function calculatedistance(lat1, lat2, lat3, lat4) {
    //var vanlat =  // Define van latitude;
    //var vanlng =  // Define van longitude;
    //var breakdownlat =  // Define breakdown latitude;
    //var breakdownlng =  // Define breakdown longitude;

    var heremapurlvaluetest = "https://route.ls.hereapi.com/routing/7.2/calculateroute.json?" +
        "waypoint0=" + lat1 + "," + lat2 +
        "&waypoint1=" + lat3 + "," + lat4 +
        "&mode=shortest%3Bcar%3Btraffic%3Aenabled&departure=now" +
        "&apiKey=DW3-YCFFZtJzlAQpTfVPoXADcZpEeZe3t8h6ganVsqo";

    console.log(heremapurlvaluetest);

    var request = getDataFromAPI("GET", heremapurlvaluetest, function (data) {
        // Handle response data here
        // console.log(data);
        readDistanceAndDuration(data);

    });

    // Error handling
    if (!request) {
        $('#spninfo').html('Duration: ' + duration + ' <br>Distance: ' + distance + ' km');
        console.error("Failed to create XMLHttpRequest.");
        return;
    }
}


function readDistanceAndDuration(response) {
    // Parse JSON response
    var jsonResponse = JSON.parse(response);

    // Check if response contains the summary section
    if (jsonResponse && jsonResponse.response && jsonResponse.response.route && jsonResponse.response.route.length > 0) {
        var route = jsonResponse.response.route[0]; // Assuming there's only one route

        // Extract distance and duration from the summary section
        var summary = route.summary;
        distance = summary.distance; // Distance in meters
        var durationInSeconds = summary.travelTime; // Duration in seconds

        // Convert duration from seconds to hours and minutes
        var durationInHours = Math.floor(durationInSeconds / 3600);
        var durationInMinutes = Math.floor((durationInSeconds % 3600) / 60);
        distance = (distance / 1000);
        // if (durationInHours = "0") {
            // //alert('if');
            // duration = durationInMinutes + " minutes";
        // }
        // else {
            // duration = durationInHours + " hours " + durationInMinutes + " minutes";
        // }
		duration = durationInHours + " hours " + durationInMinutes + " minutes";
        // Output the distance and duration
        console.log(distance + 'distance' + duration);
       //  $('#spninfo').html('Duration: ' + duration + ' <br>Distance: ' + distance + ' km');
    } else {
        console.error("Invalid or empty response.");
    }
}
function getDataFromAPI(method, url, callback) {
    var xhr = new XMLHttpRequest();

    xhr.onreadystatechange = function () {
        if (xhr.readyState === XMLHttpRequest.DONE) {
            if (xhr.status === 200) {
                // Request was successful
                if (callback) {
                    callback(xhr.responseText);
                }
            } else {
                // Error handling
                console.error("Error occurred while fetching data:", xhr.status);
            }
        }
    };

    xhr.open(method, url);
    xhr.send();
}