From 024d632396def58c335944cae24371a10a3306b9 Mon Sep 17 00:00:00 2001
From: MaZderMind
Date: Tue, 31 Mar 2015 23:17:01 +0200
Subject: Implement Relive based on the MVT Pattern

---
 config.php             |  7 ++++++
 index.php              |  7 +-----
 model/Relive.php       | 66 ++++++++++++++++++++++++++++++++++++++++++++++----
 template/relive.phtml  |  5 ++--
 view/relive-player.php |  8 +++---
 view/relive.php        |  6 ++++-
 6 files changed, 80 insertions(+), 19 deletions(-)

diff --git a/config.php b/config.php
index af427d7..7acfe4d 100644
--- a/config.php
+++ b/config.php
@@ -82,6 +82,13 @@ $GLOBALS['CONFIG']['CONFERENCE'] = array(
 	 * Wird beides auskommentiert, wird der Link nicht angezeigt
 	 */
 	'RELIVE_JSON' => 'http://vod.c3voc.de/index.json',
+
+	/**
+	 * APCU-Cache-Zeit in Sekunden
+	 * Wird diese Zeile auskommentiert, werden die apc_*-Methoden nicht verwendet und
+	 * das Relive-Json bei jedem Request von der Quelle geladen und geparst
+	 */
+	'RELIVE_JSON_CACHE' => 30*60,
 );
 
 /**
diff --git a/index.php b/index.php
index 5292f82..0e5117f 100644
--- a/index.php
+++ b/index.php
@@ -15,6 +15,7 @@ require_once('model/Room.php');
 require_once('model/RoomTab.php');
 require_once('model/RoomSelection.php');
 require_once('model/Stream.php');
+require_once('model/Relive.php');
 
 $route = @$_GET['route'];
 $route = rtrim($route, '/');
@@ -61,9 +62,6 @@ try {
 
 	else if(preg_match('@^relive/([0-9]+)$@', $route, $m))
 	{
-		if(!has('OVERVIEW.RELIVE_JSON'))
-			return require('view/404.php');
-
 		$_GET = array(
 			'id' => $m[1],
 		);
@@ -72,9 +70,6 @@ try {
 
 	else if(preg_match('@^relive$@', $route, $m))
 	{
-		if(!has('OVERVIEW.RELIVE_JSON'))
-			return require('view/404.php');
-
 		require('view/relive.php');
 	}
 
diff --git a/model/Relive.php b/model/Relive.php
index 3ffdc1b..a76761c 100644
--- a/model/Relive.php
+++ b/model/Relive.php
@@ -2,9 +2,18 @@
 
 class Relive extends ModelBase
 {
-	function relive_talks()
+	public function isEnabled()
 	{
-		$talks = @file_get_contents(get('OVERVIEW.RELIVE_JSON'));
+		// having CONFERENCE.RELIVE is not enough!
+		return $this->has('CONFERENCE.RELIVE_JSON');
+	}
+
+	public function getTalks()
+	{
+		if($talks_by_id = $this->getCached())
+			return $talks_by_id;
+
+		$talks = file_get_contents($this->get('CONFERENCE.RELIVE_JSON'));
 		$talks = utf8_decode($talks);
 		$talks = (array)json_decode($talks, true);
 
@@ -14,11 +23,58 @@ class Relive extends ModelBase
 		});
 
 		$talks_by_id = array();
-		foreach ($talks as $value)
+		foreach ($talks as $talk)
 		{
-			$talks_by_id[$value['id']] = $value;
+			if($talk['status'] == 'released')
+				$talk['url'] = $talk['release_url'];
+			else
+				$talk['url'] = 'relive/'.rawurlencode($talk['id']).'/';
+
+			$talks_by_id[$talk['id']] = $talk;
 		}
 
-		return $talks_by_id;
+		return $this->doCache($talks_by_id);
+	}
+
+	public function getTalk($id)
+	{
+		$talks = $this->getTalks();
+		if(!isset($talks[$id]))
+			throw new NotFoundException('Relive-Talk id '.$id);
+
+		return $talks[$id];
+	}
+
+	private function isCacheEnabled()
+	{
+		return $this->has('CONFERENCE.RELIVE_JSON_CACHE') && function_exists('apc_fetch') && function_exists('apc_store');
+	}
+
+	private function getCacheDuration()
+	{
+		return $this->get('CONFERENCE.RELIVE_JSON_CACHE', 60*10 /* 10 minutes */);
+	}
+
+	private $localCache = null;
+	private function getCached()
+	{
+		if($this->localCache)
+			return $this->localCache;
+
+		if(!$this->isCacheEnabled())
+			return null;
+
+		return apc_fetch('RELIVE.CACHE');
+	}
+
+	private function doCache($value)
+	{
+		$this->localCache = $value;
+
+		if(!$this->isCacheEnabled())
+			return $value;
+
+		apc_store('RELIVE.CACHE', $value, $this->getCacheDuration());
+		return $value;
 	}
 }
diff --git a/template/relive.phtml b/template/relive.phtml
index b26dd20..94e4acf 100644
--- a/template/relive.phtml
+++ b/template/relive.phtml
@@ -21,20 +21,19 @@
 			</div>
 		<? else: ?>
 			<? foreach ($talks as $talk): ?>
-				<? $url = ($talk['status'] == 'released') ? $talk['release_url'] : link_vod($talk['id']) ?>
 				<div class="col-xs-12 recording">
 					<div class="panel panel-default">
 						<div class="panel-heading">
 
 							<h3 class="panel-title">
-								<a href="<?=h($url)?>">
+								<a href="<?=h($talk['url'])?>">
 									<?=h($talk['title'])?>
 								</a>
 							</h3>
 
 						</div>
 						<div class="panel-body">
-							<a href="<?=h($url)?>">
+							<a href="<?=h($talk['url'])?>">
 								<img class="preview" alt="<?=h($talk['title'])?>" class="video-thumbnail" src="<?=h($talk['thumbnail'])?>" width="213" height="120" />
 							</a>
 
diff --git a/view/relive-player.php b/view/relive-player.php
index bc8bb57..587286b 100644
--- a/view/relive-player.php
+++ b/view/relive-player.php
@@ -1,10 +1,10 @@
 <?php
 
-$talks_by_id = relive_talks();
-$talk = @$talks_by_id[intval($_GET['id'])];
+$relive = new Relive();
+if(!$relive->isEnabled())
+	throw new NotFoundException('Internal Relive is disabled');
 
-if(!$talk)
-	return require('page/404.php');
+$talk = $relive->getTalk(intval($_GET['id']));
 
 echo $tpl->render(array(
 	'page' => 'relive-player',
diff --git a/view/relive.php b/view/relive.php
index 0608423..686d61e 100644
--- a/view/relive.php
+++ b/view/relive.php
@@ -1,7 +1,11 @@
 <?php
+$relive = new Relive();
+if(!$relive->isEnabled())
+	throw new NotFoundException('Internal Relive is disabled');
+
 
 echo $tpl->render(array(
 	'page' => 'relive',
 	'title' => 'Relive!',
-	'talks' => relive_talks(),
+	'talks' => $relive->getTalks(),
 ));
-- 
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