<?php
/*
* Name: Mastodon Custom Emojis
* Description: Replace emojis shortcodes in Mastodon posts with their originating server custom emojis images.
* Version: 1.0
* Author: Hypolite Petovan
*/
use Friendica\Core\Addon;
function mastodoncustomemojis_install()
{
Addon::registerHook('put_item_in_cache', __FILE__, 'mastodoncustomemojis_put_item_in_cache');
Addon::registerHook('network_mod_init', __FILE__, 'mastodoncustomemojis_css_hook');
Addon::registerHook('display_mod_init', __FILE__, 'mastodoncustomemojis_css_hook');
Addon::registerHook('search_mod_init', __FILE__, 'mastodoncustomemojis_css_hook');
Addon::registerHook('community_mod_init', __FILE__, 'mastodoncustomemojis_css_hook');
Addon::registerHook('contacts_mod_init', __FILE__, 'mastodoncustomemojis_css_hook');
}
function mastodoncustomemojis_uninstall()
{
Addon::unregisterHook('put_item_in_cache', __FILE__, 'mastodoncustomemojis_put_item_in_cache');
Addon::unregisterHook('network_mod_init', __FILE__, 'mastodoncustomemojis_css_hook');
Addon::unregisterHook('display_mod_init', __FILE__, 'mastodoncustomemojis_css_hook');
Addon::unregisterHook('search_mod_init', __FILE__, 'mastodoncustomemojis_css_hook');
Addon::unregisterHook('community_mod_init', __FILE__, 'mastodoncustomemojis_css_hook');
Addon::unregisterHook('contacts_mod_init', __FILE__, 'mastodoncustomemojis_css_hook');
}
function mastodoncustomemojis_css_hook(Friendica\App $a)
{
$a->page['htmlhead'] .= <<<HTML
<!-- Style added by mastodoncustomemojis -->
<style type="text/css">
.emoji.mastodon {
height: 1.2em;
vertical-align: middle;
}
</style>
HTML;
}
function mastodoncustomemojis_put_item_in_cache(Friendica\App $a, &$hook_data)
{
// Mastodon uses OStatus, skipping other network protocols
if ($hook_data['item']['network'] != Friendica\Core\Protocol::OSTATUS) {
return;
}
$emojis = mastodoncustomemojis_get_custom_emojis_for_author($hook_data['item']['author-link']);
$hook_data["rendered-html"] = Friendica\Content\Smilies::replaceFromArray($hook_data["rendered-html"], $emojis);
}
function mastodoncustomemojis_get_custom_emojis_for_author($author_link)
{
$return = ['texts' => [], 'icons' => []];
$url_parts = parse_url($author_link);
$api_base_url = $url_parts['scheme'] . '://' . $url_parts['host'] . ($url_parts['port'] ? ':' . $url_parts['port'] : '');
$cache_key = 'mastodoncustomemojis:' . $api_base_url;
$emojis = Friendica\Core\Cache::get($cache_key);
if (empty($emojis)) {
// Reset the emojis array
$emojis = $return;
$api_url = $api_base_url . '/api/v1/custom_emojis';
$ret = Friendica\Util\Network::fetchUrlFull($api_url);
if ($ret['success']) {
$emojis_array = json_decode($ret['body'], true);
if (is_array($emojis_array)) {
foreach ($emojis_array as $emoji) {
$emojis['texts'][] = ':' . $emoji['shortcode'] . ':';
$emojis['icons'][] = '<img class="emoji mastodon" src="' . proxy_url($emoji['static_url']) . '" alt=":' . $emoji['shortcode'] . ':" title=":' . $emoji['shortcode'] . ':"/>';
}
}
}
Friendica\Core\Cache::set($cache_key, $emojis, Friendica\Core\Cache::WEEK);
$return = $emojis;
}
return $return;
}