diff --git a/.eslintrc.js b/.eslintrc.js
index f44c7a1df..c98f83ccb 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -1,10 +1,11 @@
module.exports = {
extends: '@mate-academy/eslint-config',
+ ignorePatterns: ['src/frontend/**'],
env: {
- jest: true
+ jest: true,
},
rules: {
- 'no-proto': 0
+ 'no-proto': 0,
},
- plugins: ['jest']
+ plugins: ['jest'],
};
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index bb13dfc45..2b6248a98 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,4 +20,5 @@ jobs:
with:
node-version: ${{ matrix.node-version }}
- run: npm install
+ - run: npm --prefix src/frontend install
- run: npm test
diff --git a/.github/workflows/test.yml-template b/.github/workflows/test.yml-template
new file mode 100644
index 000000000..2b6248a98
--- /dev/null
+++ b/.github/workflows/test.yml-template
@@ -0,0 +1,24 @@
+name: Test
+
+on:
+ pull_request:
+ branches: [ master ]
+
+jobs:
+ build:
+
+ runs-on: ubuntu-latest
+
+ strategy:
+ matrix:
+ node-version: [20.x]
+
+ steps:
+ - uses: actions/checkout@v2
+ - name: Use Node.js ${{ matrix.node-version }}
+ uses: actions/setup-node@v1
+ with:
+ node-version: ${{ matrix.node-version }}
+ - run: npm install
+ - run: npm --prefix src/frontend install
+ - run: npm test
diff --git a/.gitignore b/.gitignore
index bd6a178a8..ea681931d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@
# Node
node_modules
-
+.env
+.env.*
# MacOS
.DS_Store
diff --git a/.prettierignore b/.prettierignore
index 8225baa4a..d98b8e2d6 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -1,2 +1,3 @@
/node_modules
/dist
+src/frontend/dist
diff --git a/package-lock.json b/package-lock.json
index ce07e1dca..59f8413ad 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
"license": "GPL-3.0",
"devDependencies": {
"@mate-academy/eslint-config": "latest",
- "@mate-academy/scripts": "^1.8.6",
+ "@mate-academy/scripts": "^2.1.3",
"eslint": "^8.57.0",
"eslint-plugin-jest": "^28.6.0",
"eslint-plugin-node": "^11.1.0",
@@ -59,6 +59,7 @@
"resolved": "https://registry.npmjs.org/@babel/core/-/core-7.24.9.tgz",
"integrity": "sha512-5e3FI4Q3M3Pbr21+5xJwCv6ZT6KmGkI0vw3Tozy5ODAQFTIWe37iT8Cr7Ice2Ntb+M3iSKCEWMB1MBgKrW3whg==",
"dev": true,
+ "peer": true,
"dependencies": {
"@ampproject/remapping": "^2.2.0",
"@babel/code-frame": "^7.24.7",
@@ -1467,10 +1468,11 @@
}
},
"node_modules/@mate-academy/scripts": {
- "version": "1.8.6",
- "resolved": "https://registry.npmjs.org/@mate-academy/scripts/-/scripts-1.8.6.tgz",
- "integrity": "sha512-b4om/whj4G9emyi84ORE3FRZzCRwRIesr8tJHXa8EvJdOaAPDpzcJ8A0sFfMsWH9NUOVmOwkBtOXDu5eZZ00Ig==",
+ "version": "2.1.3",
+ "resolved": "https://registry.npmjs.org/@mate-academy/scripts/-/scripts-2.1.3.tgz",
+ "integrity": "sha512-a07wHTj/1QUK2Aac5zHad+sGw4rIvcNl5lJmJpAD7OxeSbnCdyI6RXUHwXhjF5MaVo9YHrJ0xVahyERS2IIyBQ==",
"dev": true,
+ "license": "MIT",
"dependencies": {
"@octokit/rest": "^17.11.2",
"@types/get-port": "^4.2.0",
@@ -1536,7 +1538,6 @@
"resolved": "https://registry.npmjs.org/@octokit/auth-token/-/auth-token-5.1.1.tgz",
"integrity": "sha512-rh3G3wDO8J9wSjfI436JUKzHIxq8NaiL0tVeB2aXmG6p/9859aUOAjA9pmSPNGGZxfwmaJ9ozOJImuNVJdpvbA==",
"dev": true,
- "peer": true,
"engines": {
"node": ">= 18"
}
@@ -1565,7 +1566,6 @@
"resolved": "https://registry.npmjs.org/@octokit/endpoint/-/endpoint-10.1.1.tgz",
"integrity": "sha512-JYjh5rMOwXMJyUpj028cu0Gbp7qe/ihxfJMLc8VZBMMqSwLgOxDI1911gV4Enl1QSavAQNJcwmwBF9M0VvLh6Q==",
"dev": true,
- "peer": true,
"dependencies": {
"@octokit/types": "^13.0.0",
"universal-user-agent": "^7.0.2"
@@ -1579,7 +1579,6 @@
"resolved": "https://registry.npmjs.org/@octokit/graphql/-/graphql-8.1.1.tgz",
"integrity": "sha512-ukiRmuHTi6ebQx/HFRCXKbDlOh/7xEV6QUXaE7MJEKGNAncGI/STSbOkl12qVXZrfZdpXctx5O9X1AIaebiDBg==",
"dev": true,
- "peer": true,
"dependencies": {
"@octokit/request": "^9.0.0",
"@octokit/types": "^13.0.0",
@@ -1593,8 +1592,7 @@
"version": "22.2.0",
"resolved": "https://registry.npmjs.org/@octokit/openapi-types/-/openapi-types-22.2.0.tgz",
"integrity": "sha512-QBhVjcUa9W7Wwhm6DBFu6ZZ+1/t/oYxqc2tp81Pi41YNuJinbFRx8B133qVOrAaBbF7D/m0Et6f9/pZt9Rc+tg==",
- "dev": true,
- "peer": true
+ "dev": true
},
"node_modules/@octokit/plugin-paginate-rest": {
"version": "2.21.3",
@@ -1656,7 +1654,6 @@
"resolved": "https://registry.npmjs.org/@octokit/request/-/request-9.1.3.tgz",
"integrity": "sha512-V+TFhu5fdF3K58rs1pGUJIDH5RZLbZm5BI+MNF+6o/ssFNT4vWlCh/tVpF3NxGtP15HUxTTMUbsG5llAuU2CZA==",
"dev": true,
- "peer": true,
"dependencies": {
"@octokit/endpoint": "^10.0.0",
"@octokit/request-error": "^6.0.1",
@@ -1672,7 +1669,6 @@
"resolved": "https://registry.npmjs.org/@octokit/request-error/-/request-error-6.1.4.tgz",
"integrity": "sha512-VpAhIUxwhWZQImo/dWAN/NpPqqojR6PSLgLYAituLM6U+ddx9hCioFGwBr5Mi+oi5CLeJkcAs3gJ0PYYzU6wUg==",
"dev": true,
- "peer": true,
"dependencies": {
"@octokit/types": "^13.0.0"
},
@@ -1860,7 +1856,6 @@
"resolved": "https://registry.npmjs.org/@octokit/types/-/types-13.5.0.tgz",
"integrity": "sha512-HdqWTf5Z3qwDVlzCrP8UJquMwunpDiMPt5er+QjGzL4hqr/vBVY/MauQgS1xWxCDT1oMx1EULyqxncdCY/NVSQ==",
"dev": true,
- "peer": true,
"dependencies": {
"@octokit/openapi-types": "^22.2.0"
}
@@ -2203,6 +2198,7 @@
"resolved": "https://registry.npmjs.org/acorn/-/acorn-8.12.1.tgz",
"integrity": "sha512-tcpGyI9zbizT9JbV6oYE477V6mTlXvvi0T0G3SNIYE2apm/G5huBa1+K89VGeovbg+jycCrfhl3ADxErOuO6Jg==",
"dev": true,
+ "peer": true,
"bin": {
"acorn": "bin/acorn"
},
@@ -2624,8 +2620,7 @@
"version": "3.0.2",
"resolved": "https://registry.npmjs.org/before-after-hook/-/before-after-hook-3.0.2.tgz",
"integrity": "sha512-Nik3Sc0ncrMK4UUdXQmAnRtzmNQTAAXmXIopizwZ1W1t8QmfJj+zL4OA2I7XPTPW5z5TDqv4hRo/JzouDJnX3A==",
- "dev": true,
- "peer": true
+ "dev": true
},
"node_modules/brace-expansion": {
"version": "1.1.11",
@@ -2668,6 +2663,7 @@
"url": "https://github.com/sponsors/ai"
}
],
+ "peer": true,
"dependencies": {
"caniuse-lite": "^1.0.30001640",
"electron-to-chromium": "^1.4.820",
@@ -3381,6 +3377,7 @@
"resolved": "https://registry.npmjs.org/eslint/-/eslint-8.57.0.tgz",
"integrity": "sha512-dZ6+mexnaTIbSBZWgou51U6OmzIhYM2VcNdtiTtI7qPNZm35Akpr0f6vtw3w1Kmn5PYo+tZVfh13WrhpS6oLqQ==",
"dev": true,
+ "peer": true,
"dependencies": {
"@eslint-community/eslint-utils": "^4.2.0",
"@eslint-community/regexpp": "^4.6.1",
@@ -3436,6 +3433,7 @@
"resolved": "https://registry.npmjs.org/eslint-config-prettier/-/eslint-config-prettier-9.1.0.tgz",
"integrity": "sha512-NSWl5BFQWEPi1j4TjVNItzYV7dZXZ+wP6I6ZhrBGpChQhZRUaElihE9uRRkcbRnNb76UMKDF3r+WTmNcGPKsqw==",
"dev": true,
+ "peer": true,
"bin": {
"eslint-config-prettier": "bin/cli.js"
},
@@ -3526,6 +3524,7 @@
"resolved": "https://registry.npmjs.org/eslint-plugin-import/-/eslint-plugin-import-2.29.1.tgz",
"integrity": "sha512-BbPC0cuExzhiMo4Ff1BTVwHpjjv28C5R+btTOGaCRC7UEz801up0JadwkeSk5Ued6TG34uaczuVuH6qyy5YUxw==",
"dev": true,
+ "peer": true,
"dependencies": {
"array-includes": "^3.1.7",
"array.prototype.findlastindex": "^1.2.3",
@@ -3603,6 +3602,7 @@
"resolved": "https://registry.npmjs.org/eslint-plugin-node/-/eslint-plugin-node-11.1.0.tgz",
"integrity": "sha512-oUwtPJ1W0SKD0Tr+wqu92c5xuCeQqB3hSCHasn/ZgjFdA9iDGNkNf2Zi9ztY7X+hNuMib23LNGRm6+uN+KLE3g==",
"dev": true,
+ "peer": true,
"dependencies": {
"eslint-plugin-es": "^3.0.0",
"eslint-utils": "^2.0.0",
@@ -3653,6 +3653,7 @@
"resolved": "https://registry.npmjs.org/eslint-plugin-promise/-/eslint-plugin-promise-4.3.1.tgz",
"integrity": "sha512-bY2sGqyptzFBDLh/GMbAxfdJC+b0f23ME63FOE4+Jao0oZ3E1LEwFtWJX/1pGMJLiTtrSSern2CRM/g+dfc0eQ==",
"dev": true,
+ "peer": true,
"engines": {
"node": ">=6"
}
@@ -3676,6 +3677,7 @@
"url": "https://feross.org/support"
}
],
+ "peer": true,
"peerDependencies": {
"eslint": ">=5.0.0"
}
@@ -5044,6 +5046,7 @@
"resolved": "https://registry.npmjs.org/jest/-/jest-29.7.0.tgz",
"integrity": "sha512-NIy3oAFp9shda19hy4HK0HRTWKtPJmGdnvywu01nOqNC2vZg+Z+fvJDxpMQA88eb2I9EcafcdjYgsDthnYTvGw==",
"dev": true,
+ "peer": true,
"dependencies": {
"@jest/core": "^29.7.0",
"@jest/types": "^29.6.3",
@@ -7376,6 +7379,7 @@
"resolved": "https://registry.npmjs.org/prettier/-/prettier-3.3.3.tgz",
"integrity": "sha512-i2tDNA0O5IrMO757lfrdQZCc2jPNDVntV0m/+4whiDfWaTKfMNgR7Qz0NAeGz/nRqF4m5/6CLzbP4/liHt12Ew==",
"dev": true,
+ "peer": true,
"bin": {
"prettier": "bin/prettier.cjs"
},
@@ -8307,8 +8311,7 @@
"version": "7.0.2",
"resolved": "https://registry.npmjs.org/universal-user-agent/-/universal-user-agent-7.0.2.tgz",
"integrity": "sha512-0JCqzSKnStlRRQfCdowvqy3cy0Dvtlb8xecj/H8JFZuCze4rwjPZQOgvFvn0Ws/usCHQFGpyr+pB9adaGwXn4Q==",
- "dev": true,
- "peer": true
+ "dev": true
},
"node_modules/universalify": {
"version": "2.0.1",
diff --git a/package.json b/package.json
index 4f64337fe..3a5bd92e9 100644
--- a/package.json
+++ b/package.json
@@ -4,10 +4,11 @@
"description": "Chat using Node.js",
"main": "src/index.js",
"scripts": {
+ "backend": "npm --prefix src/backend start",
"init": "mate-scripts init",
- "start": "node src/index.js",
- "lint": "npm run format && mate-scripts lint",
- "format": "prettier --ignore-path .prettierignore --write './src/**/*.{js,ts}'",
+ "start": "npm run backend",
+ "lint": "npm run format && mate-scripts lint --javascript ./src/backend ./src/index.js && npm --prefix src/frontend run lint",
+ "format": "prettier --ignore-path .prettierignore --write './src/**/*.{js,ts,tsx}'",
"test:only": "mate-scripts test",
"update": "mate-scripts update",
"postinstall": "npm run update",
@@ -17,7 +18,7 @@
"license": "GPL-3.0",
"devDependencies": {
"@mate-academy/eslint-config": "latest",
- "@mate-academy/scripts": "^1.8.6",
+ "@mate-academy/scripts": "^2.1.3",
"eslint": "^8.57.0",
"eslint-plugin-jest": "^28.6.0",
"eslint-plugin-node": "^11.1.0",
diff --git a/readme.md b/readme.md
index 951399fac..e1790110a 100644
--- a/readme.md
+++ b/readme.md
@@ -1,4 +1,4 @@
-# Chat (with Node.js)
+# Chat (with Node.js)
Implement a chat application (both client and server)
- You type a username and send it to the server
@@ -7,4 +7,24 @@ Implement a chat application (both client and server)
- Implement an ability to create rooms (create / rename / join / delete)
- New user should see all prev messages in the room
+## Run locally
+
+```bash
+npm install
+npm --prefix src/backend install
+npm --prefix src/frontend install
+```
+
+Start the backend server:
+
+```bash
+npm run backend
+```
+
+Start the frontend:
+
+```bash
+npm --prefix src/frontend run dev
+```
+
**Read [the guideline](https://github.com/mate-academy/js_task-guideline/blob/master/README.md) before start**
diff --git a/src/backend/app.js b/src/backend/app.js
new file mode 100644
index 000000000..c8e838435
--- /dev/null
+++ b/src/backend/app.js
@@ -0,0 +1,19 @@
+'use strict';
+
+const express = require('express');
+const authRoutes = require('./routes/authRoutes');
+const errorHandler = require('./middleware/errorHandler');
+
+function createApp() {
+ const app = express();
+
+ app.use(express.json());
+ app.use('/api', authRoutes);
+ app.use(errorHandler);
+
+ return app;
+}
+
+module.exports = {
+ createApp,
+};
diff --git a/src/backend/config/env.js b/src/backend/config/env.js
new file mode 100644
index 000000000..1f330d684
--- /dev/null
+++ b/src/backend/config/env.js
@@ -0,0 +1,29 @@
+/* eslint-disable indent */
+'use strict';
+
+const path = require('path');
+const fs = require('fs');
+
+const envPath =
+ [
+ path.resolve(__dirname, '..', '.env'),
+ path.resolve(__dirname, '..', '..', 'server', '.env'),
+ path.resolve(__dirname, '..', '..', '..', 'server', '.env'),
+ ].find((filePath) => fs.existsSync(filePath)) ||
+ path.resolve(__dirname, '..', '.env');
+
+require('dotenv').config({
+ path: envPath,
+ quiet: true,
+});
+
+const databaseUrl =
+ process.env.DATABASE_URL || 'postgresql://localhost:5432/node_chat';
+
+const shouldUseSsl =
+ databaseUrl.includes('sslmode=require') || databaseUrl.includes('neon.tech');
+
+module.exports = {
+ databaseUrl,
+ shouldUseSsl,
+};
diff --git a/src/backend/database/connect.js b/src/backend/database/connect.js
new file mode 100644
index 000000000..888a39b32
--- /dev/null
+++ b/src/backend/database/connect.js
@@ -0,0 +1,65 @@
+'use strict';
+
+const { DataTypes } = require('sequelize');
+const sequelize = require('./sequelize');
+
+require('../models');
+
+async function connectDatabase() {
+ if (!process.env.DATABASE_URL) {
+ throw new Error(
+ [
+ 'DATABASE_URL is required in src/backend/.env',
+ 'src/server/.env',
+ 'or server/.env',
+ ].join(', '),
+ );
+ }
+
+ await sequelize.authenticate();
+ await sequelize.sync();
+
+ // interact with the database schema
+ const queryInterface = sequelize.getQueryInterface();
+
+ const roomColumns = await queryInterface.describeTable('rooms');
+
+ // Add creator_username column if it doesn't exist
+ if (!roomColumns.creator_username) {
+ await queryInterface.addColumn('rooms', 'creator_username', {
+ type: DataTypes.STRING(80),
+ allowNull: true,
+ });
+ }
+
+ // Add creator_username_key column if it doesn't exist
+ if (!roomColumns.creator_username_key) {
+ await queryInterface.addColumn('rooms', 'creator_username_key', {
+ type: DataTypes.STRING(80),
+ allowNull: true,
+ });
+ }
+
+ if (!roomColumns.owner_user_id) {
+ await queryInterface.addColumn('rooms', 'owner_user_id', {
+ type: DataTypes.INTEGER,
+ allowNull: true,
+ references: {
+ model: 'users',
+ key: 'id',
+ },
+ onDelete: 'SET NULL',
+ onUpdate: 'CASCADE',
+ });
+ }
+
+ await sequelize.query(`
+ UPDATE rooms
+ SET owner_user_id = users.id
+ FROM users
+ WHERE rooms.owner_user_id IS NULL
+ AND rooms.creator_username_key = users.username_key
+ `);
+}
+
+module.exports = connectDatabase;
diff --git a/src/backend/database/index.js b/src/backend/database/index.js
new file mode 100644
index 000000000..fd46871d0
--- /dev/null
+++ b/src/backend/database/index.js
@@ -0,0 +1,14 @@
+'use strict';
+
+const sequelize = require('./sequelize');
+const connectDatabase = require('./connect');
+const { User, Room, Message, RoomMember } = require('../models');
+
+module.exports = {
+ sequelize,
+ connectDatabase,
+ User,
+ Room,
+ Message,
+ RoomMember,
+};
diff --git a/src/backend/database/sequelize.js b/src/backend/database/sequelize.js
new file mode 100644
index 000000000..c5d65b753
--- /dev/null
+++ b/src/backend/database/sequelize.js
@@ -0,0 +1,24 @@
+'use strict';
+
+const { Sequelize } = require('sequelize');
+const { databaseUrl, shouldUseSsl } = require('../config/env');
+
+const dialectOptions = {};
+
+if (shouldUseSsl) {
+ dialectOptions.ssl = {
+ require: true,
+ rejectUnauthorized: false,
+ };
+}
+
+const sequelize = new Sequelize(databaseUrl, {
+ dialect: 'postgres',
+ logging: false,
+ define: {
+ underscored: true,
+ },
+ dialectOptions,
+});
+
+module.exports = sequelize;
diff --git a/src/backend/middleware/asyncRoute.js b/src/backend/middleware/asyncRoute.js
new file mode 100644
index 000000000..29b5f7e23
--- /dev/null
+++ b/src/backend/middleware/asyncRoute.js
@@ -0,0 +1,9 @@
+'use strict';
+
+function asyncRoute(handler) {
+ return (req, res, next) => {
+ Promise.resolve(handler(req, res, next)).catch(next);
+ };
+}
+
+module.exports = asyncRoute;
diff --git a/src/backend/middleware/errorHandler.js b/src/backend/middleware/errorHandler.js
new file mode 100644
index 000000000..b79937ec7
--- /dev/null
+++ b/src/backend/middleware/errorHandler.js
@@ -0,0 +1,16 @@
+'use strict';
+
+function errorHandler(error, req, res, next) {
+ if (res.headersSent) {
+ return next(error);
+ }
+
+ // eslint-disable-next-line no-console
+ console.error(error);
+
+ return res.status(500).json({
+ message: 'Internal server error.',
+ });
+}
+
+module.exports = errorHandler;
diff --git a/src/backend/models/Message.js b/src/backend/models/Message.js
new file mode 100644
index 000000000..3de930bdc
--- /dev/null
+++ b/src/backend/models/Message.js
@@ -0,0 +1,19 @@
+'use strict';
+
+const { DataTypes } = require('sequelize');
+const sequelize = require('../database/sequelize');
+
+const Message = sequelize.define(
+ 'Message',
+ {
+ body: {
+ type: DataTypes.TEXT,
+ allowNull: false,
+ },
+ },
+ {
+ tableName: 'messages',
+ },
+);
+
+module.exports = Message;
diff --git a/src/backend/models/Room.js b/src/backend/models/Room.js
new file mode 100644
index 000000000..3fe5b9801
--- /dev/null
+++ b/src/backend/models/Room.js
@@ -0,0 +1,36 @@
+'use strict';
+
+const { DataTypes } = require('sequelize');
+const sequelize = require('../database/sequelize');
+
+const Room = sequelize.define(
+ 'Room',
+ {
+ name: {
+ type: DataTypes.STRING(120),
+ allowNull: false,
+ },
+ roomKey: {
+ type: DataTypes.STRING(120),
+ allowNull: false,
+ unique: true,
+ },
+ creatorUsername: {
+ type: DataTypes.STRING(80),
+ allowNull: true,
+ },
+ creatorUsernameKey: {
+ type: DataTypes.STRING(80),
+ allowNull: true,
+ },
+ ownerUserId: {
+ type: DataTypes.INTEGER,
+ allowNull: true,
+ },
+ },
+ {
+ tableName: 'rooms',
+ },
+);
+
+module.exports = Room;
diff --git a/src/backend/models/RoomMember.js b/src/backend/models/RoomMember.js
new file mode 100644
index 000000000..a7da64241
--- /dev/null
+++ b/src/backend/models/RoomMember.js
@@ -0,0 +1,13 @@
+'use strict';
+
+const sequelize = require('../database/sequelize');
+
+const RoomMember = sequelize.define(
+ 'RoomMember',
+ {},
+ {
+ tableName: 'room_members',
+ },
+);
+
+module.exports = RoomMember;
diff --git a/src/backend/models/User.js b/src/backend/models/User.js
new file mode 100644
index 000000000..e58df5194
--- /dev/null
+++ b/src/backend/models/User.js
@@ -0,0 +1,24 @@
+'use strict';
+
+const { DataTypes } = require('sequelize');
+const sequelize = require('../database/sequelize');
+
+const User = sequelize.define(
+ 'User',
+ {
+ username: {
+ type: DataTypes.STRING(80),
+ allowNull: false,
+ },
+ usernameKey: {
+ type: DataTypes.STRING(80),
+ allowNull: false,
+ unique: true,
+ },
+ },
+ {
+ tableName: 'users',
+ },
+);
+
+module.exports = User;
diff --git a/src/backend/models/associations.js b/src/backend/models/associations.js
new file mode 100644
index 000000000..b24f24ae8
--- /dev/null
+++ b/src/backend/models/associations.js
@@ -0,0 +1,80 @@
+'use strict';
+
+const User = require('./User');
+const Room = require('./Room');
+const Message = require('./Message');
+const RoomMember = require('./RoomMember');
+
+Room.belongsToMany(User, {
+ through: RoomMember,
+ as: 'members',
+ foreignKey: 'roomId',
+ otherKey: 'userId',
+ onDelete: 'CASCADE',
+});
+
+User.belongsToMany(Room, {
+ through: RoomMember,
+ as: 'rooms',
+ foreignKey: 'userId',
+ otherKey: 'roomId',
+ onDelete: 'CASCADE',
+});
+
+User.hasMany(Room, {
+ as: 'ownedRooms',
+ foreignKey: {
+ allowNull: true,
+ name: 'ownerUserId',
+ },
+ onDelete: 'SET NULL',
+});
+
+Room.belongsTo(User, {
+ as: 'owner',
+ foreignKey: {
+ allowNull: true,
+ name: 'ownerUserId',
+ },
+});
+
+Room.hasMany(Message, {
+ as: 'messages',
+ foreignKey: {
+ allowNull: false,
+ name: 'roomId',
+ },
+ onDelete: 'CASCADE',
+});
+
+Message.belongsTo(Room, {
+ as: 'room',
+ foreignKey: {
+ allowNull: false,
+ name: 'roomId',
+ },
+});
+
+User.hasMany(Message, {
+ as: 'messages',
+ foreignKey: {
+ allowNull: false,
+ name: 'userId',
+ },
+ onDelete: 'CASCADE',
+});
+
+Message.belongsTo(User, {
+ as: 'author',
+ foreignKey: {
+ allowNull: false,
+ name: 'userId',
+ },
+});
+
+module.exports = {
+ User,
+ Room,
+ Message,
+ RoomMember,
+};
diff --git a/src/backend/models/index.js b/src/backend/models/index.js
new file mode 100644
index 000000000..ed27f5064
--- /dev/null
+++ b/src/backend/models/index.js
@@ -0,0 +1,10 @@
+'use strict';
+
+const { User, Room, Message, RoomMember } = require('./associations');
+
+module.exports = {
+ User,
+ Room,
+ Message,
+ RoomMember,
+};
diff --git a/src/backend/package-lock.json b/src/backend/package-lock.json
new file mode 100644
index 000000000..b6dab154b
--- /dev/null
+++ b/src/backend/package-lock.json
@@ -0,0 +1,1251 @@
+{
+ "name": "node-chat-backend",
+ "version": "1.0.0",
+ "lockfileVersion": 3,
+ "requires": true,
+ "packages": {
+ "": {
+ "name": "node-chat-backend",
+ "version": "1.0.0",
+ "dependencies": {
+ "dotenv": "^17.4.2",
+ "express": "^4.18.3",
+ "pg": "^8.20.0",
+ "sequelize": "^6.37.8",
+ "ws": "^8.20.0"
+ }
+ },
+ "node_modules/@types/debug": {
+ "version": "4.1.13",
+ "resolved": "https://registry.npmjs.org/@types/debug/-/debug-4.1.13.tgz",
+ "integrity": "sha512-KSVgmQmzMwPlmtljOomayoR89W4FynCAi3E8PPs7vmDVPe84hT+vGPKkJfThkmXs0x0jAaa9U8uW8bbfyS2fWw==",
+ "license": "MIT",
+ "dependencies": {
+ "@types/ms": "*"
+ }
+ },
+ "node_modules/@types/ms": {
+ "version": "2.1.0",
+ "resolved": "https://registry.npmjs.org/@types/ms/-/ms-2.1.0.tgz",
+ "integrity": "sha512-GsCCIZDE/p3i96vtEqx+7dBUGXrc7zeSK3wwPHIaRThS+9OhWIXRqzs4d6k1SVU8g91DrNRWxWUGhp5KXQb2VA==",
+ "license": "MIT"
+ },
+ "node_modules/@types/node": {
+ "version": "25.6.0",
+ "resolved": "https://registry.npmjs.org/@types/node/-/node-25.6.0.tgz",
+ "integrity": "sha512-+qIYRKdNYJwY3vRCZMdJbPLJAtGjQBudzZzdzwQYkEPQd+PJGixUL5QfvCLDaULoLv+RhT3LDkwEfKaAkgSmNQ==",
+ "license": "MIT",
+ "dependencies": {
+ "undici-types": "~7.19.0"
+ }
+ },
+ "node_modules/@types/validator": {
+ "version": "13.15.10",
+ "resolved": "https://registry.npmjs.org/@types/validator/-/validator-13.15.10.tgz",
+ "integrity": "sha512-T8L6i7wCuyoK8A/ZeLYt1+q0ty3Zb9+qbSSvrIVitzT3YjZqkTZ40IbRsPanlB4h1QB3JVL1SYCdR6ngtFYcuA==",
+ "license": "MIT"
+ },
+ "node_modules/accepts": {
+ "version": "1.3.8",
+ "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz",
+ "integrity": "sha512-PYAthTa2m2VKxuvSD3DPC/Gy+U+sOA1LAuT8mkmRuvw+NACSaeXEQ+NHcVF7rONl6qcaxV3Uuemwawk+7+SJLw==",
+ "license": "MIT",
+ "dependencies": {
+ "mime-types": "~2.1.34",
+ "negotiator": "0.6.3"
+ },
+ "engines": {
+ "node": ">= 0.6"
+ }
+ },
+ "node_modules/array-flatten": {
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+ "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+ "integrity": "sha512-PCVAQswWemu6UdxsDFFX/+gVeYqKAod3D3UVm91jHwynguOwAvYPhx8nNlM++NqRcK6CxxpUafjmhIdKiHibqg==",
+ "license": "MIT"
+ },
+ "node_modules/body-parser": {
+ "version": "1.20.5",
+ "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.20.5.tgz",
+ "integrity": "sha512-3grm+/2tUOvu2cjJkvsIxrv/wVpfXQW4PsQHYm7yk4vfpu7Ekl6nEsYBoJUL6qDwZUx8wUhQ8tR2qz+ad9c9OA==",
+ "license": "MIT",
+ "dependencies": {
+ "bytes": "~3.1.2",
+ "content-type": "~1.0.5",
+ "debug": "2.6.9",
+ "depd": "2.0.0",
+ "destroy": "~1.2.0",
+ "http-errors": "~2.0.1",
+ "iconv-lite": "~0.4.24",
+ "on-finished": "~2.4.1",
+ "qs": "~6.15.1",
+ "raw-body": "~2.5.3",
+ "type-is": "~1.6.18",
+ "unpipe": "~1.0.0"
+ },
+ "engines": {
+ "node": ">= 0.8",
+ "npm": "1.2.8000 || >= 1.4.16"
+ }
+ },
+ "node_modules/body-parser/node_modules/qs": {
+ "version": "6.15.1",
+ "resolved": "https://registry.npmjs.org/qs/-/qs-6.15.1.tgz",
+ "integrity": "sha512-6YHEFRL9mfgcAvql/XhwTvf5jKcOiiupt2FiJxHkiX1z4j7WL8J/jRHYLluORvc1XxB5rV20KoeK00gVJamspg==",
+ "license": "BSD-3-Clause",
+ "dependencies": {
+ "side-channel": "^1.1.0"
+ },
+ "engines": {
+ "node": ">=0.6"
+ },
+ "funding": {
+ "url": "https://github.com/sponsors/ljharb"
+ }
+ },
+ "node_modules/bytes": {
+ "version": "3.1.2",
+ "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
+ "integrity": "sha512-/Nf7TyzTx6S3yRJObOAV7956r8cr2+Oj8AC5dt8wSP3BQAoeX58NoHyCU8P8zGkNXStjTSi6fzO6F0pBdcYbEg==",
+ "license": "MIT",
+ "engines": {
+ "node": ">= 0.8"
+ }
+ },
+ "node_modules/call-bind-apply-helpers": {
+ "version": "1.0.2",
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+ "license": "MIT",
+ "dependencies": {
+ "es-errors": "^1.3.0",
+ "function-bind": "^1.1.2"
+ },
+ "engines": {
+ "node": ">= 0.4"
+ }
+ },
+ "node_modules/call-bound": {
+ "version": "1.0.4",
+ "resolved": "https://registry.npmjs.org/call-bound/-/call-bound-1.0.4.tgz",
+ "integrity": "sha512-+ys997U96po4Kx/ABpBCqhA9EuxJaQWDQg7295H4hBphv3IZg0boBKuwYpt4YXp6MZ5AmZQnU/tyMTlRpaSejg==",
+ "license": "MIT",
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diff --git a/src/backend/package.json b/src/backend/package.json
new file mode 100644
index 000000000..a173310e8
--- /dev/null
+++ b/src/backend/package.json
@@ -0,0 +1,17 @@
+{
+ "name": "node-chat-backend",
+ "version": "1.0.0",
+ "private": true,
+ "main": "server.js",
+ "scripts": {
+ "start": "node server.js",
+ "dev": "node server.js"
+ },
+ "dependencies": {
+ "dotenv": "^17.4.2",
+ "express": "^4.18.3",
+ "pg": "^8.20.0",
+ "sequelize": "^6.37.8",
+ "ws": "^8.20.0"
+ }
+}
diff --git a/src/backend/routes/authRoutes.js b/src/backend/routes/authRoutes.js
new file mode 100644
index 000000000..9ef844923
--- /dev/null
+++ b/src/backend/routes/authRoutes.js
@@ -0,0 +1,41 @@
+'use strict';
+
+const express = require('express');
+const { UniqueConstraintError } = require('sequelize');
+const { User } = require('../database');
+const asyncRoute = require('../middleware/asyncRoute');
+const { getUsernameKey } = require('../utils/names');
+
+const router = express.Router();
+
+router.post(
+ '/login',
+ asyncRoute(async (req, res) => {
+ const username = String(req.body.username || '').trim();
+
+ if (!username) {
+ return res.status(400).json({
+ message: 'Username is required.',
+ });
+ }
+
+ try {
+ await User.create({
+ username,
+ usernameKey: getUsernameKey(username),
+ });
+ } catch (error) {
+ if (error instanceof UniqueConstraintError) {
+ return res.status(409).json({
+ message: 'That name is already in use. Try another.',
+ });
+ }
+
+ throw error;
+ }
+
+ return res.status(201).json({ username });
+ }),
+);
+
+module.exports = router;
diff --git a/src/backend/serializers/chatSerializers.js b/src/backend/serializers/chatSerializers.js
new file mode 100644
index 000000000..e43f1d848
--- /dev/null
+++ b/src/backend/serializers/chatSerializers.js
@@ -0,0 +1,56 @@
+'use strict';
+
+const { User, Message } = require('../database');
+const { formatMessageDate, formatMessageTime } = require('../utils/time');
+
+function serializeMessage(message) {
+ return {
+ id: message.id,
+ author: message.author.username,
+ date: formatMessageDate(message.createdAt),
+ time: formatMessageTime(message.createdAt),
+ body: message.body,
+ };
+}
+
+async function serializeRoom(room, viewer) {
+ const [lastMessage, members, joined] = await Promise.all([
+ Message.findOne({
+ where: {
+ roomId: room.id,
+ },
+ include: [
+ {
+ model: User,
+ as: 'author',
+ attributes: ['username'],
+ },
+ ],
+ order: [
+ ['createdAt', 'DESC'],
+ ['id', 'DESC'],
+ ],
+ }),
+ room.countMembers(),
+ viewer ? room.hasMember(viewer) : false,
+ ]);
+
+ return {
+ name: room.name,
+ creatorUsername: room.creatorUsername || '',
+ creatorUsernameKey: room.creatorUsernameKey || '',
+ ownerUserId: room.ownerUserId,
+ members,
+ preview: lastMessage
+ ? `${lastMessage.author.username}: ${lastMessage.body}`
+ : '',
+ time: lastMessage ? formatMessageTime(lastMessage.createdAt) : '',
+ unread: 0,
+ joined,
+ };
+}
+
+module.exports = {
+ serializeMessage,
+ serializeRoom,
+};
diff --git a/src/backend/server.js b/src/backend/server.js
new file mode 100644
index 000000000..cd40c1355
--- /dev/null
+++ b/src/backend/server.js
@@ -0,0 +1,34 @@
+'use strict';
+
+const http = require('http');
+const { createApp } = require('./app');
+const { connectDatabase } = require('./database');
+const { createChatWebSocketServer } = require('./websocket/chatSocket');
+
+const app = createApp();
+const server = http.createServer(app);
+const port = process.env.PORT || 3001;
+
+async function start() {
+ try {
+ await connectDatabase();
+ createChatWebSocketServer(server);
+
+ server.listen(port, () => {
+ // eslint-disable-next-line no-console
+ console.log(`Chat backend is listening on port ${port}`);
+ });
+ } catch (error) {
+ // eslint-disable-next-line no-console
+ console.error('Unable to start chat backend:', error);
+ process.exit(1);
+ }
+}
+
+start();
+
+module.exports = {
+ app,
+ server,
+ start,
+};
diff --git a/src/backend/services/chatService.js b/src/backend/services/chatService.js
new file mode 100644
index 000000000..5fd5e29da
--- /dev/null
+++ b/src/backend/services/chatService.js
@@ -0,0 +1,325 @@
+'use strict';
+
+const { UniqueConstraintError } = require('sequelize');
+const { User, Room, RoomMember, Message } = require('../database');
+const {
+ serializeMessage,
+ serializeRoom,
+} = require('../serializers/chatSerializers');
+const {
+ getRoomKey,
+ getUsernameKey,
+ normalizeRoomName,
+} = require('../utils/names');
+
+class ChatError extends Error {
+ constructor(status, message) {
+ super(message);
+ this.name = 'ChatError';
+ this.status = status;
+ }
+}
+
+function getCleanUsername(username) {
+ return String(username || '').trim();
+}
+
+function sendRoomCreatorRequired() {
+ throw new ChatError(403, 'Only the room creator can change that room.');
+}
+
+async function findOrCreateUser(username) {
+ const cleanUsername = getCleanUsername(username);
+ const usernameKey = getUsernameKey(cleanUsername);
+ const [user] = await User.findOrCreate({
+ where: { usernameKey },
+ defaults: {
+ username: cleanUsername,
+ usernameKey,
+ },
+ });
+
+ return user;
+}
+
+async function findUserByUsername(username) {
+ if (!username) {
+ return null;
+ }
+
+ return User.findOne({
+ where: {
+ usernameKey: getUsernameKey(username),
+ },
+ });
+}
+
+async function findRoomByName(name) {
+ return Room.findOne({
+ where: {
+ roomKey: getRoomKey(name),
+ },
+ });
+}
+
+async function isRoomCreator(room, username) {
+ const user = await findUserByUsername(username);
+
+ return Boolean(
+ user &&
+ (room.ownerUserId === user.id ||
+ (room.creatorUsernameKey &&
+ room.creatorUsernameKey === user.usernameKey)),
+ );
+}
+
+async function ensureRoomMember(room, user) {
+ try {
+ await RoomMember.findOrCreate({
+ where: {
+ roomId: room.id,
+ userId: user.id,
+ },
+ });
+ } catch (error) {
+ if (!(error instanceof UniqueConstraintError)) {
+ throw error;
+ }
+ }
+}
+
+async function listRoomsForUser(username) {
+ const viewer = await findUserByUsername(getCleanUsername(username));
+ const rooms = await Room.findAll({
+ order: [
+ ['createdAt', 'ASC'],
+ ['id', 'ASC'],
+ ],
+ });
+
+ return Promise.all(rooms.map((room) => serializeRoom(room, viewer)));
+}
+
+async function createRoomForUser(name, username) {
+ const roomName = normalizeRoomName(name);
+ const cleanUsername = getCleanUsername(username);
+
+ if (!roomName) {
+ throw new ChatError(400, 'Room name is required.');
+ }
+
+ if (!cleanUsername) {
+ throw new ChatError(400, 'Room creator is required.');
+ }
+
+ const user = await findOrCreateUser(cleanUsername);
+ let room;
+
+ try {
+ room = await Room.create({
+ name: roomName,
+ roomKey: getRoomKey(roomName),
+ creatorUsername: user.username,
+ creatorUsernameKey: user.usernameKey,
+ ownerUserId: user.id,
+ });
+ } catch (error) {
+ if (error instanceof UniqueConstraintError) {
+ throw new ChatError(409, 'A room with that name already exists.');
+ }
+
+ throw error;
+ }
+
+ await ensureRoomMember(room, user);
+
+ return serializeRoom(room, user);
+}
+
+async function renameRoomForUser(name, nextName, username) {
+ const roomName = normalizeRoomName(name);
+ const cleanNextName = normalizeRoomName(nextName);
+ const cleanUsername = getCleanUsername(username);
+ const room = await findRoomByName(roomName);
+
+ if (!room) {
+ throw new ChatError(404, 'Room not found.');
+ }
+
+ if (!(await isRoomCreator(room, cleanUsername))) {
+ sendRoomCreatorRequired();
+ }
+
+ if (!cleanNextName) {
+ throw new ChatError(400, 'Room name is required.');
+ }
+
+ const oldName = room.name;
+
+ room.name = cleanNextName;
+ room.roomKey = getRoomKey(cleanNextName);
+
+ try {
+ await room.save();
+ } catch (error) {
+ if (error instanceof UniqueConstraintError) {
+ throw new ChatError(409, 'A room with that name already exists.');
+ }
+
+ throw error;
+ }
+
+ const viewer = await findUserByUsername(cleanUsername);
+
+ return {
+ oldName,
+ room: await serializeRoom(room, viewer),
+ };
+}
+
+async function deleteRoomForUser(name, username) {
+ const roomName = normalizeRoomName(name);
+ const cleanUsername = getCleanUsername(username);
+ const room = await findRoomByName(roomName);
+
+ if (!room) {
+ throw new ChatError(404, 'Room not found.');
+ }
+
+ if (!(await isRoomCreator(room, cleanUsername))) {
+ sendRoomCreatorRequired();
+ }
+
+ const deletedName = room.name;
+
+ await room.setMembers([]);
+ await room.destroy();
+
+ return {
+ name: deletedName,
+ };
+}
+
+async function joinRoomForUser(name, username) {
+ const roomName = normalizeRoomName(name);
+ const cleanUsername = getCleanUsername(username);
+ const room = await findRoomByName(roomName);
+
+ if (!room) {
+ throw new ChatError(404, 'Room not found.');
+ }
+
+ if (!cleanUsername) {
+ throw new ChatError(400, 'Username is required.');
+ }
+
+ const user = await findOrCreateUser(cleanUsername);
+
+ await ensureRoomMember(room, user);
+
+ return serializeRoom(room, user);
+}
+
+async function leaveRoomForUser(name, username) {
+ const roomName = normalizeRoomName(name);
+ const cleanUsername = getCleanUsername(username);
+ const room = await findRoomByName(roomName);
+
+ if (!room) {
+ throw new ChatError(404, 'Room not found.');
+ }
+
+ const user = await findUserByUsername(cleanUsername);
+
+ if (!user) {
+ throw new ChatError(404, 'User not found.');
+ }
+
+ await room.removeMember(user);
+
+ return serializeRoom(room, user);
+}
+
+async function listMessagesForRoom(name) {
+ const roomName = normalizeRoomName(name);
+ const room = await findRoomByName(roomName);
+
+ if (!room) {
+ throw new ChatError(404, 'Room not found.');
+ }
+
+ const messages = await Message.findAll({
+ where: {
+ roomId: room.id,
+ },
+ include: [
+ {
+ model: User,
+ as: 'author',
+ attributes: ['username'],
+ },
+ ],
+ order: [
+ ['createdAt', 'ASC'],
+ ['id', 'ASC'],
+ ],
+ });
+
+ return {
+ roomName: room.name,
+ messages: messages.map(serializeMessage),
+ };
+}
+
+async function createMessageForRoom(name, author, body) {
+ const roomName = normalizeRoomName(name);
+ const cleanAuthor = getCleanUsername(author);
+ const cleanBody = String(body || '').trim();
+ const room = await findRoomByName(roomName);
+
+ if (!room) {
+ throw new ChatError(404, 'Room not found.');
+ }
+
+ if (!cleanAuthor) {
+ throw new ChatError(400, 'Message author is required.');
+ }
+
+ if (!cleanBody) {
+ throw new ChatError(400, 'Message text is required.');
+ }
+
+ const user = await findOrCreateUser(cleanAuthor);
+
+ await ensureRoomMember(room, user);
+
+ const message = await Message.create({
+ roomId: room.id,
+ userId: user.id,
+ body: cleanBody,
+ });
+
+ message.author = user;
+
+ return {
+ roomName: room.name,
+ message: serializeMessage(message),
+ };
+}
+
+module.exports = {
+ ChatError,
+ findOrCreateUser,
+ findUserByUsername,
+ findRoomByName,
+ isRoomCreator,
+ ensureRoomMember,
+ listRoomsForUser,
+ createRoomForUser,
+ renameRoomForUser,
+ deleteRoomForUser,
+ joinRoomForUser,
+ leaveRoomForUser,
+ listMessagesForRoom,
+ createMessageForRoom,
+};
diff --git a/src/backend/utils/names.js b/src/backend/utils/names.js
new file mode 100644
index 000000000..2ba2f5f46
--- /dev/null
+++ b/src/backend/utils/names.js
@@ -0,0 +1,22 @@
+'use strict';
+
+function normalizeRoomName(value) {
+ return String(value || '')
+ .trim()
+ .replace(/^#+/, '')
+ .trim();
+}
+
+function getRoomKey(name) {
+ return name.toLowerCase();
+}
+
+function getUsernameKey(username) {
+ return username.toLowerCase();
+}
+
+module.exports = {
+ normalizeRoomName,
+ getRoomKey,
+ getUsernameKey,
+};
diff --git a/src/backend/utils/time.js b/src/backend/utils/time.js
new file mode 100644
index 000000000..128dd0e13
--- /dev/null
+++ b/src/backend/utils/time.js
@@ -0,0 +1,21 @@
+'use strict';
+
+/**
+ * Formats a date object into a time string (HH:MM format)
+ * @param {Date} date - The date to format
+ * @returns {string} The formatted time string
+ */
+function formatMessageTime(date) {
+ return `${String(date.getHours()).padStart(2, '0')}:${String(
+ date.getMinutes(),
+ ).padStart(2, '0')}`;
+}
+
+function formatMessageDate(date) {
+ return new Date(date).toISOString();
+}
+
+module.exports = {
+ formatMessageDate,
+ formatMessageTime,
+};
diff --git a/src/backend/websocket/chatSocket.js b/src/backend/websocket/chatSocket.js
new file mode 100644
index 000000000..f286c3b57
--- /dev/null
+++ b/src/backend/websocket/chatSocket.js
@@ -0,0 +1,255 @@
+'use strict';
+
+const { WebSocketServer, WebSocket } = require('ws');
+const {
+ ChatError,
+ listRoomsForUser,
+ createRoomForUser,
+ renameRoomForUser,
+ deleteRoomForUser,
+ joinRoomForUser,
+ leaveRoomForUser,
+ listMessagesForRoom,
+ createMessageForRoom,
+} = require('../services/chatService');
+
+function getUsernameFromRequest(request) {
+ const url = new URL(request.url, 'http://localhost');
+
+ return String(url.searchParams.get('username') || '').trim();
+}
+
+function sendJson(socket, message) {
+ if (socket.readyState !== WebSocket.OPEN) {
+ return;
+ }
+
+ socket.send(JSON.stringify(message));
+}
+
+function sendResponse(socket, requestId, data) {
+ sendJson(socket, {
+ type: 'response',
+ requestId,
+ ok: true,
+ data,
+ });
+}
+
+function sendError(socket, requestId, message) {
+ sendJson(socket, {
+ type: 'response',
+ requestId,
+ ok: false,
+ message,
+ });
+}
+
+async function sendRoomsToClient(socket) {
+ if (!socket.username) {
+ return;
+ }
+
+ const rooms = await listRoomsForUser(socket.username);
+
+ sendJson(socket, {
+ type: 'rooms:update',
+ data: rooms,
+ });
+}
+
+function createChatWebSocketServer(server) {
+ // clients variable to track all connected clients
+ const clients = new Set();
+ const wss = new WebSocketServer({
+ path: '/ws',
+ server,
+ });
+
+ // we use this to trigger room list updates for all clients
+ // for example when a room is created, deleted, or renamed
+ async function broadcastRoomLists() {
+ await Promise.all([...clients].map((client) => sendRoomsToClient(client)));
+ }
+
+ function broadcastToAll(message) {
+ clients.forEach((client) => sendJson(client, message));
+ }
+
+ // we use this to broadcast messages to all clients in a specific room
+ function broadcastToRoom(roomName, message) {
+ clients.forEach((client) => {
+ if (client.activeRoomName === roomName) {
+ sendJson(client, message);
+ }
+ });
+ }
+
+ async function handleRequest(socket, request) {
+ const payload = request.payload || {};
+
+ switch (request.type) {
+ case 'rooms:list': {
+ const rooms = await listRoomsForUser(socket.username);
+
+ sendResponse(socket, request.requestId, rooms);
+ break;
+ }
+
+ case 'rooms:create': {
+ const room = await createRoomForUser(payload.name, socket.username);
+
+ sendResponse(socket, request.requestId, room);
+ await broadcastRoomLists();
+ break;
+ }
+
+ case 'rooms:rename': {
+ const result = await renameRoomForUser(
+ payload.name,
+ payload.nextName,
+ socket.username,
+ );
+
+ clients.forEach((client) => {
+ if (client.activeRoomName === result.oldName) {
+ client.activeRoomName = result.room.name;
+ }
+ });
+
+ sendResponse(socket, request.requestId, result.room);
+
+ broadcastToAll({
+ type: 'room:renamed',
+ data: {
+ oldName: result.oldName,
+ room: result.room,
+ },
+ });
+ await broadcastRoomLists();
+ break;
+ }
+
+ case 'rooms:delete': {
+ const deletedRoom = await deleteRoomForUser(
+ payload.name,
+ socket.username,
+ );
+
+ clients.forEach((client) => {
+ if (client.activeRoomName === deletedRoom.name) {
+ client.activeRoomName = '';
+ }
+ });
+
+ sendResponse(socket, request.requestId, null);
+
+ broadcastToAll({
+ type: 'room:deleted',
+ data: deletedRoom,
+ });
+ await broadcastRoomLists();
+ break;
+ }
+
+ case 'rooms:join': {
+ const room = await joinRoomForUser(payload.name, socket.username);
+
+ socket.activeRoomName = room.name;
+ sendResponse(socket, request.requestId, room);
+ await broadcastRoomLists();
+ break;
+ }
+
+ case 'rooms:leave': {
+ const room = await leaveRoomForUser(payload.name, socket.username);
+
+ if (socket.activeRoomName === room.name) {
+ socket.activeRoomName = '';
+ }
+
+ sendResponse(socket, request.requestId, room);
+ await broadcastRoomLists();
+ break;
+ }
+
+ case 'messages:list': {
+ const result = await listMessagesForRoom(payload.roomName);
+
+ socket.activeRoomName = result.roomName;
+ sendResponse(socket, request.requestId, result.messages);
+ break;
+ }
+
+ case 'messages:create': {
+ const result = await createMessageForRoom(
+ payload.roomName,
+ socket.username,
+ payload.body,
+ );
+
+ sendResponse(socket, request.requestId, result.message);
+
+ broadcastToRoom(result.roomName, {
+ type: 'messages:created',
+ data: result,
+ });
+ await broadcastRoomLists();
+ break;
+ }
+
+ default:
+ throw new ChatError(400, 'Unknown chat action.');
+ }
+ }
+
+ wss.on('connection', (socket, request) => {
+ socket.username = getUsernameFromRequest(request);
+ socket.activeRoomName = '';
+ clients.add(socket);
+
+ // eslint-disable-next-line no-console
+ console.log(
+ `Client connected: ${socket.username} | Total clients: ${clients.size}`,
+ );
+
+ socket.on('message', async (rawMessage) => {
+ let requestMessage;
+
+ try {
+ requestMessage = JSON.parse(rawMessage.toString());
+
+ if (!requestMessage.requestId) {
+ return;
+ }
+
+ await handleRequest(socket, requestMessage);
+ } catch (error) {
+ const message =
+ error instanceof ChatError ? error.message : 'Internal server error.';
+
+ if (!(error instanceof ChatError)) {
+ // eslint-disable-next-line no-console
+ console.error(error);
+ }
+
+ sendError(socket, requestMessage?.requestId, message);
+ }
+ });
+
+ socket.on('close', () => {
+ clients.delete(socket);
+
+ // eslint-disable-next-line no-console
+ console.log(
+ `Client disconnected: ${socket.username} | Total clients: ${clients.size}`,
+ );
+ });
+ });
+
+ return wss;
+}
+
+module.exports = {
+ createChatWebSocketServer,
+};
diff --git a/src/frontend/.gitignore b/src/frontend/.gitignore
new file mode 100644
index 000000000..a547bf36d
--- /dev/null
+++ b/src/frontend/.gitignore
@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
diff --git a/src/frontend/README.md b/src/frontend/README.md
new file mode 100644
index 000000000..957f68782
--- /dev/null
+++ b/src/frontend/README.md
@@ -0,0 +1,3 @@
+# Chat App frontend
+
+React frontend for the chat application.
diff --git a/src/frontend/eslint.config.js b/src/frontend/eslint.config.js
new file mode 100644
index 000000000..cec29a20c
--- /dev/null
+++ b/src/frontend/eslint.config.js
@@ -0,0 +1,32 @@
+import js from '@eslint/js';
+import globals from 'globals';
+import reactHooks from 'eslint-plugin-react-hooks';
+import reactRefresh from 'eslint-plugin-react-refresh';
+import tseslint from 'typescript-eslint';
+import { defineConfig, globalIgnores } from 'eslint/config';
+
+export default defineConfig([
+ globalIgnores(['dist']),
+ {
+ files: ['**/*.{ts,tsx}'],
+ extends: [
+ js.configs.recommended,
+ tseslint.configs.recommended,
+ reactHooks.configs.flat.recommended,
+ reactRefresh.configs.vite,
+ ],
+ languageOptions: {
+ parser: tseslint.parser,
+ parserOptions: {
+ ecmaFeatures: {
+ jsx: true,
+ },
+ },
+ globals: globals.browser,
+ },
+ rules: {
+ 'no-unused-vars': 'off',
+ '@typescript-eslint/no-unused-vars': 'error',
+ },
+ },
+]);
diff --git a/src/frontend/index.html b/src/frontend/index.html
new file mode 100644
index 000000000..1952a852f
--- /dev/null
+++ b/src/frontend/index.html
@@ -0,0 +1,16 @@
+
+
+
+
+
+
+
+
+
+ Chat App
+
+
+
+
+
+
diff --git a/src/frontend/package-lock.json b/src/frontend/package-lock.json
new file mode 100644
index 000000000..793ee3da7
--- /dev/null
+++ b/src/frontend/package-lock.json
@@ -0,0 +1,3209 @@
+{
+ "name": "frontend",
+ "version": "0.0.0",
+ "lockfileVersion": 3,
+ "requires": true,
+ "packages": {
+ "": {
+ "name": "frontend",
+ "version": "0.0.0",
+ "dependencies": {
+ "@radix-ui/react-dialog": "^1.1.15",
+ "classnames": "^2.5.1",
+ "react": "^19.2.5",
+ "react-dom": "^19.2.5"
+ },
+ "devDependencies": {
+ "@eslint/js": "^10.0.1",
+ "@types/node": "^24.12.2",
+ "@types/react": "^19.2.14",
+ "@types/react-dom": "^19.2.3",
+ "@vitejs/plugin-react": "^6.0.1",
+ "eslint": "^10.2.1",
+ "eslint-plugin-react-hooks": "^7.1.1",
+ "eslint-plugin-react-refresh": "^0.5.2",
+ "globals": "^17.5.0",
+ "typescript": "~6.0.2",
+ "typescript-eslint": "^8.58.2",
+ "vite": "^8.0.10"
+ }
+ },
+ "node_modules/@babel/code-frame": {
+ "version": "7.29.0",
+ "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.29.0.tgz",
+ "integrity": "sha512-9NhCeYjq9+3uxgdtp20LSiJXJvN0FeCtNGpJxuMFZ1Kv3cWUNb6DOhJwUvcVCzKGR66cw4njwM6hrJLqgOwbcw==",
+ "dev": true,
+ "license": "MIT",
+ "dependencies": {
+ "@babel/helper-validator-identifier": "^7.28.5",
+ "js-tokens": "^4.0.0",
+ "picocolors": "^1.1.1"
+ },
+ "engines": {
+ "node": ">=6.9.0"
+ }
+ },
+ "node_modules/@babel/compat-data": {
+ "version": "7.29.0",
+ "resolved": "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.29.0.tgz",
+ "integrity": "sha512-T1NCJqT/j9+cn8fvkt7jtwbLBfLC/1y1c7NtCeXFRgzGTsafi68MRv8yzkYSapBnFA6L3U2VSc02ciDzoAJhJg==",
+ "dev": true,
+ "license": "MIT",
+ "engines": {
+ "node": ">=6.9.0"
+ }
+ },
+ "node_modules/@babel/core": {
+ "version": "7.29.0",
+ "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.29.0.tgz",
+ "integrity": "sha512-CGOfOJqWjg2qW/Mb6zNsDm+u5vFQ8DxXfbM09z69p5Z6+mE1ikP2jUXw+j42Pf1XTYED2Rni5f95npYeuwMDQA==",
+ "dev": true,
+ "license": "MIT",
+ "peer": true,
+ "dependencies": {
+ "@babel/code-frame": "^7.29.0",
+ "@babel/generator": "^7.29.0",
+ "@babel/helper-compilation-targets": "^7.28.6",
+ "@babel/helper-module-transforms": "^7.28.6",
+ "@babel/helpers": "^7.28.6",
+ "@babel/parser": "^7.29.0",
+ "@babel/template": "^7.28.6",
+ "@babel/traverse": "^7.29.0",
+ "@babel/types": "^7.29.0",
+ "@jridgewell/remapping": "^2.3.5",
+ "convert-source-map": "^2.0.0",
+ "debug": "^4.1.0",
+ "gensync": "^1.0.0-beta.2",
+ "json5": "^2.2.3",
+ "semver": "^6.3.1"
+ },
+ "engines": {
+ "node": ">=6.9.0"
+ },
+ "funding": {
+ "type": "opencollective",
+ "url": "https://opencollective.com/babel"
+ }
+ },
+ "node_modules/@babel/generator": {
+ "version": "7.29.1",
+ "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.29.1.tgz",
+ "integrity": "sha512-qsaF+9Qcm2Qv8SRIMMscAvG4O3lJ0F1GuMo5HR/Bp02LopNgnZBC/EkbevHFeGs4ls/oPz9v+Bsmzbkbe+0dUw==",
+ "dev": true,
+ "license": "MIT",
+ "dependencies": {
+ "@babel/parser": "^7.29.0",
+ "@babel/types": "^7.29.0",
+ "@jridgewell/gen-mapping": "^0.3.12",
+ "@jridgewell/trace-mapping": "^0.3.28",
+ "jsesc": "^3.0.2"
+ },
+ "engines": {
+ "node": ">=6.9.0"
+ }
+ },
+ "node_modules/@babel/helper-compilation-targets": {
+ "version": "7.28.6",
+ "resolved": "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.28.6.tgz",
+ "integrity": "sha512-JYtls3hqi15fcx5GaSNL7SCTJ2MNmjrkHXg4FSpOA/grxK8KwyZ5bubHsCq8FXCkua6xhuaaBit+3b7+VZRfcA==",
+ "dev": true,
+ "license": "MIT",
+ "dependencies": {
+ "@babel/compat-data": "^7.28.6",
+ "@babel/helper-validator-option": "^7.27.1",
+ "browserslist": "^4.24.0",
+ "lru-cache": "^5.1.1",
+ "semver": "^6.3.1"
+ },
+ "engines": {
+ "node": ">=6.9.0"
+ }
+ },
+ "node_modules/@babel/helper-globals": {
+ "version": "7.28.0",
+ "resolved": "https://registry.npmjs.org/@babel/helper-globals/-/helper-globals-7.28.0.tgz",
+ "integrity": "sha512-+W6cISkXFa1jXsDEdYA8HeevQT/FULhxzR99pxphltZcVaugps53THCeiWA8SguxxpSp3gKPiuYfSWopkLQ4hw==",
+ "dev": true,
+ "license": "MIT",
+ "engines": {
+ "node": ">=6.9.0"
+ }
+ },
+ "node_modules/@babel/helper-module-imports": {
+ "version": "7.28.6",
+ "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.28.6.tgz",
+ "integrity": "sha512-l5XkZK7r7wa9LucGw9LwZyyCUscb4x37JWTPz7swwFE/0FMQAGpiWUZn8u9DzkSBWEcK25jmvubfpw2dnAMdbw==",
+ "dev": true,
+ "license": "MIT",
+ "dependencies": {
+ "@babel/traverse": "^7.28.6",
+ "@babel/types": "^7.28.6"
+ },
+ "engines": {
+ "node": ">=6.9.0"
+ }
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+ "optional": true
+ },
+ "sass-embedded": {
+ "optional": true
+ },
+ "stylus": {
+ "optional": true
+ },
+ "sugarss": {
+ "optional": true
+ },
+ "terser": {
+ "optional": true
+ },
+ "tsx": {
+ "optional": true
+ },
+ "yaml": {
+ "optional": true
+ }
+ }
+ },
+ "node_modules/which": {
+ "version": "2.0.2",
+ "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
+ "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
+ "dev": true,
+ "license": "ISC",
+ "dependencies": {
+ "isexe": "^2.0.0"
+ },
+ "bin": {
+ "node-which": "bin/node-which"
+ },
+ "engines": {
+ "node": ">= 8"
+ }
+ },
+ "node_modules/word-wrap": {
+ "version": "1.2.5",
+ "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",
+ "integrity": "sha512-BN22B5eaMMI9UMtjrGd5g5eCYPpCPDUy0FJXbYsaT5zYxjFOckS53SQDE3pWkVoWpHXVb3BrYcEN4Twa55B5cA==",
+ "dev": true,
+ "license": "MIT",
+ "engines": {
+ "node": ">=0.10.0"
+ }
+ },
+ "node_modules/yallist": {
+ "version": "3.1.1",
+ "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
+ "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==",
+ "dev": true,
+ "license": "ISC"
+ },
+ "node_modules/yocto-queue": {
+ "version": "0.1.0",
+ "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",
+ "integrity": "sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==",
+ "dev": true,
+ "license": "MIT",
+ "engines": {
+ "node": ">=10"
+ },
+ "funding": {
+ "url": "https://github.com/sponsors/sindresorhus"
+ }
+ },
+ "node_modules/zod": {
+ "version": "4.3.6",
+ "resolved": "https://registry.npmjs.org/zod/-/zod-4.3.6.tgz",
+ "integrity": "sha512-rftlrkhHZOcjDwkGlnUtZZkvaPHCsDATp4pGpuOOMDaTdDDXF91wuVDJoWoPsKX/3YPQ5fHuF3STjcYyKr+Qhg==",
+ "dev": true,
+ "license": "MIT",
+ "peer": true,
+ "funding": {
+ "url": "https://github.com/sponsors/colinhacks"
+ }
+ },
+ "node_modules/zod-validation-error": {
+ "version": "4.0.2",
+ "resolved": "https://registry.npmjs.org/zod-validation-error/-/zod-validation-error-4.0.2.tgz",
+ "integrity": "sha512-Q6/nZLe6jxuU80qb/4uJ4t5v2VEZ44lzQjPDhYJNztRQ4wyWc6VF3D3Kb/fAuPetZQnhS3hnajCf9CsWesghLQ==",
+ "dev": true,
+ "license": "MIT",
+ "engines": {
+ "node": ">=18.0.0"
+ },
+ "peerDependencies": {
+ "zod": "^3.25.0 || ^4.0.0"
+ }
+ }
+ }
+}
diff --git a/src/frontend/package.json b/src/frontend/package.json
new file mode 100644
index 000000000..8c7ef1ff4
--- /dev/null
+++ b/src/frontend/package.json
@@ -0,0 +1,32 @@
+{
+ "name": "frontend",
+ "private": true,
+ "version": "0.0.0",
+ "type": "module",
+ "scripts": {
+ "dev": "vite",
+ "build": "tsc -b && vite build",
+ "lint": "eslint .",
+ "preview": "vite preview"
+ },
+ "dependencies": {
+ "@radix-ui/react-dialog": "^1.1.15",
+ "classnames": "^2.5.1",
+ "react": "^19.2.5",
+ "react-dom": "^19.2.5"
+ },
+ "devDependencies": {
+ "@eslint/js": "^10.0.1",
+ "@types/node": "^24.12.2",
+ "@types/react": "^19.2.14",
+ "@types/react-dom": "^19.2.3",
+ "@vitejs/plugin-react": "^6.0.1",
+ "eslint": "^10.2.1",
+ "eslint-plugin-react-hooks": "^7.1.1",
+ "eslint-plugin-react-refresh": "^0.5.2",
+ "globals": "^17.5.0",
+ "typescript": "~6.0.2",
+ "typescript-eslint": "^8.58.2",
+ "vite": "^8.0.10"
+ }
+}
diff --git a/src/frontend/public/favicon.svg b/src/frontend/public/favicon.svg
new file mode 100644
index 000000000..b1c94efc9
--- /dev/null
+++ b/src/frontend/public/favicon.svg
@@ -0,0 +1,4 @@
+
diff --git a/src/frontend/src/App.css b/src/frontend/src/App.css
new file mode 100644
index 000000000..13e320014
--- /dev/null
+++ b/src/frontend/src/App.css
@@ -0,0 +1,5 @@
+@import "./styles/buttons.css";
+@import "./styles/chat.css";
+@import "./styles/modal.css";
+@import "./styles/rooms.css";
+@import "./styles/login.css";
diff --git a/src/frontend/src/App.tsx b/src/frontend/src/App.tsx
new file mode 100644
index 000000000..e1fd3dcd9
--- /dev/null
+++ b/src/frontend/src/App.tsx
@@ -0,0 +1,112 @@
+import { useState, type SubmitEvent } from 'react';
+import classNames from 'classnames';
+import './App.css';
+import { login, loginErrors } from './api';
+import ChatPage from './ChatPage';
+import RoomsPage from './RoomsPage';
+
+const usernameKey = 'chat.username';
+const duplicateUsernameMessage = 'That name is already in use. Try another.';
+
+function App() {
+ const storedUsername = localStorage.getItem(usernameKey);
+ const username = storedUsername?.trim();
+ const [error, setError] = useState('');
+ const [isSubmitting, setIsSubmitting] = useState(false);
+
+ const handleLogin = async (event: SubmitEvent) => {
+ event.preventDefault();
+
+ const formData = new FormData(event.currentTarget);
+ const nextUsername = String(formData.get('username') || '').trim();
+
+ if (!nextUsername) {
+ setError('Enter a username to join the chat.');
+
+ return;
+ }
+
+ setError('');
+ setIsSubmitting(true);
+
+ try {
+ const data = await login(nextUsername);
+
+ localStorage.setItem(usernameKey, data.username);
+ globalThis.location.assign('/chat');
+ } catch (loginError) {
+ if (
+ loginError instanceof Error &&
+ loginError.message === loginErrors.duplicateUsername
+ ) {
+ setError(duplicateUsernameMessage);
+
+ return;
+ }
+
+ setError('Could not join the chat. Try again.');
+ } finally {
+ setIsSubmitting(false);
+ }
+ };
+
+ if (['/chat', '/rooms'].includes(globalThis.location.pathname) && !username) {
+ globalThis.history.replaceState(null, '', '/login');
+ }
+
+ if (globalThis.location.pathname === '/rooms') {
+ return ;
+ }
+
+ if (globalThis.location.pathname === '/chat') {
+ return ;
+ }
+
+ if (globalThis.location.pathname !== '/login') {
+ globalThis.history.replaceState(null, '', '/login');
+ }
+
+ return (
+
+
+
+
Chat App
+
Pick a name to join the chat.
+
+
+
+
+
+ );
+}
+
+export default App;
diff --git a/src/frontend/src/ChatHeader.tsx b/src/frontend/src/ChatHeader.tsx
new file mode 100644
index 000000000..948ceb2ce
--- /dev/null
+++ b/src/frontend/src/ChatHeader.tsx
@@ -0,0 +1,52 @@
+import classNames from 'classnames';
+import type { Room } from './types';
+
+type ChatHeaderProps = {
+ activeRoom: Room | undefined;
+ onLeaveActiveRoom: () => void;
+};
+
+function ChatHeader({ activeRoom, onLeaveActiveRoom }: ChatHeaderProps) {
+ return (
+
+ );
+}
+
+export default ChatHeader;
diff --git a/src/frontend/src/ChatPage.tsx b/src/frontend/src/ChatPage.tsx
new file mode 100644
index 000000000..8038a5f58
--- /dev/null
+++ b/src/frontend/src/ChatPage.tsx
@@ -0,0 +1,57 @@
+import ChatHeader from './ChatHeader';
+import ChatSidebar from './ChatSidebar';
+import MessageComposer from './MessageComposer';
+import MessageList from './MessageList';
+import useChatPage from './useChatPage';
+
+function ChatPage() {
+ const {
+ activeRoom,
+ activeRoomName,
+ displayedMessages,
+ error,
+ handleCreateRoom,
+ handleLeaveActiveRoom,
+ handlePostMessage,
+ isCreatingRoom,
+ joinedRooms,
+ messageText,
+ setIsCreatingRoom,
+ setMessageText,
+ username,
+ } = useChatPage();
+
+ return (
+
+ setIsCreatingRoom((current) => !current)}
+ />
+
+
+
+ );
+}
+
+export default ChatPage;
diff --git a/src/frontend/src/ChatSidebar.tsx b/src/frontend/src/ChatSidebar.tsx
new file mode 100644
index 000000000..a45ea9396
--- /dev/null
+++ b/src/frontend/src/ChatSidebar.tsx
@@ -0,0 +1,86 @@
+import type { SubmitEvent } from 'react';
+import classNames from 'classnames';
+import type { Room } from './types';
+
+type ChatSidebarProps = {
+ activeRoomName: string;
+ isCreatingRoom: boolean;
+ joinedRooms: Room[];
+ username: string;
+ onCreateRoom: (event: SubmitEvent) => void;
+ onToggleCreateRoom: () => void;
+};
+
+function ChatSidebar({
+ activeRoomName,
+ isCreatingRoom,
+ joinedRooms,
+ username,
+ onCreateRoom,
+ onToggleCreateRoom,
+}: ChatSidebarProps) {
+ return (
+
+ );
+}
+
+export default ChatSidebar;
diff --git a/src/frontend/src/DeleteRoomDialog.tsx b/src/frontend/src/DeleteRoomDialog.tsx
new file mode 100644
index 000000000..448469f8d
--- /dev/null
+++ b/src/frontend/src/DeleteRoomDialog.tsx
@@ -0,0 +1,63 @@
+import type { SubmitEvent } from 'react';
+import * as Dialog from '@radix-ui/react-dialog';
+import classNames from 'classnames';
+import type { Room } from './types';
+
+type DeleteRoomDialogProps = {
+ confirmation: string;
+ onConfirmationChange: (confirmation: string) => void;
+ onOpenChange: (open: boolean) => void;
+ onSubmit: (event: SubmitEvent) => void;
+ open: boolean;
+ room: Room;
+};
+
+function DeleteRoomDialog({
+ confirmation,
+ onConfirmationChange,
+ onOpenChange,
+ onSubmit,
+ open,
+ room,
+}: DeleteRoomDialogProps) {
+ return (
+
+
+
+
+
+
+
+
+
+ );
+}
+
+export default DeleteRoomDialog;
diff --git a/src/frontend/src/MessageComposer.tsx b/src/frontend/src/MessageComposer.tsx
new file mode 100644
index 000000000..5845d5085
--- /dev/null
+++ b/src/frontend/src/MessageComposer.tsx
@@ -0,0 +1,36 @@
+import type { SubmitEvent } from 'react';
+import type { Room } from './types';
+
+type MessageComposerProps = {
+ activeRoom: Room | undefined;
+ messageText: string;
+ onMessageTextChange: (messageText: string) => void;
+ onPostMessage: (event: SubmitEvent) => void;
+};
+
+function MessageComposer({
+ activeRoom,
+ messageText,
+ onMessageTextChange,
+ onPostMessage,
+}: MessageComposerProps) {
+ return (
+
+ );
+}
+
+export default MessageComposer;
diff --git a/src/frontend/src/MessageList.tsx b/src/frontend/src/MessageList.tsx
new file mode 100644
index 000000000..0e7575c90
--- /dev/null
+++ b/src/frontend/src/MessageList.tsx
@@ -0,0 +1,126 @@
+import { Fragment, useLayoutEffect, useMemo, useRef } from 'react';
+import classNames from 'classnames';
+import { formatDayLabel, type DisplayMessage } from './chatPageUtils';
+import type { Room } from './types';
+
+type DateGroup = {
+ dateKey: string;
+ label: string;
+ messages: DisplayMessage[];
+};
+
+function groupByDate(messages: DisplayMessage[]): DateGroup[] {
+ const groups: DateGroup[] = [];
+
+ for (const message of messages) {
+ const date = new Date(message.date);
+ const dateKey = `${date.getFullYear()}-${date.getMonth()}-${date.getDate()}`;
+ // If the message belongs to the same date as the last group, add it to that group
+ const lastGroup = groups.at(-1);
+
+ if (lastGroup && lastGroup.dateKey === dateKey) {
+ lastGroup.messages.push(message);
+ } else {
+ // Otherwise, create a new group
+ groups.push({
+ dateKey,
+ label: formatDayLabel(message.date),
+ messages: [message],
+ });
+ }
+ }
+
+ return groups;
+}
+
+type MessageListProps = {
+ activeRoom: Room | undefined;
+ error: string;
+ messages: DisplayMessage[];
+ username: string;
+};
+
+function MessageList({
+ activeRoom,
+ error,
+ messages,
+ username,
+}: MessageListProps) {
+ const groups = useMemo(() => groupByDate(messages), [messages]);
+ const scrollContainerRef = useRef(null);
+ const previousRoomNameRef = useRef(null);
+ const scrolledRoomNameRef = useRef(null);
+
+ // useLayoutEffect runs synchronously after all DOM updates
+ // auto-scrolling to new messages
+ useLayoutEffect(() => {
+ const roomName = activeRoom?.name ?? null;
+
+ if (previousRoomNameRef.current !== roomName) {
+ previousRoomNameRef.current = roomName;
+ scrolledRoomNameRef.current = null;
+ }
+
+ if (!roomName) {
+ return;
+ }
+
+ if (!messages.length || scrolledRoomNameRef.current === roomName) {
+ return;
+ }
+
+ const scrollContainer = scrollContainerRef.current;
+
+ if (!scrollContainer) {
+ return;
+ }
+
+ // Auto-scroll to the bottom of the message list to show the newest message
+ // "scroll all the way down"
+ scrollContainer.scrollTop = scrollContainer.scrollHeight;
+ scrolledRoomNameRef.current = roomName;
+ }, [activeRoom?.name, messages.length]);
+
+ return (
+
+ {error &&
{error}
}
+
+ {activeRoom && messages.length ? (
+ groups.map((group) => (
+
+
+
+ {group.messages.map((message) => (
+ -
+ {message.author !== username && (
+
+ {message.author}
+ ·
+
+
+ )}
+ {message.body}
+ {message.author === username && (
+
+ )}
+
+ ))}
+
+
+ ))
+ ) : (
+
+ {activeRoom ? 'No messages yet.' : 'No rooms yet.'}
+
+ )}
+
+ );
+}
+
+export default MessageList;
diff --git a/src/frontend/src/RenameRoomDialog.tsx b/src/frontend/src/RenameRoomDialog.tsx
new file mode 100644
index 000000000..8c295fe6a
--- /dev/null
+++ b/src/frontend/src/RenameRoomDialog.tsx
@@ -0,0 +1,61 @@
+import type { SubmitEvent } from 'react';
+import * as Dialog from '@radix-ui/react-dialog';
+import classNames from 'classnames';
+import type { Room } from './types';
+
+type RenameRoomDialogProps = {
+ name: string;
+ onNameChange: (name: string) => void;
+ onOpenChange: (open: boolean) => void;
+ onSubmit: (event: SubmitEvent) => void;
+ open: boolean;
+ room: Room;
+};
+
+function RenameRoomDialog({
+ name,
+ onNameChange,
+ onOpenChange,
+ onSubmit,
+ open,
+ room,
+}: RenameRoomDialogProps) {
+ return (
+
+
+
+
+
+
+
+
+
+ );
+}
+
+export default RenameRoomDialog;
diff --git a/src/frontend/src/RoomControlSheet.tsx b/src/frontend/src/RoomControlSheet.tsx
new file mode 100644
index 000000000..5fafaa88e
--- /dev/null
+++ b/src/frontend/src/RoomControlSheet.tsx
@@ -0,0 +1,115 @@
+import * as Dialog from '@radix-ui/react-dialog';
+import classNames from 'classnames';
+import { useState, type SubmitEvent } from 'react';
+import type { Room } from './types';
+
+type RoomControlSheetProps = {
+ canManageRoom: boolean;
+ onDeleteRoom: (room: Room) => void;
+ onLeaveRoom: (room: Room) => Promise | void;
+ onOpenChange: (open: boolean) => void;
+ onRenameRoom: (room: Room, name: string) => Promise;
+ room: Room | null;
+};
+
+function RoomControlSheet({
+ canManageRoom,
+ onDeleteRoom,
+ onLeaveRoom,
+ onOpenChange,
+ onRenameRoom,
+ room,
+}: RoomControlSheetProps) {
+ const [name, setName] = useState(room?.name ?? '');
+ const canSaveName =
+ canManageRoom && Boolean(name.trim()) && name.trim() !== room?.name;
+
+ const handleRenameRoom = async (event: SubmitEvent) => {
+ event.preventDefault();
+
+ if (!room) {
+ return;
+ }
+
+ const nextRoom = await onRenameRoom(room, name);
+
+ if (nextRoom) {
+ setName(nextRoom.name);
+ }
+ };
+
+ return (
+
+ {room ? (
+
+
+
+
+
+ Manage room
+
+
+
+
+
+
+
+ ) : null}
+
+ );
+}
+
+export default RoomControlSheet;
diff --git a/src/frontend/src/RoomsPage.tsx b/src/frontend/src/RoomsPage.tsx
new file mode 100644
index 000000000..2f9a1fa5e
--- /dev/null
+++ b/src/frontend/src/RoomsPage.tsx
@@ -0,0 +1,291 @@
+import classNames from 'classnames';
+import { useEffect, useMemo, useState } from 'react';
+import DeleteRoomDialog from './DeleteRoomDialog';
+import RoomControlSheet from './RoomControlSheet';
+import RenameRoomDialog from './RenameRoomDialog';
+import type { Room } from './types';
+import useRoomsPage from './useRoomsPage';
+
+const mobileRoomsMedia = '(max-width: 520px)';
+
+function isMobileRoomsViewport() {
+ return globalThis.matchMedia?.(mobileRoomsMedia).matches ?? false;
+}
+
+function RoomsPage() {
+ const {
+ canManageRoom,
+ deleteConfirmation,
+ deleteDialogOpen,
+ deleteTarget,
+ error,
+ handleCreateRoom,
+ handleDeleteDialogOpenChange,
+ handleDeleteRoom,
+ handleLeaveRoom,
+ handleRenameDialogOpenChange,
+ handleRenameRoom,
+ isCreatingRoom,
+ openDeleteModal,
+ openRenameModal,
+ renameRoom,
+ renameDialogOpen,
+ renameName,
+ renameTarget,
+ search,
+ setDeleteConfirmation,
+ setIsCreatingRoom,
+ setRenameName,
+ setSearch,
+ visibleRooms,
+ } = useRoomsPage();
+ const [mobileSheetRoomName, setMobileSheetRoomName] = useState(
+ null,
+ );
+ const mobileSheetRoom = useMemo(
+ () =>
+ visibleRooms.find((room) => room.name === mobileSheetRoomName) ?? null,
+ [mobileSheetRoomName, visibleRooms],
+ );
+ const canManageMobileSheetRoom = mobileSheetRoom
+ ? canManageRoom(mobileSheetRoom)
+ : false;
+
+ useEffect(() => {
+ if (globalThis.matchMedia === undefined) {
+ return;
+ }
+
+ const media = globalThis.matchMedia(mobileRoomsMedia);
+ const closeSheetOnDesktop = () => {
+ if (!media.matches) {
+ setMobileSheetRoomName(null);
+ }
+ };
+
+ closeSheetOnDesktop();
+ media.addEventListener('change', closeSheetOnDesktop);
+
+ return () => media.removeEventListener('change', closeSheetOnDesktop);
+ }, []);
+
+ const openMobileSheet = (room: Room) => {
+ if (!isMobileRoomsViewport()) {
+ return;
+ }
+
+ setMobileSheetRoomName(room.name);
+ };
+
+ const closeMobileSheet = () => setMobileSheetRoomName(null);
+
+ const handleMobileSheetOpenChange = (open: boolean) => {
+ if (!open) {
+ closeMobileSheet();
+ }
+ };
+
+ const handleMobileLeaveRoom = async (room: Room) => {
+ await handleLeaveRoom(room);
+ closeMobileSheet();
+ };
+
+ const handleMobileDeleteRoom = (room: Room) => {
+ closeMobileSheet();
+ openDeleteModal(room);
+ };
+
+ return (
+
+
+ back to chat
+
+ All rooms
+ Rooms
+
+
+
+
+
+
+
+
+ {renameTarget ? (
+
+ ) : null}
+
+ {deleteTarget ? (
+
+ ) : null}
+
+ );
+}
+
+export default RoomsPage;
diff --git a/src/frontend/src/api.ts b/src/frontend/src/api.ts
new file mode 100644
index 000000000..2bf8600cd
--- /dev/null
+++ b/src/frontend/src/api.ts
@@ -0,0 +1,39 @@
+import type { LoginResponse } from './types';
+
+export const loginErrors = {
+ duplicateUsername: 'duplicate-username',
+ failed: 'login-failed',
+ unreachable: 'server-unreachable',
+} as const;
+
+async function request(input: RequestInfo | URL, init?: RequestInit) {
+ let response: Response;
+
+ try {
+ response = await fetch(input, init);
+ } catch {
+ throw new Error(loginErrors.unreachable);
+ }
+
+ return response as Response & { json(): Promise };
+}
+
+export async function login(username: string): Promise {
+ const response = await request('/api/login', {
+ method: 'POST',
+ headers: {
+ 'Content-Type': 'application/json',
+ },
+ body: JSON.stringify({ username }),
+ });
+
+ if (response.status === 409) {
+ throw new Error(loginErrors.duplicateUsername);
+ }
+
+ if (!response.ok) {
+ throw new Error(loginErrors.failed);
+ }
+
+ return response.json();
+}
diff --git a/src/frontend/src/assets/arrow.svg b/src/frontend/src/assets/arrow.svg
new file mode 100644
index 000000000..5be9a5d9c
--- /dev/null
+++ b/src/frontend/src/assets/arrow.svg
@@ -0,0 +1,3 @@
+
diff --git a/src/frontend/src/chatPageUtils.ts b/src/frontend/src/chatPageUtils.ts
new file mode 100644
index 000000000..a5b6e5d7c
--- /dev/null
+++ b/src/frontend/src/chatPageUtils.ts
@@ -0,0 +1,112 @@
+import type { ChatMessage, Room } from './types';
+
+export const usernameKey = 'chat.username';
+export const duplicateRoomMessage = 'A room with that name already exists.';
+
+export type DisplayMessage = ChatMessage & {
+ shouldAnimate?: boolean;
+};
+
+export function getHashRoomName() {
+ return decodeURIComponent(globalThis.location.hash.replace(/^#/, '')).trim();
+}
+
+/**
+ * Formats a date string into a human-readable label.
+ * Returns 'Today' or 'Yesterday' for recent dates, otherwise formats as "Month Day" or "Month Day, Year".
+ */
+export function formatDayLabel(isoString: string): string {
+ const date = new Date(isoString);
+ const messageDate = new Date(
+ date.getFullYear(),
+ date.getMonth(),
+ date.getDate(),
+ );
+ const now = new Date();
+ const today = new Date(now.getFullYear(), now.getMonth(), now.getDate());
+ const yesterday = new Date(today);
+ yesterday.setDate(yesterday.getDate() - 1);
+
+ if (messageDate.getTime() === today.getTime()) return 'Today';
+ if (messageDate.getTime() === yesterday.getTime()) return 'Yesterday';
+
+ return messageDate.toLocaleDateString(undefined, {
+ month: 'short',
+ day: 'numeric',
+ ...(messageDate.getFullYear() !== today.getFullYear() && {
+ year: 'numeric',
+ }),
+ });
+}
+
+/**
+ * Determines which messages should be animated based on previous state.
+ *
+ * This function compares the current list of messages with the next list to identify:
+ * - Messages that were already animated (preserve animation state)
+ * - New messages that weren't in the previous list (mark for animation)
+ * - Existing messages that weren't animated before (no animation)
+ *
+ * @param nextMessages - The new list of messages from the server
+ * @param currentMessages - The current list of messages with animation states
+ * @param shouldAnimateNewMessages - Whether new messages should animate at all
+ * @returns The next messages with shouldAnimate flags
+ */
+export function markNewMessages(
+ nextMessages: ChatMessage[],
+ currentMessages: DisplayMessage[],
+ shouldAnimateNewMessages: boolean,
+): DisplayMessage[] {
+ if (!shouldAnimateNewMessages) {
+ return nextMessages;
+ }
+
+ // Create a Set of all current message IDs for quick lookup
+ const currentMessageIds = new Set(
+ currentMessages.map((message) => message.id),
+ );
+
+ // Create a Set of message IDs that were already animated
+ const animatedMessageIds = new Set(
+ currentMessages
+ .filter((message) => message.shouldAnimate)
+ .map((message) => message.id),
+ );
+
+ // Map through next messages, setting shouldAnimate based on:
+ // - If it was already animated, keep it animated
+ // - If it's a new message (not in current), animate it
+ return nextMessages.map((message) => ({
+ ...message,
+ shouldAnimate:
+ animatedMessageIds.has(message.id) || !currentMessageIds.has(message.id),
+ }));
+}
+
+/**
+ * Updates or inserts a room in the rooms array.
+ * If the room already exists (by name), it will be updated.
+ * If the room doesn't exist, it will be added to the end of the array.
+ */
+export function upsertRoom(rooms: Room[], room: Room): Room[] {
+ const exists = rooms.some((current) => current.name === room.name);
+
+ if (!exists) {
+ return [...rooms, room];
+ }
+
+ return rooms.map((current) => (current.name === room.name ? room : current));
+}
+
+export function appendUniqueMessage(
+ messages: DisplayMessage[],
+ message: DisplayMessage,
+): DisplayMessage[] {
+ const exists = messages.some((current) => current.id === message.id);
+
+ if (exists) {
+ return messages;
+ }
+
+ return [...messages, message];
+}
diff --git a/src/frontend/src/chatSocket.ts b/src/frontend/src/chatSocket.ts
new file mode 100644
index 000000000..36abb747d
--- /dev/null
+++ b/src/frontend/src/chatSocket.ts
@@ -0,0 +1,315 @@
+import type {
+ BroadcastPayloads,
+ ChatMessage,
+ ChatRequestType,
+ ChatSocketEvent,
+ ChatSocketListener,
+ PendingRequest,
+ Room,
+ ServerBroadcast,
+ ServerMessage,
+ ServerResponse,
+} from './types';
+
+function getSocketUrl(username: string) {
+ const query = new URLSearchParams({ username });
+
+ return `ws://${globalThis.location.host}/ws?${query.toString()}`;
+}
+
+class ChatSocketClient {
+ private username: string;
+
+ private socket: WebSocket | null = null;
+
+ private connectPromise: Promise | null = null;
+
+ private reconnectTimer = 0;
+
+ private reconnectAttempts = 0;
+
+ private nextRequestId = 1;
+
+ private activeRoomName = '';
+
+ private pendingRequests = new Map();
+
+ private listeners = new Map>();
+
+ constructor(username: string) {
+ this.username = username;
+ }
+
+ on(
+ type: EventType,
+ listener: (data: BroadcastPayloads[EventType]) => void,
+ ) {
+ const listeners = this.listeners.get(type) || new Set();
+ const savedListener = listener as ChatSocketListener;
+
+ listeners.add(savedListener);
+ this.listeners.set(type, listeners);
+
+ return () => {
+ listeners.delete(savedListener);
+ };
+ }
+
+ fetchRooms() {
+ return this.request('rooms:list');
+ }
+
+ createRoom(name: string) {
+ return this.request('rooms:create', { name });
+ }
+
+ renameRoom(name: string, nextName: string) {
+ return this.request('rooms:rename', { name, nextName });
+ }
+
+ deleteRoom(name: string) {
+ return this.request('rooms:delete', { name });
+ }
+
+ joinRoom(name: string) {
+ this.activeRoomName = name;
+
+ return this.request('rooms:join', { name }).then((room) => {
+ this.activeRoomName = room.name;
+
+ return room;
+ });
+ }
+
+ leaveRoom(name: string) {
+ return this.request('rooms:leave', { name }).then((room) => {
+ if (this.activeRoomName === room.name) {
+ this.activeRoomName = '';
+ }
+
+ return room;
+ });
+ }
+
+ fetchMessages(roomName: string) {
+ this.activeRoomName = roomName;
+
+ return this.request('messages:list', { roomName });
+ }
+
+ postMessage(roomName: string, body: string) {
+ return this.request('messages:create', { roomName, body });
+ }
+
+ async request(
+ type: ChatRequestType,
+ payload?: Record,
+ ) {
+ await this.connect();
+
+ if (!this.socket || this.socket.readyState !== WebSocket.OPEN) {
+ throw new Error('Chat connection is not open.');
+ }
+
+ const requestId = this.nextRequestId;
+
+ this.nextRequestId += 1;
+
+ const responsePromise = new Promise((resolve, reject) => {
+ this.pendingRequests.set(requestId, {
+ resolve: (value) => resolve(value as ResponseData),
+ reject,
+ });
+ });
+
+ try {
+ this.socket.send(
+ JSON.stringify({
+ type,
+ requestId,
+ payload,
+ }),
+ );
+ } catch (error) {
+ this.pendingRequests.delete(requestId);
+ throw error;
+ }
+
+ return responsePromise;
+ }
+
+ connect() {
+ if (this.socket && this.socket.readyState === WebSocket.OPEN) {
+ return Promise.resolve();
+ }
+
+ if (this.connectPromise) {
+ return this.connectPromise;
+ }
+
+ this.connectPromise = new Promise((resolve, reject) => {
+ const socket = new WebSocket(getSocketUrl(this.username));
+ let settled = false;
+
+ const failConnection = () => {
+ if (settled) {
+ return;
+ }
+
+ settled = true;
+ this.connectPromise = null;
+ reject(new Error('Could not connect to the chat server.'));
+ };
+
+ socket.addEventListener('open', () => {
+ const shouldRestoreRoomView = this.reconnectAttempts > 0;
+
+ settled = true;
+ this.reconnectAttempts = 0;
+ this.connectPromise = null;
+ resolve();
+
+ if (shouldRestoreRoomView) {
+ this.restoreRoomView();
+ }
+ });
+
+ socket.addEventListener('message', (event) => {
+ this.handleMessage(event.data);
+ });
+
+ socket.addEventListener('close', () => {
+ this.rejectPendingRequests();
+
+ if (!settled) {
+ failConnection();
+ }
+
+ this.connectPromise = null;
+ this.reconnectOnce();
+ });
+
+ socket.addEventListener('error', () => {
+ if (socket.readyState !== WebSocket.OPEN) {
+ failConnection();
+ }
+ });
+
+ this.socket = socket;
+ });
+
+ return this.connectPromise;
+ }
+
+ private reconnectOnce() {
+ if (this.reconnectAttempts >= 1) {
+ return;
+ }
+
+ this.reconnectAttempts += 1;
+ globalThis.clearTimeout(this.reconnectTimer);
+ this.reconnectTimer = globalThis.setTimeout(() => {
+ this.connect().catch(() => undefined);
+ }, 500);
+ }
+
+ private rejectPendingRequests() {
+ this.pendingRequests.forEach((request) => {
+ request.reject(new Error('Chat connection was closed.'));
+ });
+ this.pendingRequests.clear();
+ }
+
+ private restoreRoomView() {
+ if (!this.activeRoomName || !this.socket) {
+ return;
+ }
+
+ try {
+ this.socket.send(
+ JSON.stringify({
+ type: 'messages:list',
+ requestId: this.nextRequestId,
+ payload: {
+ roomName: this.activeRoomName,
+ },
+ }),
+ );
+ this.nextRequestId += 1;
+ } catch {
+ // The next user action will open a new request if this restore fails.
+ }
+ }
+
+ private handleMessage(rawData: MessageEvent['data']) {
+ if (typeof rawData !== 'string') {
+ return;
+ }
+
+ const message = JSON.parse(rawData) as ServerMessage;
+
+ if (message.type === 'response') {
+ this.handleResponse(message);
+
+ return;
+ }
+
+ if (message.type === 'room:renamed') {
+ if (this.activeRoomName === message.data.oldName) {
+ this.activeRoomName = message.data.room.name;
+ }
+ }
+
+ if (message.type === 'room:deleted') {
+ if (this.activeRoomName === message.data.name) {
+ this.activeRoomName = '';
+ }
+ }
+
+ this.emit(message);
+ }
+
+ private handleResponse(message: ServerResponse) {
+ const pendingRequest = this.pendingRequests.get(message.requestId);
+
+ if (!pendingRequest) {
+ return;
+ }
+
+ this.pendingRequests.delete(message.requestId);
+
+ if (message.ok) {
+ pendingRequest.resolve(message.data);
+
+ return;
+ }
+
+ pendingRequest.reject(new Error(message.message || 'Chat request failed.'));
+ }
+
+ private emit(message: ServerBroadcast) {
+ const listeners = this.listeners.get(message.type);
+
+ if (!listeners) {
+ return;
+ }
+
+ listeners.forEach((listener) => {
+ listener(message.data);
+ });
+ }
+}
+
+const clients = new Map();
+
+export function getChatSocket(username: string) {
+ const cleanUsername = username.trim();
+ let client = clients.get(cleanUsername);
+
+ if (!client) {
+ client = new ChatSocketClient(cleanUsername);
+ clients.set(cleanUsername, client);
+ }
+
+ return client;
+}
diff --git a/src/frontend/src/index.css b/src/frontend/src/index.css
new file mode 100644
index 000000000..63c9b59ed
--- /dev/null
+++ b/src/frontend/src/index.css
@@ -0,0 +1,59 @@
+:root {
+ --font-family-base: "Google Sans", sans-serif;
+ --color-page-bg: #fdfdfb;
+ --color-surface: #fff;
+ --color-text: #202020;
+ --color-text-strong: #0f0f0f;
+ --color-text-dark: #111;
+ --color-muted: #777;
+ --color-muted-dark: #6d6d6d;
+ --color-muted-medium: #707070;
+ --color-muted-soft: #8b8b8b;
+ --color-dialog-text: #3f3f3f;
+ --color-border: #b9b9b9;
+ --color-border-control: #adadad;
+ --color-border-soft: #d0d0d0;
+ --color-border-input: #bdbdbd;
+ --color-focus: #808080;
+ --color-primary: #1f1f1f;
+ --color-danger: #f04444;
+ --color-danger-text: #d33;
+ --color-danger-solid: #d94848;
+ --radius-sm: 2px;
+ --radius-pill: 999px;
+ --font-size-xs: 13px;
+ --font-size-sm: 14px;
+ --font-size-md: 16px;
+ --app-min-height: 100svh;
+
+ font-family: var(--font-family-base);
+ color: var(--color-text);
+ background: var(--color-page-bg);
+}
+
+* {
+ box-sizing: border-box;
+}
+
+html,
+body,
+#root {
+ min-height: 100%;
+}
+
+html {
+ -webkit-text-size-adjust: 100%;
+ text-size-adjust: 100%;
+}
+
+body {
+ min-width: 320px;
+ min-height: var(--app-min-height);
+ margin: 0;
+ background: var(--color-page-bg);
+}
+
+button,
+input {
+ font: inherit;
+}
diff --git a/src/frontend/src/main.tsx b/src/frontend/src/main.tsx
new file mode 100644
index 000000000..2239905c1
--- /dev/null
+++ b/src/frontend/src/main.tsx
@@ -0,0 +1,10 @@
+import { StrictMode } from 'react';
+import { createRoot } from 'react-dom/client';
+import './index.css';
+import App from './App.tsx';
+
+createRoot(document.getElementById('root')!).render(
+
+
+ ,
+);
diff --git a/src/frontend/src/styles/buttons.css b/src/frontend/src/styles/buttons.css
new file mode 100644
index 000000000..762708814
--- /dev/null
+++ b/src/frontend/src/styles/buttons.css
@@ -0,0 +1,54 @@
+.app-button {
+ display: grid;
+ min-width: 112px;
+ height: 36px;
+ place-items: center;
+ padding: 0 22px;
+ color: var(--color-muted-dark);
+ background: transparent;
+ border: 1px solid var(--color-border-control);
+ border-radius: var(--radius-sm);
+ font-size: var(--font-size-md);
+ line-height: 1;
+ text-decoration: none;
+ cursor: pointer;
+ transition: color 0.35s, background 0.35s, border-color 0.35s;
+}
+
+.app-button.primary {
+ color: var(--color-surface);
+ background: var(--color-primary);
+ border-color: #4a4a4a;
+ font-weight: 700;
+}
+
+.app-button.danger {
+ color: var(--color-danger-text);
+ border-color: #e1a1a1;
+}
+
+.app-button.danger.solid {
+ color: var(--color-surface);
+ background: var(--color-danger-solid);
+ border-color: var(--color-danger-solid);
+ font-weight: 700;
+}
+
+.app-button:disabled {
+ cursor: not-allowed;
+ opacity: 0.55;
+}
+
+.app-icon-button {
+ display: grid;
+ width: 28px;
+ height: 28px;
+ place-items: center;
+ padding: 0;
+ color: var(--color-muted-medium);
+ background: transparent;
+ border: 0;
+ font-size: 22px;
+ line-height: 1;
+ cursor: pointer;
+}
diff --git a/src/frontend/src/styles/chat.css b/src/frontend/src/styles/chat.css
new file mode 100644
index 000000000..034c970cc
--- /dev/null
+++ b/src/frontend/src/styles/chat.css
@@ -0,0 +1,457 @@
+.chat-page {
+ display: grid;
+ grid-template-columns: 240px minmax(0, 1fr);
+ height: var(--app-min-height);
+ color: var(--color-text-strong);
+ background: var(--color-page-bg);
+}
+
+.rooms-sidebar {
+ display: flex;
+ height: var(--app-min-height);
+ flex-direction: column;
+ justify-content: space-between;
+ padding: 22px 18px 24px;
+ border-right: 1px solid var(--color-border);
+ overflow-y: auto;
+}
+
+.chat-brand {
+ margin: 0 0 34px;
+ font-size: 18px;
+ font-weight: 700;
+ line-height: 1;
+ letter-spacing: 0;
+}
+
+.rooms-heading {
+ display: flex;
+ align-items: center;
+ justify-content: space-between;
+ margin-bottom: 16px;
+ padding: 0 4px;
+ color: var(--color-muted-medium);
+ font-size: var(--font-size-sm);
+ line-height: 1;
+ text-transform: uppercase;
+}
+
+.rooms-heading button {
+ width: 24px;
+ height: 24px;
+}
+
+.room-list {
+ display: grid;
+ gap: 14px;
+}
+
+.room-create-form {
+ display: grid;
+ gap: 8px;
+ margin: -4px 0 16px;
+}
+
+.room-create-form label {
+ position: absolute;
+ width: 1px;
+ height: 1px;
+ margin: -1px;
+ overflow: hidden;
+ clip: rect(0, 0, 0, 0);
+}
+
+.room-create-form input {
+ width: 100%;
+ height: 36px;
+ padding: 0 10px;
+ color: var(--color-text);
+ background: var(--color-surface);
+ border: 1px solid var(--color-border-input);
+ border-radius: var(--radius-sm);
+ font-size: var(--font-size-sm);
+ outline: none;
+}
+
+.room-create-form .app-button {
+ width: 100%;
+ min-width: 0;
+}
+
+.room-link {
+ display: flex;
+ min-height: 40px;
+ align-items: center;
+ justify-content: space-between;
+ gap: 12px;
+ padding: 0 13px;
+ color: var(--color-text-dark);
+ border: 1px solid transparent;
+ border-radius: 8px;
+ font-size: var(--font-size-md);
+ line-height: 1;
+ text-decoration: none;
+}
+
+.room-link.active {
+ border-color: #b5b5b5;
+}
+
+.room-name {
+ display: inline-flex;
+ min-width: 0;
+ align-items: center;
+ gap: 11px;
+ overflow-wrap: anywhere;
+}
+
+.room-name span {
+ color: var(--color-muted-medium);
+}
+
+.room-count {
+ display: grid;
+ min-width: 28px;
+ height: 24px;
+ place-items: center;
+ padding: 0 7px;
+ flex: 0 0 auto;
+ color: #6e6e6e;
+ border: 1px solid var(--color-border-soft);
+ border-radius: var(--radius-pill);
+ font-size: var(--font-size-xs);
+}
+
+.current-user {
+ display: flex;
+ align-items: center;
+ gap: 11px;
+ padding: 16px 4px 0;
+ border-top: 1px solid #dededc;
+}
+
+.user-avatar {
+ display: grid;
+ width: 36px;
+ height: 36px;
+ place-items: center;
+ color: #747474;
+ border: 1px solid var(--color-border);
+ border-radius: 50%;
+ font-size: var(--font-size-sm);
+}
+
+.current-user strong,
+.current-user span {
+ display: block;
+ line-height: 1.1;
+}
+
+.current-user strong {
+ font-size: var(--font-size-md);
+ font-weight: 600;
+}
+
+.current-user span {
+ color: var(--color-muted-medium);
+ font-size: var(--font-size-xs);
+}
+
+.chat-shell {
+ display: grid;
+ height: var(--app-min-height);
+ grid-template-rows: auto minmax(0, 1fr) auto;
+}
+
+.chat-header {
+ display: flex;
+ min-height: 68px;
+ align-items: center;
+ justify-content: space-between;
+ gap: 24px;
+ padding: 14px 22px 14px 24px;
+ border-bottom: 1px solid var(--color-border);
+}
+
+.chat-header > div:first-child {
+ min-width: 0;
+}
+
+.chat-header-title {
+ display: flex;
+ align-items: center;
+ gap: 12px;
+}
+
+.chat-header-title > div {
+ min-width: 0;
+}
+
+.mobile-only {
+ display: none;
+}
+
+.chat-header h2 {
+ margin: 0;
+ font-size: 20px;
+ font-weight: 700;
+ line-height: 1.05;
+ letter-spacing: 0;
+ overflow-wrap: anywhere;
+}
+
+.chat-header p {
+ margin: 4px 0 0;
+ color: var(--color-muted-dark);
+ font-size: 15px;
+ line-height: 1;
+}
+
+.chat-header-actions {
+ display: flex;
+ flex: 0 0 auto;
+ align-items: center;
+ gap: 10px;
+}
+
+.message-scroll {
+ min-height: 0;
+ overflow: auto;
+ padding: 24px 22px 32px 24px;
+}
+
+.day-pill {
+ display: grid;
+ width: max-content;
+ min-width: 62px;
+ height: 28px;
+ place-items: center;
+ margin: 0 auto 22px;
+ color: #6c6c6c;
+ border: 1px solid #d5d5d5;
+ border-radius: var(--radius-pill);
+ font-size: var(--font-size-xs);
+ line-height: 1;
+}
+
+.message-list + .day-pill {
+ margin-top: 22px;
+}
+
+.message-list {
+ display: grid;
+ gap: 20px;
+ margin: 0;
+ padding: 0;
+ list-style: none;
+}
+
+.chat-status {
+ margin: 0 0 18px;
+ color: var(--color-muted);
+ font-size: var(--font-size-sm);
+ line-height: 1.4;
+}
+
+.chat-status.error {
+ color: var(--color-danger);
+}
+
+@keyframes message-slide-in {
+ from {
+ opacity: 0;
+ transform: translateY(12px);
+ }
+ to {
+ opacity: 1;
+ transform: translateY(0);
+ }
+}
+
+.message-row {
+ display: grid;
+ width: fit-content;
+ max-width: min(520px, 72%);
+}
+
+.message-row.message-appear {
+ animation: message-slide-in 300ms ease-out both;
+}
+
+.message-row.mine {
+ justify-self: end;
+ justify-items: end;
+ margin-top: 6px;
+}
+
+.message-meta {
+ display: flex;
+ align-items: center;
+ gap: 8px;
+ margin-bottom: 5px;
+ color: #666;
+ font-size: var(--font-size-xs);
+ line-height: 1;
+}
+
+.message-meta strong {
+ color: var(--color-text-strong);
+ font-size: var(--font-size-xs);
+ font-weight: 700;
+}
+
+.message-bubble {
+ margin: 0;
+ padding: 12px 17px;
+ color: #101010;
+ background: rgba(255, 255, 255, 0.34);
+ border: 1px solid #b6b6b6;
+ border-radius: 12px;
+ font-size: var(--font-size-md);
+ line-height: 1.25;
+}
+
+.message-row.mine .message-bubble {
+ background: rgba(120, 170, 255, 0.22);
+ border-color: #9ab8e6;
+}
+
+.message-time {
+ margin-top: 6px;
+ color: #575757;
+ font-size: var(--font-size-xs);
+ line-height: 1;
+}
+
+.composer {
+ display: block;
+ padding: 14px 22px 14px 24px;
+ border-top: 1px solid var(--color-border);
+}
+
+.composer label {
+ position: absolute;
+ width: 1px;
+ height: 1px;
+ margin: -1px;
+ overflow: hidden;
+ clip: rect(0, 0, 0, 0);
+}
+
+.composer input {
+ width: 100%;
+ height: 52px;
+ padding: 0 17px;
+ color: var(--color-text);
+ background: rgba(255, 255, 255, 0.45);
+ border: 1px solid var(--color-border-control);
+ border-radius: var(--radius-sm);
+ font-size: var(--font-size-md);
+ outline: none;
+}
+
+.composer input::placeholder {
+ color: var(--color-muted);
+ opacity: 1;
+}
+
+.composer input:focus {
+ box-shadow: 0 0 0 1px var(--color-focus);
+}
+
+.composer input:disabled {
+ cursor: not-allowed;
+ opacity: 0.65;
+}
+
+.rooms-link-button:hover {
+ color: var(--color-surface);
+ background: var(--color-primary);
+ border-color: var(--color-primary);
+}
+
+@media (max-width: 760px) {
+ .chat-page {
+ grid-template-columns: 1fr;
+ }
+
+ .rooms-sidebar {
+ display: none;
+ }
+
+ .current-user {
+ display: none;
+ }
+
+ .chat-shell {
+ height: var(--app-min-height);
+ }
+
+ .chat-header {
+ min-height: 56px;
+ gap: 12px;
+ padding: 12px 16px;
+ }
+
+ .chat-header-actions {
+ gap: 8px;
+ }
+
+ .chat-header-actions .app-button.danger {
+ min-width: 94px;
+ height: 32px;
+ padding: 0 12px;
+ font-size: var(--font-size-xs);
+ }
+
+ .chat-header h2 {
+ font-size: 15px;
+ }
+
+ .chat-header p {
+ display: none;
+ }
+
+ .desktop-only {
+ display: none !important;
+ }
+
+ .mobile-only {
+ display: inline-flex;
+ }
+
+ .rooms-back-arrow {
+ color: var(--color-muted);
+ font-size: 24px;
+ line-height: 1;
+ text-decoration: none;
+ padding-bottom: 2px;
+ }
+
+ .rooms-back-arrow:hover {
+ color: var(--color-text-strong);
+ }
+
+ .message-scroll {
+ padding: 20px 16px 28px;
+ }
+
+ .message-row {
+ max-width: 78%;
+ }
+
+ .message-bubble {
+ padding: 10px 14px;
+ font-size: var(--font-size-sm);
+ }
+
+ .composer {
+ padding: 10px 12px;
+ }
+
+ .composer input {
+ height: 38px;
+ border-radius: var(--radius-pill);
+ font-size: var(--font-size-xs);
+ }
+}
diff --git a/src/frontend/src/styles/login.css b/src/frontend/src/styles/login.css
new file mode 100644
index 000000000..693dd616f
--- /dev/null
+++ b/src/frontend/src/styles/login.css
@@ -0,0 +1,168 @@
+.login-page {
+ display: grid;
+ min-height: var(--app-min-height);
+ place-items: center;
+ padding: 32px;
+}
+
+.login-shell {
+ width: min(100%, 390px);
+}
+
+.login-panel {
+ width: 100%;
+}
+
+.login-panel h1 {
+ margin: 0 0 13px;
+ color: var(--color-text);
+ font-size: 28px;
+ font-weight: 700;
+ line-height: 1.1;
+ letter-spacing: 0;
+}
+
+.login-panel p {
+ margin: 0 0 32px;
+ color: var(--color-muted-soft);
+ font-size: var(--font-size-sm);
+ line-height: 1.45;
+}
+
+.login-form {
+ display: grid;
+ gap: 0;
+}
+
+.login-form label {
+ margin-bottom: 7px;
+ color: #a1a1a1;
+ font-size: 10px;
+ font-weight: 700;
+ line-height: 1;
+ letter-spacing: 0.5px;
+ text-transform: uppercase;
+}
+
+.login-form input {
+ width: 100%;
+ height: 48px;
+ margin-bottom: 26px;
+ padding: 0 13px;
+ color: var(--color-text);
+ background: var(--color-surface);
+ border: 1px solid var(--color-text);
+ border-radius: var(--radius-sm);
+ font-size: var(--font-size-md);
+ line-height: 1;
+ outline: none;
+}
+
+.login-form input:focus {
+ box-shadow: 0 0 0 1px var(--color-text);
+}
+
+.login-form input.has-error {
+ margin-bottom: 8px;
+ border-color: var(--color-danger);
+}
+
+.login-form input.has-error:focus {
+ box-shadow: 0 0 0 1px var(--color-danger);
+}
+
+.login-form input::placeholder {
+ color: var(--color-muted-soft);
+ opacity: 1;
+}
+
+.login-panel .login-error {
+ margin: 0 0 22px;
+ color: var(--color-danger);
+ font-size: 12px;
+ line-height: 1.35;
+}
+
+.login-form button {
+ display: grid;
+ place-items: center;
+ width: 100%;
+ height: 43px;
+ color: var(--color-surface);
+ background: var(--color-text);
+ border: 1px solid #5c5c5c;
+ border-radius: 0;
+ font-size: var(--font-size-sm);
+ font-weight: 700;
+ line-height: 1;
+ cursor: pointer;
+}
+
+.login-form button:disabled {
+ cursor: wait;
+ opacity: 0.75;
+}
+
+.desktop-label {
+ display: inline-flex;
+ align-items: center;
+ gap: 4px;
+}
+
+.button-arrow {
+ width: 12px;
+ height: 12px;
+ flex: 0 0 auto;
+}
+
+.login-form button:hover {
+ background: #3a3a3a;
+ border-color: #787878;
+}
+
+.login-form button:active {
+ background: #151515;
+ border-color: #404040;
+ transform: scale(0.98);
+}
+
+.login-form button:focus-visible {
+ outline: 2px solid var(--color-text);
+ outline-offset: 3px;
+}
+
+.mobile-label {
+ display: none;
+}
+
+@media (max-width: 520px) {
+ .login-page {
+ place-items: center;
+ padding: 24px;
+ }
+
+ .login-shell {
+ width: 100%;
+ }
+
+ .login-panel {
+ transform: none;
+ }
+
+ .login-form label {
+ position: absolute;
+ width: 1px;
+ height: 1px;
+ margin: -1px;
+ overflow: hidden;
+ clip: rect(0, 0, 0, 0);
+ }
+
+ .desktop-label {
+ display: none;
+ }
+
+ .mobile-label {
+ display: inline;
+ }
+}
diff --git a/src/frontend/src/styles/modal.css b/src/frontend/src/styles/modal.css
new file mode 100644
index 000000000..8460f1cfb
--- /dev/null
+++ b/src/frontend/src/styles/modal.css
@@ -0,0 +1,75 @@
+@keyframes backdrop-in {
+ from {
+ opacity: 0;
+ }
+ to {
+ opacity: 1;
+ }
+}
+
+@keyframes backdrop-out {
+ from {
+ opacity: 1;
+ }
+ to {
+ opacity: 0;
+ }
+}
+
+@keyframes dialog-in {
+ from {
+ opacity: 0;
+ transform: scale(0.92) translateY(8px);
+ }
+ to {
+ opacity: 1;
+ transform: scale(1) translateY(0);
+ }
+}
+
+@keyframes dialog-out {
+ from {
+ opacity: 1;
+ transform: scale(1) translateY(0);
+ }
+ to {
+ opacity: 0;
+ transform: scale(0.92) translateY(8px);
+ }
+}
+
+.modal-backdrop {
+ position: fixed;
+ inset: 0;
+ display: grid;
+ place-items: center;
+ padding: 20px;
+ background: rgba(0, 0, 0, 0.12);
+}
+
+.modal-backdrop[data-state='open'] {
+ animation: backdrop-in 200ms ease-out both;
+}
+
+.modal-backdrop[data-state='closed'] {
+ animation: backdrop-out 250ms ease-in both;
+}
+
+.delete-room-dialog {
+ display: grid;
+ width: min(100%, 500px);
+ gap: 18px;
+ padding: 26px;
+ color: var(--color-dialog-text);
+ background: var(--color-surface);
+ border: 1px solid var(--color-muted);
+ box-shadow: 0 12px 28px rgba(0, 0, 0, 0.16);
+}
+
+.delete-room-dialog[data-state='open'] {
+ animation: dialog-in 200ms ease-out both;
+}
+
+.delete-room-dialog[data-state='closed'] {
+ animation: dialog-out 250ms ease-in both;
+}
diff --git a/src/frontend/src/styles/rooms.css b/src/frontend/src/styles/rooms.css
new file mode 100644
index 000000000..247cbcd6a
--- /dev/null
+++ b/src/frontend/src/styles/rooms.css
@@ -0,0 +1,514 @@
+.rooms-page {
+ min-height: var(--app-min-height);
+ color: var(--color-text);
+ background: var(--color-page-bg);
+}
+
+.rooms-topbar {
+ display: flex;
+ min-height: 58px;
+ align-items: center;
+ gap: 26px;
+ padding: 0 22px;
+ border-bottom: 1px solid var(--color-border-soft);
+}
+
+.rooms-topbar a {
+ color: var(--color-muted);
+ font-size: var(--font-size-xs);
+ text-decoration: none;
+}
+
+.rooms-topbar a::before {
+ content: "<- ";
+}
+
+.rooms-topbar h1 {
+ margin: 0;
+ font-size: var(--font-size-sm);
+ font-weight: 700;
+ line-height: 1;
+}
+
+.mobile-title {
+ display: none;
+}
+
+.rooms-topbar button {
+ display: none;
+}
+
+.rooms-content {
+ width: min(100% - 40px, 760px);
+ margin: 36px auto 0;
+}
+
+.rooms-content h2 {
+ position: absolute;
+ width: 1px;
+ height: 1px;
+ margin: -1px;
+ overflow: hidden;
+ clip: rect(0, 0, 0, 0);
+}
+
+.rooms-search-row {
+ display: grid;
+ grid-template-columns: minmax(0, 1fr) auto;
+ gap: 12px;
+ margin-bottom: 18px;
+}
+
+.rooms-search-row label {
+ position: absolute;
+ width: 1px;
+ height: 1px;
+ margin: -1px;
+ overflow: hidden;
+ clip: rect(0, 0, 0, 0);
+}
+
+.rooms-search-row input {
+ width: 100%;
+ height: 42px;
+ padding: 0 18px;
+ color: var(--color-text);
+ background: var(--color-surface);
+ border: 1px solid var(--color-border-input);
+ border-radius: 0;
+ font-size: var(--font-size-sm);
+ outline: none;
+}
+
+.rooms-search-row input::placeholder {
+ color: var(--color-muted-soft);
+ opacity: 1;
+}
+
+.rooms-search-row input:focus {
+ box-shadow: 0 0 0 1px var(--color-focus);
+}
+
+.rooms-search-row button {
+ min-width: 122px;
+ height: 42px;
+}
+
+.rooms-status {
+ margin: 0 0 14px;
+ color: var(--color-muted);
+ font-size: var(--font-size-sm);
+ line-height: 1.4;
+}
+
+.rooms-status.error {
+ color: var(--color-danger);
+}
+
+.room-create-panel {
+ display: grid;
+ gap: 10px;
+ margin-bottom: 18px;
+ padding: 16px;
+ border: 1px solid var(--color-border-soft);
+}
+
+.room-create-panel label,
+.delete-room-dialog label {
+ color: #555;
+ font-size: var(--font-size-sm);
+ font-weight: 700;
+}
+
+.room-create-panel input,
+.delete-room-dialog input {
+ width: 100%;
+ height: 40px;
+ padding: 0 12px;
+ color: var(--color-text);
+ background: var(--color-surface);
+ border: 1px solid var(--color-border-input);
+ border-radius: 0;
+ font-size: var(--font-size-sm);
+ outline: none;
+}
+
+.room-create-panel > div,
+.delete-room-dialog > div {
+ display: flex;
+ justify-content: flex-end;
+ gap: 8px;
+}
+
+.all-room-list {
+ margin: 0;
+ padding: 0;
+ border: 1px solid var(--color-border-soft);
+ list-style: none;
+}
+
+.all-room-row {
+ display: grid;
+ grid-template-columns: minmax(0, 1fr) auto;
+ align-items: center;
+ gap: 20px;
+ min-height: 58px;
+ padding: 0 18px;
+ border-bottom: 1px solid #dedede;
+}
+
+.all-room-row:last-child {
+ border-bottom: 0;
+}
+
+.room-summary {
+ display: grid;
+ min-width: 0;
+ gap: 4px;
+ color: var(--color-text);
+ text-decoration: none;
+}
+
+.room-summary-main,
+.room-summary-preview {
+ display: flex;
+ min-width: 0;
+ align-items: center;
+ gap: 10px;
+}
+
+.room-summary-main span {
+ color: var(--color-muted);
+ font-size: 15px;
+}
+
+.room-summary-main strong {
+ min-width: 0;
+ font-size: var(--font-size-sm);
+ line-height: 1;
+ overflow-wrap: anywhere;
+}
+
+.room-summary-main small {
+ color: var(--color-muted);
+ font-size: 11px;
+ white-space: nowrap;
+}
+
+.room-summary-preview {
+ display: none;
+}
+
+.room-actions {
+ display: grid;
+ grid-template-columns: repeat(4, 86px);
+ align-items: center;
+ gap: 8px;
+}
+
+.room-actions button,
+.room-actions a {
+ width: 100%;
+ min-width: 0;
+}
+
+.room-actions .app-button {
+ padding: 0 10px;
+ text-align: center;
+}
+
+.delete-room-dialog h2 {
+ position: static;
+ width: auto;
+ height: auto;
+ margin: 0;
+ overflow: visible;
+ clip: auto;
+ color: var(--color-dialog-text);
+ font-size: var(--font-size-md);
+ font-weight: 700;
+ line-height: 1;
+}
+
+.room-control-sheet-backdrop,
+.room-control-sheet {
+ display: none;
+}
+
+@keyframes room-sheet-in {
+ from {
+ transform: translateY(100%);
+ }
+ to {
+ transform: translateY(0);
+ }
+}
+
+@keyframes room-sheet-out {
+ from {
+ transform: translateY(0);
+ }
+ to {
+ transform: translateY(100%);
+ }
+}
+
+@media (max-width: 600px) {
+ .rooms-content {
+ width: calc(100% - 24px);
+ }
+
+ .all-room-row {
+ gap: 10px;
+ padding: 0 12px;
+ }
+
+ .room-summary-main,
+ .room-summary-preview {
+ gap: 8px;
+ }
+
+ .room-actions {
+ grid-template-columns: repeat(4, 72px);
+ gap: 6px;
+ }
+
+ .room-actions .app-button {
+ height: 34px;
+ padding: 0 10px;
+ font-size: var(--font-size-sm);
+ }
+
+ .delete-room-dialog {
+ padding: 20px;
+ }
+}
+
+@media (max-width: 520px) {
+ .rooms-page {
+ min-height: var(--app-min-height);
+ }
+
+ .rooms-topbar {
+ min-height: 56px;
+ justify-content: space-between;
+ gap: 12px;
+ padding: 0 16px;
+ }
+
+ .rooms-topbar a {
+ display: none;
+ }
+
+ .rooms-topbar h1 {
+ font-size: 15px;
+ }
+
+ .desktop-title {
+ display: none;
+ }
+
+ .mobile-title {
+ display: inline;
+ }
+
+ .rooms-topbar button {
+ display: grid;
+ }
+
+ .rooms-content {
+ width: 100%;
+ margin: 0;
+ padding: 0 14px 28px;
+ }
+
+ .rooms-search-row {
+ display: block;
+ margin-bottom: 12px;
+ }
+
+ .rooms-search-row input {
+ height: 38px;
+ padding: 0 10px;
+ font-size: var(--font-size-xs);
+ }
+
+ .rooms-search-row button {
+ display: none;
+ }
+
+ .all-room-list {
+ border-width: 1px 0 0;
+ }
+
+ .all-room-row {
+ display: block;
+ min-height: 58px;
+ padding: 10px 0;
+ }
+
+ .all-room-row.active .room-summary-main strong {
+ color: var(--color-text-strong);
+ }
+
+ .room-summary {
+ gap: 7px;
+ }
+
+ .room-summary-main strong {
+ font-size: var(--font-size-xs);
+ }
+
+ .room-summary-main small {
+ display: none;
+ }
+
+ .room-summary-preview {
+ display: grid;
+ grid-template-columns: minmax(0, 1fr) auto auto;
+ gap: 10px;
+ color: var(--color-muted);
+ font-size: 12px;
+ }
+
+ .room-summary-preview span {
+ overflow: hidden;
+ text-overflow: ellipsis;
+ white-space: nowrap;
+ }
+
+ .room-summary-preview strong {
+ display: grid;
+ width: 18px;
+ height: 18px;
+ place-items: center;
+ color: var(--color-surface);
+ background: var(--color-text);
+ border-radius: 50%;
+ font-size: 11px;
+ line-height: 1;
+ }
+
+ .room-actions {
+ display: none;
+ }
+
+ .room-control-sheet-backdrop {
+ position: fixed;
+ inset: 0;
+ z-index: 20;
+ display: block;
+ background: rgba(0, 0, 0, 0.16);
+ }
+
+ .room-control-sheet-backdrop[data-state='open'] {
+ animation: backdrop-in 160ms ease-out both;
+ }
+
+ .room-control-sheet-backdrop[data-state='closed'] {
+ animation: backdrop-out 180ms ease-in both;
+ }
+
+ .room-control-sheet {
+ position: fixed;
+ right: 0;
+ bottom: 0;
+ left: 0;
+ z-index: 21;
+ display: grid;
+ gap: 14px;
+ padding: 14px 20px calc(24px + env(safe-area-inset-bottom));
+ color: var(--color-dialog-text);
+ background: var(--color-surface);
+ border: 1px solid var(--color-text);
+ border-bottom: 0;
+ border-radius: 18px 18px 0 0;
+ box-shadow: 0 -14px 34px rgba(0, 0, 0, 0.16);
+ }
+
+ .room-control-sheet[data-state='open'] {
+ animation: room-sheet-in 180ms ease-out both;
+ }
+
+ .room-control-sheet[data-state='closed'] {
+ animation: room-sheet-out 180ms ease-in both;
+ }
+
+ .room-control-sheet-handle {
+ width: 42px;
+ height: 4px;
+ margin: 0 auto 4px;
+ background: var(--color-border-input);
+ border-radius: var(--radius-pill);
+ }
+
+ .room-control-sheet-title {
+ margin: 0;
+ color: var(--color-text);
+ font-size: var(--font-size-md);
+ font-weight: 700;
+ line-height: 1;
+ }
+
+ .room-control-name-form {
+ display: grid;
+ gap: 7px;
+ }
+
+ .room-control-name-form label {
+ color: var(--color-muted-soft);
+ font-size: 12px;
+ font-weight: 700;
+ line-height: 1;
+ text-transform: uppercase;
+ }
+
+ .room-control-name-form > div {
+ display: grid;
+ grid-template-columns: minmax(0, 1fr) auto;
+ gap: 8px;
+ }
+
+ .room-control-name-form input {
+ width: 100%;
+ height: 42px;
+ min-width: 0;
+ padding: 0 12px;
+ color: var(--color-text);
+ background: var(--color-surface);
+ border: 1px solid var(--color-border-input);
+ border-radius: 0;
+ font-size: var(--font-size-sm);
+ outline: none;
+ }
+
+ .room-control-name-form input:read-only {
+ color: var(--color-muted-soft);
+ }
+
+ .room-control-name-form input:focus {
+ box-shadow: 0 0 0 1px var(--color-focus);
+ }
+
+ .room-control-name-form .app-button {
+ min-width: 74px;
+ height: 42px;
+ padding: 0 12px;
+ font-size: var(--font-size-sm);
+ }
+
+ .room-control-sheet-actions {
+ display: grid;
+ gap: 8px;
+ padding-top: 12px;
+ border-top: 1px solid var(--color-border-soft);
+ }
+
+ .room-control-sheet-actions .app-button {
+ width: 100%;
+ min-width: 0;
+ height: 42px;
+ font-size: var(--font-size-sm);
+ text-align: center;
+ }
+}
diff --git a/src/frontend/src/types/index.ts b/src/frontend/src/types/index.ts
new file mode 100644
index 000000000..a0f00f47a
--- /dev/null
+++ b/src/frontend/src/types/index.ts
@@ -0,0 +1,75 @@
+export type LoginResponse = {
+ username: string;
+};
+
+export type Room = {
+ name: string;
+ creatorUsername: string;
+ creatorUsernameKey: string;
+ ownerUserId: number | null;
+ members: number;
+ preview: string;
+ time: string;
+ unread: number;
+ joined: boolean;
+};
+
+export type ChatMessage = {
+ id: number;
+ author: string;
+ date: string;
+ time: string;
+ body: string;
+};
+
+export type ChatRequestType =
+ | 'rooms:list'
+ | 'rooms:create'
+ | 'rooms:rename'
+ | 'rooms:delete'
+ | 'rooms:join'
+ | 'rooms:leave'
+ | 'messages:list'
+ | 'messages:create';
+
+export type BroadcastPayloads = {
+ 'rooms:update': Room[];
+ 'messages:created': {
+ roomName: string;
+ message: ChatMessage;
+ };
+ 'room:renamed': {
+ oldName: string;
+ room: Room;
+ };
+ 'room:deleted': {
+ name: string;
+ };
+};
+
+export type ChatSocketEvent = keyof BroadcastPayloads;
+export type ChatSocketListener = (
+ data: BroadcastPayloads[ChatSocketEvent],
+) => void;
+
+export type PendingRequest = {
+ resolve: (value: unknown) => void;
+ reject: (reason: Error) => void;
+};
+
+export type ServerResponse = {
+ type: 'response';
+ requestId: number;
+ ok: boolean;
+ data?: unknown;
+ message?: string;
+};
+
+export type ServerBroadcast = {
+ [EventType in ChatSocketEvent]: {
+ type: EventType;
+ data: BroadcastPayloads[EventType];
+ };
+}[ChatSocketEvent];
+
+export type ServerMessage = ServerResponse | ServerBroadcast;
diff --git a/src/frontend/src/useChatPage.ts b/src/frontend/src/useChatPage.ts
new file mode 100644
index 000000000..0fa8f9b8d
--- /dev/null
+++ b/src/frontend/src/useChatPage.ts
@@ -0,0 +1,304 @@
+import {
+ useCallback,
+ useEffect,
+ useMemo,
+ useRef,
+ useState,
+ type SubmitEvent,
+} from 'react';
+import { getChatSocket } from './chatSocket';
+import {
+ appendUniqueMessage,
+ duplicateRoomMessage,
+ getHashRoomName,
+ markNewMessages,
+ upsertRoom,
+ usernameKey,
+ type DisplayMessage,
+} from './chatPageUtils';
+import type { Room } from './types';
+
+function useChatPage() {
+ const storedUsername = localStorage.getItem(usernameKey);
+ const username = storedUsername?.trim() || 'guest';
+ const [rooms, setRooms] = useState([]);
+ const [messages, setMessages] = useState([]);
+ const [activeRoomName, setActiveRoomName] = useState(getHashRoomName());
+ const [messageRoomName, setMessageRoomName] = useState('');
+ const [messageText, setMessageText] = useState('');
+ const [isCreatingRoom, setIsCreatingRoom] = useState(false);
+ const [error, setError] = useState('');
+ const chatSocket = useMemo(() => getChatSocket(username), [username]);
+ const activeRoomNameRef = useRef(activeRoomName);
+ const loadedRoomNameRef = useRef(null);
+ const displayedMessages =
+ activeRoomName &&
+ activeRoomName.toLowerCase() === messageRoomName.toLowerCase()
+ ? messages
+ : [];
+ const joinedRooms = useMemo(
+ () => rooms.filter((room) => room.joined),
+ [rooms],
+ );
+
+ const activeRoom = useMemo(
+ () => rooms.find((room) => room.name === activeRoomName),
+ [activeRoomName, rooms],
+ );
+
+ useEffect(() => {
+ activeRoomNameRef.current = activeRoomName;
+ }, [activeRoomName]);
+
+ const showRooms = useCallback((nextRooms: Room[]) => {
+ setRooms(nextRooms);
+
+ const firstJoinedRoom = nextRooms.find((room) => room.joined);
+
+ if (!getHashRoomName() && firstJoinedRoom) {
+ globalThis.history.replaceState(
+ null,
+ '',
+ `/chat#${encodeURIComponent(firstJoinedRoom.name)}`,
+ );
+ setActiveRoomName(firstJoinedRoom.name);
+ }
+ }, []);
+
+ useEffect(() => {
+ let ignore = false;
+
+ chatSocket
+ .fetchRooms()
+ .then((nextRooms) => {
+ if (ignore) {
+ return;
+ }
+
+ showRooms(nextRooms);
+ })
+ .catch(() => {
+ if (!ignore) {
+ setError('Could not load rooms.');
+ }
+ });
+
+ const stopRoomUpdates = chatSocket.on('rooms:update', (nextRooms) => {
+ if (!ignore) {
+ showRooms(nextRooms);
+ }
+ });
+
+ const stopRoomRenames = chatSocket.on('room:renamed', (event) => {
+ if (activeRoomNameRef.current !== event.oldName) {
+ return;
+ }
+
+ globalThis.history.replaceState(
+ null,
+ '',
+ `/chat#${encodeURIComponent(event.room.name)}`,
+ );
+ setActiveRoomName(event.room.name);
+ });
+
+ const stopRoomDeletes = chatSocket.on('room:deleted', (event) => {
+ if (activeRoomNameRef.current !== event.name) {
+ return;
+ }
+
+ globalThis.history.replaceState(null, '', '/chat');
+ loadedRoomNameRef.current = null;
+ setMessages([]);
+ setMessageRoomName('');
+ setActiveRoomName('');
+ });
+
+ const handleHashChange = () => {
+ setActiveRoomName(getHashRoomName());
+ };
+
+ globalThis.addEventListener('hashchange', handleHashChange);
+
+ return () => {
+ ignore = true;
+ stopRoomUpdates();
+ stopRoomRenames();
+ stopRoomDeletes();
+ globalThis.removeEventListener('hashchange', handleHashChange);
+ };
+ }, [chatSocket, showRooms]);
+
+ useEffect(() => {
+ if (!activeRoomName) {
+ return;
+ }
+
+ let ignore = false;
+
+ chatSocket
+ .joinRoom(activeRoomName)
+ .then((room) => {
+ if (ignore) {
+ return;
+ }
+
+ if (activeRoomName !== room.name) {
+ globalThis.history.replaceState(
+ null,
+ '',
+ `/chat#${encodeURIComponent(room.name)}`,
+ );
+ setActiveRoomName(room.name);
+ }
+
+ setRooms((currentRooms) => upsertRoom(currentRooms, room));
+ })
+ .catch(() => {
+ if (!ignore) {
+ setError('Could not join that room.');
+ }
+ });
+
+ return () => {
+ ignore = true;
+ };
+ }, [activeRoomName, chatSocket]);
+
+ useEffect(() => {
+ if (!activeRoomName) {
+ loadedRoomNameRef.current = null;
+ return;
+ }
+
+ let ignore = false;
+
+ chatSocket
+ .fetchMessages(activeRoomName)
+ .then((nextMessages) => {
+ if (ignore) {
+ return;
+ }
+
+ setMessageRoomName(activeRoomName);
+ setMessages((currentMessages) =>
+ markNewMessages(
+ nextMessages,
+ currentMessages,
+ loadedRoomNameRef.current === activeRoomName,
+ ),
+ );
+ loadedRoomNameRef.current = activeRoomName;
+ })
+ .catch(() => {
+ if (!ignore) {
+ setMessages([]);
+ setMessageRoomName('');
+ setError('Could not load messages.');
+ }
+ });
+
+ return () => {
+ ignore = true;
+ };
+ }, [activeRoomName, chatSocket]);
+
+ useEffect(() => {
+ return chatSocket.on('messages:created', (event) => {
+ if (
+ activeRoomNameRef.current.toLowerCase() !== event.roomName.toLowerCase()
+ ) {
+ return;
+ }
+
+ setMessages((currentMessages) =>
+ appendUniqueMessage(currentMessages, {
+ ...event.message,
+ shouldAnimate: true,
+ }),
+ );
+ setMessageRoomName(event.roomName);
+ loadedRoomNameRef.current = event.roomName;
+ });
+ }, [chatSocket]);
+
+ const handleCreateRoom = async (event: SubmitEvent) => {
+ event.preventDefault();
+
+ const form = event.currentTarget;
+ const formData = new FormData(form);
+ const name = String(formData.get('roomName') || '').trim();
+
+ if (!name) {
+ setError('Enter a room name.');
+
+ return;
+ }
+
+ try {
+ const room = await chatSocket.createRoom(name);
+
+ setRooms((currentRooms) => upsertRoom(currentRooms, room));
+ setIsCreatingRoom(false);
+ setError('');
+ form.reset();
+ globalThis.location.hash = encodeURIComponent(room.name);
+ setActiveRoomName(room.name);
+ } catch (error) {
+ setError(
+ error instanceof Error && error.message === duplicateRoomMessage
+ ? error.message
+ : 'Could not create that room.',
+ );
+ }
+ };
+
+ const handlePostMessage = async (event: SubmitEvent) => {
+ event.preventDefault();
+
+ const body = messageText.trim();
+
+ if (!activeRoomName || !body) {
+ return;
+ }
+
+ try {
+ await chatSocket.postMessage(activeRoomName, body);
+
+ setMessageText('');
+ } catch {
+ setError('Could not send your message.');
+ }
+ };
+
+ const handleLeaveActiveRoom = async () => {
+ if (!activeRoom) {
+ return;
+ }
+
+ try {
+ await chatSocket.leaveRoom(activeRoom.name);
+ globalThis.location.assign('/rooms');
+ } catch {
+ setError('Could not leave that room.');
+ }
+ };
+
+ return {
+ activeRoom,
+ activeRoomName,
+ displayedMessages,
+ error,
+ handleCreateRoom,
+ handleLeaveActiveRoom,
+ handlePostMessage,
+ isCreatingRoom,
+ joinedRooms,
+ messageText,
+ setIsCreatingRoom,
+ setMessageText,
+ username,
+ };
+}
+
+export default useChatPage;
diff --git a/src/frontend/src/useRoomsPage.ts b/src/frontend/src/useRoomsPage.ts
new file mode 100644
index 000000000..e58294a64
--- /dev/null
+++ b/src/frontend/src/useRoomsPage.ts
@@ -0,0 +1,255 @@
+import {
+ useCallback,
+ useEffect,
+ useMemo,
+ useState,
+ type SubmitEvent,
+} from 'react';
+import { getChatSocket } from './chatSocket';
+import type { Room } from './types';
+
+const usernameKey = 'chat.username';
+const duplicateRoomMessage = 'A room with that name already exists.';
+
+function getUsernameKey(username: string) {
+ return username.toLowerCase();
+}
+
+function getStoredUsername() {
+ const storedUsername = localStorage.getItem(usernameKey);
+
+ return storedUsername?.trim() || 'guest';
+}
+
+function useRoomsPage() {
+ const username = getStoredUsername();
+ const currentUsernameKey = getUsernameKey(username);
+ const chatSocket = useMemo(() => getChatSocket(username), [username]);
+ const [rooms, setRooms] = useState([]);
+ const [search, setSearch] = useState('');
+ const [isCreatingRoom, setIsCreatingRoom] = useState(false);
+ const [renameTarget, setRenameTarget] = useState(null);
+ const [renameName, setRenameName] = useState('');
+ const [renameDialogOpen, setRenameDialogOpen] = useState(false);
+ const [deleteTarget, setDeleteTarget] = useState(null);
+ const [deleteConfirmation, setDeleteConfirmation] = useState('');
+ const [deleteDialogOpen, setDeleteDialogOpen] = useState(false);
+ const [error, setError] = useState('');
+
+ const visibleRooms = useMemo(
+ () =>
+ rooms.filter((room) =>
+ room.name.toLowerCase().includes(search.trim().toLowerCase()),
+ ),
+ [rooms, search],
+ );
+
+ useEffect(() => {
+ let ignore = false;
+
+ chatSocket
+ .fetchRooms()
+ .then((nextRooms) => {
+ if (!ignore) {
+ setRooms(nextRooms);
+ }
+ })
+ .catch(() => {
+ if (!ignore) {
+ setError('Could not load rooms.');
+ }
+ });
+
+ const stopRoomUpdates = chatSocket.on('rooms:update', (nextRooms) => {
+ if (!ignore) {
+ setRooms(nextRooms);
+ }
+ });
+
+ return () => {
+ ignore = true;
+ stopRoomUpdates();
+ };
+ }, [chatSocket]);
+
+ const handleCreateRoom = async (event: SubmitEvent) => {
+ event.preventDefault();
+
+ const form = event.currentTarget;
+ const formData = new FormData(form);
+ const name = String(formData.get('roomName') || '').trim();
+
+ if (!name) {
+ setError('Enter a room name.');
+
+ return;
+ }
+
+ try {
+ const room = await chatSocket.createRoom(name);
+
+ setRooms((currentRooms) => {
+ const roomExists = currentRooms.some(
+ (currentRoom) => currentRoom.name === room.name,
+ );
+
+ if (roomExists) {
+ return currentRooms.map((currentRoom) =>
+ currentRoom.name === room.name ? room : currentRoom,
+ );
+ }
+
+ return [...currentRooms, room];
+ });
+ setIsCreatingRoom(false);
+ setError('');
+ form.reset();
+ } catch (error) {
+ setError(
+ error instanceof Error && error.message === duplicateRoomMessage
+ ? error.message
+ : 'Could not create that room.',
+ );
+ }
+ };
+
+ const canManageRoom = (room: Room) =>
+ room.creatorUsernameKey === currentUsernameKey;
+
+ const openRenameModal = (room: Room) => {
+ setRenameTarget(room);
+ setRenameName(room.name);
+ setRenameDialogOpen(true);
+ };
+
+ const handleRenameDialogOpenChange = useCallback((open: boolean) => {
+ setRenameDialogOpen(open);
+ if (!open) {
+ setRenameTarget(null);
+ setRenameName('');
+ }
+ }, []);
+
+ const renameRoom = async (roomToRename: Room, nextName: string) => {
+ const cleanNextName = nextName.trim();
+
+ if (!cleanNextName || cleanNextName === roomToRename.name) {
+ return null;
+ }
+
+ try {
+ const room = await chatSocket.renameRoom(
+ roomToRename.name,
+ cleanNextName,
+ );
+
+ setRooms((currentRooms) =>
+ currentRooms.map((currentRoom) =>
+ currentRoom.name === roomToRename.name ? room : currentRoom,
+ ),
+ );
+ setError('');
+
+ return room;
+ } catch {
+ setError('Could not rename that room.');
+
+ return null;
+ }
+ };
+
+ const handleRenameRoom = async (event: SubmitEvent) => {
+ event.preventDefault();
+
+ if (!renameTarget) {
+ return;
+ }
+
+ const room = await renameRoom(renameTarget, renameName);
+
+ if (room) {
+ setRenameDialogOpen(false);
+ }
+ };
+
+ const openDeleteModal = (room: Room) => {
+ setDeleteTarget(room);
+ setDeleteConfirmation('');
+ setDeleteDialogOpen(true);
+ };
+
+ const handleDeleteDialogOpenChange = useCallback((open: boolean) => {
+ setDeleteDialogOpen(open);
+ if (!open) {
+ setDeleteTarget(null);
+ setDeleteConfirmation('');
+ }
+ }, []);
+
+ const handleDeleteRoom = async (event: SubmitEvent) => {
+ event.preventDefault();
+
+ if (deleteConfirmation !== deleteTarget?.name) {
+ return;
+ }
+
+ try {
+ await chatSocket.deleteRoom(deleteTarget.name);
+ setRooms((currentRooms) =>
+ currentRooms.filter((room) => room.name !== deleteTarget.name),
+ );
+ setDeleteDialogOpen(false);
+ setError('');
+ } catch {
+ setError('Could not delete that room.');
+ }
+ };
+
+ const handleLeaveRoom = async (room: Room) => {
+ if (!room.joined) {
+ return;
+ }
+
+ try {
+ const nextRoom = await chatSocket.leaveRoom(room.name);
+
+ setRooms((currentRooms) =>
+ currentRooms.map((currentRoom) =>
+ currentRoom.name === room.name ? nextRoom : currentRoom,
+ ),
+ );
+ setError('');
+ } catch {
+ setError('Could not leave that room.');
+ }
+ };
+
+ return {
+ canManageRoom,
+ deleteConfirmation,
+ deleteDialogOpen,
+ deleteTarget,
+ error,
+ handleCreateRoom,
+ handleDeleteDialogOpenChange,
+ handleDeleteRoom,
+ handleLeaveRoom,
+ handleRenameDialogOpenChange,
+ handleRenameRoom,
+ isCreatingRoom,
+ openDeleteModal,
+ openRenameModal,
+ renameRoom,
+ renameDialogOpen,
+ renameName,
+ renameTarget,
+ search,
+ setDeleteConfirmation,
+ setIsCreatingRoom,
+ setRenameName,
+ setSearch,
+ visibleRooms,
+ };
+}
+
+export default useRoomsPage;
diff --git a/src/frontend/tsconfig.app.json b/src/frontend/tsconfig.app.json
new file mode 100644
index 000000000..7f42e5f7c
--- /dev/null
+++ b/src/frontend/tsconfig.app.json
@@ -0,0 +1,25 @@
+{
+ "compilerOptions": {
+ "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+ "target": "es2023",
+ "lib": ["ES2023", "DOM"],
+ "module": "esnext",
+ "types": ["vite/client"],
+ "skipLibCheck": true,
+
+ /* Bundler mode */
+ "moduleResolution": "bundler",
+ "allowImportingTsExtensions": true,
+ "verbatimModuleSyntax": true,
+ "moduleDetection": "force",
+ "noEmit": true,
+ "jsx": "react-jsx",
+
+ /* Linting */
+ "noUnusedLocals": true,
+ "noUnusedParameters": true,
+ "erasableSyntaxOnly": true,
+ "noFallthroughCasesInSwitch": true
+ },
+ "include": ["src"]
+}
diff --git a/src/frontend/tsconfig.json b/src/frontend/tsconfig.json
new file mode 100644
index 000000000..1ffef600d
--- /dev/null
+++ b/src/frontend/tsconfig.json
@@ -0,0 +1,7 @@
+{
+ "files": [],
+ "references": [
+ { "path": "./tsconfig.app.json" },
+ { "path": "./tsconfig.node.json" }
+ ]
+}
diff --git a/src/frontend/tsconfig.node.json b/src/frontend/tsconfig.node.json
new file mode 100644
index 000000000..d3c52ea64
--- /dev/null
+++ b/src/frontend/tsconfig.node.json
@@ -0,0 +1,24 @@
+{
+ "compilerOptions": {
+ "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
+ "target": "es2023",
+ "lib": ["ES2023"],
+ "module": "esnext",
+ "types": ["node"],
+ "skipLibCheck": true,
+
+ /* Bundler mode */
+ "moduleResolution": "bundler",
+ "allowImportingTsExtensions": true,
+ "verbatimModuleSyntax": true,
+ "moduleDetection": "force",
+ "noEmit": true,
+
+ /* Linting */
+ "noUnusedLocals": true,
+ "noUnusedParameters": true,
+ "erasableSyntaxOnly": true,
+ "noFallthroughCasesInSwitch": true
+ },
+ "include": ["vite.config.ts"]
+}
diff --git a/src/frontend/vite.config.ts b/src/frontend/vite.config.ts
new file mode 100644
index 000000000..9878d68c9
--- /dev/null
+++ b/src/frontend/vite.config.ts
@@ -0,0 +1,16 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+// https://vite.dev/config/
+export default defineConfig({
+ plugins: [react()],
+ server: {
+ proxy: {
+ '/api': 'http://localhost:3001',
+ '/ws': {
+ target: 'ws://localhost:3001',
+ ws: true,
+ },
+ },
+ },
+});