fix dbnav time zone bug

p/dbnav/index.js

@@ -8,6 +8,7 @@ import {formatStopReq} from './stop-req.js';
 import {formatNearbyReq} from './nearby-req.js';
 import {formatStationBoardReq} from './station-board-req.js';
 import {parseStop} from './parse-stop.js';
+import {parseJourney} from './parse-journey.js';
 
 const profile = {
 	...baseProfile,
@@ -24,6 +25,7 @@ const profile = {
 	formatStationBoardReq,
 	formatLocationFilter,
 
+	parseJourney,
 	parseStop,
 };
 

p/dbnav/parse-journey.js

@@ -0,0 +1,34 @@
+import {parseJourney as parseJourneyDefault} from '../../parse/journey.js';
+
+const parseJourney = (ctx, jj) => {
+	const legs = (jj.verbindung || jj).verbindungsAbschnitte;
+	if (legs.length > 0) {
+		legs[0] = preprocessJourneyLeg(legs[0]);
+	}
+	if (legs.length > 1) {
+		legs[legs.length - 1] = preprocessJourneyLeg(legs.at(-1));
+	}
+
+	return parseJourneyDefault(ctx, jj);
+};
+
+const preprocessJourneyLeg = (pt) => { // fixes https://github.com/public-transport/db-vendo-client/issues/24
+	if (pt.typ === 'FUSSWEG' || pt.typ === 'TRANSFER') {
+		pt.ezAbgangsDatum = correctRealtimeTimeZone(pt.abgangsDatum, pt.ezAbgangsDatum);
+		pt.ezAnkunftsDatum = correctRealtimeTimeZone(pt.ankunftsDatum, pt.ezAnkunftsDatum);
+	}
+
+	return pt;
+};
+
+const correctRealtimeTimeZone = (planned, realtime) => {
+	if (planned && realtime) {
+		const timeZoneOffsetRegex = /([+-]\d\d:\d\d|Z)$/;
+		const timeZoneOffsetPlanned = timeZoneOffsetRegex.exec(planned)[0];
+		return realtime.replace(timeZoneOffsetRegex, timeZoneOffsetPlanned);
+	}
+
+	return realtime;
+};
+
+export {parseJourney};