Initial commit.

inc/expiration.php

@@ -0,0 +1,47 @@
+<?php
+/**
+ * @package CleverOgre
+ * @subpackage OgreAlert
+ * @since OgreAlert 0.1.7
+ */
+
+namespace OgreAlert;
+
+if (!defined('ABSPATH')) exit;
+
+class Expiration {
+
+    public static function load() {
+        add_filter('ogrealert/valid_id', array(__CLASS__, 'check'), 10, 2);
+    }
+
+    static function check($valid, $id) {
+        if (!is_int($id)) return $valid;
+
+        $exp_time = self::get_timestamp($id);
+        if (!$exp_time) return $valid;
+
+        $remaining = $exp_time - time();
+        if ($remaining <= 0) {
+            wp_trash_post($id);
+            $valid = false;
+        }
+
+        return $valid;
+    }
+
+    public static function get_timestamp($id) {
+        $meta_value = get_post_meta($id, '_ogrealert_expiration', true);
+        if (empty($meta_value)) return false;
+
+        if (preg_match('/^\d{4}-\d{2}-\d{2}$/', $meta_value) !== 1) return false;
+
+        $exp_time = strtotime($meta_value);
+        if (!$exp_time) return false;
+
+        return $exp_time;
+    }
+
+}
+
+\OgreAlert\Expiration::load();