From b0ddde22c000dcb495dc149bf4a628747bc672ba Mon Sep 17 00:00:00 2001
From: Michael Vogel <icarus@dabo.de>
Date: Sun, 23 Aug 2015 22:21:15 +0200
Subject: [PATCH] By entering a GNU Social account name, the friends of this
 contact will be added to the friendica account

---
 include/ostatus.php | 51 +++++++++++++++++++++++++++++++++++++++++++++
 include/poller.php  |  3 +++
 mod/settings.php    |  9 ++++++++
 3 files changed, 63 insertions(+)

diff --git a/include/ostatus.php b/include/ostatus.php
index 369659f2d..a086177a7 100644
--- a/include/ostatus.php
+++ b/include/ostatus.php
@@ -7,11 +7,62 @@ require_once("mod/share.php");
 require_once("include/enotify.php");
 require_once("include/socgraph.php");
 require_once("include/Photo.php");
+require_once("include/Scrape.php");
+require_once("include/follow.php");
 
 define('OSTATUS_DEFAULT_POLL_INTERVAL', 30); // given in minutes
 define('OSTATUS_DEFAULT_POLL_TIMEFRAME', 1440); // given in minutes
 define('OSTATUS_DEFAULT_POLL_TIMEFRAME_MENTIONS', 14400); // given in minutes
 
+function ostatus_check_follow_friends() {
+	$r = q("SELECT `uid`,`v` FROM `pconfig` WHERE `cat`='system' AND `k`='ostatus_legacy_contact' AND `v` != ''");
+
+	if (!$r)
+		return;
+
+	foreach ($r AS $contact) {
+		ostatus_follow_friends($contact["uid"], $contact["v"]);
+		set_pconfig($contact["uid"], "system", "ostatus_legacy_contact", "");
+	}
+}
+
+function ostatus_follow_friends($uid, $url) {
+	$contact = probe_url($url);
+
+	if (!$contact)
+		return;
+
+	$api = $contact["baseurl"]."/api/";
+
+	// Fetching friends
+	$data = z_fetch_url($api."statuses/friends.json?screen_name=".$contact["nick"]);
+
+	if (!$data["success"])
+		return;
+
+	$friends = json_decode($data["body"]);
+
+	foreach ($friends AS $friend) {
+		$url = $friend->statusnet_profile_url;
+		$r = q("SELECT `url` FROM `contact` WHERE `uid` = %d AND
+			(`nurl` = '%s' OR `alias` = '%s' OR `alias` = '%s') AND
+			`network` != '%s' LIMIT 1",
+ 			intval($uid), dbesc(normalise_link($url)),
+			dbesc(normalise_link($url)), dbesc($url), dbesc(NETWORK_STATUSNET));
+		if (!$r) {
+			$data = probe_url($friend->statusnet_profile_url);
+			if ($data["network"] == NETWORK_OSTATUS) {
+				$result = new_contact($uid,$friend->statusnet_profile_url);
+				if ($result["success"])
+					logger($friend->name." ".$url." - success", LOGGER_DEBUG);
+				else
+					logger($friend->name." ".$url." - failed", LOGGER_DEBUG);
+			} else
+				logger($friend->name." ".$url." - not OStatus", LOGGER_DEBUG);
+		}
+	}
+}
+
 function ostatus_fetchauthor($xpath, $context, $importer, &$contact, $onlyfetch) {
 
 	$author = array();
diff --git a/include/poller.php b/include/poller.php
index b72a4a823..28dc0c0cd 100644
--- a/include/poller.php
+++ b/include/poller.php
@@ -118,6 +118,9 @@ function poller_run(&$argv, &$argc){
 	// Check every conversation
 	check_conversations(false);
 
+	// Follow your friends from your legacy OStatus account
+	ostatus_check_follow_friends();
+
 	// update nodeinfo data
 	nodeinfo_cron();
 
diff --git a/mod/settings.php b/mod/settings.php
index ca0829f02..cddabcb8b 100644
--- a/mod/settings.php
+++ b/mod/settings.php
@@ -189,6 +189,7 @@ function settings_post(&$a) {
 		if(x($_POST, 'general-submit')) {
 			set_pconfig(local_user(), 'system', 'no_intelligent_shortening', intval($_POST['no_intelligent_shortening']));
 			set_pconfig(local_user(), 'system', 'ostatus_autofriend', intval($_POST['snautofollow']));
+			set_pconfig(local_user(), 'system', 'ostatus_legacy_contact', $_POST['legacy_contact']);
 		} elseif(x($_POST, 'imap-submit')) {
 
 			$mail_server       = ((x($_POST,'mail_server')) ? $_POST['mail_server'] : '');
@@ -769,6 +770,14 @@ function settings_content(&$a) {
 		$settings_connectors .= '<span class="field_help">'.t('If you receive a message from an unknown OStatus user, this option decides what to do. If it is checked, a new contact will be created for every unknown user.').'</span>';
 		$settings_connectors .= '</div>';
 
+		$legacy_contact = get_pconfig(local_user(), 'system', 'ostatus_legacy_contact');
+
+		$settings_connectors .= '<div id="legacy-contact-wrapper" class="field input">';
+		$settings_connectors .= '<label id="legacy-contact-label" for="snautofollow-checkbox">'. t('Your legacy GNU Social account'). '</label>';
+		$settings_connectors .= '<input id="legacy-contact-checkbox" name="legacy_contact" value="'.$legacy_contact.'"/>';
+		$settings_connectors .= '<span class="field_help">'.t('If you enter your old GNU Social/Statusnet account name here (in the format user@domain.tld), your contacts will be added automatically. The field will be emptied when done.').'</span>';
+		$settings_connectors .= '</div>';
+
 		$settings_connectors .= '<div class="settings-submit-wrapper" ><input type="submit" name="general-submit" class="settings-submit" value="' . t('Save Settings') . '" /></div>';
 
 		$settings_connectors .= '</div><div class="clear"></div>';