From: gregor herrmann <gregor@toastfreeware.priv.at>
Date: Thu, 2 Aug 2018 11:11:43 +0000 (+0200)
Subject: do some horribly wrong timezone magic
X-Git-Url: https://git.toastfreeware.priv.at/chrisu/seepark.git/commitdiff_plain/ebe2bb2492812aea5d73facd2a87cfb66e04ee3d

do some horribly wrong timezone magic
---

diff --git a/web/static/seepark_web.js b/web/static/seepark_web.js
index 1390cd7..e663296 100644
--- a/web/static/seepark_web.js
+++ b/web/static/seepark_web.js
@@ -125,8 +125,13 @@ function loaddays(days) {
 
 function beginend(days) {
 	var now = Date.now();
-	var end = new Date(now).toISOString().substr(0, 19); // 2018-06-13T16:52:30.995Z
-	var begin = new Date(now - days * 60*60*24 * 1000).toISOString().substr(0, 19);
+
+	// TODO: this timezone calculation relies on the browser being in Europe/Vienna
+	var refdate = new Date(now);
+	var offset = refdate.getTimezoneOffset(); // -120 for UTC+2
+
+	var end = new Date(now - offset * 60 * 1000).toISOString().substr(0, 19); // 2018-06-13T16:52:30.995Z
+	var begin = new Date(now - days * 60*60*24 * 1000 - offset * 60 * 1000).toISOString().substr(0, 19);
 	return '&begin=' + begin + '&end=' + end;
 }