugzilla::Version->create({
        name => $version_name,
        product => $product,
        sortkey => $ARGS->{sortkey} || 0,
    });
    delete_token($token);
    $vars->{message} = 'version_created';
    $vars->{version} = $version;
    $vars->{product} = $product;
    $template->process("admin/versions/list.html.tmpl", $vars)
        || ThrowTemplateError($template->error());
    exit;
}

#
# action='del' -> ask if user really wants to delete
#
# (next action would be 'delete')
#
if ($action eq 'del')
{
    my $version = Bugzilla::Version->check({
        product => $product,
        name    => $version_name,
    });
    $vars->{version} = $version;
    $vars->{product} = $product;
    $vars->{token} = issue_session_token('delete_version');
    $template->process("admin/versions/confirm-delete.html.tmpl", $vars)
        || ThrowTemplateError($template->error());
    exit;
}

#
# action='delete' -> really delete the version
#
if ($action eq 'delete')
{
    check_token_data($token, 'delete_version');
    my $version = Bugzilla::Version->check({
        product => $product,
        name    => $version_name,
    });
    $version->remove_from_db;
    delete_token($token);

    $vars->{message} = 'version_deleted';
    $vars->{version} = $version;
    $vars->{product} = $product;
    $vars->{no_edit_version_link} = 1;

    $template->process("admin/versions/list.html.tmpl", $vars)
        || ThrowTemplateError($template->error());
    exit;
}

#
# action='edit' -> present the edit version form
#
# (next action would be 'update')
#
if ($action eq 'edit')
{
    my $version = Bugzilla::Version->check({
        product => $product,
        name    => $version_name,
    });
    $vars->{version} = $version;
    $vars->{product} = $product;
    $vars->{token} = issue_session_token('edit_version');

    $template->process("admin/versions/edit.html.tmpl", $vars)
        || ThrowTemplateError($template->error());
    exit;
}

#
# action='update' -> update the version
#
if ($action eq 'update')
{
    check_token_data($token, 'edit_version');
    my $version_old_name = trim($ARGS->{versionold} || '');
    my $version = Bugzilla::Version->check({
        product => $product,
        name   => $version_old_name,
    });

    Bugzilla->dbh->bz_start_transaction();

    $version->set_name($version_name);
    $version->set_is_active($isactive);
    $version->set_sortkey($ARGS->{sortkey});
    my $changes = $version->update();

    $changes->{control_lists} = 1 if $version->field->update_control_lists($version->id, $ARGS);

    Bugzilla->dbh->bz_commit_transaction();
    delete_token($token);

    $vars->{message} = 'version_updated';
    $vars->{version} = $version;
    $vars->{product} = $product;
    $vars->{changes} = $changes;

    $template->process("admin/versions/list.html.tmpl", $vars)
        || ThrowTemplateError($template->error());
    exit;
}

#
# No valid action found
#
ThrowUserError('no_valid_action', {'field' => "version"});