08. On Time for the Exam

function onTimeForTheExam(examHour, examMinute, arrivalHour, arrivalMinute){
    let examTime = examHour * 60 + examMinute;
    let arrivalTime = arrivalHour * 60 + arrivalMinute;

    let difference = arrivalTime - examTime;

    if (difference > 0){
        console.log('Late');

        if (difference < 60){
            console.log(`${difference} minutes after the start`);
        } else {
            let hours = Math.floor(difference / 60);
            let minutes = difference % 60;

            if (minutes < 10){
                console.log(`${hours}:0${minutes} hours after the start`);
            } else {
                console.log(`${hours}:${minutes} hours after the start`);
            }
        }
    } else if (difference >= -30){
        console.log('On time');

        if (difference != 0){
            console.log(`${Math.abs(difference)} minutes before the start`);
        }
    } else {
        console.log('Early');
        let absDifference = Math.abs(difference);

        if (absDifference < 60){
            console.log(`${absDifference} minutes before the start`);
        } else {
            let hours = Math.floor(absDifference / 60);
            let minutes = absDifference % 60;

            if (minutes < 10){
                console.log(`${hours}:0${minutes} hours before the start`);
            } else {
                console.log(`${hours}:${minutes} hours before the start`);
            }
        }
    }
}