// todo: DRY with vbb tests

import tap from 'tap';

import isRoughlyEqual from 'is-roughly-equal';
import {DateTime} from 'luxon';
import flatMap from 'lodash/flatMap.js';

import {createWhen} from './lib/util.js';
import {createClient} from '../../index.js';
import {profile as bvgProfile} from '../../p/bvg/index.js';
import {createValidateFptfWith as createValidate} from './lib/validate-fptf-with.js';
import {createVbbBvgValidators} from './lib/vbb-bvg-validators.js';
import {testJourneysStationToStation} from './lib/journeys-station-to-station.js';
import {testJourneysStationToAddress} from './lib/journeys-station-to-address.js';
import {testJourneysStationToPoi} from './lib/journeys-station-to-poi.js';
import {testJourneysWalkingSpeed} from './lib/journeys-walking-speed.js';
import {testEarlierLaterJourneys} from './lib/earlier-later-journeys.js';
import {testLegCycleAlternatives} from './lib/leg-cycle-alternatives.js';
import {testRefreshJourney} from './lib/refresh-journey.js';
import {journeysFailsWithNoProduct} from './lib/journeys-fails-with-no-product.js';
import {testDepartures} from './lib/departures.js';
import {testDeparturesInDirection} from './lib/departures-in-direction.js';
import {testArrivals} from './lib/arrivals.js';
import {testJourneysWithDetour} from './lib/journeys-with-detour.js';
import {testReachableFrom} from './lib/reachable-from.js';
import {testRemarks} from './lib/remarks.js';
import {testLines} from './lib/lines.js';

const T_MOCK = 1731394800 * 1000; // 2024-11-12T08:00:00+01:00
const when = createWhen(bvgProfile.timezone, bvgProfile.locale, T_MOCK);

const {
	cfg,
	validateStation,
	validateJourneyLeg,
	validateDeparture,
	validateMovement,
} = createVbbBvgValidators({
	when,
});

const validate = createValidate(cfg, {
	station: validateStation,
	journeyLeg: validateJourneyLeg,
	departure: validateDeparture,
	movement: validateMovement,
});

const client = createClient(bvgProfile, 'public-transport/hafas-client:test');

const amrumerStr = '900009101';
const spichernstr = '900042101';
const bismarckstr = '900024201';
const westhafen = '900001201';
const wedding = '900009104';
const württembergallee = '900026153';
const tiergarten = '900003103';
const jannowitzbrücke = '900100004';

const hour = 60 * 60 * 1000;

tap.test('journeys – Spichernstr. to Bismarckstr.', async (t) => {
	const res = await client.journeys(spichernstr, bismarckstr, {
		results: 4,
		departure: when,
		stopovers: true,
	});

	await testJourneysStationToStation({
		test: t,
		res,
		validate,
		fromId: spichernstr,
		toId: bismarckstr,
	});
	// todo: find a journey where there ticket info is always available

	t.end();
});

tap.test('journeys – only subway', async (t) => {
	const res = await client.journeys(spichernstr, bismarckstr, {
		results: 20,
		departure: when,
		products: {
			suburban: false,
			subway: true,
			tram: false,
			bus: false,
			ferry: false,
			express: false,
			regional: false,
		},
	});

	validate(t, res, 'journeysResult', 'res');

	t.ok(res.journeys.length > 1);
	for (let i = 0; i < res.journeys.length; i++) {
		const journey = res.journeys[i];
		for (let j = 0; j < journey.legs.length; j++) {
			const leg = journey.legs[j];

			const name = `res.journeys[${i}].legs[${j}].line`;
			if (leg.line) {
				t.equal(leg.line.mode, 'train', name + '.mode is invalid');
				t.equal(leg.line.product, 'subway', name + '.product is invalid');
			}
			t.ok(journey.legs.some(l => l.line), name + '.legs has no subway leg');
		}
	}

	t.end();
});

tap.test('journeys – fails with no product', async (t) => {
	await journeysFailsWithNoProduct({
		test: t,
		fetchJourneys: client.journeys,
		fromId: spichernstr,
		toId: bismarckstr,
		when,
		products: bvgProfile.products,
	});
	t.end();
});

// BerlKönig for public use is suspended during COVID-19.
tap.skip('journeys – BerlKönig', async (t) => {
	const when = DateTime
		.fromMillis(Date.now(), {
			zone: 'Europe/Berlin',
			locale: 'de-De',
		})
		.startOf('day')
		.plus({days: 1, hours: 18})
		.toISO();

	const {journeys} = await client.journeys({
		type: 'location',
		address: '12101 Berlin-Tempelhof, Peter-Str.r-Weg 1',
		latitude: 52.476283,
		longitude: 13.384947,
	}, {
		type: 'location',
		id: '900981505',
		poi: true,
		name: 'Berlin, Tempelhofer Park Eingang Oderstr.',
		latitude: 52.476688,
		longitude: 13.41872,
	}, {
		berlkoenig: true,
		departure: when,
	});

	const withBerlkoenig = flatMap(journeys, j => j.legs)
		.find(l => l.line && l.line.product === 'berlkoenig');
	t.ok(withBerlkoenig, 'journey with BerlKönig not found');

	t.ok(withBerlkoenig.line);
	t.equal(withBerlkoenig.line.public, true);
	t.equal(withBerlkoenig.line.mode, 'taxi');
	t.equal(withBerlkoenig.line.product, 'berlkoenig');
	t.end();
});

// todo: opt.walkingSpeed doesn't seem to work right now
tap.skip('journeys: walkingSpeed', async (t) => {
	const havelchaussee = {
		type: 'location',
		address: 'Havelchaussee',
		latitude: 52.443576,
		longitude: 13.198973,
	};
	const wannsee = '900053301';

	await testJourneysWalkingSpeed({
		test: t,
		journeys: client.journeys,
		validate,
		from: havelchaussee,
		to: wannsee,
		products: {bus: false},
		minTimeDifference: 5 * 60 * 1000,
	});
});

tap.test('earlier/later journeys', async (t) => {
	await testEarlierLaterJourneys({
		test: t,
		fetchJourneys: client.journeys,
		validate,
		fromId: spichernstr,
		toId: bismarckstr,
		when,
	});

	t.end();
});

if (!process.env.VCR_MODE) {
	tap.test('journeys – leg cycle & alternatives', async (t) => {
		await testLegCycleAlternatives({
			test: t,
			fetchJourneys: client.journeys,
			fromId: tiergarten,
			toId: jannowitzbrücke,
		});
		t.end();
	});
}

tap.test('refreshJourney', async (t) => {
	await testRefreshJourney({
		test: t,
		fetchJourneys: client.journeys,
		refreshJourney: client.refreshJourney,
		validate,
		fromId: spichernstr,
		toId: bismarckstr,
		when,
	});
	t.end();
});

tap.test('trip details', async (t) => {
	const res = await client.journeys(spichernstr, amrumerStr, {
		results: 1, departure: when,
	});

	const p = res.journeys[0].legs.find(l => !l.walking);
	t.ok(p.tripId, 'precondition failed');
	t.ok(p.line.name, 'precondition failed');

	const tripRes = await client.trip(p.tripId, {when});

	validate(t, tripRes, 'tripResult', 'res');
	t.end();
});

tap.test('journeys – station to address', async (t) => {
	const torfstr = {
		type: 'location',
		address: '13353 Berlin-Wedding, Torfstraße 17',
		latitude: 52.541797,
		longitude: 13.350042,
	};
	const res = await client.journeys(spichernstr, torfstr, {
		results: 3,
		departure: when,
	});

	await testJourneysStationToAddress({
		test: t,
		res,
		validate,
		fromId: spichernstr,
		to: torfstr,
	});
	t.end();
});

tap.test('journeys – station to POI', async (t) => {
	const atze = {
		type: 'location',
		id: '900980720',
		poi: true,
		name: 'Berlin, Atze Musiktheater für Kinder',
		latitude: 52.543333,
		longitude: 13.351686,
	};
	const res = await client.journeys(spichernstr, atze, {
		results: 3,
		departure: when,
	});

	await testJourneysStationToPoi({
		test: t,
		res,
		validate,
		fromId: spichernstr,
		to: atze,
	});
	t.end();
});

tap.test('journeys: via works – with detour', async (t) => {
	// Going from Westhafen to Wedding via Württembergalle without detour
	// is currently impossible. We check if the routing engine computes a detour.
	const res = await client.journeys(westhafen, wedding, {
		via: württembergallee,
		results: 1,
		departure: when,
		stopovers: true,
	});

	await testJourneysWithDetour({
		test: t,
		res,
		validate,
		detourIds: [württembergallee],
	});
	t.end();
});

// todo: without detour test

tap.test('departures', async (t) => {
	const res = await client.departures(spichernstr, {
		duration: 5, when,
	});

	await testDepartures({
		test: t,
		res,
		validate,
		id: spichernstr,
	});
	t.end();
});

tap.test('departures with station object', async (t) => {
	const res = await client.departures({
		type: 'station',
		id: spichernstr,
		name: 'U Spichernstr',
		location: {
			type: 'location',
			latitude: 1.23,
			longitude: 2.34,
		},
	}, {when});

	validate(t, res, 'departuresResponse', 'res');
	t.end();
});

tap.test('departures at Spichernstr. in direction of Westhafen', async (t) => {
	await testDeparturesInDirection({
		test: t,
		fetchDepartures: client.departures,
		fetchTrip: client.trip,
		id: spichernstr,
		directionIds: [westhafen],
		when,
		validate,
	});
	t.end();
});

tap.test('departures at 7-digit station', async (t) => {
	const eisenach = '8010097'; // see derhuerst/vbb-hafas#22
	await client.departures(eisenach, {when});
	t.pass('did not fail');
	t.end();
});

tap.test('arrivals', async (t) => {
	const res = await client.arrivals(spichernstr, {
		duration: 5, when,
	});

	await testArrivals({
		test: t,
		res,
		validate,
		id: spichernstr,
	});
	t.end();
});

tap.test('nearby', async (t) => {
	const berlinerStr = '900044201';
	const landhausstr = '900043252';

	// Berliner Str./Bundesallee
	const nearby = await client.nearby({
		type: 'location',
		latitude: 52.4873452,
		longitude: 13.3310411,
	}, {
		// Even though HAFAS reports Landhausstr. to be 179m, we have to pass way more here. 🙄
		distance: 600,
	});

	validate(t, nearby, 'locations', 'nearby');

	t.equal(nearby[0].id, berlinerStr);
	t.equal(nearby[0].name, 'U Berliner Str. (Berlin)');
	t.ok(nearby[0].distance > 0);
	t.ok(nearby[0].distance < 100);

	const res = nearby.find(s => s.id === landhausstr);
	t.ok(res, `Landhausstr. ${landhausstr} is not among the nearby stops`);
	t.equal(nearby[1].name, 'Landhausstr. (Berlin)');
	t.ok(nearby[1].distance > 100);
	t.ok(nearby[1].distance < 200);

	t.end();
});

tap.test('locations', async (t) => {
	const locations = await client.locations('Alexanderplatz', {results: 20});

	validate(t, locations, 'locations', 'locations');
	t.ok(locations.length <= 20);

	t.ok(locations.find(s => s.type === 'stop' || s.type === 'station'));
	t.ok(locations.find(s => s.poi)); // POIs
	t.ok(locations.find(s => !s.name && s.address)); // addresses

	t.end();
});

tap.test('stop', async (t) => {
	const s = await client.stop(spichernstr);

	validate(t, s, ['stop', 'station'], 'stop');
	t.equal(s.id, spichernstr);

	t.end();
});

tap.test('radar', async (t) => {
	const res = await client.radar({
		north: 52.52411,
		west: 13.41002,
		south: 52.51942,
		east: 13.41709,
	}, {
		duration: 5 * 60, when,
	});

	validate(t, res, 'radarResult', 'res');
	t.end();
});

tap.test('reachableFrom', async (t) => {
	const torfstr17 = {
		type: 'location',
		address: '13353 Berlin-Wedding, Torfstr. 17',
		latitude: 52.541797,
		longitude: 13.350042,
	};

	await testReachableFrom({
		test: t,
		reachableFrom: client.reachableFrom,
		address: torfstr17,
		when,
		maxDuration: 15,
		validate,
	});
	t.end();
});

tap.test('remarks', async (t) => {
	await testRemarks({
		test: t,
		fetchRemarks: client.remarks,
		when,
		validate,
	});
	t.end();
});

tap.test('lines', async (t) => {
	await testLines({
		test: t,
		fetchLines: client.lines,
		validate,
		query: 'M10',
	});
	t.end();
});