<?php
/**
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2011, StatusNet, Inc.
*
* Microapp plugin for Questions and Answers
*
* PHP version 5
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category QuestionAndAnswer
* @package StatusNet
* @author Zach Copley <zach@status.net>
* @copyright 2011 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET')) {
// This check helps protect against security problems;
// your code file can't be executed directly from the web.
exit(1);
}
/**
* Question and Answer plugin
*
* @category Plugin
* @package StatusNet
* @author Zach Copley <zach@status.net>
* @copyright 2011 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
*/
class QuestionAndAnswerPlugin extends MicroappPlugin
{
/**
* Set up our tables (question and answer)
*
* @see Schema
* @see ColumnDef
*
* @return boolean hook value; true means continue processing, false means stop.
*/
function onCheckSchema()
{
$schema = Schema::get();
$schema->ensureTable('question', Question::schemaDef());
$schema->ensureTable('answer', Answer::schemaDef());
return true;
}
/**
* Load related modules when needed
*
* @param string $cls Name of the class to be loaded
*
* @return boolean hook value; true means continue processing, false means stop.
*/
function onAutoload($cls)
{
$dir = dirname(__FILE__);
switch ($cls)
{
case 'NewquestionAction':
case 'NewanswerAction':
case 'ShowquestionAction':
case 'ShowanswerAction':
include_once $dir . '/' . strtolower(mb_substr($cls, 0, -6)) . '.php';
return false;
case 'QuestionForm':
case 'AnswerForm':
include_once $dir . '/'.strtolower($cls).'.php';
break;
case 'Question':
case 'Answer':
include_once $dir . '/'.$cls.'.php';
return false;
default:
return true;
}
}
/**
* Map URLs to actions
*
* @param Net_URL_Mapper $m path-to-action mapper
*
* @return boolean hook value; true means continue processing, false means stop.
*/
function onRouterInitialized($m)
{
$m->connect('main/question/new',
array('action' => 'newquestion'));
$m->connect('main/question/answer',
array('action' => 'newanswer'));
$m->connect('question/:id',
array('action' => 'showquestion'),
array('id' => '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}'));
$m->connect('answer/:id',
array('action' => 'showanswer'),
array('id' => '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}'));
return true;
}
function onPluginVersion(&$versions)
{
$versions[] = array(
'name' => 'QuestionAndAnswer',
'version' => STATUSNET_VERSION,
'author' => 'Zach Copley',
'homepage' => 'http://status.net/wiki/Plugin:QuestionAndAnswer',
'description' =>
_m('Question and Answers micro-app.')
);
return true;
}
function appTitle() {
return _m('Question');
}
function tag() {
return 'question';
}
function types() {
/*
return array(Happening::OBJECT_TYPE,
RSVP::POSITIVE,
RSVP::NEGATIVE,
RSVP::POSSIBLE);
*/
}
/**
* Given a parsed ActivityStreams activity, save it into a notice
* and other data structures.
*
* @param Activity $activity
* @param Profile $actor
* @param array $options=array()
*
* @return Notice the resulting notice
*/
function saveNoticeFromActivity($activity, $actor, $options=array())
{
if (count($activity->objects) != 1) {
throw new Exception('Too many activity objects.');
}
$questionObj = $activity->objects[0];
if ($questinoObj->type != Question::OBJECT_TYPE) {
throw new Exception('Wrong type for object.');
}
$notice = null;
switch ($activity->verb) {
case ActivityVerb::POST:
$notice = Question::saveNew(
$actor,
$questionObj->title
// null,
// $questionObj->summary,
// $options
);
break;
case Answer::NORMAL:
case Answer::ANONYMOUS:
$question = Question::staticGet('uri', $questionObj->id);
if (empty($question)) {
// FIXME: save the question
throw new Exception("Answer to unknown question.");
}
$notice = Answer::saveNew($actor, $question, $activity->verb, $options);
break;
default:
throw new Exception("Unknown verb for question");
}
return $notice;
}
/**
* Turn a Notice into an activity object
*
* @param Notice $notice
*
* @return ActivityObject
*/
function activityObjectFromNotice($notice)
{
$question = null;
switch ($notice->object_type) {
case Question::OBJECT_TYPE:
$question = Qeustion::fromNotice($notice);
break;
case Answer::NORMAL:
case Answer::ANONYMOUS:
$answer = Answer::fromNotice($notice);
$question = $answer->getQuestion();
break;
}
if (empty($question)) {
throw new Exception("Unknown object type.");
}
$notice = $question->getNotice();
if (empty($notice)) {
throw new Exception("Unknown question notice.");
}
$obj = new ActivityObject();
$obj->id = $question->uri;
$obj->type = Question::OBJECT_TYPE;
$obj->title = $question->title;
$obj->link = $notice->bestUrl();
// XXX: probably need other stuff here
return $obj;
}
/**
* Change the verb on Answer notices
*
* @param Notice $notice
*
* @return ActivityObject
*/
function onEndNoticeAsActivity($notice, &$act) {
switch ($notice->object_type) {
case Answer::NORMAL:
case Answer::ANONYMOUS:
$act->verb = $notice->object_type;
break;
}
return true;
}
/**
* Custom HTML output for our notices
*
* @param Notice $notice
* @param HTMLOutputter $out
*/
function showNotice($notice, $out)
{
switch ($notice->object_type) {
case Question::OBJECT_TYPE:
$this->showQuestionNotice($notice, $out);
break;
case Answer::NORMAL:
case Answer::ANONYMOUS:
case RSVP::POSSIBLE:
$this->showAnswerNotice($notice, $out);
break;
}
$out->elementStart('div', array('class' => 'question'));
$profile = $notice->getProfile();
$avatar = $profile->getAvatar(AVATAR_MINI_SIZE);
$out->element('img',
array('src' => ($avatar) ?
$avatar->displayUrl() :
Avatar::defaultImage(AVATAR_MINI_SIZE),
'class' => 'avatar photo bookmark-avatar',
'width' => AVATAR_MINI_SIZE,
'height' => AVATAR_MINI_SIZE,
'alt' => $profile->getBestName()));
$out->raw(' '); // avoid for AJAX XML compatibility
$out->elementStart('span', 'vcard author'); // hack for belongsOnTimeline; JS needs to be able to find the author
$out->element('a',
array('class' => 'url',
'href' => $profile->profileurl,
'title' => $profile->getBestName()),
$profile->nickname);
$out->elementEnd('span');
}
function showAnswerNotice($notice, $out)
{
$rsvp = Answer::fromNotice($notice);
$out->elementStart('div', 'answer');
$out->raw($answer->asHTML());
$out->elementEnd('div');
return;
}
function showQuestionNotice($notice, $out)
{
$profile = $notice->getProfile();
$question = Question::fromNotice($notice);
assert(!empty($question));
assert(!empty($profile));
$out->elementStart('div', 'question-notice');
$out->elementStart('h3');
if (!empty($question->url)) {
$out->element('a',
array('href' => $question->url,
'class' => 'question-title'),
$question->title);
} else {
$out->text($question->title);
}
if (!empty($question->location)) {
$out->elementStart('div', 'question-location');
$out->element('strong', null, _('Location: '));
$out->element('span', 'location', $question->location);
$out->elementEnd('div');
}
if (!empty($question->description)) {
$out->elementStart('div', 'question-description');
$out->element('strong', null, _('Description: '));
$out->element('span', 'description', $question->description);
$out->elementEnd('div');
}
$answers = $question->getAnswers();
$out->elementStart('div', 'question-answers');
$out->element('strong', null, _('Answer: '));
$out->element('span', 'question-answer');
// XXX I dunno
$out->elementEnd('div');
$user = common_current_user();
if (!empty($user)) {
$question = $question->getAnswer($user->getProfile());
if (empty($answer)) {
$form = new AnswerForm($question, $out);
}
$form->show();
}
$out->elementEnd('div');
}
/**
* Form for our app
*
* @param HTMLOutputter $out
* @return Widget
*/
function entryForm($out)
{
return new QuestionForm($out);
}
/**
* When a notice is deleted, clean up related tables.
*
* @param Notice $notice
*/
function deleteRelated($notice)
{
switch ($notice->object_type) {
case Question::OBJECT_TYPE:
common_log(LOG_DEBUG, "Deleting question from notice...");
$question = Question::fromNotice($notice);
$question->delete();
break;
case Answer::NORMAL:
case Answer::ANONYMOUS:
common_log(LOG_DEBUG, "Deleting answer from notice...");
$answer = Answer::fromNotice($notice);
common_log(LOG_DEBUG, "to delete: $answer->id");
$answer->delete();
break;
default:
common_log(LOG_DEBUG, "Not deleting related, wtf...");
}
}
function onEndShowScripts($action)
{
// XXX maybe some cool shiz here
}
function onEndShowStyles($action)
{
$action->cssLink($this->path('questionandanswer.css'));
return true;
}
}