'use strict'

const tap = require('tap')
const isRoughlyEqual = require('is-roughly-equal')

const {createWhen} = require('./lib/util')
const createClient = require('../..')
const nahshProfile = require('../../p/nahsh')
const products = require('../../p/nahsh/products')
const {
	line: createValidateLine,
	station: createValidateStation
} = require('./lib/validators')
const createValidate = require('./lib/validate-fptf-with')
const testJourneysStationToStation = require('./lib/journeys-station-to-station')
const testJourneysStationToAddress = require('./lib/journeys-station-to-address')
const testJourneysStationToPoi = require('./lib/journeys-station-to-poi')
const testEarlierLaterJourneys = require('./lib/earlier-later-journeys')
const testRefreshJourney = require('./lib/refresh-journey')
const journeysFailsWithNoProduct = require('./lib/journeys-fails-with-no-product')
const testDepartures = require('./lib/departures')
const testDeparturesInDirection = require('./lib/departures-in-direction')
const testArrivals = require('./lib/arrivals')
const testReachableFrom = require('./lib/reachable-from')

const when = createWhen('Europe/Berlin', 'de-DE')

const cfg = {
	when,
	stationCoordsOptional: false,
	products,
	maxLatitude: 55.15,
	minLongitude: 7.5,
	minLatitude: 53.15,
	maxLongitude: 11.6
}

const _validateLine = createValidateLine(cfg)
const validateLine = (validate, l, name) => {
	if (l && l.product === 'onCall') {
		// skip line validation
		// https://github.com/derhuerst/hafas-client/issues/8#issuecomment-355839965
		l = Object.assign({}, l)
		l.mode = 'taxi'
	}
	_validateLine(validate, l, name)
}

const validate = createValidate(cfg, {
	line: validateLine
})

const assertValidPrice = (t, p) => {
	t.ok(p)
	if (p.amount !== null) {
		t.equal(typeof p.amount, 'number')
		t.ok(p.amount > 0)
	}
	if (p.hint !== null) {
		t.equal(typeof p.hint, 'string')
		t.ok(p.hint)
	}
}

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

const kielHbf = '9049079'
const flensburg = '9027253'
const luebeckHbf = '9057819'
const husum = '9044660'
const schleswig = '9081683'
const ellerbekerMarkt = '9049027'
const seefischmarkt = '9049245'
const kielRaeucherei = '9049217'

tap.test('journeys – Kiel Hbf to Flensburg', async (t) => {
	const res = await client.journeys(kielHbf, flensburg, {
		results: 4,
		departure: when,
		stopovers: true
	})

	const kaistr = '9049113'
	await testJourneysStationToStation({
		test: t,
		res,
		validate,
		fromIds: [kielHbf, kaistr],
		toId: flensburg
	})

	for (let i = 0; i < res.journeys.length; i++) {
		const j = res.journeys[i]
		// todo: find a journey where there pricing info is always available
		if (j.price) assertValidPrice(t, j.price, `res.journeys[${i}].price`)
	}

	t.end()
})

// todo: journeys, only one product

tap.test('journeys – fails with no product', (t) => {
	journeysFailsWithNoProduct({
		test: t,
		fetchJourneys: client.journeys,
		fromId: kielHbf,
		toId: flensburg,
		when,
		products
	})
	t.end()
})

tap.test('Kiel Hbf to Berliner Str. 80, Husum', async (t) => {
	const berlinerStr = {
		type: 'location',
		address: 'Husum, Berliner Straße 80',
		latitude: 54.488995,
		longitude: 9.056263
	}
	const res = await client.journeys(kielHbf, berlinerStr, {
		results: 3,
		departure: when
	})

	await testJourneysStationToAddress({
		test: t,
		res,
		validate,
		fromId: kielHbf,
		to: berlinerStr
	})
	t.end()
})

tap.test('Kiel Hbf to Holstentor', async (t) => {
	const holstentor = {
		type: 'location',
		id: '970003168',
		poi: true,
		name: 'Hansestadt Lübeck, Holstentor (Denkmal)',
		latitude: 53.866321,
		longitude: 10.679976
	}
	const res = await client.journeys(kielHbf, holstentor, {
		results: 3,
		departure: when
	})

	await testJourneysStationToPoi({
		test: t,
		res,
		validate,
		fromId: kielHbf,
		to: holstentor
	})
	t.end()
})

tap.test('Husum to Lübeck Hbf with stopover at Kiel Hbf', async (t) => {
	const res = await client.journeys(husum, luebeckHbf, {
		via: kielHbf,
		results: 1,
		departure: when,
		stopovers: true
	})

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

	const leg = res.journeys[0].legs.some((leg) => {
		return leg.stopovers && leg.stopovers.some((stopover) => {
			const s = stopover.stop
			return s.station && s.station.id === kielHbf || s.id === kielHbf
		})
	})
	t.ok(leg, 'Kiel Hbf is not being passed')

	t.end()
})

tap.test('earlier/later journeys, Kiel Hbf -> Flensburg', async (t) => {
	await testEarlierLaterJourneys({
		test: t,
		fetchJourneys: client.journeys,
		validate,
		fromId: kielHbf,
		toId: flensburg,
		when
	})

	t.end()
})

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

// todo: with detour test
// todo: without detour test

tap.test('trip details', async (t) => {
	const res = await client.journeys(flensburg, husum, {
		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 trip = await client.trip(p.tripId, p.line.name, {when})

	validate(t, trip, 'trip', 'trip')
	t.end()
})

tap.test('departures at Kiel Räucherei', async (t) => {
	const departures = await client.departures(kielRaeucherei, {
		duration: 30, when,
	})

	await testDepartures({
		test: t,
		departures,
		validate,
		id: kielRaeucherei
	})
	t.end()
})

tap.test('departures with station object', async (t) => {
	const deps = await client.departures({
		type: 'station',
		id: kielHbf,
		name: 'Kiel Hbf',
		location: {
			type: 'location',
			latitude: 1.23,
			longitude: 2.34
		}
	}, {when})

	validate(t, deps, 'departures', 'departures')
	t.end()
})

tap.test('departures at Berlin Hbf in direction of Berlin Ostbahnhof', async (t) => {
	await testDeparturesInDirection({
		test: t,
		fetchDepartures: client.departures,
		fetchTrip: client.trip,
		id: ellerbekerMarkt,
		directionIds: [seefischmarkt, '710102'],
		when,
		validate
	})
	t.end()
})

tap.test('arrivals at Kiel Räucherei', async (t) => {
	const arrivals = await client.arrivals(kielRaeucherei, {
		duration: 30, when
	})

	await testArrivals({
		test: t,
		arrivals,
		validate,
		id: kielRaeucherei
	})
	t.end()
})

tap.test('nearby Kiel Hbf', async (t) => {
	const kielHbfPosition = {
		type: 'location',
		latitude: 54.314982,
		longitude: 10.131976
	}
	const nearby = await client.nearby(kielHbfPosition, {
		results: 2, distance: 400
	})

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

	t.ok(Array.isArray(nearby))
	t.equal(nearby.length, 2)

	t.ok(nearby[0].id === kielHbf || nearby[0].id === '8000199')
	t.equal(nearby[0].name, 'Kiel Hbf')
	t.ok(nearby[0].distance >= 0)
	t.ok(nearby[0].distance <= 100)

	t.end()
})

tap.test('locations named "Kiel Rathaus"', async (t) => {
	const kielRathaus = '9049200'
	const locations = await client.locations('Kiel Rathaus', {
		results: 15
	})

	validate(t, locations, 'locations', 'locations')
	t.ok(locations.length <= 15)

	t.ok(locations.find(l => l.type === 'stop' || l.type === 'station'))
	t.ok(locations.find(l => l.poi)) // POIs
	t.ok(locations.some(l => l.station && l.station.id === kielRathaus || l.id === kielRathaus))

	t.end()
})

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

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

	t.end()
})

tap.test('radar', async (t) => {
	const vehicles = await client.radar({
		north: 54.4,
		west: 10.0,
		south: 54.2,
		east: 10.2
	}, {
		duration: 5 * 60, when
	})

	// todo: cfg.stationProductsOptional option
	const allProducts = products.reduce((acc, p) => (acc[p.id] = true, acc), {})
	const validateStation = createValidateStation(cfg)
	const validate = createValidate(cfg, {
		station: (validate, s, name) => {
			s = Object.assign({
				products: allProducts // todo: fix station.products
			}, s)
			if (!s.name) s.name = 'foo' // todo, see #34
			validateStation(validate, s, name)
		}
	})
	validate(t, vehicles, 'movements', 'vehicles')

	t.end()
})

tap.test('reachableFrom', async (t) => {
	const berlinerStr = {
		type: 'location',
		address: 'Husum, Berliner Straße 80',
		latitude: 54.488995,
		longitude: 9.056263
	}

	await testReachableFrom({
		test: t,
		reachableFrom: client.reachableFrom,
		address: berlinerStr,
		when,
		maxDuration: 60,
		validate
	})
	t.end()
})
