db-vendo-client/p/db/index.js
2017-11-13 00:30:14 +01:00

111 lines
2.3 KiB
JavaScript

'use strict'
const crypto = require('crypto')
const _formatStation = require('../../format/station')
const _parseLine = require('../../parse/line')
const {accessibility, bike} = require('../../format/filters')
const modes = require('./modes')
const formatLoyaltyCard = require('./loyalty-cards').format
const transformReqBody = (body) => {
body.client = {id: 'DB', v: '16040000', type: 'IPH', name: 'DB Navigator'}
body.ext = 'DB.R15.12.a'
body.ver = '1.15'
body.auth = {type: 'AID', aid: 'n91dB8Z77MLdoR0K'}
return body
}
const salt = 'bdI8UVj40K5fvxwf'
const transformReq = (req) => {
const hash = crypto.createHash('md5')
hash.update(req.body + salt)
if (!req.query) req.query = {}
req.query.checksum = hash.digest('hex')
return req
}
const transformJourneysQuery = (query, opt) => {
const filters = query.jnyFltrL
if (opt.accessibility && accessibility[opt.accessibility]) {
filters.push(accessibility[opt.accessibility])
}
if (opt.bike) filters.push(bike)
query.trfReq = {
jnyCl: 2, // todo
tvlrProf: [{
type: 'E',
redtnCard: opt.loyaltyCard
? formatLoyaltyCard(opt.loyaltyCard)
: null
}],
cType: 'PK'
}
return query
}
const parseLine = (profile, l) => {
const res = _parseLine(profile, l)
res.mode = res.product = null
if ('class' in res) {
const data = modes.bitmasks[parseInt(res.class)]
if (data) {
res.mode = data.mode
res.product = data.product
}
}
return res
}
const isIBNR = /^\d{6,}$/
const formatStation = (id) => {
if (!isIBNR.test(id)) throw new Error('station ID must be an IBNR.')
return _formatStation(id)
}
const defaultProducts = {
suburban: true,
subway: true,
tram: true,
bus: true,
ferry: true,
national: true,
nationalExp: true,
regional: true,
regionalExp: true
}
const formatProducts = (products) => {
products = Object.assign(Object.create(null), defaultProducts, products)
return {
type: 'PROD',
mode: 'INC',
value: modes.stringifyBitmask(products) + ''
}
}
// todo: find option for absolute number of results
const dbProfile = {
timezone: 'Europe/Berlin',
endpoint: 'https://reiseauskunft.bahn.de/bin/mgate.exe',
transformReqBody,
transformReq,
transformJourneysQuery,
// todo: parseLocation
parseLine,
parseProducts: modes.parseBitmask,
formatStation,
formatProducts
}
module.exports = dbProfile