Move create user to service

src/modules/auth/actions/createUser.ts

@@ -5,30 +5,7 @@ import { cookies } from "next/headers";
 import { redirect } from "next/navigation";
 import { hashPassword } from "../utils/hashPassword";
 import { createJwtToken } from "../utils/createJwtToken";
-
-/**
- * Interface for the schema of a new user.
- */
-interface CreateUserSchema {
-	name: string;
-	email: string;
-	password: string;
-}
-
-/**
- * Validation schema for creating a user.
- */
-const createUserSchema = z
-	.object({
-		name: z.string(),
-		email: z.string().email(),
-		password: z.string().min(6),
-		passwordConfirmation: z.string().optional(),
-	})
-	.refine((data) => data.password === data.passwordConfirmation, {
-		message: "Password confirmation must match the password",
-		path: ["passwordConfirmation"],
-	});
+import createUser from "../services/createUser";
 
 /**
  * Creates a new user in the system.
@@ -36,7 +13,7 @@ const createUserSchema = z
  * @param formData - The form data containing user details.
  * @returns An object indicating the result of the operation.
  */
-export default async function createUser(formData: FormData) {
+export default async function createUserAction(formData: FormData) {
 	//TODO: Add Throttling
 	//TODO: Add validation check if the user is already logged in
 
@@ -44,49 +21,12 @@ export default async function createUser(formData: FormData) {
 		const parsedData = {
 			email: formData.get("email")?.toString() ?? "",
 			name: formData.get("name")?.toString() ?? "",
-			password: formData.get("password")?.toString() ?? "",
-			passwordConfirmation: formData
-				.get("passwordConfirmation")
-				?.toString(),
+			plainPassword: formData.get("password")?.toString() ?? "",
+			plainPasswordConfirmation:
+				formData.get("passwordConfirmation")?.toString() ?? "",
 		};
-		const validatedFields = createUserSchema.safeParse(parsedData);
-
-		if (!validatedFields.success) {
-			return {
-				success: false,
-				error: {
-					message: "",
-					errors: validatedFields.error.flatten().fieldErrors,
-				},
-			};
-		}
-
-		const existingUser = await prisma.user.findUnique({
-			where: { email: validatedFields.data.email },
-		});
-
-		if (existingUser) {
-			return {
-				success: false,
-				error: {
-					message: "",
-					errors: {
-						email: ["Email already exists"],
-					},
-				},
-			};
-		}
-
-		const user = await prisma.user.create({
-			data: {
-				name: validatedFields.data.name,
-				email: validatedFields.data.email,
-				passwordHash: await hashPassword(validatedFields.data.password),
-			},
-		});
-
-		const token = createJwtToken({ id: user.id });
-		cookies().set("token", token);
+		await createUser(parsedData);
+		redirect("/dashboard");
 	} catch (e: unknown) {
 		// Handle unexpected errors
 		console.error(e);
@@ -100,6 +40,4 @@ export default async function createUser(formData: FormData) {
 			},
 		};
 	}
-
-	redirect("/dashboard");
 }

src/modules/auth/formSchemas/CreateUserFormSchema.ts

@@ -0,0 +1,23 @@
+import {z} from "zod"
+
+/**
+ * Interface for the schema of a new user.
+ */
+export interface CreateUserSchema {
+	name: string;
+	email: string;
+	plainPassword: string;
+    plainPasswordConfirmation: string;
+}
+
+export const createUserSchema = z
+	.object({
+		name: z.string(),
+		email: z.string().email(),
+		password: z.string().min(6),
+		passwordConfirmation: z.string().optional(),
+	})
+	.refine((data) => data.password === data.passwordConfirmation, {
+		message: "Password confirmation must match the password",
+		path: ["passwordConfirmation"],
+	});

src/modules/auth/services/createUser.ts

@@ -0,0 +1,54 @@
+import DashboardError from "@/modules/dashboard/errors/DashboardError";
+import {
+	CreateUserSchema,
+	createUserSchema,
+} from "../formSchemas/CreateUserFormSchema";
+import mapObjectToFirstValue from "@/utils/mapObjectToFirstValue";
+import db from "@/core/db";
+import AuthError from "../error/AuthError";
+import hashPassword from "../utils/hashPassword";
+import { createJwtToken } from "../utils/createJwtToken";
+import { cookies } from "next/headers";
+
+export default async function createUser(userData: CreateUserSchema) {
+	const validatedFields = createUserSchema.safeParse(userData);
+
+	//Validate form input
+	if (!validatedFields.success) {
+		throw new DashboardError({
+			errorCode: "INVALID_FORM_DATA",
+			formErrors: mapObjectToFirstValue(
+				validatedFields.error.flatten().fieldErrors
+			),
+		});
+	}
+
+	//Check email exists    
+	if (
+		await db.user.findFirst({
+			where: { email: validatedFields.data.email },
+		})
+	) {
+		throw new AuthError({
+			errorCode: "USER_ALREADY_EXISTS",
+			message: "This email already exists",
+		});
+	}
+
+	//Create user
+	const user = await db.user.create({
+		data: {
+			name: validatedFields.data.name,
+			email: validatedFields.data.email,
+			passwordHash: await hashPassword(validatedFields.data.password),
+		},
+	});
+
+	//Set token
+	const token = createJwtToken({ id: user.id });
+	cookies().set("token", token);
+
+	return {
+		token,
+	};
+}