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index.js
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index.js
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function App() {
const [breakLength, setBreakLength] = React.useState(5)
const [sessionLength, setSessionLength] = React.useState(25)
const [timerPlaying, setTimerPlaying] = React.useState(false)
const [timerLabel,setTimerLabel] = React.useState("SESSION")
const [timeLeft, setTimeLeft] = React.useState(1500)
/* Setting the Timer Type */
const title = timerLabel === "SESSION" ? "Session" : "Break"
/* Break Length Increment and Decrement Functions */
function handleBreakDecrement() {
if (breakLength > 1) {
setBreakLength(preValue => preValue - 1)
}
}
function handleBreakIncrement() {
if (breakLength < 60) {
setBreakLength(preValue => preValue + 1)
}
}
/* Session Length Increment and Decrement Functions */
function handleSessionDecrement() {
if (sessionLength > 1) {
setSessionLength(preValue => preValue - 1)
setTimeLeft(preValue => preValue - 60)
}
}
function handleSessionIncrement() {
if (sessionLength < 60) {
setSessionLength(preValue => preValue + 1)
setTimeLeft(preValue => preValue + 60)
}
}
/* Time Formatting Function */
function timeFormatter() {
const minutes = Math.floor(timeLeft / 60)
const seconds = timeLeft - (minutes * 60)
const formattedSeconds = seconds < 10 ? "0" + seconds : seconds
const formattedMinutes = minutes < 10 ? "0" + minutes : minutes
return `${formattedMinutes}:${formattedSeconds}`
}
/* Setting the Timer to Play and Pause*/
function handleTimerPlaying() {
setTimerPlaying(!timerPlaying)
clearTimeout(timeout)
}
const timeout = setTimeout(() => {
if(timeLeft > 0 && timerPlaying == true){
setTimeLeft(timeLeft - 1)
}
}, 1000);
/* Setting the Reset Button */
function handleReset() {
clearTimeout(timeout)
setTimeLeft(1500)
setBreakLength(5)
setSessionLength(25)
setTimerPlaying(false)
setTimerLabel("SESSION")
const audio = document.getElementById("beep");
audio.pause()
audio.currentTime = 0;
}
/* Switching Time Type and Playing audio */
const resetTimer = () => {
const audio = document.getElementById("beep");
if(!timeLeft && timerLabel === "SESSION"){
setTimeLeft(breakLength * 60)
setTimerLabel("BREAK")
audio.play()
}
if(!timeLeft && timerLabel === "BREAK"){
setTimeLeft(sessionLength * 60)
setTimerLabel("SESSION")
audio.pause()
audio.currentTime = 0;
}
}
React.useEffect(() => {
resetTimer()
}, [[timerPlaying, timeLeft, timeout]])
/* Don't understand this */
/*
const clock = () => {
if(timerPlaying){
timeout
resetTimer()
}else {
clearTimeout(timeout)
}
}
React.useEffect(() => {
clock()
}, [timerPlaying, timeLeft, timeout])
*/
return(
<div id="clock-wrapper">
<div id="main-heading">25 + 5 Clock</div>
<div id="break-and-session-length-wrapper">
<div id="break-length-wrapper">
<div id="break-label">Break Length</div>
<div id="break-length-controls-wrapper">
<button id="break-decrement" onClick={handleBreakDecrement} disabled={timerPlaying}>Decrease</button>
<div id="break-length">{breakLength}</div>
<button id="break-increment" onClick={handleBreakIncrement} disabled={timerPlaying}>Increase</button>
</div>
</div>
<div id="session-length-wrapper">
<div id="session-label">Session Length</div>
<div id="session-length-controls-wrapper">
<button id="session-decrement" onClick={handleSessionDecrement} disabled={timerPlaying}>Decrease</button>
<div id="session-length">{sessionLength}</div>
<button id="session-increment" onClick={handleSessionIncrement} disabled={timerPlaying}>Increase</button>
</div>
</div>
</div>
<div id="timer-wrapper">
<div id="timer-label">{title}</div>
<div id="time-left">{timeFormatter()}</div>
<div id="timer-controls">
<button id="start_stop" onClick={handleTimerPlaying}>Start / Stop</button>
<button id="reset" onClick={handleReset}>Reset</button>
</div>
</div>
<audio id="beep" preload="auto" src="https://github.com/raw/freeCodeCamp/cdn/master/build/testable-projects-fcc/audio/BeepSound.wav"/>
</div>
)
}
ReactDOM.render(<App />, document.getElementById("root"))