Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
use Friendica\App;
use Friendica\Core\System;
use Friendica\Core\Worker;
use Friendica\Database\DBM;
use Friendica\Model\Contact;
use Friendica\Protocol\Diaspora;
/**
* @brief add/remove activity to an item
*
* Toggle activities as like,dislike,attend of an item
*
* @param string $item_id
* @param string $verb
* Activity verb. One of
* like, unlike, dislike, undislike, attendyes, unattendyes,
* attendno, unattendno, attendmaybe, unattendmaybe
* @hook 'post_local_end'
* array $arr
* 'post_id' => ID of posted item
*/
function do_like($item_id, $verb) {
$a = get_app();
if (!local_user() && !remote_user()) {
return false;
}
switch ($verb) {
case 'like':
$bodyverb = t('%1$s likes %2$s\'s %3$s');
$activity = ACTIVITY_LIKE;
break;
case 'unlike':
$bodyverb = t('%1$s doesn\'t like %2$s\'s %3$s');
$activity = ACTIVITY_LIKE;
break;
case 'dislike':
case 'undislike':
$bodyverb = t('%1$s doesn\'t like %2$s\'s %3$s');
$activity = ACTIVITY_DISLIKE;
break;
case 'attendyes':
case 'unattendyes':
$bodyverb = t('%1$s is attending %2$s\'s %3$s');
$activity = ACTIVITY_ATTEND;
break;
case 'attendno':
case 'unattendno':
$bodyverb = t('%1$s is not attending %2$s\'s %3$s');
$activity = ACTIVITY_ATTENDNO;
break;
case 'attendmaybe':
case 'unattendmaybe':
$bodyverb = t('%1$s may attend %2$s\'s %3$s');
$activity = ACTIVITY_ATTENDMAYBE;
break;
default:
logger('like: unknown verb ' . $verb . ' for item ' . $item_id);
return false;
}
// Enable activity toggling instead of on/off
$event_verb_flag = $activity === ACTIVITY_ATTEND || $activity === ACTIVITY_ATTENDNO || $activity === ACTIVITY_ATTENDMAYBE;
logger('like: verb ' . $verb . ' item ' . $item_id);
// Retrieve item
$items = q("SELECT * FROM `item` WHERE `id` = '%s' OR `uri` = '%s' LIMIT 1",
dbesc($item_id),
dbesc($item_id)
);
if (!$item_id || !DBM::is_result($items)) {
logger('like: unknown item ' . $item_id);
return false;
}
$item = $items[0];
$uid = $item['uid'];
if (($uid == 0) && local_user()) {
$uid = local_user();
}
if (!can_write_wall($a, $uid)) {
logger('like: unable to write on wall ' . $uid);
return false;
}
// Retrieves the local post owner
$owners = q("SELECT `contact`.* FROM `contact`
WHERE `contact`.`self`
AND `contact`.`uid` = %d",
intval($uid)
);
if (DBM::is_result($owners)) {
$owner_self_contact = $owners[0];
} else {
logger('like: unknown owner ' . $uid);
return false;
}
// Retrieve the current logged in user's public contact
$author_id = public_contact();
$contacts = q("SELECT * FROM `contact` WHERE `id` = %d",
intval($author_id)
);
if (DBM::is_result($contacts)) {
$author_contact = $contacts[0];
} else {
logger('like: unknown author ' . $author_id);
return false;
}
// Contact-id is the uid-dependant author contact
if (local_user() == $uid) {
$item_contact_id = $owner_self_contact['id'];
$item_contact = $owner_self_contact;
} else {
$item_contact_id = Contact::getIdForURL($author_contact['url'], $uid);
$contacts = q("SELECT * FROM `contact` WHERE `id` = %d",
intval($item_contact_id)
);
if (DBM::is_result($contacts)) {
$item_contact = $contacts[0];
} else {
logger('like: unknown item contact ' . $item_contact_id);
return false;
}
}
// Look for an existing verb row
// event participation are essentially radio toggles. If you make a subsequent choice,
// we need to eradicate your first choice.
if ($event_verb_flag) {
$verbs = "'" . dbesc(ACTIVITY_ATTEND) . "', '" . dbesc(ACTIVITY_ATTENDNO) . "', '" . dbesc(ACTIVITY_ATTENDMAYBE) . "'";
} else {
$verbs = "'".dbesc($activity)."'";
}
$existing_like = q("SELECT `id`, `guid`, `verb` FROM `item`
WHERE `verb` IN ($verbs)
AND `deleted` = 0
AND `author-id` = %d
AND `uid` = %d
AND (`parent` = '%s' OR `parent-uri` = '%s' OR `thr-parent` = '%s')
LIMIT 1",
intval($author_contact['id']),
intval($item['uid']),
dbesc($item_id), dbesc($item_id), dbesc($item['uri'])
);
// If it exists, mark it as deleted
if (DBM::is_result($existing_like)) {
$like_item = $existing_like[0];
// Already voted, undo it
q("UPDATE `item` SET `deleted` = 1, `unseen` = 1, `changed` = '%s' WHERE `id` = %d",
dbesc(datetime_convert()),
intval($like_item['id'])
);
// Clean up the Diaspora signatures for this like
// Go ahead and do it even if Diaspora support is disabled. We still want to clean up
// if it had been enabled in the past
dba::delete('sign', array('iid' => $like_item['id']));
$like_item_id = $like_item['id'];
Worker::add(PRIORITY_HIGH, "Notifier", "like", $like_item_id);
if (!$event_verb_flag || $like_item['verb'] == $activity) {
return true;
}
}
// Verb is "un-something", just trying to delete existing entries
if (strpos($verb, 'un') === 0) {
return true;
}
// Else or if event verb different from existing row, create a new item row
$post_type = (($item['resource-id']) ? t('photo') : t('status'));
if ($item['object-type'] === ACTIVITY_OBJ_EVENT) {
$post_type = t('event');
}
$objtype = $item['resource-id'] ? ACTIVITY_OBJ_IMAGE : ACTIVITY_OBJ_NOTE ;
$link = xmlify('<link rel="alternate" type="text/html" href="' . System::baseUrl() . '/display/' . $owner_self_contact['nick'] . '/' . $item['id'] . '" />' . "\n") ;
$body = $item['body'];
$obj = <<< EOT
<object>
<type>$objtype</type>
<local>1</local>
<id>{$item['uri']}</id>
<link>$link</link>
<title></title>
<content>$body</content>
</object>
EOT;
$ulink = '[url=' . $author_contact['url'] . ']' . $author_contact['name'] . '[/url]';
$alink = '[url=' . $item['author-link'] . ']' . $item['author-name'] . '[/url]';
$plink = '[url=' . System::baseUrl() . '/display/' . $owner_self_contact['nick'] . '/' . $item['id'] . ']' . $post_type . '[/url]';
$new_item = array(
'guid' => get_guid(32),
'uri' => item_new_uri($a->get_hostname(), $item['uid']),
'uid' => $item['uid'],
'contact-id' => $item_contact_id,
'type' => 'activity',
'wall' => $item['wall'],
'origin' => 1,
'gravity' => GRAVITY_LIKE,
'parent' => $item['id'],
'parent-uri' => $item['uri'],
'thr-parent' => $item['uri'],
'owner-id' => $item['owner-id'],
'owner-name' => $item['owner-name'],
'owner-link' => $item['owner-link'],
'owner-avatar' => $item['owner-avatar'],
'author-id' => $author_contact['id'],
'author-name' => $author_contact['name'],
'author-link' => $author_contact['url'],
'author-avatar' => $author_contact['thumb'],
'body' => sprintf($bodyverb, $ulink, $alink, $plink),
'verb' => $activity,
'object-type' => $objtype,
'object' => $obj,
'allow_cid' => $item['allow_cid'],
'allow_gid' => $item['allow_gid'],
'deny_cid' => $item['deny_cid'],
'deny_gid' => $item['deny_gid'],
'visible' => 1,
'unseen' => 1,
'last-child' => 0
);
$new_item_id = item_store($new_item);
// @todo: Explain this block
if (! $item['visible']) {
q("UPDATE `item` SET `visible` = 1 WHERE `id` = %d",
intval($item['id'])
);
}
// Save the author information for the like in case we need to relay to Diaspora
Diaspora::storeLikeSignature($item_contact, $new_item_id);
$new_item['id'] = $new_item_id;
call_hooks('post_local_end', $new_item);
Worker::add(PRIORITY_HIGH, "Notifier", "like", $new_item_id);
return true;
}