@public-transport/hafas-rest-client/lib/parse/location.js

Client for HAFAS rest.exe public transport APIs.

'use strict'

const { parse } = require('qs')

const leadingZeros = /^0+/

const parseNr = nr => parseFloat(nr.slice(0, 2) + '.' + nr.slice(2))

const parseLocation = (ctx, l) => {
	const { profile, opt } = ctx

	const id = parse(l.id, { delimiter: '@' })
	const latitude = typeof l.lat === 'number'
		? l.lat
		: (id.Y ? parseNr(id.Y) : null)
	const longitude = typeof l.lon === 'number'
		? l.lon
		: (id.X ? parseNr(id.X) : null)

	const res = {
		type: 'location',
		id: (l.extId || id.L || id.b || '').replace(leadingZeros, '') || null,
		latitude,
		longitude,
	}

	// todo: l.notes https://github.com/public-transport/hafas-client/issues/130

	if (l.type === 'S' || l.type === 'ST' || id.A === '1') {
		const stop = {
			type: 'stop',
			id: res.id,
			name: l.name || id.O ? profile.parseStationName(ctx, l.name || id.O) : null,
			location: typeof res.latitude === 'number' ? res : null,
		}

		if (opt.linesOfStops && Array.isArray(l.productAtStop)) {
			stop.lines = l.productAtStop.map(p => profile.parseLine(ctx, {
				...p, prodCtx: { ...p, ...p.prodCtx },
			}))
		}

		if (l.hasMainMast) {
			stop.station = parseLocation(ctx, {
				type: 'ST',
				id: l.mainMastId,
				extId: l.mainMastExtId,
			})
			stop.station.type = 'station'
		}

		return stop
	}

	if (l.type === 'A' || l.type === 'ADR') res.address = l.name
	else res.name = l.name
	if (l.type === 'P') res.poi = true

	return res
}

module.exports = parseLocation