trac685 Twitter bridge - Shell script to sync all users' Twitter friends

darcs-hash:20081119011128-7b5ce-74471277443b44d0075f66131028447cfda3b1e4.gz

1 files changed, 199 insertions, 0 deletions

diff --git a/lib/twitter.php b/lib/twitter.php
new file mode 100644
index 000000000..6edbc3aa3
--- /dev/null
+++ b/lib/twitter.php
@@ -0,0 +1,199 @@
+<?php
+/*
+ * Laconica - a distributed open-source microblogging tool
+ * Copyright (C) 2008, Controlez-Vous, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+if (!defined('LACONICA')) { exit(1); }
+
+function get_twitter_data($uri, $screen_name, $password) {
+
+	$options = array(
+			CURLOPT_USERPWD => sprintf("%s:%s", $screen_name, $password),
+			CURLOPT_RETURNTRANSFER	=> true,
+			CURLOPT_FAILONERROR		=> true,
+			CURLOPT_HEADER			=> false,
+			CURLOPT_FOLLOWLOCATION	=> true,
+			// CURLOPT_USERAGENT		=> "identi.ca",
+			CURLOPT_CONNECTTIMEOUT	=> 120,
+			CURLOPT_TIMEOUT			=> 120
+	);
+
+
+	$ch = curl_init($uri);
+    curl_setopt_array($ch, $options);
+    $data = curl_exec($ch);
+    $errmsg = curl_error($ch);
+
+	if ($errmsg) {
+		common_debug("Twitter bridge - cURL error: $errmsg - trying to load: $uri with user $twit_user.",
+			__FILE__);
+	}
+
+	curl_close($ch);
+
+	return $data;
+}
+
+function twitter_user_info($screen_name, $password) {
+
+	$uri = "http://twitter.com/users/show/$screen_name.json";
+	$data = get_twitter_data($uri, $screen_name, $password);
+
+	if (!$data) {
+		return false;
+	}
+
+	$twit_user = json_decode($data);
+
+	if (!$twit_user) {
+		return false;
+	}
+
+	return $twit_user;
+}
+
+function update_twitter_user($fuser, $twitter_id, $screen_name) {
+
+	$original = clone($fuser);
+	$fuser->nickname = $screen_name;
+	$fuser->uri = 'http://twitter.com/' . $screen_name;
+	$result = $fuser->updateKeys($original);
+
+	if (!$result) {
+		common_log_db_error($fuser, 'UPDATE', __FILE__);
+		return false;
+	}
+
+	return true;
+}
+
+function add_twitter_user($twitter_id, $screen_name) {
+
+	// Otherwise, create a new Twitter user
+	$fuser = DB_DataObject::factory('foreign_user');
+
+	$fuser->nickname = $screen_name;
+	$fuser->uri = 'http://twitter.com/' . $screen_name;
+	$fuser->id = $twitter_id;
+	$fuser->service = 1; // Twitter
+	$fuser->created = common_sql_now();
+	$result = $fuser->insert();
+
+	if (!$result) {
+		common_debug("Twitter bridge - failed to add new Twitter user: $twitter_id - $screen_name.");
+		common_log_db_error($fuser, 'INSERT', __FILE__);
+		return false;
+	}
+
+	common_debug("Twitter bridge - Added new Twitter user: $screen_name ($twitter_id).");
+
+	return true;
+}
+
+// Creates or Updates a Twitter user
+function save_twitter_user($twitter_id, $screen_name) {
+
+	// Check to see whether the Twitter user is already in the system,
+	// and update its screen name and uri if so.
+	$fuser = Foreign_User::getForeignUser($twitter_id, 1);
+
+	if ($fuser) {
+
+		// Only update if Twitter screen name has changed
+		if ($fuser->nickname != $screen_name) {
+
+			common_debug('Twitter bridge - Updated nickname (and URI) for Twitter user ' .
+				"$fuser->id to $screen_name, was $fuser->nickname");
+
+			return update_twitter_user($fuser, $twitter_id, $screen_name);
+		}
+
+	} else {
+		return add_twitter_user($twitter_id, $screen_name);
+	}
+
+	return true;
+}
+
+function retreive_twitter_friends($twitter_id, $screen_name, $password) {
+
+	$uri = "http://twitter.com/statuses/friends/$twitter_id.json?page=";
+	$twitter_user = twitter_user_info($screen_name, $password);
+
+	// Calculate how many pages to get...
+	$pages = ceil($twitter_user->friends_count / 100);
+
+	if ($pages == 0) {
+		common_debug("Twitter bridge - Twitter user $screen_name has no friends! Lame.");
+	}
+
+	$friends = array();
+
+	for ($i = 1; $i <= $pages; $i++) {
+
+		$data = get_twitter_data($uri . $i, $screen_name, $password);
+
+		if (!$data) {
+			return NULL;
+		}
+
+		$more_friends = json_decode($data);
+
+		if (!$more_friends) {
+			return NULL;
+		}
+
+ 		$friends = array_merge($friends, $more_friends);
+	}
+
+	return $friends;
+}
+
+function save_twitter_friends($user, $twitter_id, $screen_name, $password) {
+
+	$friends = retreive_twitter_friends($twitter_id, $screen_name, $password);
+
+	if (is_null($friends)) {
+		common_debug("Twitter bridge - Couldn't get friends data from Twitter.");
+		return false;
+	}
+
+    foreach ($friends as $friend) {
+
+		$friend_name = $friend->screen_name;
+		$friend_id = $friend->id;
+
+		// Update or create the Foreign_user record
+		if (!save_twitter_user($friend_id, $friend_name)) {
+			return false;
+		}
+
+		// Check to see if there's a related local user
+		$flink = Foreign_link::getByForeignID($friend_id, 1);
+
+		if ($flink) {
+
+			// Get associated user and subscribe her
+			$friend_user = User::staticGet('id', $flink->user_id);
+			subs_subscribe_to($user, $friend_user);
+			common_debug("Twitter bridge - subscribed $friend_user->nickname to $user->nickname.");
+		}
+	}
+
+	return true;
+}
+