add register controller and bug fixes

src/controllers/user.controller.js

@@ -1,10 +1,73 @@
 import { asyncHandler } from "../utils/asyncHandler.js";
-
+import {ApiError} from "../utils/ApiError.js"
+import { User} from "../models/user.model.js"
+import {uploadOnCloudinary} from "../utils/cloudinary.js"
+import { ApiResponse } from "../utils/ApiResponse.js";
 
 const registerUser = asyncHandler( async (req, res) => {
-    res.status(500).json({
-        message: "chai aur code"
+    // get user details from frontend
+    // validation - not empty
+    // check if user already exists: username, email
+    // check for images, check for avatar
+    // upload them to cloudinary, avatar
+    // create user object - create entry in db
+    // remove password and refresh token field from response
+    // check for user creation
+    // return res
+
+
+    const {fullName, email, username, password } = req.body
+    console.log("email: ", email);
+
+    if (
+        [fullName, email, username, password].some((field) => field?.trim() === "")
+    ) {
+        throw new ApiError(400, "All fields are required")
+    }
+
+    const existedUser = User.findOne({
+        $or: [{ username }, { email }]
+    })
+
+    if (existedUser) {
+        throw new ApiError(409, "User with email or username already exists")
+    }
+
+    const avatarLocalPath = req.files?.avatar[0]?.path;
+    const coverImageLocalPath = req.files?.coverImage[0]?.path;
+
+    if (!avatarLocalPath) {
+        throw new ApiError(400, "Avatar file is required")
+    }
+
+    const avatar = await uploadOnCloudinary(avatarLocalPath)
+    const coverImage = await uploadOnCloudinary(coverImageLocalPath)
+
+    if (!avatar) {
+        throw new ApiError(400, "Avatar file is required")
+    }
+
+    const user = await User.create({
+        fullName,
+        avatar: avatar.url,
+        coverImage: coverImage?.url || "",
+        email, 
+        password,
+        username: username.toLowerCase()
     })
+
+    const createdUser = await User.findById(user._id).select(
+        "-password -refreshToken"
+    )
+
+    if (!createdUser) {
+        throw new ApiError(500, "Something went wrong while registering the user")
+    }
+
+    return res.status(201).json(
+        new ApiResponse(200, createdUser, "User registered Successfully")
+    )
+
 } )
 
 

src/models/user.model.js

@@ -55,7 +55,7 @@ const userSchema = new Schema(
 userSchema.pre("save", async function (next) {
     if(!this.isModified("password")) return next();
 
-    this.password = bcrypt.hash(this.password, 10)
+    this.password = await bcrypt.hash(this.password, 10)
     next()
 })
 

src/routes/user.routes.js

@@ -1,9 +1,23 @@
 import { Router } from "express";
 import { registerUser } from "../controllers/user.controller.js";
+import {upload} from "../middlewares/multer.middleware.js"
+
 
 const router = Router()
 
-router.route("/register").post(registerUser)
+router.route("/register").post(
+    upload.fields([
+        {
+            name: "avatar",
+            maxCount: 1
+        }, 
+        {
+            name: "coverImage",
+            maxCount: 1
+        }
+    ]),
+    registerUser
+    )
 
 
 export default router

src/utils/ApiResponse.js

@@ -5,4 +5,6 @@ class ApiResponse {
         this.message = message
         this.success = statusCode < 400
     }
-}
+}
+
+export { ApiResponse }