'use strict'

const tapePromise = require('tape-promise').default
const tape = require('tape')
const isRoughlyEqual = require('is-roughly-equal')
const validateLine = require('validate-fptf/line')

const {createWhen} = require('./lib/util')
const co = require('./lib/co')
const createClient = require('..')
const oebbProfile = require('../p/oebb')
const products = require('../p/oebb/products')
const {
	station: createValidateStation,
	stop: validateStop
} = 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 testJourneysWithDetour = require('./lib/journeys-with-detour')
const testDeparturesInDirection = require('./lib/departures-in-direction')

const when = createWhen('Europe/Vienna', 'de-AT')

const cfg = {
	when,
	stationCoordsOptional: false,
	products
}

// todo validateDirection: search list of stations for direction

const validate = createValidate(cfg, {
	line: validateLine // bypass line validator in lib/validators
})

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 test = tapePromise(tape)
const client = createClient(oebbProfile, 'public-transport/hafas-client:test')

const salzburgHbf = '8100002'
const wienFickeystr = '911014'
const wien = '1190100'
const wienWestbahnhof = '1291501'
const klagenfurtHbf = '8100085'
const muenchenHbf = '8000261'
const wienRenngasse = '1390186'
const wienKarlsplatz = '1390461'
const wienPilgramgasse = '1390562'

test.skip('journeys – Salzburg Hbf to Wien Westbahnhof', co(function* (t) {
	const journeys = yield client.journeys(salzburgHbf, wienFickeystr, {
		results: 3,
		departure: when,
		stopovers: true
	})

	yield testJourneysStationToStation({
		test: t,
		journeys,
		validate,
		fromId: salzburgHbf,
		toId: wienFickeystr
	})

	for (let i = 0; i < journeys.length; i++) {
		const j = journeys[i]
		if (j.price) assertValidPrice(t, j.price, `journeys[${i}].price`)
	}

	t.end()
}))

// todo: journeys, only one product

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

test('Salzburg Hbf to 1220 Wien, Wagramer Straße 5', co(function* (t) {
	const wagramerStr = {
		type: 'location',
    	address: '1220 Wien, Wagramer Straße 5',
    	latitude: 48.236216,
    	longitude: 16.425863
	}
	const journeys = yield client.journeys(salzburgHbf, wagramerStr, {
		results: 3,
		departure: when
	})

	yield testJourneysStationToAddress({
		test: t,
		journeys,
		validate,
		fromId: salzburgHbf,
		to: wagramerStr
	})
	t.end()
}))

test('Salzburg Hbf to Albertina', co(function* (t) {
	const albertina = {
		type: 'location',
    	id: '975900003',
    	name: 'Albertina',
    	latitude: 48.204699,
    	longitude: 16.368404
	}
	const journeys = yield client.journeys(salzburgHbf, albertina, {
		results: 3, departure: when
	})

	yield testJourneysStationToPoi({
		test: t,
		journeys,
		validate,
		fromId: salzburgHbf,
		to: albertina
	})
	t.end()
}))

test('journeys: via works – with detour', co(function* (t) {
	// Going from Stephansplatz to Schottenring via Donauinsel without detour
	// is currently impossible. We check if the routing engine computes a detour.
	const stephansplatz = '001390167'
	const schottenring = '001390163'
	const donauinsel = '001392277'
	const donauinselPassed = '922001'
	const journeys = yield client.journeys(stephansplatz, schottenring, {
		via: donauinsel,
		results: 1,
		departure: when,
		stopovers: true
	})

	yield testJourneysWithDetour({
		test: t,
		journeys,
		validate,
		detourIds: [donauinsel, donauinselPassed]
	})
	t.end()
}))

test('journeys: via works – without detour', co(function* (t) {
	// When going from Karlsplatz to Praterstern via Museumsquartier, there is
	// *no need* to change trains / no need for a "detour".
	const karlsplatz = '001390461'
	const praterstern = '001290201'
	const museumsquartier = '001390171'
	const museumsquartierPassed = '901014'

	const journeys = yield client.journeys(karlsplatz, praterstern, {
		via: museumsquartier,
		results: 1,
		departure: when,
		stopovers: true
	})

	validate(t, journeys, 'journeys', 'journeys')

	const l1 = journeys[0].legs.some((leg) => {
		return (
			leg.destination.id === museumsquartier ||
			leg.destination.id === museumsquartierPassed
		)
	})
	t.notOk(l1, 'transfer at Museumsquartier')

	const l2 = journeys[0].legs.some((leg) => {
		return leg.stopovers && leg.stopovers.some((stopover) => {
			return stopover.stop.id === museumsquartierPassed
		})
	})
	t.ok(l2, 'Museumsquartier is not being passed')

	t.end()
}))

test('earlier/later journeys, Salzburg Hbf -> Wien Westbahnhof', co(function* (t) {
	yield testEarlierLaterJourneys({
		test: t,
		fetchJourneys: client.journeys,
		validate,
		fromId: salzburgHbf,
		toId: wienWestbahnhof,
		when
	})

	t.end()
}))

test('refreshJourney', co(function* (t) {
	yield testRefreshJourney({
		test: t,
		fetchJourneys: client.journeys,
		refreshJourney: client.refreshJourney,
		validate,
		fromId: salzburgHbf,
		toId: wienWestbahnhof,
		when
	})
	t.end()
}))

test('trip details', co(function* (t) {
	const journeys = yield client.journeys(wienWestbahnhof, muenchenHbf, {
		results: 1, departure: when
	})

	const p = journeys[0].legs[0]
	t.ok(p.id, 'precondition failed')
	t.ok(p.line.name, 'precondition failed')
	const trip = yield client.trip(p.id, p.line.name, {when})

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

test('departures at Wien Leibenfrostgasse', co(function* (t) {
	const wienLeibenfrostgasse = '1390469'
	const ids = [
		wienLeibenfrostgasse, // station
		'904029', // stop "Wien Leibenfrostgasse (Phorusgasse)s"
		'904030' // stop "Wien Leibenfrostgasse (Ziegelofengasse)"
	]

	const deps = yield client.departures(wienLeibenfrostgasse, {
		duration: 15, when
	})

	validate(t, deps, 'departures', 'departures')
	t.ok(deps.length > 0, 'must be >0 departures')
	// todo: move into deps validator
	t.deepEqual(deps, deps.sort((a, b) => t.when > b.when))

	for (let i = 0; i < deps.length; i++) {
		const dep = deps[i]
		t.ok(ids.includes(dep.stop.id), `deps[${i}].stop.id ("${dep.stop.id}") is invalid`)
	}

	t.end()
}))

test('departures with station object', co(function* (t) {
	const deps = yield client.departures({
		type: 'station',
		id: salzburgHbf,
		name: 'Salzburg Hbf',
		location: {
			type: 'location',
			latitude: 1.23,
			longitude: 2.34
		}
	}, {when})

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

test('departures at Karlsplatz in direction of Pilgramgasse', co(function* (t) {
	yield testDeparturesInDirection({
		test: t,
		fetchDepartures: client.departures,
		fetchTrip: client.trip,
		id: wienKarlsplatz,
		directionIds: [wienPilgramgasse, '905002'],
		when,
		validate
	})
	t.end()
}))

// todo: arrivals

test('nearby Salzburg Hbf', co(function* (t) {
	const nearby = yield client.nearby({
		type: 'location',
		longitude: 13.045604,
		latitude: 47.812851
	}, {
		results: 5, distance: 400
	})

	validate(t, nearby, 'locations', 'nearby')
	t.equal(nearby.length, 5)

	const s = nearby[0]
	t.ok(s.id === '008100002' || s.id === '8100002', 'id should be 8100002')
	t.equal(s.name, 'Salzburg Hbf')
	t.ok(isRoughlyEqual(.0005, s.location.latitude, 47.812851))
	t.ok(isRoughlyEqual(.0005, s.location.longitude, 13.045604))
	t.ok(s.distance >= 0)
	t.ok(s.distance <= 100)

	t.end()
}))

test('locations named Salzburg', co(function* (t) {
	const locations = yield client.locations('Salzburg', {
		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.id && s.name)) // POIs
	t.ok(locations.some((s) => {
		// todo: trim IDs
		if (s.station) {
			if (s.station.id === '008100002' || s.station.id === '8100002') return true
		}
		return s.id === '008100002' || s.id === '8100002'
	}))

	t.end()
}))

test('station', co(function* (t) {
	const loc = yield client.station(wienRenngasse)

	// todo: find a way to always get products from the API
	// todo: cfg.stationProductsOptional option
	const allProducts = products.reduce((acc, p) => (acc[p.id] = true, acc), {})
	const validateStation = createValidateStation(cfg)
	const validate = createValidate(cfg, {
		stop: (validate, s, name) => {
			const withFakeProducts = Object.assign({products: allProducts}, s)
			validateStop(validate, withFakeProducts, name)
		},
		station: (validate, s, name) => {
			const withFakeProducts = Object.assign({products: allProducts}, s)
			validateStation(validate, withFakeProducts, name)
		}
	})
	validate(t, loc, ['stop', 'station'], 'station')

	t.equal(loc.id, wienRenngasse)

	t.end()
}))

test('radar Salzburg', co(function* (t) {
	let vehicles = yield client.radar({
		north: 47.827203,
		west: 13.001261,
		south: 47.773278,
		east: 13.07562
	}, {
		duration: 5 * 60, when
	})

	// todo: find a way to always get frames from the API
	vehicles = vehicles.filter(m => m.frames && m.frames.length > 0)

	// todo: find a way to always get products from the API
	// 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) => {
			const withFakeProducts = Object.assign({products: allProducts}, s)
			validateStation(validate, withFakeProducts, name)
		},
		line: validateLine
	})
	validate(t, vehicles, 'movements', 'vehicles')

	t.end()
}))