From 6fd985ae7ef9800d5837af942d74ad6e7562c75d Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Sun, 7 Oct 2018 11:35:47 +0200
Subject: show close stations via geolocation

---
 public/static/js/geolocation.js | 55 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 public/static/js/geolocation.js

(limited to 'public')

diff --git a/public/static/js/geolocation.js b/public/static/js/geolocation.js
new file mode 100644
index 0000000..1c881e2
--- /dev/null
+++ b/public/static/js/geolocation.js
@@ -0,0 +1,55 @@
+$(document).ready(function() {
+	var prePlaceholder = $('p.geolocationhint');
+	var placeholder = $('div.geolocation div.progress');
+	var showError = function(header, message, code) {
+		prePlaceholder.remove();
+		placeholder.remove();
+	};
+
+	var processResult = function(data) {
+		if (data.error) {
+			showError('Backend-Fehler:', data.error, null);
+		} else if (data.candidates.length == 0) {
+			showError('Keine Bahnhöfe in 70km Umkreis gefunden', '', null);
+		} else {
+			resultTable = $('<table><tbody></tbody></table>')
+			resultBody = resultTable.children();
+			$.each(data.candidates, function(i, candidate) {
+
+				var ds100 = candidate.ds100,
+					name = candidate.name,
+					distance = candidate.distance;
+				distance = distance.toFixed(1);
+
+				var stationlink = $(document.createElement('a'));
+				stationlink.attr('href', ds100);
+				stationlink.text(name);
+
+				resultBody.append('<tr><td><a href="/' + ds100 + '">' + name + '</a></td></tr>');
+			});
+			placeholder.replaceWith(resultTable);
+		}
+	};
+
+	var processLocation = function(loc) {
+		$.post('/x/geolocation', {lon: loc.coords.longitude, lat: loc.coords.latitude}, processResult);
+	};
+
+	var processError = function(error) {
+		if (error.code == error.PERMISSION_DENIED) {
+			showError('Standortanfrage nicht möglich.', 'Vermutlich fehlen die Rechte im Browser oder der Android Location Service ist deaktiviert.', 'geolocation.error.PERMISSION_DENIED');
+		} else if (error.code == error.POSITION_UNAVAILABLE) {
+			showError('Standort konnte nicht ermittelt werden', '(Service nicht verfügbar)', 'geolocation.error.POSITION_UNAVAILABLE');
+		} else if (error.code == error.TIMEOUT) {
+			showError('Standort konnte nicht ermittelt werden', '(Timeout)', 'geolocation.error.TIMEOUT');
+		} else {
+			showError('Standort konnte nicht ermittelt werden', '(unbekannter Fehler)', 'unknown geolocation.error code');
+		}
+	};
+
+	if (navigator.geolocation) {
+		navigator.geolocation.getCurrentPosition(processLocation, processError);
+	} else {
+		showError('Standortanfragen werden von diesem Browser nicht unterstützt', '', null);
+	}
+});
-- 
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