a SUP action to product correct SUP json output

darcs-hash:20081026033353-5ed1f-f449572d9069add47dd88749be73e7550d260a0f.gz

diff --git a/actions/sup.php b/actions/sup.php
new file mode 100644 (file)
index 0000000..887017b
--- /dev/null
+++ b/actions/sup.php
@@ -0,0 +1,81 @@
+<?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); }
+
+class SupAction extends Action {
+       
+       function handle($args) {
+               
+               parent::handle($args);
+               
+               $seconds = $this->trimmed('seconds');
+               
+               if (!$seconds) {
+                       $seconds = 15;
+               }
+
+               $updates = $this->get_updates($seconds);
+               
+               header('Content-Type: application/json; charset=utf-8');
+               
+               print json_encode(array('updated_time' => date('c'),
+                                                               'since_time' => date('c', time() - $seconds),
+                                                               'available_periods' => $this->available_periods(),
+                                                               'period' => $seconds,
+                                                               'updates' => $updates));
+       }
+       
+       function available_periods() {
+               static $periods = array(86400, 43200, 21600, 7200,
+                                                               3600, 1800,     600, 300, 120,
+                                                               60, 30, 15); 
+               $available = array();
+               foreach ($periods as $period) {
+                       $available[$period] = common_local_url('sup',
+                                                                                                  array('seconds' => $period));
+               }
+               
+               return $available;
+       }
+       
+       function get_updates($seconds) {
+               $notice = new Notice();
+
+               # XXX: cache this. Depends on how big this protocol becomes;
+               # Re-doing this query every 15 seconds isn't the end of the world.
+
+               $notice->query('SELECT profile_id, max(id) AS max_id ' .
+                                          'FROM notice ' .
+                                          'WHERE created > (now() - ' . $seconds . ') ' .
+                                          'GROUP BY profile_id');
+               
+               $updates = array();
+               
+               while ($notice->fetch()) {
+                       $updates[] = array($notice->profile_id, $notice->max_id);
+               }
+               
+               return $updates;
+       }
+       
+       function is_readonly() {
+               return true;
+       }
+}