forked from friendica/friendica-addons
README updated, code restructured
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discourse/README
117
discourse/README
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@ -1,97 +1,28 @@
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NSFW
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Discourse connector
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===================
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"Not safe for work"
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The Discourse connectors detects incoming mails from Discourse and
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improves them by fetching the content and user data via API.
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Scans the message content for the string 'nsfw'
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(case insensitive) and if found replaces the content
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with a "click to open/close" link, default is closed.
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Prerequisites
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-------------
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The user has to configure the mail interface so that the user's mails
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can be fetched via Friendica. Then the user has to activate the
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mailing list mode in Discourse.
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If you click on the 'Not safe for work' addon under
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/settings/addon a text field appears, where you can
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extend the list of search terms. The terms must be
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seperated by commas.
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The mailing list mode in Discourse knows two different options:
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1. Get all posts - including your own. This will create duplicates
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if you post via Friendica.
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2. Don't get your own posts. Then you will missing all your posts
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that you made directly on Discourse. Since you cannot create
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a new post via this connector (only comments are possible)
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this is not a goog choice either.
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It is also possible to enter profile URLs as values.
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This is quite useful for the case, that you perhaps
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don't want to see postings by person_A, but person_B
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is one of your contacts and person_B used to reshare
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postings by person_A.
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You can also make use of regular expressions.
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They also have to be seperated by commas and the
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regex itself has to be enclosed with slashes:
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... nsfw, /<REGEX>/, politics,...
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---------------
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A few examples:
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---------------
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1)
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Let's say you don't want to see postings which contain
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the term 'fake news'
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The term could appear in several ways:
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fakenews, fake news, fake_news, fake-news, f@ke news,
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f4ke news, f4k3 n3ws, and so on and so on and so on.
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You could write every possible version of it as single
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item into your NSFW-filter list, but this can also be
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done with a single regex, which matches all of them:
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/f[@4a]k[3e][-_ ]n[3e]w[sz]/
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2)
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Another use case could be, that you are simply not
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interested in postings about christmas.
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/christmas(?:[-_ ]?(?:tree|time|eve|pudding))?/
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ATTENTION:
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It is absolutely important, that you use grouping
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parentheses instead of capturing parentheses!!
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Grouping parentheses are:
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(?: )
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If you use capturing parentheses, which are
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( )
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it will produce errors and the regex won't work and
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at least your targets will not get collapsed.
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3)
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Another possibility is the usage of a so called
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'lookbehind' construct. I'll give an example followed
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by a descripton:
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/(?<!the )\badvent\b/
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The \b is a word boundary, what matches the beginning
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and the end of a word. The simple pattern of 'advent'
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would match advent iteself, but also adventure.
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This can be prevented by
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/\badvent\b/
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The first part of the regex above
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(?<!the )
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is a negative lookbehind. It makes \badvent\b only
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match, if there is no 'the ' before \badvent\b or in
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words:
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It looks for 'advent', but doesn't match 'the advent'.
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For more informations take a look at the PCRE regex
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dialect.
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Known problems
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--------------
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- You can't create starting posts
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- Either you don't get your own posts you made directly on Discourse
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or you do get duplicates for every post you made via Friendica.
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- Non public categories are currently only working via some workaround
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without the API, which most likely will cause some content problems.
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- links to Discourse profiles in the posts are invalid.
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@ -25,18 +25,16 @@ Use Friendica\Util\DateTimeFormat;
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function discourse_install()
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{
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Hook::register('email_getmessage', __FILE__, 'discourse_email_getmessage');
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Hook::register('email_getmessage_end', __FILE__, 'discourse_email_getmessage_end');
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Hook::register('addon_settings', __FILE__, 'discourse_addon_settings');
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Hook::register('addon_settings_post', __FILE__, 'discourse_addon_settings_post');
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Hook::register('email_getmessage', __FILE__, 'discourse_email_getmessage');
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Hook::register('addon_settings', __FILE__, 'discourse_settings');
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Hook::register('addon_settings_post', __FILE__, 'discourse_settings_post');
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}
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function discourse_uninstall()
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{
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Hook::unregister('email_getmessage', __FILE__, 'discourse_email_getmessage');
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Hook::unregister('email_getmessage_end', __FILE__, 'discourse_email_getmessage_end');
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Hook::unregister('addon_settings', __FILE__, 'discourse_addon_settings');
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Hook::unregister('addon_settings_post', __FILE__, 'discourse_addon_settings_post');
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Hook::unregister('email_getmessage', __FILE__, 'discourse_email_getmessage');
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Hook::unregister('connector_settings', __FILE__, 'discourse_settings');
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Hook::unregister('connector_settings_post', __FILE__, 'discourse_settings_post');
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}
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function discourse_addon_settings(App $a, &$s)
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@ -51,28 +49,35 @@ function discourse_email_getmessage(App $a, &$message)
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{
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// Logger::info('Got raw message', $message);
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/* if (preg_match('=topic/(.*)/(.*)@(.*)=', $message['item']['uri'], $matches)) {
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Logger::info('Got post data', ['topic' => $matches[1], 'post' => $matches[2], 'host' => $matches[3]]);
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if (discourse_fetch_post_from_api($message, $matches[2], $matches[3])) {
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return;
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}
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// We do assume that all Discourse servers are running with SSL
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if (preg_match('=topic/(.*\d)/(.*\d)@(.*)=', $message['item']['uri'], $matches) &&
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discourse_fetch_post_from_api($message, $matches[2], $matches[3])) {
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Logger::info('Fetched comment via API', ['host' => $matches[3], 'topic' => $matches[1], 'post' => $matches[2]]);
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return;
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}
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*/
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if (preg_match('=topic/(.*\d)@(.*)=', $message['item']['uri'], $matches) &&
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discourse_fetch_topic_from_api($message, 'https://' . $matches[2], $matches[1], 1)) {
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discourse_fetch_post_from_api($message, $matches[2], $matches[3]);
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Logger::info('Fetched starting post via API', ['host' => $matches[2], 'topic' => $matches[1]]);
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return;
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}
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// Search in the text part for the link to the discourse entry and the text body
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// The text body is used as alternative, if the fetched HTML isn't working
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if (!empty($message['text'])) {
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$message = discourse_get_text($message);
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}
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if (!empty($message['item']['plink'])) {
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if (preg_match('=(http.*)/t/.*/(.*\d)/(.*\d)=', $message['item']['plink'], $matches)) {
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if (discourse_fetch_topic_from_api($message, $matches[1], $matches[2], $matches[3])) {
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return;
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}
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}
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if (empty($message['item']['plink']) || !preg_match('=(http.*)/t/.*/(.*\d)/(.*\d)=', $message['item']['plink'], $matches)) {
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Logger::info('This is no Discourse post');
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}
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Logger::info('Stop');
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die('Test');
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if (discourse_fetch_topic_from_api($message, $matches[1], $matches[2], $matches[3])) {
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Logger::info('Fetched post from via API', ['host' => $matches[1], 'topic' => $matches[2], 'id' => $matches[3]]);
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return;
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}
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Logger::info('Fallback mode');
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// Search in the HTML part for the discourse entry and the author profile
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if (!empty($message['html'])) {
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$message = discourse_get_html($message);
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@ -98,8 +103,7 @@ function discourse_fetch_post($host, $topic, $pid)
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$posts = $data['post_stream']['posts'];
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foreach($posts as $post) {
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if ($post['post_number'] != $pid) {
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// Test
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discourse_get_user($post, $host);
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/// @todo Possibly fetch missing posts here
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continue;
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}
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Logger::info('Got post data from topic', $post);
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@ -146,9 +150,11 @@ function discourse_get_user($post, $hostaddr)
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{
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$host = parse_url($hostaddr, PHP_URL_HOST);
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// Currently unused contact fields:
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// - display_username
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// - user_id
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$contact = [];
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// display_username
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// user_id
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$contact['uid'] = 0;
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$contact['network'] = Protocol::DISCOURSE;
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$contact['name'] = $contact['nick'] = $post['username'];
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@ -198,7 +204,7 @@ function discourse_process_post($message, $post, $hostaddr)
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if ($post['post_number'] == 1) {
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$message['item']['parent-uri'] = $message['item']['uri'] = 'topic/' . $post['topic_id'] . '@' . $host;
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// To-Do: Thread information
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/// @ToDo Fetch thread information
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} else {
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$message['item']['uri'] = 'topic/' . $post['topic_id'] . '/' . $post['id'] . '@' . $host;
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unset($message['item']['title']);
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@ -224,7 +230,7 @@ function discourse_get_html($message)
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$xpath = new DomXPath($doc);
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// Fetch the first 'div' before the 'hr' -hopefully this fits for all systems
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// Fetch the first 'div' before the 'hr' - hopefully this fits for all systems
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$result = $xpath->query("//hr//preceding::div[1]");
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$div = $doc2->importNode($result->item(0), true);
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$doc2->appendChild($div);
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@ -232,7 +238,7 @@ function discourse_get_html($message)
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Logger::info('Found html body', ['html' => $message['html']]);
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$profile = discourse_get_profile($xpath);
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if (!empty($profile)) {
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if (!empty($profile['url'])) {
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Logger::info('Found profile', $profile);
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$message['item']['author-id'] = Contact::getIdForURL($profile['url'], 0, true, $profile);
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$message['item']['author-link'] = $profile['url'];
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@ -301,8 +307,3 @@ function discourse_get_profile($xpath)
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}
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return $profile;
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}
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function discourse_email_getmessage_end(App $a, &$message)
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{
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// Logger::info('Got converted message', $message);
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}
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