szigyi.github.io/timer.index.html at master · szigyi/szigyi.github.io · GitHub

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<!doctype html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <title>Workout Timer</title>
    <meta name="description" content="Workout timer">
    <meta name="author" content="Szabolcs Szilagyi">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
	<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
	<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css">
	<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
    <style>
		body {
			transition: background-color 0.5s ease;
		}
		textarea {
		  height: 200px;
		}
		.hidden {
			display: none !important;
		}
		#timer {
			line-height: 0.8;
			margin-top: 1rem;
			font-size: 25vmin;
			font-weight: bold;
			font-variant-numeric: tabular-nums;
			display: inline-block;
			max-width: 100%;
			overflow: hidden;
		}
    	#currentExercise {
			line-height: 1.1;
    		margin-top: 0.5rem;
    		font-size: 10vmin;
			overflow: hidden;
    	}
    	#nextExercise {
    		margin-top: 0.5rem;
			font-size: 6vmin;
			opacity: 0.7;
			overflow: hidden;
    	}
        .workoutDuration {
        	color: #198754;
        }
        .restBetweenWorkouts {
        	color: #dc3545;
        }
        .container-main {
            margin-top: 1rem;
            margin-bottom: 1rem;
            padding: 1.5rem;
            background: rgba(255, 255, 255, 0.75);
            border-radius: 1rem;
        }
		#main-body {
			display: flex;
			align-items: stretch;
			justify-content: space-between;
		}
		#timer-and-exercise {
			min-width: 0;
			overflow: hidden;
		}
		.skip-btn {
			width: 45px;
			display: flex;
			align-items: center;
			justify-content: center;
			font-size: 2rem;
			background: rgba(255, 255, 255, 0.45);
			padding: 0;
		}
		.action-btn i {
			font-size: 2.5rem;
		}

		@media (orientation: landscape) and (max-height: 500px) {
			.container-main {
				margin-top: 0.5rem;
				margin-bottom: 0.5rem;
				padding: 0.75rem;
			}
			#timer {
				margin-top: 0.25rem;
				font-size: 20vmin;
			}
			#currentExercise {
				margin-top: 0.25rem;
				font-size: 12vmin;
			}
			#nextExercise {
				margin-top: 0.25rem;
				font-size: 5vmin;
			}
			.action-btn i {
				font-size: 1.5rem;
			}
			.skip-btn {
				font-size: 1.5rem;
				width: 35px;
			}
			#main-body {
				margin-top: 1rem !important;
			}
			h1 {
				font-size: 1.5rem;
				margin-bottom: 0.5rem !important;
			}
		}
	</style>
</head>

<body>
    <script>
   	document.addEventListener('DOMContentLoaded', function(event) {
   		readUrlParameters()
	})

	function readUrlParameters() {
		var queryString = window.location.search
		var urlParams = new URLSearchParams(queryString)

		if (urlParams.has('workoutDuration')) {
			var workoutDuration = parseInt(urlParams.get('workoutDuration'))
			document.getElementById("workoutDuration").value = workoutDuration
		}
		if (urlParams.has('restBetweenWorkouts')) {
			var restBetweenWorkouts = parseInt(urlParams.get('restBetweenWorkouts'))
			document.getElementById("restBetweenWorkouts").value = restBetweenWorkouts
		}
		if (urlParams.has('restBetweenRounds')) {
			var restBetweenRounds = parseInt(urlParams.get('restBetweenRounds'))
			document.getElementById("restBetweenRounds").value = restBetweenRounds
		}

		if (urlParams.has('exercises')) {
			var exercises = decodeURIComponent(urlParams.get('exercises')).replace(/,/g, ",\n")
			document.getElementById("exercises").value = exercises
		}
	}

	var commenceRestSound = new sound("171578__leszek-szary__3-down-1.wav");
	var commenceNextExerciseSound = new sound("171580__leszek-szary__3-up-1.wav");

	function toPercentage(current, max) {
		if (max === 0) return 1
		return 1 - (current / max)
	}

	function getColour(value) {
		// value: progress from 0 (start) to 1 (finish)
		// hue: 20 (red-orange) to 70 (yellow-green)
		// 50 is the range (70–20)
		const startHue = 20
		const endHue = 70
		const range = endHue - startHue
		var hue = (value * range + startHue).toString(10);
		return ["hsl(", hue, ",80%,50%)"].join("");
	}

	function workoutLink() {
		var workoutDuration = document.getElementById("workoutDuration").value
		var restBetweenWorkouts = document.getElementById("restBetweenWorkouts").value
		var restBetweenRounds = document.getElementById("restBetweenRounds").value
		var exercises = document.getElementById("exercises").value

		var url = new URL(window.location.href)
		url.searchParams.set('workoutDuration', encodeURIComponent(workoutDuration))
		url.searchParams.set('restBetweenWorkouts', encodeURIComponent(restBetweenWorkouts))
		url.searchParams.set('restBetweenRounds', encodeURIComponent(restBetweenRounds))
		url.searchParams.set('exercises', encodeURIComponent(exercises.replace(/\n/g, "")))
		return url
	}

	function copyLink() {
		const link = workoutLink()
		const el = document.createElement('textarea');  // Create a <textarea> element
		el.value = link;                                 // Set its value to the string that you want copied
		el.setAttribute('readonly', '');                // Make it readonly to be tamper-proof
		el.style.position = 'absolute';
		el.style.left = '-9999px';                      // Move outside the screen to make it invisible
		document.body.appendChild(el);                  // Append the <textarea> element to the HTML document
		el.select();                                    // Select the <textarea> content
		document.execCommand('copy');                   // Copy - only works as a result of a user action (e.g. click events)
		document.body.removeChild(el);                  // Remove the <textarea> element
		alert("I like the way you roll!\nCopied: " + link);
	}

	function sound(src) {
	  this.sound = document.createElement("audio");
	  this.sound.src = src;
	  this.sound.setAttribute("preload", "auto");
	  this.sound.setAttribute("controls", "none");
	  this.sound.style.display = "none";
	  document.body.appendChild(this.sound);
	  this.play = function(){
	    this.sound.play();
	  }
	  this.stop = function(){
	    this.sound.pause();
	  }
	}

	function setWorkoutPlan(name) {
		const plans = {
			'Test Workout': {
				duration: 10,
				rest: 5,
				roundRest: 8,
				exercises: 'push up, plank, lunges'
			},
			'Core Workout': {
				duration: 45,
				rest: 0,
				roundRest: 120,
				exercises: 'glute bridge, plank, deadbug, dorsal raise, scissor legs, plank reach, side plank, side plank, aleknas, bird-dog left, bird-dog right, penguin, spiderman plank, dish hold'
			},
			'Tissue Conditioning': {
				duration: 45,
				rest: 0,
				roundRest: 120,
				exercises: 'left lunge, right lunge, bent over row, squats, military press, rdl, high pull-ups, press up'
			}
		}

		const plan = plans[name]
		if (plan) {
			document.getElementById("workoutDuration").value = plan.duration
			document.getElementById("restBetweenWorkouts").value = plan.rest
			document.getElementById("restBetweenRounds").value = plan.roundRest
			document.getElementById("exercises").value = plan.exercises.replace(/, /g, ",\n")

			const url = workoutLink()
			window.history.replaceState({}, '', url)
		}
	}

	var state = new StateMachine()
	var tickingTimer = new Timer()
	var tickWatcher = new TickWatcher()
	var workout = new WorkoutPlan()
	var stateWatcher = new StateWatcher()
	document.addEventListener(tickingTimer.eventNameTick, tickingTimer)
	document.addEventListener(tickingTimer.eventNameTick, tickWatcher)
	document.addEventListener(state.eventNameState, workout)
	document.addEventListener(state.eventNameState, stateWatcher)

	function StateMachine() {
		this.eventNameState = 'state'
		this.current = 'Idle'
		this.next = function() {
			switch (this.current) {
				case 'Idle':
					console.log('Idle => Workout')
					this.current = 'Workout'
					document.getElementById("nonTimer").classList.add("hidden")
					document.querySelector("h1").classList.add("hidden")
					var workoutDuration = parseInt(document.getElementById("workoutDuration").value)
					var raw = document.getElementById("exercises").value
					var exercises = raw.split(/,|\n/).map(s => s.trim()).filter(Boolean)

					document.body.style.backgroundColor = getColour(toPercentage(workoutDuration, workoutDuration))
					commenceNextExerciseSound.play()

					workout.start(exercises)
					tickingTimer.start(workoutDuration)

					this.signalState(this.current)
					break;
				case 'Workout':
					if (workout.hasNext()) {
						var restBetweenWorkouts = parseInt(document.getElementById("restBetweenWorkouts").value)
						if (restBetweenWorkouts > 0) {
							console.log('Workout => Rest')
							this.current = 'Rest'
							commenceRestSound.play()
							tickingTimer.start(restBetweenWorkouts)
							this.signalState(this.current)
						} else {
							console.log('Workout => Workout (Rest skipped)')
							this.current = 'Workout'
							commenceNextExerciseSound.play()
							var workoutDuration = parseInt(document.getElementById("workoutDuration").value)
							tickingTimer.start(workoutDuration)
							this.signalState(this.current)
						}
					} else {
						var restBetweenRounds = parseInt(document.getElementById("restBetweenRounds").value)
						console.log('Workout => NextRoundRest')
						this.current = 'NextRoundRest'
						commenceRestSound.play()
						tickingTimer.start(restBetweenRounds)
						this.signalState(this.current)
					}
					break;
				case 'Rest':
					console.log('Rest => Workout')
					this.current = 'Workout'
					commenceNextExerciseSound.play()
					var workoutDuration = parseInt(document.getElementById("workoutDuration").value)
					tickingTimer.start(workoutDuration)
					this.signalState(this.current)
					break;
				case 'NextRoundRest':
					console.log('NextRoundRest => Workout')
					this.current = 'Workout'
					commenceNextExerciseSound.play()
					var exercises = document.getElementById("exercises").value.split(",")
					workout.start(exercises)
					var workoutDuration = parseInt(document.getElementById("workoutDuration").value)
					tickingTimer.start(workoutDuration)
					this.signalState(this.current)
					break;
			}
		}
		this.stop = function() {
			console.log('... => Idle')
			this.current = 'Idle'
			tickingTimer.stop()
			document.getElementById("nonTimer").classList.remove("hidden")
			document.querySelector("h1").classList.remove("hidden")
			document.body.style.backgroundColor = ""
		}
		this.skipNext = function() {
			if (this.current === 'Idle') return

			if (workout.currentIndex >= workout.exercises.length) {
				this.current = 'NextRoundRest'
				this.signalState(this.current)
				return
			}

			tickingTimer.stop()
			this.current = 'Workout'

			this.signalState(this.current)
			commenceNextExerciseSound.play()
			var workoutDuration = parseInt(document.getElementById("workoutDuration").value)
			tickingTimer.start(workoutDuration)
		}
		this.skipPrevious = function() {
			if (this.current === 'Idle') return

			tickingTimer.stop()
			this.current = 'Workout'

			// workout.next() is called when 'Workout' state starts.
			// So when we are in Workout, currentIndex is already pointing to the NEXT one.
			// If we want to go to PREVIOUS exercise:
			// currentIndex points to CURRENT+1.
			// To go to PREVIOUS: we need to set index to CURRENT-1.
			// So we need to decrement by 2.

			workout.previous() // back to current
			workout.previous() // back to previous
			if (workout.currentIndex < 0) workout.currentIndex = 0

			this.signalState(this.current)
			commenceNextExerciseSound.play()
			var workoutDuration = parseInt(document.getElementById("workoutDuration").value)
			tickingTimer.start(workoutDuration)
		}
		this.signalState = function(name) {
			var tick = new CustomEvent(this.eventNameState, {
				bubbles: true,
				detail: { name: name }
			})
			document.dispatchEvent(tick)
		}
	}

	function Timer() {
		this.eventNameTick = 'tick'
		this.remainingSeconds = 0
		this.timeoutRef
		this.isActive = false

		this.start = function(seconds) {
			this.stop()
			this.isActive = true
			this.remainingSeconds = seconds
			this.refreshDisplay()
			this.prepareForNextTick()
		}
		this.stop = function() {
			this.isActive = false
			console.log('Clearing timeout: ' + this.timeoutRef)
			clearTimeout(this.timeoutRef)
		}
		this.refreshDisplay = function() {
			document.getElementById("timer").innerHTML = this.remainingSeconds
		}

		this.sleepingBeauty = function() {
			function whenIWakeUp(name, seconds) {
				var tick = new CustomEvent(name, {
					bubbles: true,
					detail: { remainingSeconds: seconds }
				})
				document.dispatchEvent(tick)
				// console.log('Sleeping beauty is active: ' + tick.detail.remainingSeconds)
			}
			this.timeoutRef = setTimeout(() => whenIWakeUp(this.eventNameTick, this.remainingSeconds), 1000)
		}
		this.prepareForNextTick = function() {
			this.remainingSeconds--
			this.sleepingBeauty()
		}
		this.handleEvent = function(tick) {
			if (!this.isActive) return
			// console.log('Waking up now! ' + tick.detail.remainingSeconds)
			this.refreshDisplay()
			this.prepareForNextTick()
			// console.log('Complition ' + tick.detail.remainingSeconds)
		}
	}

	function WorkoutPlan() {
		this.exercises = []
		this.currentIndex = 0
		this.start = function(ex) {
			this.exercises = ex
			this.currentIndex = 0
		}
		this.next = function() {
			this.currentIndex++
		}
		this.previous = function() {
			if (this.currentIndex > 0) {
				this.currentIndex--
			}
		}
		this.hasNext = function() {
			return this.currentIndex < this.exercises.length
		}
		this.refreshDisplay = function() {
			var current = this.exercises[this.currentIndex]
			var next = this.exercises[this.currentIndex + 1]
			var totalExercises = this.exercises.length

			var currentNumber = this.currentIndex + 1
			var nextNumber = this.currentIndex + 2

			if (current) {
				document.getElementById("currentExercise").innerHTML = currentNumber + ". " + current.toUpperCase()
			} else {
				document.getElementById("currentExercise").innerHTML = "{Missing Exercise}"
			}

			if (next) {
				document.getElementById("nextExercise").innerHTML = "up next: " + nextNumber + ". " + next.toLowerCase()
			} else {
				document.getElementById("nextExercise").innerHTML = "up next: rest until next round"
			}
		}

		this.handleEvent = function(stateEvent) {
			if (stateEvent.detail.name === 'Workout') {
				this.refreshDisplay()
				this.next()
			}
		}
	}

	function TickWatcher() {
		this.handleEvent = function(tick) {
			if (state.current === 'Workout') {
				var workoutDuration = parseInt(document.getElementById("workoutDuration").value)
				document.body.style.backgroundColor = getColour(toPercentage(tick.detail.remainingSeconds, workoutDuration))
			}

			if (tick.detail.remainingSeconds == 0) {
				console.log('Stoping timer as time has come. Next state....')
				tickingTimer.stop()
				state.next()
			}
		}
	}
	function StateWatcher() {
		this.handleEvent = function(stateEvent) {
			switch (stateEvent.detail.name) {
				case 'Workout':
					document.getElementById("timer").classList.remove("restBetweenWorkouts")
					document.getElementById("timer").classList.add("workoutDuration")
					break;
				case 'Rest':
					document.body.style.backgroundColor = "hsl(100,80%,50%)"
					document.getElementById("timer").classList.remove("workoutDuration")
					document.getElementById("timer").classList.add("restBetweenWorkouts")
					document.getElementById("currentExercise").innerHTML = "REST"

					var nextExercise = workout.exercises[workout.currentIndex]
					var nextNumber = workout.currentIndex + 1
					var totalExercises = workout.exercises.length

					if (nextExercise) {
						document.getElementById("nextExercise").innerHTML = "up next: " + nextNumber + ". " + nextExercise.toLowerCase()
					} else {
						document.getElementById("nextExercise").innerHTML = "up next: end of round"
					}
					break;
				case 'NextRoundRest':
					document.body.style.backgroundColor = "hsl(160,80%,50%)"
					document.getElementById("timer").classList.remove("workoutDuration")
					document.getElementById("timer").classList.add("restBetweenWorkouts")
					document.getElementById("currentExercise").innerHTML = "REST UNTIL NEXT ROUND"
					document.getElementById("nextExercise").innerHTML = "get ready!"
					break;
			}
		}
	}
	</script>

	<div class="container container-main shadow-lg">
		<h1 class="text-center mb-4">Workout Timer</h1>
		<div id="nonTimer">
			<div id="workoutPlans" class="row mb-4">
				<div class="col-md-4">
					<button type="button" class="btn btn-outline-primary w-100" onclick="setWorkoutPlan('Test Workout')">
						Test Workout
					</button>
				</div>
				<div class="col-md-4">
					<button type="button" class="btn btn-outline-primary w-100" onclick="setWorkoutPlan('Core Workout')">
						Core Workout
					</button>
				</div>
				<div class="col-md-4">
					<button type="button" class="btn btn-outline-primary w-100" onclick="setWorkoutPlan('Tissue Conditioning')">
						Tissue Conditioning
					</button>
				</div>
			</div>
			<div class="row mb-4">
				<div class="col-12 text-center">
					<button type="button" class="btn btn-secondary w-100" onclick="copyLink()" id="copyLink">
						Click to Copy the link of this workout!
					</button>
				</div>
			</div>
			<div class="row">
				<div class="col-md-6">
					<div class="mb-3">
						<label for="workoutDuration" class="form-label">Workout duration in seconds</label>
						<input type="number" id="workoutDuration" class="form-control" name="workoutDuration" placeholder="45" value="45" />
					</div>
					<div class="mb-3">
						<label for="restBetweenWorkouts" class="form-label">Rest between workouts in seconds</label>
						<input type="number" id="restBetweenWorkouts" class="form-control" name="restBetweenWorkouts" placeholder="15" value="15" />
					</div>
					<div class="mb-3">
						<label for="restBetweenRounds" class="form-label">Rest between rounds in seconds</label>
						<input type="number" id="restBetweenRounds" class="form-control" name="restBetweenRounds" placeholder="120" value="120" />
					</div>
				</div>
				<div class="col-md-6">
					<div class="mb-3">
						<label for="exercises" class="form-label">List of Exercises (comma separated)</label>
						<textarea id="exercises" name="exercises" class="form-control" placeholder="burpees, push up, plank, sculler sit up, superman, mountain climbers, caterpillars, squat jumps, lunges, triceps dips">burpees,
push up,
plank,
sculler sit up,
superman,
mountain climbers,
caterpillars,
squat jumps,
lunges,
triceps dips</textarea>
					</div>
				</div>
			</div>
		</div>

		<div class="row g-2 mt-2">
			<div class="col-6">
				<button type="button" class="btn btn-success btn-lg w-100 action-btn" onclick="state.next()">
					<i class="bi bi-play-fill"></i>
				</button>
			</div>
			<div class="col-6">
				<button type="button" class="btn btn-danger btn-lg w-100 action-btn" onclick="state.stop()">
					<i class="bi bi-stop-fill"></i>
				</button>
			</div>
		</div>

		<div id="main-body" class="row mt-5 text-center flex-nowrap">
			<div class="col-auto px-0">
				<button type="button" class="btn btn-light h-100 skip-btn" onclick="state.skipPrevious()">
					<i class="bi bi-chevron-double-left"></i>
				</button>
			</div>
			<div id="timer-and-exercise" class="col">
				<p id="timer" class="mb-0">00</p>
				<p id="currentExercise" class="text-uppercase font-weight-bold mb-0">{current exercise}</p>
				<p id="nextExercise" class="text-lowercase">{next exercise}</p>
			</div>
			<div class="col-auto px-0">
				<button type="button" class="btn btn-light h-100 skip-btn" onclick="state.skipNext()">
					<i class="bi bi-chevron-double-right"></i>
				</button>
			</div>
		</div>
	</div>
</body>

</html>