gnu-social/plugins/Poll/PollPlugin.php

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<?php
/**
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2011, StatusNet, Inc.
*
* A plugin to enable social-bookmarking functionality
*
* 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 PollPlugin
* @package StatusNet
* @author Brion Vibber <brion@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')) {
exit(1);
}
/**
* Poll plugin main class
*
* @category PollPlugin
* @package StatusNet
* @author Brion Vibber <brionv@status.net>
* @author Evan Prodromou <evan@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 PollPlugin extends MicroAppPlugin
{
const VERSION = '0.1';
// @fixme which domain should we use for these namespaces?
const POLL_OBJECT = 'http://apinamespace.org/activitystreams/object/poll';
const POLL_RESPONSE_OBJECT = 'http://apinamespace.org/activitystreams/object/poll-response';
/**
* Database schema setup
*
* @see Schema
* @see ColumnDef
*
* @return boolean hook value; true means continue processing, false means stop.
*/
function onCheckSchema()
{
$schema = Schema::get();
$schema->ensureTable('poll', Poll::schemaDef());
$schema->ensureTable('poll_response', Poll_response::schemaDef());
return true;
}
/**
* Show the CSS necessary for this plugin
*
* @param Action $action the action being run
*
* @return boolean hook value
*/
function onEndShowStyles($action)
{
$action->cssLink($this->path('poll.css'));
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 'ShowpollAction':
case 'NewpollAction':
case 'RespondpollAction':
include_once $dir . '/' . strtolower(mb_substr($cls, 0, -6)) . '.php';
return false;
case 'Poll':
case 'Poll_response':
include_once $dir.'/'.$cls.'.php';
return false;
case 'NewPollForm':
case 'PollResponseForm':
case 'PollResultForm':
include_once $dir.'/'.strtolower($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/poll/new',
array('action' => 'newpoll'));
$m->connect('main/poll/:id',
array('action' => 'showpoll'),
array('id' => '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}'));
$m->connect('main/poll/response/:id',
array('action' => 'showpollresponse'),
array('id' => '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}'));
$m->connect('main/poll/:id/respond',
array('action' => 'respondpoll'),
array('id' => '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}'));
return true;
}
/**
* Plugin version data
*
* @param array &$versions array of version data
*
* @return value
*/
function onPluginVersion(&$versions)
{
$versions[] = array('name' => 'Poll',
'version' => self::VERSION,
'author' => 'Brion Vibber',
'homepage' => 'http://status.net/wiki/Plugin:Poll',
'rawdescription' =>
_m('Simple extension for supporting basic polls.'));
return true;
}
function types()
{
return array(self::POLL_OBJECT, self::POLL_RESPONSE_OBJECT);
}
/**
* When a notice is deleted, delete the related Poll
*
* @param Notice $notice Notice being deleted
*
* @return boolean hook value
*/
function deleteRelated($notice)
{
$p = Poll::getByNotice($notice);
if (!empty($p)) {
$p->delete();
}
return true;
}
/**
* Save a poll from an activity
*
* @param Profile $profile Profile to use as author
* @param Activity $activity Activity to save
* @param array $options Options to pass to bookmark-saving code
*
* @return Notice resulting notice
*/
function saveNoticeFromActivity($activity, $profile, $options=array())
{
// @fixme
common_log(LOG_DEBUG, "XXX activity: " . var_export($activity, true));
common_log(LOG_DEBUG, "XXX profile: " . var_export($profile, true));
common_log(LOG_DEBUG, "XXX options: " . var_export($options, true));
// Ok for now, we can grab stuff from the XML entry directly.
// This won't work when reading from JSON source
if ($activity->entry) {
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$pollElements = $activity->entry->getElementsByTagNameNS(self::POLL_OBJECT, 'poll');
$responseElements = $activity->entry->getElementsByTagNameNS(self::POLL_OBJECT, 'response');
if ($dataElements->length) {
$data = $dataElements->item(0);
$question = $data->getAttribute('question');
$opts = array();
foreach ($data->attributes as $node) {
$name = $node->nodeName;
if (substr($name, 0, 6) == 'option') {
$n = intval(substr($name, 6));
if ($n > 0) {
$opts[$n - 1] = $node->nodeValue;
}
}
}
common_log(LOG_DEBUG, "YYY question: $question");
common_log(LOG_DEBUG, "YYY opts: " . var_export($opts, true));
try {
$notice = Poll::saveNew($profile, $question, $opts, $options);
common_log(LOG_DEBUG, "YYY ok: " . $notice->id);
return $notice;
} catch (Exception $e) {
common_log(LOG_DEBUG, "YYY fail: " . $e->getMessage());
}
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} else if ($responseElements->length) {
$data = $responseElements->item(0);
$pollUri = $data->getAttribute('poll');
$selection = intval($data->getAttribute('selection'));
if (!$pollUri) {
throw new Exception('Invalid poll response: no poll reference.');
}
$poll = Poll::staticGet('uri', $pollUri);
if (!$poll) {
throw new Exception('Invalid poll response: poll is unknown.');
}
try {
$notice = Poll_response::saveNew($profile, $poll, $selection, $options);
common_log(LOG_DEBUG, "YYY response ok: " . $notice->id);
return $notice;
} catch (Exception $e) {
common_log(LOG_DEBUG, "YYY response fail: " . $e->getMessage());
}
} else {
common_log(LOG_DEBUG, "YYY no poll data");
}
}
}
function activityObjectFromNotice($notice)
{
assert($this->isMyNotice($notice));
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switch ($notice->object_type) {
case self::POLL_OBJECT:
return $this->activityObjectFromNoticePoll($notice);
case self::POLL_RESPONSE_OBJECT:
return $this->activityObjectFromNoticePollResponse($notice);
default:
throw new Exception('Unexpected type for poll plugin: ' . $notice->object_type);
}
}
function activityObjectFromNoticePoll($notice)
{
$object = new ActivityObject();
$object->id = $notice->uri;
$object->type = self::POLL_OBJECT;
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$object->title = $notice->content;
$object->summary = $notice->content;
$object->link = $notice->bestUrl();
$response = Poll_response::getByNotice($notice);
$poll = $response->getPoll();
/**
* For the moment, using a kind of icky-looking schema that happens to
* work with out code for generating both Atom and JSON forms, though
* I don't like it:
*
* <poll:response xmlns:poll="http://apinamespace.org/activitystreams/object/poll"
* poll="http://..../poll/...."
* selection="3" />
*
* "poll:response": {
* "xmlns:poll": http://apinamespace.org/activitystreams/object/poll
* "uri": "http://..../poll/...."
* "selection": 3
* }
*
*/
// @fixme there's no way to specify an XML node tree here, like <poll><option/><option/></poll>
// @fixme there's no way to specify a JSON array or multi-level tree unless you break the XML attribs
// @fixme XML node contents don't get shown in JSON
$data = array('xmlns:poll' => self::POLL_OBJECT,
'poll' => $poll->uri,
'selection' => intval($response->selection));
$object->extra[] = array('poll:response', $data, '');
return $object;
}
function activityObjectFromNoticePollResponse($notice)
{
$object = new ActivityObject();
$object->id = $notice->uri;
$object->type = self::POLL_RESPONSE_OBJECT;
$object->title = $notice->content;
$object->summary = $notice->content;
$object->link = $notice->bestUrl();
$poll = Poll::getByNotice($notice);
/**
* Adding the poll-specific data. There's no standard in AS for polls,
* so we're making stuff up.
*
* For the moment, using a kind of icky-looking schema that happens to
* work with out code for generating both Atom and JSON forms, though
* I don't like it:
*
* <poll:data xmlns:poll="http://apinamespace.org/activitystreams/object/poll"
* question="Who wants a poll question?"
* option1="Option one"
* option2="Option two"
* option3="Option three"></poll:data>
*
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* "poll:response": {
* "xmlns:poll": http://apinamespace.org/activitystreams/object/poll
* "question": "Who wants a poll question?"
* "option1": "Option one"
* "option2": "Option two"
* "option3": "Option three"
* }
*
*/
// @fixme there's no way to specify an XML node tree here, like <poll><option/><option/></poll>
// @fixme there's no way to specify a JSON array or multi-level tree unless you break the XML attribs
// @fixme XML node contents don't get shown in JSON
$data = array('xmlns:poll' => self::POLL_OBJECT,
'question' => $poll->question);
foreach ($poll->getOptions() as $i => $opt) {
$data['option' . ($i + 1)] = $opt;
}
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$object->extra[] = array('poll:poll', $data, '');
return $object;
}
/**
* @fixme WARNING WARNING WARNING parent class closes the final div that we
* open here, but we probably shouldn't open it here. Check parent class
* and Bookmark plugin for if that's right.
*/
function showNotice($notice, $out)
{
switch ($notice->object_type) {
case self::POLL_OBJECT:
return $this->showNoticePoll($notice, $out);
case self::POLL_RESPONSE_OBJECT:
return $this->showNoticePollResponse($notice, $out);
default:
throw new Exception('Unexpected type for poll plugin: ' . $notice->object_type);
}
}
function showNoticePoll($notice, $out)
{
$user = common_current_user();
// @hack we want regular rendering, then just add stuff after that
$nli = new NoticeListItem($notice, $out);
$nli->showNotice();
$out->elementStart('div', array('class' => 'entry-content poll-content'));
$poll = Poll::getByNotice($notice);
if ($poll) {
if ($user) {
$profile = $user->getProfile();
$response = $poll->getResponse($profile);
if ($response) {
// User has already responded; show the results.
$form = new PollResultForm($poll, $out);
} else {
$form = new PollResponseForm($poll, $out);
}
$form->show();
}
} else {
$out->text('Poll data is missing');
}
$out->elementEnd('div');
// @fixme
$out->elementStart('div', array('class' => 'entry-content'));
}
function showNoticePollResponse($notice, $out)
{
$user = common_current_user();
// @hack we want regular rendering, then just add stuff after that
$nli = new NoticeListItem($notice, $out);
$nli->showNotice();
// @fixme
$out->elementStart('div', array('class' => 'entry-content'));
}
function entryForm($out)
{
return new NewPollForm($out);
}
// @fixme is this from parent?
function tag()
{
return 'poll';
}
function appTitle()
{
return _m('Poll');
}
}