From b879a1ddf1575a3bd355edcee634be4a8d179c25 Mon Sep 17 00:00:00 2001
From: Michael Vogel <icarus@dabo.de>
Date: Sun, 11 Mar 2012 17:45:12 +0100
Subject: [PATCH] Pages: Show every community page - even from foreign servers
 (with caching)

---
 addon/pages/pages.php        | 70 +++++++++++++++++++++++++++++-------
 view/theme/diabook/style.css |  3 ++
 2 files changed, 61 insertions(+), 12 deletions(-)

diff --git a/addon/pages/pages.php b/addon/pages/pages.php
index 13e6c4b59..6b242be31 100755
--- a/addon/pages/pages.php
+++ b/addon/pages/pages.php
@@ -15,25 +15,71 @@ function pages_uninstall() {
 	unregister_hook('page_end', 'addon/pages/pages.php', 'pages_page_end');
 }
 
+function pages_iscommunity($url, &$pagelist) {
+	// check every week for the status - should be enough
+	if ($pagelist[$url]["checked"]<time()-86400*7) {
+		// When too old or not found fetch the status from the profile
+		$ch = curl_init();
+
+		curl_setopt($ch, CURLOPT_URL, $url);
+		curl_setopt($ch, CURLOPT_HEADER, 0);
+		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+		curl_setopt($ch, CURLOPT_TIMEOUT, 2);
+ 
+		$page = curl_exec($ch);
+ 
+		curl_close($ch);
+
+		$iscommunity = (strpos($page, '<meta name="friendika.community" content="true" />') != 0);
+
+		$pagelist[$url] = array("community" => $iscommunity, "checked" => time());
+	} else // Fetch from cache
+		$iscommunity = $pagelist[$url]["community"];
+	return($iscommunity);
+}
+
+function pages_getpages($uid) {
+
+	// Fetch cached pagelist from configuration
+	$pagelist = get_pconfig($uid,'pages','pagelist');
+
+	if (sizeof($pagelist) == 0)
+		$pagelist = array();
+
+	$contacts = q("SELECT `id`, `url`, `Name` FROM `contact`
+			WHERE `network`= 'dfrn' AND `uid` = %d",
+			intval($uid));
+
+	$pages = array();
+
+	// Look if the profile is a community page
+	foreach($contacts as $contact) {
+		if (pages_iscommunity($contact["url"], $pagelist))
+			$pages[] = array("url"=>$contact["url"], "Name"=>$contact["Name"]);
+	}
+
+	// Write back cached pagelist
+	set_pconfig($uid,'pages','pagelist', $pagelist);
+	return($pages);
+}
+
 function pages_page_end($a,&$b) {
+	// Only move on if if it's the "network" module and there is a logged on user
 	if (($a->module != "network") OR ($a->user['uid'] == 0))
 		return;
 
-	$pages = '<div id="pages-sidebar" class="widget"><h3>'.t("Community").'</h3><ul>';
-	$contacts = q("SELECT `contact`.`id`, `contact`.`url`, `contact`.`Name` FROM `contact`, `user` 
-			WHERE `network`= 'dfrn' AND `duplex` 
-			AND `contact`.`nick`=`user`.`nickname`
-			AND `user`.`page-flags`= %d
-			AND `contact`.`uid` = %d",
-			intval(PAGE_COMMUNITY),
-			intval($a->user['uid']));
+	$pages = '<div id="pages-sidebar" class="widget">
+			<div class="title tool">
+			<h3>'.t("Community").'</h3></div>
+			<div id="sidebar-pages-list"><ul>';
+
+	$contacts = pages_getpages($a->user['uid']);
+
 	foreach($contacts as $contact) {
-		$pages .= '<li class="tool"><a href="'.$contact["url"].'">'.$contact["Name"]."</a></li>";
+		$pages .= '<li class="tool"><a href="'.$contact["url"].'" class="label" target="external-link">'.$contact["Name"]."</a></li>";
 	}
-	$pages .= "</ul>";
+	$pages .= "</ul></div></div>";
 	if (sizeof($contacts) > 0)
 		$a->page['aside'] = $pages.$a->page['aside'];
-
 }
-
 ?>
diff --git a/view/theme/diabook/style.css b/view/theme/diabook/style.css
index 0504ce96a..ce3307645 100644
--- a/view/theme/diabook/style.css
+++ b/view/theme/diabook/style.css
@@ -484,6 +484,9 @@ code {
 #sidebar-group-list .tool:hover {
 	background: #EEE;
 }
+#sidebar-pages-list .tool:hover {
+	background: #EEE;
+}
 .tool .label {
   float: left;
 }