From 9ed0b741126ed46b7db6afc4ce9a900592ea4405 Mon Sep 17 00:00:00 2001
From: Brendan Heywood <brendan@catalyst-au.net>
Date: Thu, 26 Mar 2020 01:30:03 +1100
Subject: [PATCH] Added next 3 available window button for new outages #163

---
 classes/form/outage/edit.php |  3 ++-
 classes/local/outagelib.php  | 34 ++++++++++++++++++++++++++++++++++
 edit.php                     | 23 +++--------------------
 views/manage.php             | 22 ++++++++++++++++++----
 4 files changed, 57 insertions(+), 25 deletions(-)

diff --git a/classes/form/outage/edit.php b/classes/form/outage/edit.php
index b37df11..d27d77d 100644
--- a/classes/form/outage/edit.php
+++ b/classes/form/outage/edit.php
@@ -164,7 +164,8 @@ class edit extends moodleform {
 
             if (!empty($outage->id) && $outage->autostart && $outage->starttime < time() && $outage->stoptime > time()) {
                 $warning = $mform->getElement('warningreenablemaintenancemode');
-                $warning->setValue($OUTPUT->notification(get_string('warningreenablemaintenancemode', 'auth_outage'), 'notifywarning'));
+                $warning->setValue($OUTPUT->notification(get_string('warningreenablemaintenancemode', 'auth_outage'),
+                    'notifywarning'));
             }
         } else {
             throw new coding_exception('$outage must be an outage object.', $outage);
diff --git a/classes/local/outagelib.php b/classes/local/outagelib.php
index 2e28ff8..a6dceda 100644
--- a/classes/local/outagelib.php
+++ b/classes/local/outagelib.php
@@ -79,6 +79,40 @@ class outagelib {
         self::inject();
     }
 
+    /**
+     * Given a time, usually now, when is the next outage window?
+     */
+    public static function get_next_window($time = null) {
+
+        $config = self::get_config();
+
+        if (!$time) {
+            $time = time();
+        }
+
+        $default = $config->default_time;
+        if ($default) {
+
+            // First try natural language parsing.
+            $time = strtotime($default, $time);
+
+            // Lean on the Task API to convert the cron syntax to
+            // the next valid outage date and time.
+            $parts = explode(' ', $default);
+            if (count($parts) == 5) {
+                $task = new \core\task\calendar_cron_task();
+                $task->set_minute($parts[0]);
+                $task->set_hour($parts[1]);
+                $task->set_day($parts[2]);
+                $task->set_month($parts[3]);
+                $task->set_day_of_week($parts[4]);
+                $time = $task->get_next_scheduled_time();
+            }
+        }
+        return $time;
+    }
+
+
     /**
      * Will check for ongoing or warning outages and will attach the message bar as required.
      */
diff --git a/edit.php b/edit.php
index bbc6ad8..e2b0e18 100644
--- a/edit.php
+++ b/edit.php
@@ -47,6 +47,7 @@ if ($mform->is_cancelled()) {
 
 $clone = optional_param('clone', 0, PARAM_INT);
 $edit = optional_param('edit', 0, PARAM_INT);
+$time = optional_param('starttime', 0, PARAM_INT);
 if ($clone && $edit) {
     throw new invalid_parameter_exception('Cannot provide both clone and edit ids.');
 }
@@ -60,26 +61,8 @@ if ($clone) {
     $action = 'outageedit';
 } else {
     $config = outagelib::get_config();
-    $time = time();
-
-    $default = $config->default_time;
-    if ($default) {
-
-        // First try natural language parsing.
-        $time = strtotime($default);
-
-        // Lean on the Task API to convert the cron syntax to
-        // the next valid outage date and time.
-        $parts = explode(' ', $default);
-        if (count($parts) == 5) {
-            $task = new \core\task\calendar_cron_task();
-            $task->set_minute($parts[0]);
-            $task->set_hour($parts[1]);
-            $task->set_day($parts[2]);
-            $task->set_month($parts[3]);
-            $task->set_day_of_week($parts[4]);
-            $time = $task->get_next_scheduled_time();
-        }
+    if (empty($time)) {
+        $time = outagelib::get_next_window();
     }
 
     $outage = new outage([
diff --git a/views/manage.php b/views/manage.php
index 52c856c..f2fee40 100644
--- a/views/manage.php
+++ b/views/manage.php
@@ -27,6 +27,7 @@ use auth_outage\output\manage\history_table;
 use auth_outage\output\manage\planned_table;
 use auth_outage\output\renderer;
 use auth_outage\dml\outagedb;
+use auth_outage\local\outagelib;
 
 defined('MOODLE_INTERNAL') || die();
 
@@ -49,10 +50,23 @@ echo $viewbag['warning'];
         $table->finish_output();
         ?>
     <?php endif; ?>
-    <?php $outage = outagedb::get_ongoing(); ?>
-    <?php if (is_null($outage)): ?>
-        <?php echo $OUTPUT->single_button($urlnew, get_string('outagecreate', 'auth_outage')); ?>
-    <?php endif; ?>
+    <?php
+    $outage = outagedb::get_ongoing();
+    if (is_null($outage)) :
+        $config = outagelib::get_config();
+        $default = $config->default_time;
+        $max = $default ? 3 : 1;
+        $next = time();
+        for ($c = 0; $c < $max; $c++) {
+            echo '<p>';
+            $next = outagelib::get_next_window($next);
+            $urlnew->param('starttime', $next);
+            echo $OUTPUT->single_button($urlnew, get_string('outagecreate', 'auth_outage'));
+            if ($default) {
+                echo ' ' . userdate( $next, get_string('datetimeformat', 'auth_outage'));
+            }
+        }
+    endif; ?>
 </section>
 
 <section id="section_outage_history">