Homepage|Web: Cache blog news feeds and the latest stable release

web/plugins/z#home/home.php

@@ -59,37 +59,44 @@ public function execute($args=NULL)
         //includeHTML('latestversion', 'z#home');
 
         require_once(DENG_API_DIR.'/include/builds.inc.php');
-
         $user_platform = detect_user_platform();
-        $dl_link = 'http://dengine.net/';
-        switch ($user_platform) {
-            case 'windows':
-                $dl_link .= 'windows';
-                break;
-            case 'macx':
-                $dl_link .= 'mac_os';
-                break;
-            case 'linux':
-                $dl_link .= 'linux';
-                break;
-            default:
-                $dl_link .= 'source';
-                break;
-        }
-        // Find out the latest stable build.
-        $db = db_open();
-        $result = db_query($db, "SELECT version FROM ".DB_TABLE_BUILDS
-            ." WHERE type=".BT_STABLE." ORDER BY timestamp DESC LIMIT 1");
-        if ($row = $result->fetch_assoc()) {
-            $button_label = omit_zeroes($row['version']);
-        }
-        else {
-            $button_label = 'Download';            
+        $ckey = cache_key('home', ['latest_stable', $user_platform]);
+        if (cache_try_load($ckey)) {
+            cache_dump();
         }
-        $db->close();
+        else {        
+            $dl_link = 'http://dengine.net/';
+            switch ($user_platform) {
+                case 'windows':
+                    $dl_link .= 'windows';
+                    break;
+                case 'macx':
+                    $dl_link .= 'mac_os';
+                    break;
+                case 'linux':
+                    $dl_link .= 'linux';
+                    break;
+                default:
+                    $dl_link .= 'source';
+                    break;
+            }
+            // Find out the latest stable build.
+            $db = db_open();
+            $result = db_query($db, "SELECT version FROM ".DB_TABLE_BUILDS
+                ." WHERE type=".BT_STABLE." ORDER BY timestamp DESC LIMIT 1");
+            if ($row = $result->fetch_assoc()) {
+                $button_label = omit_zeroes($row['version']);
+            }
+            else {
+                $button_label = 'Download';            
+            }
+            $db->close();
 
-        echo("<div id='latestversion'><h1><div class='download-button'><a href='$dl_link' title='Download latest stable release'>$button_label <span class='downarrow'>&#x21E3;</span></a></div></h1></div>\n");
+            cache_echo("<div id='latestversion'><h1><div class='download-button'><a href='$dl_link' title='Download latest stable release'>$button_label <span class='downarrow'>&#x21E3;</span></a></div></h1></div>\n");
 
+            cache_dump();
+            cache_store($ckey);
+        }        
 ?><div id="contentbox"><?php
 
         //includeHTML('introduction', 'z#home');
@@ -324,28 +331,8 @@ public function execute($args=NULL)
         }
     });
 
-    /*$('#column1').interpretFeed({
-        feedUri: 'http://files.dengine.net/builds/events.rss',
-        dataType: 'xml',
-        maxItems: 3,
-        clearOnSuccess: false,
-        generateItemHtml: function (n, t) {
-            var html = '<div class="block"><article class="buildevent"><header><h1><a href="' + t.link + '" title="Read more about ' + t.title + ' in the repository">' + t.title + '</a></h1>';
-
-            var d = new Date(t.pubDate);
-            var niceDate = $.datepicker.formatDate('MM d, yy', d);
-            html += '<p><time datetime="' + d.toISOString() + '" pubdate>' + niceDate + '</time></p>';
-
-            html += '</header><br />';
-            html += t.atomSummary;
-            html += '</article>';
-            html += '<div class="links"><a href="' + n.feedUri + '" class="link-rss" title="Doomsday Engine build events are reported via RSS">All builds</a></div></div>';
-            return '<li>' + html + '</li>';
-        }
-    });*/
-
     $('#column2').interpretFeed({
-        feedUri: 'http://dengine.net/blog/category/news/?json=true',
+        feedUri: 'http://api.dengine.net/1/news?category=news',
         dataType: 'json',
         clearOnSuccess: false,
         maxItems: 2,
@@ -365,7 +352,7 @@ public function execute($args=NULL)
     });
 
     $('#column1').interpretFeed({
-        feedUri: 'http://dengine.net/blog/category/dev/?json=true', 
+        feedUri: 'http://api.dengine.net/1/news?category=dev', 
         dataType: 'json',
         clearOnSuccess: false,
         maxItems: 1,

webapi/1/news.php

@@ -0,0 +1,54 @@
+<?php
+/*
+ * Doomsday Web API: News
+ * Copyright (c) 2017 Jaakko Keränen <jaakko.keranen@iki.fi>
+ *
+ * License: GPL v2+
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 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 General
+ * Public License for more details. You should have received a copy of the GNU
+ * General Public License along with this program; if not, see:
+ * http://www.gnu.org/licenses/gpl.html
+ */
+
+require_once('include/cache.inc.php');
+
+function fetch_blog_feed($category)
+{
+    header('Content-Type: application/json');
+
+    $json_url = "http://dengine.net/blog/category/$category/?json=true";
+    $ckey = cache_key('news', $category);
+    if (cache_try_load($ckey)) {
+        cache_dump();
+        return;
+    }
+
+    $ch = curl_init(); 
+    curl_setopt($ch, CURLOPT_URL, $json_url); 
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // as a string
+    $output = curl_exec($ch); 
+    curl_close($ch);          
+
+    cache_echo($output);
+
+    cache_dump();
+    cache_store($ckey);
+}
+
+//---------------------------------------------------------------------------------------
+
+setlocale(LC_ALL, 'en_US.UTF-8');
+
+if ($_SERVER['REQUEST_METHOD'] == 'GET') {
+    if ($category = $_GET['category']) {
+        if ($category == 'news' || $category == 'dev') {
+            fetch_blog_feed($category);
+        }
+    }
+}