group chat bugfixes
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d672692854
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180
index.js
180
index.js
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@ -38,6 +38,8 @@ function generatePartialID() {
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function userInactivity(name, id) {
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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 && new Date() - users[i].seen > 86400000) {
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// User with ID 'name#id' was inactive for longer than a day.
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if (consoleLogging)
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console.log(`Deleting user with ID '${name}#${id}' because of inactivity.`);
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@ -51,12 +53,16 @@ function userInactivity(name, id) {
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const users = [], chats = [];
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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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// Retrieve username
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const { name } = req.body;
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// Generate id in unique pattern 'name#id'
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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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// Save user data
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users.push({
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deletion: setInterval(
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()=>userInactivity(name, id),
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@ -66,24 +72,34 @@ app.post('/connect', (req, res) => {
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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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// Log connection
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if (consoleLogging)
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console.log(`User with ID '${name}#${id}' connected.`);
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// Respond with id
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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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// Retrieve user data
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const { name, id } = req.body;
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// Search for user in data
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for (let i = 0; i < users.length; i++)
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// If user was found, delete all of their data
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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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// Log disconnect
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if (consoleLogging)
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console.log(`User with ID '${name}#${id}' disconnected.`);
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// Delete user
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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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// Respond with id as confirmation
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res.status(200).send();
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});
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@ -94,33 +110,39 @@ app.get('/ping', (req, res) => {
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// User wants to change name
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app.post('/nickname', (req, res) => {
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// Retrieve user data and old name
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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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// Check if unique pattern 'name#id' is valid, generate new one
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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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// Find specified user
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for (const u of users)
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if (u.name === oldName && u.id === id) {
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// Log renaming
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if (consoleLogging)
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console.log(`(Re-)named user with ID '${oldName}#${id}'.`);
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// Save new name
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u.name = name;
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u.id = currentID;
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u.seen = new Date();
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break;
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}
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// Confirm renaming
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// Respond with confirmation
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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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// Retrieve user data and where to retrieve data from
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const { name, from, id } = req.body;
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// Save user activity
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for (const u of users)
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if (u.name === name && u.id === id) {
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u.seen = new Date();
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@ -128,17 +150,31 @@ app.post('/getChat', (req, res) => {
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}
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// Go through users' chats, retrieve messages, save by username
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let chats = {};
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let received = {};
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const fullName = `${name}#${id}`;
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for (const u of users)
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if (fullName in u.chats) {
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// User might have new message from another user
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const len = u.chats[fullName].length;
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if (len > 0 && from.includes(`${u.name}#${u.id}`))
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chats[`${u.name}#${u.id}`] = u.chats[fullName].splice(0, len);
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received[`${u.name}#${u.id}`] = u.chats[fullName].splice(0, len);
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}
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// Go through chats (Array of Objects)
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for (const c of chats)
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if (from.includes(c.name)) {
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const cusers = c.users[fullName];
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// Look through user data (Object with usernames as keys)
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for (const u in cusers) {
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// Retrieve messages from data (Array)
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const len = cusers[u].length;
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if (len > 0) received[u] = cusers[u].splice(0, len);
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}
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}
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// No chat messages were found
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if (Object.keys(chats).length === 0) {
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if (Object.keys(received).length === 0) {
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// Respond with no content
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res.status(204).send();
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return;
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}
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@ -147,27 +183,31 @@ app.post('/getChat', (req, res) => {
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if (consoleLogging)
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console.log(`Delivered messages to user with ID '${fullName}' from '${from}'.`);
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// Send back data
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res.status(200).json(chats);
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// Respond with data
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res.status(200).json(received);
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});
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// User sent new message
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app.post('/message', (req, res) => {
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// Retrieve user data, their message and where to deliver it to
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const { name, id, to, message } = req.body;
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// Search for senders' name, save message
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// Search for sender
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for (const u of users)
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if (u.name === name && u.id === id) {
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// Go through every recipient
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for (const recipient of to) {
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// Save message for recipient
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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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}
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// Save user activity
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u.seen = new Date();
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break;
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}
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// Log message for debugging
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// Log users' message
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if (consoleLogging)
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console.log(`User with ID '${name}#${id}' sent message '${message}' to '${to}'.`);
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@ -177,9 +217,11 @@ 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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// Log request
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if (consoleLogging)
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console.log('Some user requested all usernames + IDs.');
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// Respond with unique patterns 'name#id'
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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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@ -190,82 +232,126 @@ app.get('/getNames', (req, res) => {
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// User sends activity notification
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app.post('/activity', (req, res) => {
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// Retrieve user data
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const { name, id } = req.body;
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// Log activity
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if (consoleLogging)
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console.log(`User with ID '${name}#${id}' is online.`);
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// Save activity
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for (const u of users)
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if (u.name === name && u.id === id) {
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u.seen = new Date();
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break;
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}
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// Confirm process
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res.status(200).send();
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});
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// User asks if their data exists
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app.post('/login', (req, res) => {
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// Retrieve user data
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const { name, id } = req.body;
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// Log login
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if (consoleLogging)
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console.log(`Some user requested existence of '${name}#${id}'.`);
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// Go through users, success if user exists
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let success = false;
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for (const u of users)
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if (u.name === name && u.id === id) {
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success = true;
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// Save activity
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u.seen = new Date();
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break;
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}
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// Respond with status
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res.status(200).json({success});
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});
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// User wants to join chat
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app.post('/chatInit', (req, res) => {
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// Retrieve user data and chat name
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const { name, id, chat } = req.body;
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const fullName = `${name}#${id}`;
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let chatExists = false;
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for (const c of chats)
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if (c.name === chat) {
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chatExists = true;
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if (!c.users[fullName])
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c.users[fullName] = [];
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break;
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}
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if (!chatExists)
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chats.push({
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users: {},
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name: chat
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});
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// Log message for debugging
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if (consoleLogging)
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console.log(`User with ID '${name}#${id}' joined chat '${chat}'.`);
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res.status(200).send();
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});
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app.post('/sendGroup', (req, res) => {
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const { name, id, message, chat } = req.body;
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for (const c of chats)
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if (c.name === chat) {
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c.users[`${name}#${id}`].push(message);
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break;
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}
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// Save user activity
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for (const u of users)
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if (u.name === name && u.id === id) {
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u.seen = new Date();
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break;
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}
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// Log message for debugging
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// Check if chats already exist
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const fullName = `${name}#${id}`;
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let existance = chat.map(e => [e, false]);
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// Go through chats
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for (const c of chats)
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// Go through provided names
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for (const n of existance) {
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// If name is this chat
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if (n[0] === c.name) {
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// Chat exists, add user to it
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n[1] = true;
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if (!c.users[fullName])
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c.users[fullName] = {};
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break;
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}
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}
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// Go through provided names
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for (const n of existance) {
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// Chat didn't exist
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if (!n[1])
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// Create it and save user in it
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chats.push({
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users: {[fullName]: {}},
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name: n[0]
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});
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}
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// Log chat initialization
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if (consoleLogging)
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console.log(`User with ID '${name}#${id}' joined chat '${chat}'.`);
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// Confirm process
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res.status(200).send();
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});
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// User sends a message in chat
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app.post('/sendGroup', (req, res) => {
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// Retrieve user data and chat name and message
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const { name, id, message, chat } = req.body;
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// Save user activity
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for (const u of users)
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if (u.name === name && u.id === id) {
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u.seen = new Date();
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break;
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}
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// Find provided chat
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const fullName = `${name}#${id}`;
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for (const c of chats)
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if (chat.includes(c.name)) {
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// Go through users in chat
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for (const u in c.users)
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if (u !== fullName) {
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// Save message for recipient
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if (!c.users[u][fullName])
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c.users[u][fullName] = [];
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c.users[u][fullName].push(message);
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}
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}
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// Log users' message
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if (consoleLogging)
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console.log(`User with ID '${name}#${id}' sent message '${message}' in '${chat}'.`);
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// Confirm process
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res.status(200).send();
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});
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