changed from uuid + username to username + '#' + id
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27ff59e174
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0d9eabe32e
171
index.js
171
index.js
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@ -19,40 +19,6 @@ app.use(express.static(clientPath));
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const server = http.createServer(app);
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// User data
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const users = [];
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// Incoming user connection
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app.get('/connect', (req, res) => {
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// Generate id, save user
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const id = crypto.randomUUID();
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users.push({
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socket: req.socket,
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date: new Date(),
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chats: {},
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name: "",
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id
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});
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// Log connection, send back id
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if (consoleLogging)
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console.log(`User with ID '${id}' connected.`);
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res.status(200).json({ id });
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});
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// User has disconnected
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app.post('/disconnect', (req, res) => {
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const { id } = req.body;
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for (let i = 0; i < users.length; i++)
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if (users[i].id === id) {
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// If id is valid, delete all user data
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if (consoleLogging)
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console.log(`User with ID '${id}' disconnected.`);
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users.splice(i, 1);
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break;
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}
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// Confirm disconnect
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res.status(200).send();
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});
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// Check if string is already in array
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function isStringUnique(arr, str) {
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let match = true;
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@ -64,57 +30,86 @@ function isStringUnique(arr, str) {
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return match;
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}
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// Generate the partial ID after username
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function generatePartialID() {
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return Math.floor(Math.random()*10000).toString().padStart(4, '0');
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}
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// User data
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const users = [];
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// Incoming user connection
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app.post('/connect', (req, res) => {
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// Generate id, save user
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const { name } = req.body;
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let id = generatePartialID();
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const name_id = users.map(u => `${u.name}#${u.id}`);
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while (!isStringUnique(name_id, `${name}#${id}`))
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id = generatePartialID();
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users.push({
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socket: req.socket,
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date: new Date(),
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chats: {},
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name,
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id
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});
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// Log connection, send back id
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if (consoleLogging)
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console.log(`User with ID '${name}#${id}' connected.`);
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res.status(200).json({ id });
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});
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// User has disconnected
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app.post('/disconnect', (req, res) => {
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const { name, id } = req.body;
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for (let i = 0; i < users.length; i++)
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if (users[i].name === name && users[i].id === id) {
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// If id is valid, delete all user data
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if (consoleLogging)
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console.log(`User with ID '${name}#${id}' disconnected.`);
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users.splice(i, 1);
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break;
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}
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// Confirm disconnect
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res.status(200).send();
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});
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// User wants to change name
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app.post('/nickname', (req, res) => {
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const { id, name } = req.body;
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const { oldName, name, id } = req.body;
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// Check if name is taken, if not, append id until unique
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const usernames = users.map(u => u.name);
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let currentChar = 0, newname = name;
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while (!isStringUnique(usernames, newname)) {
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if (newname === name)
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newname += '_';
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newname += id.charAt(currentChar++);
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}
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const name_id = users.map(u => `${u.name}#${u.id}`);
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let currentID = id;
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while (!isStringUnique(name_id, `${name}#${currentID}`))
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currentID = generatePartialID();
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// Change username
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for (const u of users)
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if (u.id === id) {
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if (u.name === oldName && u.id === id) {
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if (consoleLogging)
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console.log(`(Re-)named user with ID '${id}'.`);
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u.name = newname;
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console.log(`(Re-)named user with ID '${oldName}#${id}'.`);
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u.name = name;
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u.id = currentID;
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break;
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}
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// Confirm renaming
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res.status(200).json({ name: newname });
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res.status(200).json({ id: currentID });
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});
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// User is pulling messages
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app.post('/getChat', (req, res) => {
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const { id } = req.body
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// Get users' name
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let name = "";
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for (const u of users)
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if (u.id === id) {
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name = u.name;
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break;
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}
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// If no name was found, user cannot send or receive messages
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if (name === "") {
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res.status(401).send();
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return;
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}
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const { name, id } = req.body;
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// Go through users' chats, retrieve messages, save by username
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let chats = {};
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const fullName = `${name}#${id}`;
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for (const u of users)
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if (name in u.chats) {
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const len = u.chats[name].length;
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if (fullName in u.chats) {
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const len = u.chats[fullName].length;
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if (len > 0)
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chats[u.name] = u.chats[name].splice(0, len);
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chats[`${u.name}#${u.id}`] = u.chats[fullName].splice(0, len);
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}
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// No chat messages were found
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@ -125,7 +120,7 @@ app.post('/getChat', (req, res) => {
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// Log if messages were delivered
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if (consoleLogging)
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console.log(`Delivered messages to user with ID '${id}'.`);
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console.log(`Delivered messages to user with ID '${fullName}'.`);
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// Send back data
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res.status(200).json(chats);
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@ -133,27 +128,20 @@ app.post('/getChat', (req, res) => {
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// User sent new message
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app.post('/message', (req, res) => {
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const { id, message, name } = req.body;
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const { name, id, recipient, message } = req.body;
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// Search for senders' name, save message
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let ownName;
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for (const u of users)
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if (u.id === id) {
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ownName = u.name;
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if (!u.chats[name])
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u.chats[name] = [];
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u.chats[name].push(message);
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if (u.name === name && u.id === id) {
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if (!u.chats[recipient])
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u.chats[recipient] = [];
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u.chats[recipient].push(message);
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break;
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}
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// Log message for debugging
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let user = `User '${ownName}'`;
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if (!ownName)
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user = ownName = "Anonymous"
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if (consoleLogging) {
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const idStr = (!ownName) ? ` ID: ${id}.` : '';
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console.log(`${user} sent message '${message}'.${idStr}`);
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}
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if (consoleLogging)
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console.log(`User '${name}#${id}' sent message '${message}'.`);
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// Confirm process
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res.status(200).send();
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@ -162,25 +150,14 @@ app.post('/message', (req, res) => {
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// User requesting all names
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app.get('/getNames', (req, res) => {
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if (consoleLogging)
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console.log('User requested all names.');
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console.log('Some user requested all names.');
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let names = [{name: "Anonymous", id: "0"}];
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for (const u of users) {
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if (u.name === "") {
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names[0].id = (parseInt(names[0].id) + 1).toString();
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continue;
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}
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names.push({
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id: u.id,
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name: u.name
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});
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}
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if (names[0].id === "0")
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names.splice(0, 1);
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else
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names[0].id = `${names[0].id} time(/-s)`;
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res.status(200).json(names);
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res.status(200).json(users.map(u => {
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return {
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name: u.name,
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id: u.id
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};
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}));
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});
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// Internal server error
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