some timer logic

This commit is contained in:
Alec
2021-11-19 01:11:00 -05:00
parent eb4193fb1b
commit 0560dcffa9
24 changed files with 298 additions and 102 deletions

View File

@@ -9,16 +9,18 @@ See: https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API
const messageParameters = {
STOP: 'stop',
TOTAL_TIME: 'totalTime',
TICK_INTERVAL: 'tickInterval'
TICK_INTERVAL: 'tickInterval',
HOURS: 'hours',
MINUTES: 'minutes'
};
onmessage = function (e) {
if (typeof e.data === 'object'
&& e.data.hasOwnProperty(messageParameters.TOTAL_TIME)
&& e.data.hasOwnProperty(messageParameters.HOURS)
&& e.data.hasOwnProperty(messageParameters.MINUTES)
&& e.data.hasOwnProperty(messageParameters.TICK_INTERVAL)
) {
const timer = new Singleton(e.data.totalTime, e.data.tickInterval);
const timer = new Singleton(e.data.hours, e.data.minutes, e.data.tickInterval);
timer.startTimer();
}
};
@@ -30,7 +32,10 @@ function stepFn (expected, interval, start, totalTime) {
}
const delta = now - expected;
expected += interval;
postMessage({ timeRemaining: (totalTime - (expected - start)) / 1000 });
postMessage({
timeRemainingInMilliseconds: totalTime - (expected - start),
displayTime: returnHumanReadableTime(totalTime - (expected - start))
});
Singleton.setNewTimeoutReference(setTimeout(() => {
stepFn(expected, interval, start, totalTime);
}, Math.max(0, interval - delta)
@@ -38,16 +43,17 @@ function stepFn (expected, interval, start, totalTime) {
}
class Timer {
constructor (totalTime, tickInterval) {
constructor (hours, minutes, tickInterval) {
this.timeoutId = undefined;
this.totalTime = totalTime;
this.hours = hours;
this.minutes = minutes;
this.tickInterval = tickInterval;
}
startTimer () {
if (!isNaN(this.totalTime) && !isNaN(this.tickInterval)) {
if (!isNaN(this.hours) && !isNaN(this.minutes) && !isNaN(this.tickInterval)) {
const interval = this.tickInterval;
const totalTime = this.totalTime;
const totalTime = convertFromHoursToMilliseconds(this.hours) + convertFromMinutesToMilliseconds(this.minutes);
const start = Date.now();
const expected = Date.now() + this.tickInterval;
if (this.timeoutId) {
@@ -61,19 +67,20 @@ class Timer {
}
class Singleton {
constructor (totalTime, tickInterval) {
constructor (hours, minutes, tickInterval) {
if (!Singleton.instance) {
Singleton.instance = new Timer(totalTime, tickInterval);
Singleton.instance = new Timer(hours, minutes, tickInterval);
} else {
// This allows the same timer to be configured to run for different intervals / at a different granularity.
Singleton.setNewTimerParameters(totalTime, tickInterval);
Singleton.setNewTimerParameters(hours, minutes, tickInterval);
}
return Singleton.instance;
}
static setNewTimerParameters (totalTime, tickInterval) {
static setNewTimerParameters (hours, minutes, tickInterval) {
if (Singleton.instance) {
Singleton.instance.totalTime = totalTime;
Singleton.instance.hours = hours;
Singleton.instance.minutes = minutes;
Singleton.instance.tickInterval = tickInterval;
}
}
@@ -84,3 +91,24 @@ class Singleton {
}
}
}
function convertFromMinutesToMilliseconds(minutes) {
return minutes * 60 * 1000;
}
function convertFromHoursToMilliseconds(hours) {
return hours * 60 * 60 * 1000;
}
function returnHumanReadableTime(milliseconds) {
let seconds = Math.floor((milliseconds / 1000) % 60);
let minutes = Math.floor((milliseconds / (1000 * 60)) % 60);
let hours = Math.floor((milliseconds / (1000 * 60 * 60)) % 24);
hours = hours < 10 ? "0" + hours : hours;
minutes = minutes < 10 ? "0" + minutes : minutes;
seconds = seconds < 10 ? "0" + seconds : seconds;
return hours + ":" + minutes + ":" + seconds;
}