fixed scrolling and buffer times- oh yeah also huge backend overhual
This commit is contained in:
parent
1eeb632ff2
commit
524969370d
GPG key ID:
CF99829C92678188
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@ -1,11 +1,22 @@
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var buffer = "";
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var send_buffer = "";
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var recv_buffer = [];
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var send_buffer = [];
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var content;
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var mobile_input;
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var client;
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var my_colour = false;
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var pre_buffer_chars = 0;
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var term_interval = 10;
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var ready = false;
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const DATA_TYPES = {
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text: 0,
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colour: 1,
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buffer: 2,
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backspace: 3,
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backword: 4,
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arrow: 5,
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};
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function start() {
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console.log("%chello, world!", "color: #b7fd49; font-size: 3rem; font-weight: bold");
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@ -34,74 +45,115 @@ to help you feel a little more comfortable, i've prepared some commands for you:
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content = document.getElementById("content");
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mobile_input = document.getElementById("mobile-input");
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content.addEventListener("click", () => {
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content.addEventListener("touchend", () => {
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mobile_input.focus();
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});
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buffer += "Connecting to the server...";
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add_system_message("Connecting to the server...");
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setTimeout(connect, 500);
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setInterval(() => {
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if (send_buffer.length > 0) {
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const data = JSON.stringify(send_buffer[0]);
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client.send(data);
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send_buffer = send_buffer.slice(1);
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}
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}, 1000 / 600);
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loop();
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}
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function loop() {
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if (buffer.length > 0) {
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const char = buffer.substring(0, 1);
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insert_text(char);
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buffer = buffer.substring(1);
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}
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if (send_buffer.length > 0) {
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const char = send_buffer.substring(0, 1);
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client.send(char);
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send_buffer = send_buffer.substring(1);
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}
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mobile_input.value = content.innerText;
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setTimeout(loop, term_interval);
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setTimeout(loop, 1000 / 60);
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}
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function connect() {
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client = new WebSocket("wss://" + window.location.host);
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client.addEventListener('open', () => {
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// insert_text('\x00');
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buffer += "\nConnection successful.\n\n";
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buffer += "=== BEGIN SESSION ===\n\n";
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add_system_message(`\nConnection successful.\n\n`);
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add_system_message(`=== BEGIN SESSION ===\n\n`);
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new_caret();
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});
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client.addEventListener('message', event => {
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buffer += event.data;
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if (pre_buffer_chars == 0) {
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pre_buffer_chars = content.innerText.length + buffer.length;
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}
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});
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client.addEventListener('message', event => { handle_message(JSON.parse(event.data)) });
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client.addEventListener('close', () => {
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insert_text("\n\n[CONNECTION LOST, PLEASE REFRESH]");
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add_system_message(`\n[CONNECTION LOST, PLEASE REFRESH]\n`);
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});
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}
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function insert_text(text) {
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const carat = content.querySelector("#carat");
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if (carat) carat.remove();
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function add_system_message(text) {
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const span = document.createElement("span");
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span.classList.add('sticky');
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span.innerText = text;
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content.appendChild(span);
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if (text == "\x00") {
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content.innerText = "";
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pre_buffer_chars = 0;
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} else if (text == "\b") {
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if (content.innerText.length > pre_buffer_chars) {
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new_caret();
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}
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function handle_message(data) {
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if (!data.type && data.type != 0) return;
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const is_at_bottom = content.scrollTop == content.scrollTopMax;
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switch (data.type) {
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case DATA_TYPES.colour:
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my_colour = data.colour;
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console.log(`%cColour has been changed to ${my_colour}`, `color: ${my_colour}`);
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break;
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case DATA_TYPES.backspace:
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content.querySelectorAll("#caret").forEach(caret => caret.remove());
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/*
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const last_child = content.lastChild;
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if (last_child.classList.contains('sticky')) break;
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last_child.remove();
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*/
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if (content.innerText.length <= pre_buffer_chars) {
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break;
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}
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content.innerText = content.innerText.slice(0, content.innerText.length - 1);
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}
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} else {
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content.innerText += text;
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}
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break;
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case DATA_TYPES.text:
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/*
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const span = document.createElement("span");
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if (data.colour) span.style.color = data.colour;
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if (data.sticky) span.classList.add('sticky');
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span.innerText = data.text;
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content.appendChild(span);
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*/
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content.innerText += data.text;
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break;
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case DATA_TYPES.buffer:
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content.innerText += data.data;
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break;
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/*
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data.data.forEach(block => {
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handle_message(block);
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});
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*/
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}
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const new_carat = document.createElement("div");
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new_carat.id = "carat";
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content.appendChild(new_carat);
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if (pre_buffer_chars == 0) {
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pre_buffer_chars = content.innerText.length;
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}
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new_caret();
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if (is_at_bottom) content.scrollTop = content.scrollTopMax;
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}
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function new_caret() {
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content.querySelectorAll("#caret").forEach(caret => caret.remove());
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const new_caret = document.createElement("div");
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new_caret.id = "caret";
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if (my_colour) {
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new_caret.style.backgroundColor = my_colour;
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}
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content.appendChild(new_caret);
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}
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function handle_input(event) {
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@ -109,38 +161,77 @@ function handle_input(event) {
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event.preventDefault();
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}
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if (event.key == "Backspace") {
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if (event.ctrlKey && send_buffer.length == 0) {
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const last_space = content.innerText.lastIndexOf(" ");
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const last_newline = content.innerText.lastIndexOf("\n");
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var break_at = last_space;
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if (last_newline > last_space) {
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break_at = last_newline;
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}
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const word_length = content.innerText.length - break_at;
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for (let i = 0; i < word_length; i++) {
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send_buffer += '\b';
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switch (event.key) {
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case "Backspace":
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if (event.ctrlKey) {
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if (send_buffer.length > 0) return;
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/*
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send_buffer.push({
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type: DATA_TYPES.backword,
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});
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*/
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var break_point = content.innerText.lastIndexOf(" ");
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const last_newline = content.innerText.lastIndexOf("\n");
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if (last_newline > break_point) break_point = last_newline;
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const count = content.innerText.length - break_point;
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for (var i = 0; i < count; i++) {
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send_buffer.push({
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type: DATA_TYPES.backspace,
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});
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}
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return;
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}
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send_buffer.push({
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type: DATA_TYPES.backspace,
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});
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return;
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case "Enter":
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send_buffer.push({
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type: DATA_TYPES.text,
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text: "\n",
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});
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return;
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case "ArrowUp":
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send_buffer.push({
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type: DATA_TYPES.arrow,
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dir: "up",
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});
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return;
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case "ArrowDown":
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send_buffer.push({
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type: DATA_TYPES.arrow,
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dir: "down",
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});
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return;
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case "ArrowLeft":
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send_buffer.push({
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type: DATA_TYPES.arrow,
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dir: "left",
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});
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return;
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case "ArrowRight":
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send_buffer.push({
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type: DATA_TYPES.arrow,
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dir: "right",
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});
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return;
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}
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send_buffer += '\b';
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return;
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}
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if (event.key == "Enter") {
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send_buffer += '\n';
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return;
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}
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if (event.key.length > 1) {
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// server will discard text over 1 character, anyway
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return;
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}
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if (event.ctrlKey) {
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return;
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}
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send_buffer += event.key;
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content.scrollTop = content.scrollHeight;
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send_buffer.push({
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type: DATA_TYPES.text,
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text: event.key,
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});
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content.scrollTop = content.scrollTopMax;
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}
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function handle_paste(event) {
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@ -151,8 +242,11 @@ function handle_paste(event) {
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}
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const paste = (event.clipboardData || window.clipboardData).getData("text");
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send_buffer += paste;
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content.scrollTop = content.scrollHeight;
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send_buffer.push({
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type: DATA_TYPES.text,
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text: paste,
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});
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content.scrollTop = content.scrollTopMax;
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}
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const PALETTE = {
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@ -28,16 +28,16 @@ pre#content {
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text-shadow: 0 0 1em, 0 0 3em;
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}
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div#carat {
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div#caret {
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width: .5em;
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height: .9em;
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display: inline-block;
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background: var(--colour);
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transform: translateY(1px);
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animation: linear .5s infinite forwards carat-blink;
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animation: linear .5s infinite forwards caret-blink;
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}
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@keyframes carat-blink {
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@keyframes caret-blink {
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from {
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opacity: 1;
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}
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113
server/main.js
113
server/main.js
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@ -20,7 +20,16 @@ const MIME_TYPES = {
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svg: "image/svg+xml",
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};
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const motds = [
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const DATA_TYPES = {
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text: 0,
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colour: 1,
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buffer: 2,
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backspace: 3,
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backword: 4,
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arrow: 5,
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};
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const MOTDS = [
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"hello, world!",
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"all your TTY are belong to us.",
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"TIP: got a linux system low on storage? try running `sudo rm -rf /`!",
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@ -46,7 +55,7 @@ let sockets = [];
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let buffer = "";
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const MAX_BUFFER_SIZE = 10240;
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const MAX_MESSAGE_LENGTH = 64;
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const MAX_MESSAGE_LENGTH = 1024;
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async function get_file(url) {
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const paths = [STATIC_PATH, url];
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@ -76,14 +85,31 @@ const server = https.createServer(config, async (req, res) => {
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const wss = new Websocket.Server({ server });
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wss.on('connection', socket => {
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socket.send(`${banner}/* ${motds[Math.floor(Math.random() * motds.length)]} */\n\n`);
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socket.send(buffer);
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/*
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socket.colour = generate_colour();
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socket.send(JSON.stringify({
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type: DATA_TYPES.colour,
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colour: socket.colour,
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}));
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*/
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socket.send(JSON.stringify({
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type: DATA_TYPES.text,
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text: `${banner}/* ${MOTDS[Math.floor(Math.random() * MOTDS.length)]} */\n\n`,
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colour: false,
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sticky: true,
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}));
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if (buffer) {
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socket.send(JSON.stringify({
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type: DATA_TYPES.buffer,
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data: buffer,
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}));
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}
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sockets.push(socket);
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// console.log(`new connection.\n\tcurrent connections: ${sockets.length}`);
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socket.on('message', handle_message);
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socket.on('message', event => { handle_message(JSON.parse(event), socket) });
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socket.on('close', () => {
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sockets = sockets.filter(s => s !== socket);
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@ -91,38 +117,69 @@ wss.on('connection', socket => {
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});
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});
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function handle_message(msg) {
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if (msg.length > MAX_MESSAGE_LENGTH) {
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return;
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}
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if (msg == '\b') {
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buffer = buffer.slice(0, buffer.length - 1);
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send_text('\b');
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return;
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} else if (buffer.length >= MAX_BUFFER_SIZE) {
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return;
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}
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if (msg == '\n') {
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buffer += '\n';
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send_text('\n');
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return;
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function handle_message(data, user) {
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switch (data.type) {
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case DATA_TYPES.backword:
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var break_point = buffer.lastIndexOf(" ");
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const last_newline = buffer.lastIndexOf("\n");
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if (last_newline > break_point) break_point = last_newline;
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buffer = buffer.substring(0, break_point);
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for (var i = 0; i < buffer.length - break_point; i++) {
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broadcast(JSON.stringify({
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type: DATA_TYPES.backspace,
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}));
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}
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case DATA_TYPES.backspace:
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buffer = buffer.substring(0, buffer.length - 1);
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broadcast(JSON.stringify({
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type: DATA_TYPES.backspace,
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}));
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return;
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case DATA_TYPES.text:
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if (buffer.length >= MAX_BUFFER_SIZE) {
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return;
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}
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if (data.text.length > MAX_MESSAGE_LENGTH) {
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return;
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}
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block = {
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type: DATA_TYPES.text,
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text: data.text,
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colour: user.colour,
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};
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buffer += data.text;
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broadcast(JSON.stringify(block));
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}
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buffer += msg.toString();
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send_text(msg.toString());
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/*
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if (buffer.length > MAX_BUFFER_SIZE) {
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buffer = buffer.slice(buffer.length - MAX_BUFFER_SIZE, buffer.length);
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send_as_server(`\n\nSERVER: This channel's maximum buffer length has been hit (${MAX_BUFFER_SIZE}).\n` +
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`You will need to make more room, or the server will have to be restarted.\n` +
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`Apologies for the inconvenience!`)
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}
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*/
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}
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function generate_colour() {
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let result = '#';
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let hexref = '0123456789abcdef';
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for (let i = 0; i < 6; i++) {
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result += hexref.charAt(Math.floor(Math.random() * hexref.length * .75) + 4);
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}
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return result;
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}
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server.listen(PORT, () => {
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console.log(`OpenTerminal is now LIVE on https://127.0.0.1:${PORT}!`);
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});
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function send_text(text) {
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sockets.forEach(s => s.send(text));
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function send_as_server(message) {
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broadcast(JSON.stringify({
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type: DATA_TYPES.text,
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text: message,
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colour: "#ffffff",
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}));
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}
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function broadcast(data) {
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sockets.forEach(s => s.send(data));
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}
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