+/**
+ * @brief Fetches the conversation url for a given item link or conversation id
+ *
+ * @param string $self The link to the posting
+ * @param string $conversation_id The conversation id
+ *
+ * @return string The conversation url
+ */
+function ostatus_fetch_conversation($self, $conversation_id = "") {
+
+ if ($conversation_id != "") {
+ $elements = explode(":", $conversation_id);
+
+ if ((count($elements) <= 2) OR ($elements[0] != "tag"))
+ return $conversation_id;
+ }
+
+ if ($self == "")
+ return "";
+
+ $json = str_replace(".atom", ".json", $self);
+
+ $raw = fetch_url($json);
+ if ($raw == "")
+ return "";
+
+ $data = json_decode($raw);
+ if (!is_object($data))
+ return "";
+
+ $conversation_id = $data->statusnet_conversation_id;
+
+ $pos = strpos($self, "/api/statuses/show/");
+ $base_url = substr($self, 0, $pos);
+
+ return $base_url."/conversation/".$conversation_id;
+}
+
+/**
+ * @brief Fetches actor details of a given actor and user id
+ *
+ * @param string $actor The actor url
+ * @param int $uid The user id
+ * @param int $contact_id The default contact-id
+ *
+ * @return array Array with actor details
+ */
+function ostatus_get_actor_details($actor, $uid, $contact_id) {
+
+ $details = array();
+
+ $contact = q("SELECT `id`, `rel`, `network` FROM `contact` WHERE `uid` = %d AND `nurl` = '%s' AND `network` != '%s'",
+ $uid, normalise_link($actor), NETWORK_STATUSNET);
+
+ if (!$contact)
+ $contact = q("SELECT `id`, `rel`, `network` FROM `contact` WHERE `uid` = %d AND `alias` IN ('%s', '%s') AND `network` != '%s'",
+ $uid, $actor, normalise_link($actor), NETWORK_STATUSNET);
+
+ if ($contact) {
+ logger("Found contact for url ".$actor, LOGGER_DEBUG);
+ $details["contact_id"] = $contact[0]["id"];
+ $details["network"] = $contact[0]["network"];
+
+ $details["not_following"] = !in_array($contact[0]["rel"], array(CONTACT_IS_SHARING, CONTACT_IS_FRIEND));
+ } else {
+ logger("No contact found for user ".$uid." and url ".$actor, LOGGER_DEBUG);
+
+ // Adding a global contact
+ /// @TODO Use this data for the post
+ $details["global_contact_id"] = get_contact($actor, 0);
+
+ logger("Global contact ".$global_contact_id." found for url ".$actor, LOGGER_DEBUG);