84 lines
1.9 KiB
JavaScript
84 lines
1.9 KiB
JavaScript
'use strict'
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const time = require('parse-messy-time')
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const parse = require('cli-native').to
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const hafas = require('db-hafas')
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const err400 = (msg) => {
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const err = new Error(msg)
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err.statusCode = 400
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return err
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}
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const location = (q, t) => {
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if (q[t]) return q[t] // station id
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else if (q[t + '.latitude'] && q[t + '.longitude']) {
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const l = {
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type: 'address',
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name: 'foo bar', // todo
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latitude: +q[t + `.latitude`],
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longitude: +q[t + `.longitude`]
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}
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if (q[t + '.name']) l.name = q[t + '.name']
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if (q[t + '.id']) {
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l.type = 'poi'
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l.id = q[t + '.id']
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}
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return l
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}
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else return null
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}
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const isNumber = /^\d+$/
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const journeys = (req, res, next) => {
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const from = location(req.query, 'from')
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if (!from) return next(err400('Missing origin.'))
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const to = location(req.query, 'to')
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if (!to) return next(err400('Missing destination.'))
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const opt = {}
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if ('when' in req.query) {
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opt.when = isNumber.test(req.query.when)
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? new Date(req.query.when * 1000)
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: time(req.query.when)
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}
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if ('results' in req.query) {
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opt.results = +req.query.results
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}
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if ('via' in req.query) {
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opt.via = req.query.via
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}
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if ('passedStations' in req.query) {
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opt.passedStations = parse(req.query.passedStations)
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}
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if ('transfers' in req.query) {
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opt.transfers = +req.query.transfers
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}
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if ('transferTime' in req.query) {
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opt.transferTime = +req.query.transferTime
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}
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if ('accessibility' in req.query) {
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opt.accessibility = req.query.accessibility
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}
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if ('bike' in req.query) {
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opt.bike = parse(req.query.bike)
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}
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// todo: loyaltyCard
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const products = [
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'suburban', 'subway', 'tram', 'bus', 'ferry', 'express', 'regional'
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].reduce((acc, type) => {
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if (type in req.query) acc[type] = parse(req.query[type])
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return acc
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}, {})
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if (Object.keys(products)) opt.products = products
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hafas.journeys(from, to, opt)
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.then((journeys) => {
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res.json(journeys)
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next()
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}, (err) => next(err))
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}
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module.exports = journeys
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