WIP: driftkveld i kalenderen

src/pvv/side/social/driftkveldactivity.php

@@ -0,0 +1,36 @@
+<?php //declare(strict_types=1);
+namespace pvv\side\social;
+
+use \pvv\side\Activity;
+use \DateTimeImmutable;
+use \DateInterval;
+
+class DriftkveldActivity implements Activity {
+
+	public function nextDate(DateTimeImmutable $date) {
+		if ($date->format('H') > 18 || $date->format('H') == 17 && $date->format('i') > 30)
+			return $this->nextDate($date->add(new DateInterval('P1D'))->setTime(18, 15, 0));
+		$date = $date->setTime(18, 15, 0);
+		if ($date->format('N') != 2)
+			return $this->nextDate($date->add(new DateInterval('P1D')));
+		return $date;
+	}
+
+	public function prevDate(DateTimeImmutable $date) {
+		if ($date->format('H') < 17 || $date->format('H') == 18 && $date->format('i') < 30)
+			return $this->prevDate($date->sub(new DateInterval('P1D'))->setTime(18, 15, 0));
+		$date = $date->setTime(18, 15, 0);
+		if ($date->format('N') != 2)
+			return $this->prevDate($date->sub(new DateInterval('P1D')));
+		return $date;
+	}
+
+	public function getNextEventFrom(DateTimeImmutable $date) /* : Event */ {
+		return new DriftkveldEvent($this->nextDate($date));
+	}
+
+	public function getPreviousEventFrom(DateTimeImmutable $date) /* : Event */ {
+		return new DriftkveldEvent($this->prevDate($date));
+	}
+
+}