From b3fd3ade5c0e9c243cb4548c4318fe45faf3a994 Mon Sep 17 00:00:00 2001 From: Moon Patel Date: Tue, 27 Jun 2023 15:44:29 +0530 Subject: [PATCH] backend integration --- backend/.gitignore | 2 + backend/app.js | 65 ++ backend/events.json | 1 + backend/models/user.js | 40 ++ backend/package-lock.json | 1203 ++++++++++++++++++++++++++++++++++++ backend/package.json | 23 + backend/routes/auth.js | 79 +++ backend/routes/user.js | 1 + backend/util/auth.js | 53 ++ backend/util/errors.js | 16 + backend/util/validation.js | 21 + 11 files changed, 1504 insertions(+) create mode 100644 backend/.gitignore create mode 100644 backend/app.js create mode 100644 backend/events.json create mode 100644 backend/models/user.js create mode 100644 backend/package-lock.json create mode 100644 backend/package.json create mode 100644 backend/routes/auth.js create mode 100644 backend/routes/user.js create mode 100644 backend/util/auth.js create mode 100644 backend/util/errors.js create mode 100644 backend/util/validation.js diff --git a/backend/.gitignore b/backend/.gitignore new file mode 100644 index 0000000..37d7e73 --- /dev/null +++ b/backend/.gitignore @@ -0,0 +1,2 @@ +node_modules +.env diff --git a/backend/app.js b/backend/app.js new file mode 100644 index 0000000..850cbbc --- /dev/null +++ b/backend/app.js @@ -0,0 +1,65 @@ +const express = require("express"); +const bodyParser = require("body-parser"); +const cors = require("cors"); +const authRoutes = require("./routes/auth"); +const mongoose = require("mongoose"); + +mongoose + .connect("mongodb://127.0.0.1:27017/test") + .then((res) => console.log("Connected to MongoDB")) + .catch((err) => console.log("Error in connecting to database")); + +const app = express(); +const http = require("http"); +const server = http.createServer(app); +const { Server } = require("socket.io"); +const io = new Server(server, { cors: { origin: "*" } }); + +io.on("connection", (socket) => { + // console.log("Connected: ", socket.data); + socket.broadcast.emit("game", "emitting..."); + socket.emit("game", "Welcome"); + + socket.on("join-room", async (data) => { + if (data?.roomid) await socket.join(roomid); + else socket.emit("error", "Room id not received"); + }); + + socket.on("play", (data) => { + console.log(data) + let { fromRow, fromCol, toRow, toCol, room } = data; + fromRow = 7 - fromRow; + fromCol = 7 - fromCol; + toRow = 7 - toRow; + toCol = 7 - toCol; + socket.to(room).emit("play", { fromCol, fromRow, toCol, toRow }); + socket.broadcast.emit("play", { fromCol, fromRow, toCol, toRow }); + }); +}); + +app.use(cors({ origin: "*" })); +app.use(bodyParser.json()); +app.use((req, res, next) => { + res.setHeader("Access-Control-Allow-Origin", "*"); + res.setHeader("Access-Control-Allow-Methods", "GET,POST,PATCH,DELETE"); + res.setHeader("Access-Control-Allow-Headers", "Content-Type,Authorization"); + next(); +}); + +app.use((req, res, next) => { + console.log(req.url); + next(); +}); + +// app.use("/", (req, res, next) => res.send('Hello')); +app.use("/api/auth", authRoutes); + +app.use((error, req, res, next) => { + const status = error.status || 500; + const message = error.message || "Something went wrong."; + res.status(status).json({ message: message }); +}); + +server.listen(8080, () => { + console.log("Listening on server 8080"); +}); diff --git a/backend/events.json b/backend/events.json new file mode 100644 index 0000000..210b635 --- /dev/null +++ b/backend/events.json @@ -0,0 +1 @@ +{"events":[{"title":"new event","image":"https://images.squarespace-cdn.com/content/v1/56d082a760b5e95c074d11a0/8ce30633-23f2-4dc9-b301-c251cbf26d02/Mercedes+Benz+Oscar+Party?format=2500w","date":"2023-05-03","description":"hello","id":"1f24eb47-5019-4a07-9c3c-1ba18b591800"},{"title":"concert","image":"https://business.twitter.com/content/dam/business-twitter/insights/may-2018/event-targeting.png.twimg.1920.png","date":"2023-05-04","description":"lorem","id":"2035d991-0e72-456c-b6df-1aa9774caaaa"}],"users":[{"email":"m@g.com","password":"$2a$12$.GW99UfbOfISG6mQHN.8MOXtYXePsWH592XudNWU9Df9tYEV.K.QG","id":"2a744c6d-da1a-4938-ab45-144b567d5187"},{"email":"moon@gmails.com","password":"$2a$12$o7p.OS1vA66yBlkOsh.xV.ifDsItbSeBOTaN5VgjYHIUVtDvP3nbu","id":"8f394056-592e-45fc-9808-e923e1a1d60a"},{"email":"moon@gmail.com","password":"$2a$12$3t8sENEvXNvC1XeKhMsJFOsaU0vVh27wnY4hHIPlXzzOIAwMiSSJC","id":"421e3728-ac58-4fc1-86d5-70b618d01f9b"},{"email":"moonpatel2003@gmail.com","password":"$2a$12$QxG6hh0vFudhlsX3MJvXLuVfnFKBAPd15Bei42MNB2v69BwwGT3oq","id":"d77a0a0b-2b82-489e-9782-ccac490db36d"}]} \ No newline at end of file diff --git a/backend/models/user.js b/backend/models/user.js new file mode 100644 index 0000000..bb2097c --- /dev/null +++ b/backend/models/user.js @@ -0,0 +1,40 @@ +const { Schema, default: mongoose } = require("mongoose"); +const { String, ObjectId } = Schema.Types; + +const userSchema = new Schema( + { + username: { + type: String, + unique: true, + required: true, + }, + email: { + type: String, + unique: true, + required: true, + }, + password_hash: { + type: String, + required: true, + }, + fname: String, + lname: String, + location: String, + country: String, + friends: { + type: [ObjectId], + ref: "User", + }, + }, + { + virtuals: { + fullName: { + get() { + return this.fname + " " + this.lname; + }, + }, + }, + } +); + +module.exports.User = mongoose.model("User", userSchema); diff --git a/backend/package-lock.json b/backend/package-lock.json new file mode 100644 index 0000000..4cdb6cc --- /dev/null +++ b/backend/package-lock.json @@ -0,0 +1,1203 @@ 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"^9.0.0" + } +} diff --git a/backend/routes/auth.js b/backend/routes/auth.js new file mode 100644 index 0000000..5b71b58 --- /dev/null +++ b/backend/routes/auth.js @@ -0,0 +1,79 @@ +const express = require("express"); +const { createJSONToken, isValidPassword, validateJSONToken, generatePasswordHash } = require("../util/auth"); +const { isValidEmail, isValidText } = require("../util/validation"); +const { User } = require("../models/user"); + +const router = express.Router(); + +router.post("/signup", async (req, res, next) => { + console.log(req.body); + const data = { email: req.body.email, password: req.body.password, username: req.body.username }; + let errors = {}; + + if (!isValidEmail(data.email)) { + errors.email = "Invalid email."; + } else { + try { + let user = await User.findOne({ email: data.email }); + if (user) { + errors.email = "Email exists already."; + } + } catch (error) { + throw error; + } + } + + if (!isValidText(data.password, 6)) { + errors.password = "Password must be at least 6 characters long."; + } + + let user = await User.findOne({ username: data.username }); + if (user) errors.username = "Username already exists"; + + if (Object.keys(errors).length > 0) { + return res.status(422).json({ + message: "User signup failed due to validation errors.", + errors, + }); + } + + try { + let userData = { + email: data.email, + username: data.username, + password_hash: await generatePasswordHash(data.password), + }; + userDoc = new User(userData); + await userDoc.save(); + const authToken = createJSONToken(userDoc.id); + res.status(201).json({ message: "User created.", user: userDoc, token: authToken }); + } catch (error) { + next(error); + } +}); + +router.post("/login", async (req, res) => { + const username = req.body.username; + const password = req.body.password; + + let user; + try { + user = await User.findOne({ username }); + if (!user) return res.status(401).json({ message: "User not found" }); + } catch (error) { + return res.status(401).json({ message: "AutheFntication failed." }); + } + + const pwIsValid = await isValidPassword(password, user.password_hash); + if (!pwIsValid) { + return res.status(422).json({ + message: "Invalid credentials.", + errors: { credentials: "Invalid email or password entered." }, + }); + } + + const token = createJSONToken(user.id); + return res.json({ token }); +}); + +module.exports = router; diff --git a/backend/routes/user.js b/backend/routes/user.js new file mode 100644 index 0000000..32d9dd3 --- /dev/null +++ b/backend/routes/user.js @@ -0,0 +1 @@ +const express = require("express").Router(); \ No newline at end of file diff --git a/backend/util/auth.js b/backend/util/auth.js new file mode 100644 index 0000000..e8fa939 --- /dev/null +++ b/backend/util/auth.js @@ -0,0 +1,53 @@ +const { sign, verify } = require("jsonwebtoken"); +const { compare, hash, genSalt } = require("bcryptjs"); +const { NotAuthError } = require("./errors"); + +const KEY = "supersecret"; + +async function generatePasswordHash(password) { + const password_hash = await hash(password, await genSalt(10)); + return password_hash; +} + +function createJSONToken(email) { + return sign({ email }, KEY, { expiresIn: "1h" }); +} + +function validateJSONToken(token) { + return verify(token, KEY); +} + +function isValidPassword(password, storedPassword) { + return compare(password, storedPassword); +} + +function checkAuthMiddleware(req, res, next) { + if (req.method === "OPTIONS") { + return next(); + } + if (!req.headers.authorization) { + console.log("NOT AUTH. AUTH HEADER MISSING."); + return next(new NotAuthError("Not authenticated.")); + } + const authFragments = req.headers.authorization.split(" "); + + if (authFragments.length !== 2) { + console.log("NOT AUTH. AUTH HEADER INVALID."); + return next(new NotAuthError("Not authenticated.")); + } + const authToken = authFragments[1]; + try { + const validatedToken = validateJSONToken(authToken); + req.token = validatedToken; + } catch (error) { + console.log("NOT AUTH. TOKEN INVALID."); + return next(new NotAuthError("Not authenticated.")); + } + next(); +} + +exports.createJSONToken = createJSONToken; +exports.validateJSONToken = validateJSONToken; +exports.isValidPassword = isValidPassword; +exports.checkAuth = checkAuthMiddleware; +exports.generatePasswordHash = generatePasswordHash; diff --git a/backend/util/errors.js b/backend/util/errors.js new file mode 100644 index 0000000..0ab897b --- /dev/null +++ b/backend/util/errors.js @@ -0,0 +1,16 @@ +class NotFoundError { + constructor(message) { + this.message = message; + this.status = 404; + } +} + +class NotAuthError { + constructor(message) { + this.message = message; + this.status = 401; + } +} + +exports.NotFoundError = NotFoundError; +exports.NotAuthError = NotAuthError; \ No newline at end of file diff --git a/backend/util/validation.js b/backend/util/validation.js new file mode 100644 index 0000000..bb39601 --- /dev/null +++ b/backend/util/validation.js @@ -0,0 +1,21 @@ +function isValidText(value, minLength = 1) { + return value && value.trim().length >= minLength; +} + +function isValidDate(value) { + const date = new Date(value); + return value && date !== 'Invalid Date'; +} + +function isValidImageUrl(value) { + return value && value.startsWith('http'); +} + +function isValidEmail(value) { + return value && value.includes('@'); +} + +exports.isValidText = isValidText; +exports.isValidDate = isValidDate; +exports.isValidImageUrl = isValidImageUrl; +exports.isValidEmail = isValidEmail; \ No newline at end of file