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<html data-bs-theme="dark">
<head>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-T3c6CoIi6uLrA9TneNEoa7RxnatzjcDSCmG1MXxSR1GAsXEV/Dwwykc2MPK8M2HN" crossorigin="anonymous">
</head>
<body>
<div class="container">
<label for="server-port" class="form-label">Server Port</label>
<div class="input-group mb-3">
<input type="text" class="form-control" aria-label="Port Number" value="8989" id="port">
<button class="btn btn-primary" type="button" onclick="connect()">Connect</button>
</div>
<div class="row">
<div class="col">
<label for="volume_setting" class="form-label">Volume Setting</label>
<input type="range" class="form-range" min="0" max="255" id="volume_setting">
</div>
<div class="col">
<label for="change_counter" class="form-label">Change Counter</label>
<input type="range" class="form-range" min="0" max="255" id="change_counter">
</div>
<div class="col">
<div class="form-check form-switch">
<input class="form-check-input" type="checkbox" role="switch" id="muted">
<label class="form-check-label" for="muted">Muted</label>
</div>
</div>
</div>
<button class="btn btn-primary" type="button" onclick="update_state()">Notify New Volume State</button>
<hr>
<div id="socketStateContainer" class="bg-body-tertiary p-3 rounded-2">
<h3>Log</h3>
<code id="socketState">
</code>
</div>
</div>
<script>
let portInput = document.getElementById("port")
let volumeSetting = document.getElementById("volume_setting")
let muted = document.getElementById("muted")
let changeCounter = document.getElementById("change_counter")
let socket = null
function connect() {
if (socket != null) {
return
}
socket = new WebSocket(`ws://localhost:${portInput.value}`);
socket.onopen = _ => {
socketState.innerText += 'OPEN\n'
}
socket.onclose = _ => {
socketState.innerText += 'CLOSED\n'
socket = null
}
socket.onerror = (error) => {
socketState.innerText += 'ERROR\n'
console.log(`ERROR: ${error}`)
}
socket.onmessage = (event) => {
socketState.innerText += `<- ${event.data}\n`
let volume_state = JSON.parse(event.data)
volumeSetting.value = volume_state.volume_setting
changeCounter.value = volume_state.change_counter
muted.checked = volume_state.muted ? true : false
}
}
function send(message) {
if (socket && socket.readyState == WebSocket.OPEN) {
let jsonMessage = JSON.stringify(message)
socketState.innerText += `-> ${jsonMessage}\n`
socket.send(jsonMessage)
} else {
socketState.innerText += 'NOT CONNECTED\n'
}
}
function update_state() {
send({
volume_setting: parseInt(volumeSetting.value),
change_counter: parseInt(changeCounter.value),
muted: muted.checked ? 1 : 0
})
}
</script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"
integrity="sha384-C6RzsynM9kWDrMNeT87bh95OGNyZPhcTNXj1NW7RuBCsyN/o0jlpcV8Qyq46cDfL"
crossorigin="anonymous"></script>
</body>
</html>
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