From 9d9588a3deefbd908210ea3b47575e6d1e70939d Mon Sep 17 00:00:00 2001
From: Evan Prodromou <evan@prodromou.name>
Date: Thu, 29 May 2008 13:08:01 -0400
Subject: [PATCH] @ messages

darcs-hash:20080529170801-84dde-765f70013696c46bee65bf1408ff4a0b379711d7.gz
---
 actions/shownotice.php |  2 +-
 actions/showstream.php |  2 +-
 lib/stream.php         |  2 +-
 lib/util.php           | 42 +++++++++++++++++++++++++++++++++++++++---
 4 files changed, 42 insertions(+), 6 deletions(-)

diff --git a/actions/shownotice.php b/actions/shownotice.php
index b189fdb87f..4bf4238cd4 100644
--- a/actions/shownotice.php
+++ b/actions/shownotice.php
@@ -69,7 +69,7 @@ class ShownoticeAction extends Action {
 					   $profile->nickname);
 		# FIXME: URL, image, video, audio
 		common_element_start('span', array('class' => 'content'));
-		common_raw(common_render_content($notice->content));
+		common_raw(common_render_content($notice->content, $notice));
 		common_element_end('span');
 		common_element('span', array('class' => 'date'),
 					   common_date_string($notice->created));
diff --git a/actions/showstream.php b/actions/showstream.php
index d4af631327..fdf3d33bd4 100644
--- a/actions/showstream.php
+++ b/actions/showstream.php
@@ -315,7 +315,7 @@ class ShowstreamAction extends StreamAction {
 		if ($notice->find(true)) {
 			# FIXME: URL, image, video, audio
 			common_element_start('span', array('class' => 'content'));
-			common_raw(common_render_content($notice->content));
+			common_raw(common_render_content($notice->content, $notice));
 			common_element_end('span');
 		}
 
diff --git a/lib/stream.php b/lib/stream.php
index b6834eb45a..ac683367f1 100644
--- a/lib/stream.php
+++ b/lib/stream.php
@@ -48,7 +48,7 @@ class StreamAction extends Action {
 					   $profile->nickname);
 		# FIXME: URL, image, video, audio
 		common_element_start('span', array('class' => 'content'));
-		common_raw(common_render_content($notice->content));
+		common_raw(common_render_content($notice->content, $notice));
 		common_element_end('span');
 		$noticeurl = common_local_url('shownotice', array('notice' => $notice->id));
 		common_element('a', array('class' => 'notice',
diff --git a/lib/util.php b/lib/util.php
index 1b308d14ea..4ed1a4afb8 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -349,11 +349,47 @@ function common_canonical_email($email) {
 	return $email;
 }
 
-function common_render_content($text) {
-	# XXX: @ messages
+function common_render_content($text, $notice=NULL) {
+	$r = htmlspecialchars($text);
+	if ($notice) {
+		$id = $notice->profile_id;
+		$r = preg_replace('/\b@([\w-]{1-64})\b/e', "@common_at_link($id, '\\1')", $r);
+	}
 	# XXX: # tags
 	# XXX: machine tags
-	return htmlspecialchars($text);
+	return $r;
+}
+
+function common_at_link($profile_id, $nickname) {
+	# Try to find profiles this profile is subscribed to that have this nickname
+	$profile = new Profile();
+	# XXX: chokety and bad
+	$profile->whereAdd('EXISTS (SELECT subscribed from subscription where subscriber = '.$profile_id.' and subscribed = id)', 'AND');
+	$profile->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
+	if ($profile->find(TRUE)) {
+		return '<a href="'.$profile->profileurl.'" class="atlink tolistenee">'.$nickname.'</a>';
+	}
+	# Try to find profiles that listen to this profile and that have this nickname
+	$profile = new Profile();
+	# XXX: chokety and bad
+	$profile->whereAdd('EXISTS (SELECT subscriber from subscription where subscribed = '.$profile_id.' and subscriber = id)', 'AND');
+	$profile->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
+	if ($profile->find(TRUE)) {
+		return '<a href="'.$profile->profileurl.'" class="atlink tolistener">'.$nickname.'</a>';
+	}
+	# If this is a local user, try to find a local user with that nickname.
+	$sender = User::staticGet($profile_id);
+	if ($sender) {
+		$recipient = User::staticGet('nickname', $nickname);
+		if ($recipient) {
+			$profile = $recipient->getProfile();
+			return '<a href="'.$profile->profileurl.'" class="atlink usertouser">'.$nickname.'</a>';
+		}
+	}
+	# Otherwise, no links. @messages from local users to remote users,
+	# or from remote users to other remote users, are just
+	# outside our ability to make intelligent guesses about
+	return $nickname;
 }
 
 // where should the avatar go for this user?