implement copying of Stations for Seminary copy feature

www/analytics/core/ScheduledTime/Weekly.php

@@ -0,0 +1,83 @@
+<?php
+/**
+ * Piwik - Open source web analytics
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik\ScheduledTime;
+
+use Exception;
+use Piwik\ScheduledTime;
+
+/**
+ * Weekly class is used to schedule tasks every week.
+ *
+ * @see ScheduledTask
+ *
+ */
+class Weekly extends ScheduledTime
+{
+    /**
+     * @see ScheduledTime::getRescheduledTime
+     * @return int
+     */
+    public function getRescheduledTime()
+    {
+        $currentTime = $this->getTime();
+
+        $daysFromNow = 7;
+
+        // Adjusts the scheduled day
+        if ($this->day !== null) {
+            $daysFromNow = ($this->day - date('N', $currentTime) + 7) % 7;
+
+            if ($daysFromNow == 0) {
+                $daysFromNow = 7;
+            }
+        }
+
+        // Adds correct number of days
+        $rescheduledTime = mktime(date('H', $currentTime),
+            date('i', $currentTime),
+            date('s', $currentTime),
+            date('n', $currentTime),
+            date('j', $currentTime) + $daysFromNow,
+            date('Y', $currentTime)
+        );
+ 
+        // Adjusts the scheduled hour
+        $rescheduledTime = $this->adjustHour($rescheduledTime);
+        $rescheduledTime = $this->adjustTimezone($rescheduledTime);
+
+        return $rescheduledTime;
+    }
+
+    /**
+     * @param int $day the day to set, has to be >= 1 and < 8
+     * @throws Exception if parameter _day is invalid
+     */
+    public function setDay($day)
+    {
+        if (!is_int($day)) {
+            $day = self::getDayIntFromString($day);
+        }
+
+        if (!($day >= 1 && $day < 8)) {
+            throw new Exception ("Invalid day parameter, must be >=1 and < 8");
+        }
+
+        $this->day = $day;
+    }
+
+    public static function getDayIntFromString($dayString)
+    {
+        $time = strtotime($dayString);
+        if ($time === false) {
+            throw new Exception("Invalid day string '$dayString'. Must be 'monday', 'tuesday', etc.");
+        }
+
+        return date("N", $time);
+    }
+}