1 files changed, 77 insertions, 0 deletions
diff --git a/public/static/js/geolocation.js b/public/static/js/geolocation.js
new file mode 100644
index 0000000..06537c4
--- /dev/null
+++ b/public/static/js/geolocation.js
@@ -0,0 +1,77 @@
+$(function() {
+	var removeStatus = function() {
+		$('div.candidatestatus').remove();
+	};
+	var showError = function(header, message, code) {
+		var errnode = $(document.createElement('div'));
+		errnode.attr('class', 'error');
+		errnode.text(message);
+
+		var headnode = $(document.createElement('strong'));
+		headnode.text(header);
+		errnode.prepend(headnode);
+
+		if (code) {
+			var shortnode = $(document.createElement('div'));
+			shortnode.attr('class', 'errcode');
+			shortnode.text(code);
+			errnode.append(shortnode);
+		}
+
+		$('div.candidatelist').append(errnode);
+	};
+
+	var processResult = function(data) {
+		removeStatus();
+		if (data.error) {
+			showError('Backend-Fehler:', data.error, null);
+		} else if (data.candidates.length == 0) {
+			showError('Keine Bahnhöfe in 70km Umkreis gefunden', '', null);
+		} else {
+			$.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);
+
+				var distancenode = $(document.createElement('div'));
+				distancenode.attr('class', 'distance');
+				distancenode.text(distance);
+
+				stationlink.append(distancenode);
+				$('div.candidatelist').append(stationlink);
+			});
+		}
+	};
+
+	var processLocation = function(loc) {
+		$.post('/_geolocation', {lon: loc.coords.longitude, lat: loc.coords.latitude}, processResult);
+		$('div.candidatestatus').text('Suche Bahnhöfe…');
+	};
+
+	var processError = function(error) {
+		removeStatus();
+		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);
+		$('div.candidatestatus').text('Position wird bestimmt…');
+	} else {
+		removeStatus();
+		showError('Standortanfragen werden von diesem Browser nicht unterstützt', '', null);
+	}
+});