From a10bdd8f0e436e8bb41430ca5d18fb2e1682773c Mon Sep 17 00:00:00 2001
From: Tim Almdal <tnalmdal@shaw.ca>
Date: Mon, 1 Feb 2010 17:13:29 -0800
Subject: Add a task scheduling module.  In the admin maintenance, create an
 event from an existing task.  When the task becomes due, it will run
 depending on traffic to the web site.  It uses the gallery_shutdown event to
 time slice the task.

---
 modules/scheduler/controllers/admin_schedule.php | 105 +++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 modules/scheduler/controllers/admin_schedule.php

(limited to 'modules/scheduler/controllers/admin_schedule.php')

diff --git a/modules/scheduler/controllers/admin_schedule.php b/modules/scheduler/controllers/admin_schedule.php
new file mode 100644
index 00000000..6911cf86
--- /dev/null
+++ b/modules/scheduler/controllers/admin_schedule.php
@@ -0,0 +1,105 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2009 Bharat Mediratta
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+class Admin_Schedule_Controller extends Admin_Controller {
+  public function form_add($task_callback) {
+    access::verify_csrf();
+
+    $schedule = ORM::factory("schedule");
+    $schedule->task_callback = $task_callback;
+    $schedule->next_run_datetime = time();
+    $v = new View("admin_schedule.html");
+    $v->form = scheduler::get_form("define", $schedule);
+    $v->method = "define";
+    print $v;
+  }
+
+  public function update_form($id) {
+    access::verify_csrf();
+
+
+    $schedule = ORM::factory("schedule", $id);
+    $v = new View("admin_schedule.html");
+    $v->form = scheduler::get_form("update", $schedule);
+    $v->method = "update";
+    print $v;
+  }
+
+  public function remove_form($id) {
+    access::verify_csrf();
+
+    $schedule = ORM::factory("schedule", $id);
+
+    $v = new View("admin_schedule_confirm.html");
+    $v->name = $schedule->name;
+    $v->form = new Forge("admin/schedule/remove/{$id}", "", "post",
+                         array("id" => "g-remove-schedule"));
+    $group = $v->form->group("remove");
+    $group->submit("")->value(t("Continue"));
+    print $v;
+  }
+
+  public function remove($id) {
+    access::verify_csrf();
+    $schedule = ORM::factory("schedule", $id);
+    $schedule->delete();
+
+    message::success(t("Removed scheduled task: %name", array("name" => $schedule->name)));
+    print json_encode(array("result" => "success", "reload" => 1));
+  }
+
+  public function define() {
+    $this->_handle_request("define");
+   }
+
+  public function update($id=null) {
+    $this->_handle_request("update", $id);
+   }
+
+  private function _handle_request($method, $id=null) {
+    $schedule = ORM::factory("schedule", $id);
+    $form = scheduler::get_form($method, $schedule);
+    $valid = $form->validate();
+    if ($valid) {
+      $schedule->name = $form->schedule_group->schedule_name->value;
+      $schedule->interval = $form->schedule_group->interval->value;
+      $schedule->next_run_datetime =
+        $this->_start_date($form->schedule_group->run_date->dow->selected,
+                           $form->schedule_group->run_date->time->value);
+      $schedule->task_callback = $form->schedule_group->callback->value;
+      $schedule->save();
+      if ($method == "define") {
+        message::success(t("Added scheduled task: %name", array("name" => $schedule->name)));
+      } else {
+        message::success(t("Updated scheduled task: %name", array("name" => $schedule->name)));
+      }
+      print json_encode(array("result" => "success", "reload" => 1));
+    } else {
+      print json_encode(array("result" => "error", "form" => (string) $form));
+    }
+  }
+
+  private function _start_date($dow, $time) {
+    list ($hour, $minutes) = explode(":", $time);
+    $local_time = localtime();
+    $days = ($dow < $local_time[6] ? 7 : 0) + $dow - $local_time[6];
+    return
+      mktime($hour, $minutes, 0, $local_time[4] + 1, $local_time[3] + $days, 1900 + $local_time[5]);
+  }
+}
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