1 files changed, 99 insertions, 0 deletions
diff --git a/public/static/js/geostop.js b/public/static/js/geostop.js
new file mode 100644
index 0000000..69bb607
--- /dev/null
+++ b/public/static/js/geostop.js
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2020 Birte Kristina Friesel
+ *
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+$(function() {
+	const removeStatus = function() {
+		$('div.candidatestatus').remove();
+	};
+	const showError = function(header, message, code) {
+		const errnode = $(document.createElement('div'));
+		errnode.attr('class', 'error');
+		errnode.text(message);
+
+		const headnode = $(document.createElement('strong'));
+		headnode.text(header);
+		errnode.prepend(headnode);
+
+		if (code) {
+			const shortnode = $(document.createElement('div'));
+			shortnode.attr('class', 'errcode');
+			shortnode.text(code);
+			errnode.append(shortnode);
+		}
+
+		$('div.candidatelist').append(errnode);
+	};
+
+	const processResult = function(data) {
+		removeStatus();
+		if (data.error) {
+			showError('Backend-Fehler:', data.error, null);
+		} else if (data.candidates.length == 0) {
+			showError('Keine Stationen in 70km Umkreis gefunden', '', null);
+		} else {
+			$.each(data.candidates, function(i, candidate) {
+
+				const eva = candidate.eva,
+					name = candidate.name,
+					distance = candidate.distance.toFixed(1),
+					efa = candidate.efa,
+					hafas = candidate.hafas;
+
+				const stationlink = $(document.createElement('a'));
+				if (efa) {
+					stationlink.attr('href', eva + '?efa=' + efa);
+				} else if (hafas) {
+					stationlink.attr('href', eva + '?hafas=' + hafas);
+				} else {
+					stationlink.attr('href', eva);
+				}
+				stationlink.text(name + ' ');
+
+				const distancenode = $(document.createElement('div'));
+				distancenode.attr('class', 'distance');
+				distancenode.text(distance);
+
+				const icon = $(document.createElement('i'));
+				icon.attr('class', 'material-icons');
+				icon.text((hafas || efa) ? 'directions' : 'train');
+
+				stationlink.append(icon);
+				stationlink.append(distancenode);
+				$('div.candidatelist').append(stationlink);
+			});
+		}
+	};
+
+	const processLocation = function(loc) {
+		const param = new URLSearchParams(window.location.search);
+		$.post('/_geolocation', {lon: loc.coords.longitude, lat: loc.coords.latitude, efa: param.get('efa'), hafas: param.get('hafas')}, processResult).fail(function(jqXHR, textStatus, errorThrown) {
+			removeStatus();
+			showError("Netzwerkfehler: ", textStatus, errorThrown);
+		});
+		$('div.candidatestatus').text('Suche Stationen…');
+	};
+
+	const 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);
+	}
+});