const createClient = require('hafas-client')
const insaProfile = require('hafas-client/p/insa')

const client = createClient(insaProfile, 'my-awesome-program')

var queryPromise = client.nearby({
    type: 'location',
    latitude: 51.33157,
    longitude: 12.40679
}, {
    distance: 400
})

async function getNearestStation() {
    
}

async function getNearestStationDepartures() {
    var result = await queryPromise
    printResult(client.departures(result[0]['id']))
}

function getTime(stringTime) {
    let d = new Date(stringTime)
    return String(d.getHours()).padStart(2, "0") + ":" + String(d.getMinutes()).padStart(2, "0")
}

function cutPadString(string, length) {
    let outstring = ""
    if (string.length > length) {
        outstring = string.substring(0, length - 3) + "..."
    } else {
        if (string.length < length) {
            outstring = string.padEnd(length)
        } else {
            outstring = string
        }
    }
    return outstring
}

async function printResult(departures) {
    result = await departures
    result.forEach(element => {
        let delay = ""
        if (element['delay'] != 0) {
            delay = "(+" + element['delay'] / 60 + ")"
        }
        console.log(cutPadString(element['line']['id'], 4) + " " + cutPadString(element['direction'], 20) + " " + cutPadString(getTime(element['when']), 6) + delay)

    });
}

getNearestStationDepartures()