friendica-addons/discourse/discourse.php
2019-11-23 23:43:59 +00:00

225 lines
6.2 KiB
PHP

<?php
/**
* Name: Discourse Mail Connector
* Description: Improves mails from Discourse in mailing list mode
* Version: 0.1
* Author: Michael Vogel <http://pirati.ca/profile/heluecht>
*
*/
//use DOMDocument;
//use DOMXPath;
use Friendica\App;
use Friendica\Core\Hook;
use Friendica\Core\L10n;
use Friendica\Core\Logger;
use Friendica\Core\PConfig;
use Friendica\Util\XML;
use Friendica\Content\Text\Markdown;
use Friendica\Util\Network;
Use Friendica\Util\DateTimeFormat;
function discourse_install()
{
Hook::register('email_getmessage', __FILE__, 'discourse_email_getmessage');
Hook::register('email_getmessage_end', __FILE__, 'discourse_email_getmessage_end');
Hook::register('addon_settings', __FILE__, 'discourse_addon_settings');
Hook::register('addon_settings_post', __FILE__, 'discourse_addon_settings_post');
}
function discourse_uninstall()
{
Hook::unregister('email_getmessage', __FILE__, 'discourse_email_getmessage');
Hook::unregister('email_getmessage_end', __FILE__, 'discourse_email_getmessage_end');
Hook::unregister('addon_settings', __FILE__, 'discourse_addon_settings');
Hook::unregister('addon_settings_post', __FILE__, 'discourse_addon_settings_post');
}
function discourse_addon_settings(App $a, &$s)
{
}
function discourse_addon_settings_post(App $a)
{
}
function discourse_email_getmessage(App $a, &$message)
{
// Logger::info('Got raw message', $message);
// Remove the title on comments, they don't serve any purpose there
if ($message['item']['parent-uri'] != $message['item']['uri']) {
unset($message['item']['title']);
}
if (preg_match('=topic/(.*)/(.*)@(.*)=', $message['item']['uri'], $matches)) {
Logger::info('Got post data', ['topic' => $matches[1], 'post' => $matches[2], 'host' => $matches[3]]);
if (discourse_fetch_post_from_api($message, $matches[2], $matches[3])) {
return;
}
}
// Search in the text part for the link to the discourse entry and the text body
// The text body is used as alternative, if the fetched HTML isn't working
if (!empty($message['text'])) {
discourse_get_text($message);
}
if (!empty($message['item']['plink'])) {
if (preg_match('=(http.*)/t/.*/(.*\d)/(.*\d)=', $message['item']['plink'], $matches)) {
if (discourse_fetch_topic_from_api($message, $matches[1], $matches[1], $matches[1])) {
return;
}
}
}
// Search in the HTML part for the discourse entry and the author profile
if (!empty($message['html'])) {
discourse_get_html($message);
}
}
function discourse_fetch_topic_from_api(&$message, $host, $topic, $pid)
{
$url = $host . '/t/' . $topic . '/posts.json?posts_ids[]=' . $pid;
$curlResult = Network::curl($url);
if (!$curlResult->isSuccess()) {
return false;
}
$raw = $curlResult->getBody();
$data = json_decode($raw, true);
$posts = $data['post_stream']['posts'];
foreach($posts as $post) {
if ($post['post_number'] != $pid) {
continue;
}
Logger::info('Got post data from topic', $post);
discourse_process_post($message, $post);
return true;
}
return false;
}
function discourse_fetch_post_from_api(&$message, $post, $host)
{
$url = "https://" . $host . '/posts/' . $post . '.json';
$curlResult = Network::curl($url);
if (!$curlResult->isSuccess()) {
return false;
}
$raw = $curlResult->getBody();
$data = json_decode($raw, true);
if (empty($data)) {
return false;
}
discourse_process_post($message, $data);
Logger::info('Got API data', $message);
return true;
}
function discourse_process_post(&$message, $post)
{
if ($post['post_number'] == 1) {
// Thread information
}
$nick = $post['username'];
$name = $post['name'];
// User information
$message['html'] = $post['cooked'];
$message['text'] = $post['raw'];
$message['item']['created'] = DateTimeFormat::utc($post['created_at']);
}
function discourse_get_html(&$message)
{
$doc = new DOMDocument();
$doc2 = new DOMDocument();
$doc->preserveWhiteSpace = false;
$html = mb_convert_encoding($message['html'], 'HTML-ENTITIES', "UTF-8");
@$doc->loadHTML($html, LIBXML_HTML_NODEFDTD);
$xpath = new DomXPath($doc);
// Fetch the first 'div' before the 'hr' -hopefully this fits for all systems
$result = $xpath->query("//hr//preceding::div[1]");
$div = $doc2->importNode($result->item(0), true);
$doc2->appendChild($div);
$message['html'] = $doc2->saveHTML();
Logger::info('Found html body', ['html' => $message['html']]);
$profile = discourse_get_profile($xpath);
if (!empty($profile)) {
Logger::info('Found profile', $profile);
/*
$message['item']['author-avatar'] = $contact['avatar'];
$message['item']['author-link'] = $profile['link'];
$message['item']['author-name'] = $profile['name'];
*/
}
}
function discourse_get_text(&$message)
{
$text = $message['text'];
$text = str_replace("\r", '', $text);
$pos = strpos($text, "\n---\n");
if ($pos > 0) {
$message['text'] = trim(substr($text, 0, $pos));
Logger::info('Found text body', ['text' => $message['text']]);
$message['text'] = Markdown::toBBCode($message['text']);
$text = substr($text, $pos);
if (preg_match('=\((http.*?)\)=', $text, $link)) {
$message['item']['plink'] = $link[1];
Logger::info('Found plink', ['plink' => $message['item']['plink']]);
}
} else {
Logger::info('No separator found', ['text' => $text]);
}
}
function discourse_get_profile($xpath)
{
$profile = [];
$list = $xpath->query("//td//following::img");
foreach ($list as $node) {
$attr = [];
foreach ($node->attributes as $attribute) {
$attr[$attribute->name] = $attribute->value;
}
if (!empty($attr['src']) && !empty($attr['title'])
&& !empty($attr['width']) && !empty($attr['height'])
&& ($attr['width'] == $attr['height'])) {
$profile = ['avatar' => $attr['src'], 'name' => $attr['title']];
break;
}
}
$list = $xpath->query("//td//following::a");
foreach ($list as $node) {
if (!empty(trim($node->textContent)) && $node->attributes->length) {
$attr = [];
foreach ($node->attributes as $attribute) {
$attr[$attribute->name] = $attribute->value;
}
if (!empty($attr['href']) && (strpos($attr['href'], '/' . $profile['name']))) {
$profile['link'] = $attr['href'];
break;
}
}
}
return $profile;
}
function discourse_email_getmessage_end(App $a, &$message)
{
// Logger::info('Got converted message', $message);
}