<?php
/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
# ***** BEGIN LICENSE BLOCK *****
# This file is part of InDefero, an open source project management application.
# Copyright (C) 2008 Céondo Ltd and contributors.
#
# InDefero is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# InDefero 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 General Public License for more details.
#
# You should have received a copy of the GNU 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_HTTP_URL_urlForView');
Pluf::loadFunction('Pluf_Shortcuts_RenderToResponse');
Pluf::loadFunction('Pluf_Shortcuts_GetObjectOr404');
Pluf::loadFunction('Pluf_Shortcuts_GetFormForModel');

/**
 * Base views of InDefero.
 */
class IDF_Views
{
    /**
     * List all the projects managed by InDefero.
     *
     * Only the public projects are listed or the private with correct
     * rights.
     */
    public function index($request, $match, $api=false)
    {
        $projects = self::getProjects($request->user);
        $stats = self::getProjectsStatistics ($projects);
        
        if ($api == true) return $projects;
        return Pluf_Shortcuts_RenderToResponse('idf/index.html', 
                                               array('page_title' => __('Projects'),
                                                     'projects' => $projects,
                                                     'stats' => new Pluf_Template_ContextVars($stats)),
                                               $request);
    }

    /**
     * Login view.
     */
    public function login($request, $match)
    {
        if (isset($request->POST['action']) 
            and $request->POST['action'] == 'new-user') {
            $login = (isset($request->POST['login'])) ? $request->POST['login'] : '';
            $url = Pluf_HTTP_URL_urlForView('IDF_Views::register', array(),
                                            array('login' => $login));
            return new Pluf_HTTP_Response_Redirect($url);
        }
        $v = new Pluf_Views();
        $request->POST['login'] = (isset($request->POST['login'])) ? mb_strtolower($request->POST['login']) : '';
        return $v->login($request, $match, Pluf::f('login_success_url'),
                         array(), 'idf/login_form.html');
    }

    /**
     * Logout view.
     */
    function logout($request, $match)
    {
        $views = new Pluf_Views();
        return $views->logout($request, $match, Pluf::f('after_logout_page'));
    }

    /**
     * Registration.
     *
     * We just ask for login, email and to agree with the terms. Then,
     * we go ahead and send a confirmation email. The confirmation
     * email will allow to set the password, first name and last name
     * of the user.
     */
    function register($request, $match)
    {
        $title = __('Create Your Account');
        $params = array('request'=>$request);
        if ($request->method == 'POST') {
            $form = new IDF_Form_Register(array_merge(
            									(array)$request->POST, 
												(array)$request->FILES
												), $params);
            if ($form->isValid()) {
                $user = $form->save(); // It is sending the confirmation email
                $url = Pluf_HTTP_URL_urlForView('IDF_Views::registerInputKey');
                return new Pluf_HTTP_Response_Redirect($url);
            }
        } else {
            if (isset($request->GET['login'])) {
                $params['initial'] = array('login' => $request->GET['login']);
            }
            $form = new IDF_Form_Register(null, $params);
        }
        $context = new Pluf_Template_Context(array());
        $tmpl = new Pluf_Template('idf/terms.html');
        $terms = Pluf_Template::markSafe($tmpl->render($context));
        return Pluf_Shortcuts_RenderToResponse('idf/register/index.html', 
                                               array('page_title' => $title,
                                                     'form' => $form,
                                                     'terms' => $terms),
                                               $request);
    }

    /**
     * Input the registration confirmation key.
     *
     * Very simple view just to redirect to the register confirmation
     * views to input the password.
     */
    function registerInputKey($request, $match)
    {
        $title = __('Confirm Your Account Creation');
        if ($request->method == 'POST') {
            $form = new IDF_Form_RegisterInputKey($request->POST);
            if ($form->isValid()) {
                $url = $form->save();
                return new Pluf_HTTP_Response_Redirect($url);
            }
        } else {
            $form = new IDF_Form_RegisterInputKey();
        }
        return Pluf_Shortcuts_RenderToResponse('idf/register/inputkey.html', 
                                               array('page_title' => $title,
                                                     'form' => $form),
                                               $request);
    }

    /**
     * Registration confirmation.
     *
     * Input first/last name, password and sign in the user.
     *
     * Maybe in the future send the user to its personal page for
     * customization.
     */
    function registerConfirmation($request, $match)
    {
        $title = __('Confirm Your Account Creation');
        $key = $match[1];
        // first "check", full check is done in the form.
        $email_id = IDF_Form_RegisterInputKey::checkKeyHash($key);
        if (false == $email_id) {
            $url = Pluf_HTTP_URL_urlForView('IDF_Views::registerInputKey');
            return new Pluf_HTTP_Response_Redirect($url);
        }
        $user = new Pluf_User($email_id[1]);
        $extra = array('key' => $key,
                       'user' => $user);
        if ($request->method == 'POST') {
            $form = new IDF_Form_RegisterConfirmation($request->POST, $extra);
            if ($form->isValid()) {
                $user = $form->save();
                $request->user = $user;
                $request->session->clear();
                $request->session->setData('login_time', gmdate('Y-m-d H:i:s'));
                $user->last_login = gmdate('Y-m-d H:i:s');
                $user->update();                
                $request->user->setMessage(__('Welcome! You can now participate in the life of your project of choice.'));
                $url = Pluf_HTTP_URL_urlForView('IDF_Views::index');
                return new Pluf_HTTP_Response_Redirect($url);
            }
        } else {
            $form = new IDF_Form_RegisterConfirmation(null, $extra);
        }
        return Pluf_Shortcuts_RenderToResponse('idf/register/confirmation.html', 
                                               array('page_title' => $title,
                                                     'new_user' => $user,
                                                     'form' => $form),
                                               $request);
    }

    /**
     * Password recovery.
     *
     * Request the login or the email of the user and if the login or
     * email is available in the database, send an email with a key to
     * reset the password.
     *
     * If the user is not yet confirmed, send the confirmation key one
     * more time.
     */
    function passwordRecoveryAsk($request, $match)
    {
        $title = __('Password Recovery');
        if ($request->method == 'POST') {
            $form = new IDF_Form_Password($request->POST);
            if ($form->isValid()) {
                $url = $form->save();
                return new Pluf_HTTP_Response_Redirect($url);
            }
        } else {
            $form = new IDF_Form_Password();
        }
        return Pluf_Shortcuts_RenderToResponse('idf/user/passrecovery-ask.html',
                                               array('page_title' => $title,
                                                     'form' => $form),
                                               $request);
    }

    /**
     * If the key is valid, provide a nice form to reset the password
     * and automatically login the user. 
     *
     * This is also firing the password change event for the plugins.
     */
    public function passwordRecovery($request, $match)
    {
        $title = __('Password Recovery');
        $key = $match[1];
        // first "check", full check is done in the form.
        $email_id = IDF_Form_PasswordInputKey::checkKeyHash($key);
        if (false == $email_id) {
            $url = Pluf_HTTP_URL_urlForView('IDF_Views::passwordRecoveryInputKey');
            return new Pluf_HTTP_Response_Redirect($url);
        }
        $user = new Pluf_User($email_id[1]);
        $extra = array('key' => $key,
                       'user' => $user);
        if ($request->method == 'POST') {
            $form = new IDF_Form_PasswordReset($request->POST, $extra);
            if ($form->isValid()) {
                $user = $form->save();
                $request->user = $user;
                $request->session->clear();
                $request->session->setData('login_time', gmdate('Y-m-d H:i:s'));
                $user->last_login = gmdate('Y-m-d H:i:s');
                $user->update();                
                $request->user->setMessage(__('Welcome back! Next time, you can use your broswer options to remember the password.'));
                $url = Pluf_HTTP_URL_urlForView('IDF_Views::index');
                return new Pluf_HTTP_Response_Redirect($url);
            }
        } else {
            $form = new IDF_Form_PasswordReset(null, $extra);
        }
        return Pluf_Shortcuts_RenderToResponse('idf/user/passrecovery.html', 
                                               array('page_title' => $title,
                                                     'new_user' => $user,
                                                     'form' => $form),
                                               $request);
        
    }

    /**
     * Just a simple input box to provide the code and redirect to
     * passwordRecovery
     */
    public function passwordRecoveryInputCode($request, $match)
    {
        $title = __('Password Recovery');
        if ($request->method == 'POST') {
            $form = new IDF_Form_PasswordInputKey($request->POST);
            if ($form->isValid()) {
                $url = $form->save();
                return new Pluf_HTTP_Response_Redirect($url);
            }
        } else {
            $form = new IDF_Form_PasswordInputKey();
        }
        return Pluf_Shortcuts_RenderToResponse('idf/user/passrecovery-inputkey.html', 
                                               array('page_title' => $title,
                                                     'form' => $form),
                                               $request);
    }

    /**
     * FAQ.
     */
    public function faq($request, $match)
    {
        $title = __('Here to Help You!');
        $projects = self::getProjects($request->user);
        return Pluf_Shortcuts_RenderToResponse('idf/faq.html', 
                                               array(
                                                     'page_title' => $title,
                                                     'projects' => $projects,
                                                     ),
                                               $request);

    }

    /**
     * API FAQ.
     */
    public function faqApi($request, $match)
    {
        $title = __('InDefero API (Application Programming Interface)');
        $projects = self::getProjects($request->user);
        return Pluf_Shortcuts_RenderToResponse('idf/faq-api.html', 
                                               array(
                                                     'page_title' => $title,
                                                     'projects' => $projects,
                                                     ),
                                               $request);

    }

    /**
     * Returns a list of projects accessible for the user.
     *
     * @param Pluf_User
     * @return ArrayObject IDF_Project
     */
    public static function getProjects($user)
    {
        $db =& Pluf::db();
        $false = Pluf_DB_BooleanToDb(false, $db);
        if ($user->isAnonymous()) {
            $sql = sprintf('%s=%s', $db->qn('private'), $false);
            return Pluf::factory('IDF_Project')->getList(array('filter'=> $sql,
                                                               'order' => 'name ASC'));
        }
        if ($user->administrator) {
            return Pluf::factory('IDF_Project')->getList(array('order' => 'name ASC'));
        }
        // grab the list of projects where the user is admin, member
        // or authorized
        $perms = array(
                       Pluf_Permission::getFromString('IDF.project-member'),
                       Pluf_Permission::getFromString('IDF.project-owner'),
                       Pluf_Permission::getFromString('IDF.project-authorized-user')
                       );
        $sql = new Pluf_SQL("model_class='IDF_Project' AND owner_class='Pluf_User' AND owner_id=%s AND negative=".$false, $user->id);
        $rows = Pluf::factory('Pluf_RowPermission')->getList(array('filter' => $sql->gen()));
        
        $sql = sprintf('%s=%s', $db->qn('private'), $false);
        if ($rows->count() > 0) {
            $ids = array();
            foreach ($rows as $row) {
                $ids[] = $row->model_id;
            }
            $sql .= sprintf(' OR id IN (%s)', implode(', ', $ids));
        }
        return Pluf::factory('IDF_Project')->getList(array('filter' => $sql,
                                                           'order' => 'name ASC'));
    }
    
    /**
     * Returns statistics on a list of projects.
     *
     * @param ArrayObject IDF_Project
     * @return Associative array of statistics
     */
    public static function getProjectsStatistics($projects)
    {
        // Init the return var
        $forgestats = array('downloads' => 0,
                            'reviews' => 0,
                            'issues' => 0,
                            'docpages' => 0,
                            'commits' => 0);
        
        // Count for each projects
        foreach ($projects as $p) {
            $pstats = $p->getStats ();
            $forgestats['downloads'] += $pstats['downloads'];
            $forgestats['reviews'] += $pstats['reviews'];
            $forgestats['issues'] += $pstats['issues'];
            $forgestats['docpages'] += $pstats['docpages'];
            $forgestats['commits'] += $pstats['commits'];
        }
    
        // Count projects
        $forgestats['projects'] = count($projects);

        // Count members
        $sql = new Pluf_SQL('first_name != %s', array('---'));
        $forgestats['members'] = Pluf::factory('Pluf_User')
            ->getCount(array('filter' => $sql->gen()));
        
        return $forgestats;
    }
}