StudioClock.svelte 5.97 KB
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<script>
	import { onMount } from 'svelte';
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	export let apiUrl = "http://localhost:3333/api/v1";


	let time = new Date(); 
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	let queryCurrent = "/clock";
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	let data;
	let currentTrack = null;
	let timeLeft;
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	// these automatically update when `time`
	// changes, because of the `$:` prefix
	$: hours = time.getHours();
	$: minutes = time.getMinutes();
	$: seconds = time.getSeconds();

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	data = fetchApi(queryCurrent);


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	onMount(() => {
		const interval = setInterval(() => {
			time = new Date();
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			timeLeft -= 1;

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			if (timeLeft <= 0 || data == null) {
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				currentTrack = null;
				data = null;
				data = fetchApi(queryCurrent);
			}
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		}, 1000);

		return () => {
			clearInterval(interval);
		};
	});
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	async function fetchApi(query) {
		let response = await fetch(apiUrl+query);
		let data;

		try {
			data = await response.json();
		} catch(e) {
			console.log("Error while converting response to JSON!", e);
			throw new Error(response.statusText);
		}
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		if (response.ok) {
			return data;
		} else {
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			console.log("Error:", data);
			throw new Error(data.message);
		}
	}

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	function setCurrentTrack(info) {
		if (currentTrack == null && info != null && info.track != null) {
			currentTrack = info;
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			let t = time - Date.parse(info.track_start);
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			t = parseInt(t/1000);

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			timeLeft = info.track.duration - t - 4;
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		}
		return "";
	}

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	function displayTitle(info) {
		if (info != null && info.track != null) {
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			let artist = "";
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			if (info.track.artist != "")
				artist = info.track.artist + " - ";
			return artist + info.track.title;
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		}
		return "";
	}

	function formatTime(seconds) {
		if (seconds != null && Number.isInteger(seconds)) {
			let d = new Date(null);
			d.setSeconds(seconds);

			let s;
			if (seconds > 3600)
				s = d.toISOString().substr(11, 8);
			else
				s = d.toISOString().substr(14, 5);
			return s;
		}
		return "";
	}

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	function displayShowName(show) {
		let name = ""
		if (show == null || show.name == null) {
			name = '<span class="error">No show scheduled!</span>';
		} else {
			name = show.name;
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		}
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		return name;
	}

	function displayShowSchedule(schedule) {
		let str = "";

		if (schedule != null && schedule.schedule_start != null) {
			let scheduleStart = ""
			let scheduleEnd = "";

			if (schedule.schedule_start != null) {
				let scheduleStart = new Date(Date.parse(schedule.schedule_start));
				scheduleStart = scheduleStart.toLocaleTimeString(navigator.language, {
					hour: '2-digit',
					minute:'2-digit'
				});
				str = "(" + scheduleStart;
			}
			if (schedule.schedule_end != null) {
				scheduleEnd = new Date(Date.parse(schedule.schedule_end));
				scheduleEnd = scheduleEnd.toLocaleTimeString(navigator.language, {
					hour: '2-digit',
					minute:'2-digit'
				});
				str = str + " - " + scheduleEnd + ")";
			} else {
				str += ")";
			}

		}
		return str;
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	}

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</script>

<style>
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	#studio-clock {
		width: calc(100% - 200px);
		margin:100px;
		display: -webkit-flex;
		display: -ms-flexbox;
		display: flex;
		border: 2px solid #333;
		flex-direction: row;
	}

	#left-column {
		width: 30%;
		padding: 25px;
	}

	#right-column {
		width: 70%;
		padding: 25px;
	}

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	#current-schedule,
	#next-schedule {
		margin: 0 0 40px 20px;
	}

	#track-list {
		border: 2px solid #333;
		margin: 20px 20px 40px 20px;
		padding: 10px;
	}

	.play-icon,
	.track-time-left {
		margin: 12px;
	}

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	.active {
		color: green;
	}

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	svg {
		width: 100%;
		height: 100%;
	}

	.clock-face {
		stroke: #333;
		fill: white;
	}

	.minor {
		stroke: #999;
		stroke-width: 0.5;
	}

	.major {
		stroke: #333;
		stroke-width: 1;
	}

	.hour {
		stroke: #333;
	}

	.minute {
		stroke: #666;
	}

	.second, .second-counterweight {
		stroke: rgb(180,0,0);
	}

	.second-counterweight {
		stroke-width: 3;
	}
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	footer {
		width: 100%;
		text-align: center;
		font-size: 0.8em;
		color: gray;
	}
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</style>

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<div id="studio-clock">
	<div id="left-column" class="column">
		<svg viewBox='-50 -50 100 100'>
			<circle class='clock-face' r='48'/>

			<!-- markers -->
			{#each [0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55] as minute}
				<line
					class='major'
					y1='35'
					y2='45'
					transform='rotate({30 * minute})'
				/>

				{#each [1, 2, 3, 4] as offset}
					<line
						class='minor'
						y1='42'
						y2='45'
						transform='rotate({6 * (minute + offset)})'
					/>
				{/each}
			{/each}

			<!-- hour hand -->
			<line
				class='hour'
				y1='2'
				y2='-20'
				transform='rotate({30 * hours + minutes / 2})'
			/>
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			<!-- minute hand -->
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			<line
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				class='minute'
				y1='4'
				y2='-30'
				transform='rotate({6 * minutes + seconds / 10})'
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			/>
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			<!-- second hand -->
			<g transform='rotate({6 * seconds})'>
				<line class='second' y1='10' y2='-38'/>
				<line class='second-counterweight' y1='10' y2='2'/>
			</g>
		</svg>
	</div>

	<div id="right-column" class="column">

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		{#await data}
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			<div class="spinner-border mt-5" role="status">
				<span class="sr-only">Loading...</span>
			</div>
		{:then value}
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			{setCurrentTrack(value)}
			<!-- <h2>&#9654; Playing</h2> -->
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			{#if value.current.show}

			<div id="current-schedule">
				<h1 class="schedule-title">{@html displayShowName(value.current.show)} {displayShowSchedule(value.current)}</h1>
				<div class="schedule-details">
					<b>Type:</b> {value.current.type}, <b>Host:</b> {value.current.host}</div>
				</div>
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			<div id="track-list">
				<div id="current-track">
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					<h2>
						<span class="play-icon">&#9654;</span>
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						<span class="active track-title">{displayTitle(value)}</span>
						<span class="track-time-left">({formatTime(timeLeft)})</span>
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					</h2>
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				</div>
			</div>
			<div id="next-schedule">
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				<h2 class="schedule-title">Next: {@html displayShowName(value.next.show)} {displayShowSchedule(value)}</h2>
				<div class="schedule-details">
					<b>Type:</b> {value.next.type}, <b>Host:</b> {value.next.host}
				</div>
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			</div>
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			{/if}
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		{:catch error}
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			<p style="color:red">{error}</p>
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		{/await}
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	</div>

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</div>

<footer>Studio Clock is powered by <a href="https://gitlab.servus.at/autoradio">Aura Engine</a></footer>