<?php
/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
# ***** BEGIN LICENSE BLOCK *****
# This file is part of Plume Framework, a simple PHP Application Framework.
# Copyright (C) 2001-2010 Loic d'Anterroches and contributors.
#
# Plume Framework is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# Plume Framework is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
# ***** END LICENSE BLOCK ***** */

Pluf::loadFunction('Pluf_Shortcuts_RenderToResponse');
Pluf::loadFunction('Pluf_HTTP_URL_urlForView');

/**
 * Manage and visualize the tests.
 *
 * It is possible to mark a test as inactive by picking a
 * winner.
 *
 * Check the urls.php file for the URL definition to integrate the
 * dashboard in your application/project.
 *
 * The permission used are:
 *
 * Pluf_AB.view-dashboard: The user can view the dasboard.
 * Pluf_AB.edit-test: The user can edit a test.
 *
 */
class Pluf_AB_Views
{
    /**
     * Display the currently running tests.
     *
     * The name of the view in the urls must be 'pluf_ab_dashboard'.
     */
    public $dasboard_precond = array(array('Pluf_Precondition::hasPerm',
                                           'Pluf_AB.view-dashboard'));
    public function dashboard($request, $match)
    {
        $url = Pluf_HTTP_URL_urlForView('pluf_ab_dashboard');
        $can_edit = $request->user->hasPerm('Pluf_AB.edit-test');
        if ($can_edit && $request->method == 'POST') {
            // We mark the winner.
            $form = new Pluf_AB_Form_MarkWinner($request->POST);
            if ($form->isValid()) {
                $form->save();
                $request->user->setMessage(__('The test has been updated.'));
                return new Pluf_HTTP_Response_Redirect($url);
            }
        } else {
            // To have it available for the control of the errors in
            // the template.
            $form = new Pluf_AB_Form_MarkWinner();
        }
        // Get the list of tests
        $db = Pluf_AB::getDb();
        $active = array();
        $stopped = array();
        foreach ($db->tests->find() as $test) {
            $test['stats'] = Pluf_AB::getTestStats($test);
            if ($test['active']) {
                $active[] = $test;
            } else {
                $stopped[] = $test;
            }
        }
        return Pluf_Shortcuts_RenderToResponse('pluf/ab/dashboard.html', 
                                               array('active' => $active,
                                                     'stopped' => $stopped,
                                                     'form' => $form,
                                                     'can_edit' => $can_edit,
                                                     ),
                                               $request);
    }

    /**
     * A simple view to redirect a user and convert it.
     *
     * To convert the user for the test 'my_test' and redirect it to
     * the URL 'http://www.example.com' add the following view in your
     * urls.php:
     *
     * <pre>
     *  array('regex' => '#^/goto/example/$#',
     *         'base' => $base,
     *         'model' => 'Pluf_AB_Views',
     *         'method' => 'convRedirect',
     *         'name' => 'go_to_example',
     *         'params' => array('url' => 'http://www.example.com',
     *                           'test' => 'my_test')
     *         );
     * </pre>
     * 
     * Try to put a url which reflects the final url after redirection
     * to minimize the confusion for the user. In this example, in
     * your code or template you use the named url 'go_to_example'.
     *
     */
    public function convRedirect($request, $match, $p)
    {
        Pluf_AB::convert($p['test'], $request);        
        return new Pluf_HTTP_Response_Redirect($p['url']);
    }
}