Salary Timer. Calculates how much you earned at current point in time during the day

salarytimer.js

// Set the constants for schedule and pay rate
const schedule = {
  start: "09:00", // Start of schedule in HH:mm format
  end: "17:00", // End of schedule in HH:mm format
  breakStart: "12:00", // Start of break time in HH:mm format
  breakEnd: "13:00" // End of break time in HH:mm format
};

const payRate = 100; // Pay rate in dollars per day

// Get the current time in HH:mm format
let currentTime = new Date().toLocaleTimeString("en-US", {
  hour12: false,
  hour: "2-digit",
  minute: "2-digit"
});

// Convert a time string to minutes
function timeToMinutes(time) {
  let [hour, minute] = time.split(":");
  return parseInt(hour) * 60 + parseInt(minute);
}

// Calculate the percentage of pay rate based on the current time and schedule
function calculatePercentage(currentTime, schedule) {
  // Convert the times to minutes
  let currentMinutes = timeToMinutes(currentTime);
  let startMinutes = timeToMinutes(schedule.start);
  let endMinutes = timeToMinutes(schedule.end);
  let breakStartMinutes = timeToMinutes(schedule.breakStart);
  let breakEndMinutes = timeToMinutes(schedule.breakEnd);

  // Check if the current time is within the schedule
  if (currentMinutes < startMinutes) {
    return 0; // Before the start of schedule, no pay
  } else if (
    currentMinutes >= breakStartMinutes &&
    currentMinutes <= breakEndMinutes
  ) {
    return (breakStartMinutes - startMinutes) / (endMinutes - startMinutes); // Within break time, pay is fixed at the start of break
  } else if (currentMinutes >= endMinutes) {
    return 1; // After the end of schedule, full pay
  } else {
    return (currentMinutes - startMinutes) / (endMinutes - startMinutes); // Within working hours, pay is proportional to the time worked
  }
}


// Calculate the floating point number with two decimal points
let percentage = calculatePercentage(currentTime, schedule);
let number = percentage * payRate;
number = number.toFixed(2); // Round to two decimal points


// tests
function assert(cond) {
  if (!cond) {
    throw Error("Test failure")
  }
}

assert(timeToMinutes("00:00") === 0);
assert(timeToMinutes("23:59") === 1439);
assert(timeToMinutes("12:34") === 754);
assert(calculatePercentage("08:59", schedule) === 0);
assert(calculatePercentage("17:01", schedule) === 1);
assert(calculatePercentage("12:00", schedule) === 0.375);
assert(calculatePercentage("12:30", schedule) === 0.375);
assert(calculatePercentage("13:00", schedule) === 0.375);
assert(calculatePercentage("09:00", schedule) === 0);
assert(calculatePercentage("10:30", schedule) === 0.1875);
assert(calculatePercentage("11:59", schedule) === 0.3729166666666667);
assert(calculatePercentage("13:01", schedule) === 0.5020833333333333);
assert(calculatePercentage("15:15", schedule) === 0.78125);
assert(calculatePercentage("17:00", schedule) === 1);



// Print the number
print(number);