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-rw-r--r--public/static/js/geotrain.js84
1 files changed, 84 insertions, 0 deletions
diff --git a/public/static/js/geotrain.js b/public/static/js/geotrain.js
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+/*
+ * Copyright (C) 2020 Daniel Friesel
+ *
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+$(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.trains.length == 0) {
+ showError('Keine Bahnstrecke gefunden', '', null);
+ } else {
+ $.each(data.trains, function(i, train) {
+
+ const prev = train.stops[0][1]
+ const prev_time = train.stops[0][2]
+ const next_eva = train.stops[1][0]
+ const next = train.stops[1][1]
+ const next_time = train.stops[1][2]
+
+ var stationlink = $(document.createElement('a'));
+ stationlink.attr('href', '/z/' + train.train + '/' + next_eva);
+ stationlink.text(train.line);
+
+ var distancenode = $(document.createElement('div'));
+ distancenode.attr('class', 'traininfo');
+ distancenode.html(prev_time + ' ' + prev + '<br/>' + next_time + ' ' + next);
+
+ stationlink.append(distancenode);
+ $('div.candidatelist').append(stationlink);
+ });
+ }
+ };
+
+ var processLocation = function(loc) {
+ $.get('https://dbf.finalrewind.org/__geotrain/search', {lon: loc.coords.longitude, lat: loc.coords.latitude}, processResult);
+ $('div.candidatestatus').text('Suche Züge…');
+ };
+
+ 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);
+ }
+});