function solve() {

    let baseUrl = 'http://localhost:3030/jsonstore/bus/schedule/';
    let firstStop = 'depot';
    let textArea = document.getElementById('info');

    let departButton = document.getElementById('depart');
    let arriveButton = document.getElementById('arrive');

    function depart() {
        departButton.disabled = true;
        arriveButton.disabled = false;

        fetch(`${baseUrl}${firstStop}`)
            .then(res => res.json())
            .then(response => {
                textArea.textContent = `Next stop ${response.name}`;
            });
    }

    function arrive() {
        departButton.disabled = false;
        arriveButton.disabled = true;

        fetch(`${baseUrl}${firstStop}`)
            .then(res => res.json())
            .then(response => {
                textArea.textContent = `Arriving at ${response.name}`;
                firstStop = response.next;
            });


    }

    return {
        depart,
        arrive
    };
}

let result = solve();