static/js/socket.js

const output = document.getElementById("output");
const input = document.getElementById("command");
const sendButton = document.getElementById("send");

const protocol = location.protocol === "https:" ? "wss" : "ws";

const socket = new WebSocket(`${protocol}://${location.host}/ws`);

socket.onopen = () => {
    appendOutput("[Connected]\n");
};

socket.onclose = () => {
    appendOutput("\n[Disconnected]\n");
};

socket.onerror = () => {
    appendOutput("\n[Connection Error]\n");
};

socket.onmessage = (event) => {
    appendOutput(event.data);
};

function sendCommand() {

    const command = input.value;

    if (!command.trim()) return;

    socket.send(command);

    input.value = "";

    autoResize();
}

sendButton.addEventListener("click", sendCommand);

input.addEventListener("keydown", (e) => {

    if (e.key === "Enter" && !e.shiftKey) {

        e.preventDefault();

        sendCommand();
    }

});

function appendOutput(text) {

    output.textContent += text;

    output.scrollTop = output.scrollHeight;

}