add controller and service for create user

src/modules/user/controller/createUser.controller.ts

@@ -0,0 +1,56 @@
+import { Prisma } from "@prisma/client";
+import { Context } from "elysia";
+import { createUserSchema } from "../user.schema";
+import { createUserService } from "../services/createUser.service";
+import { PrismaErrorTypes } from "../../../utils/databases/prisma/error/types";
+import {
+  returnErrorResponse,
+  returnWriteResponse,
+} from "../../../helpers/callback/httpResponse";
+
+/**
+ * @function createUser
+ * @description Creates a new user in the database.
+ *
+ * @param {Context & { body: Prisma.UserCreateInput }} ctx - The context object containing the request body.
+ * @param {Prisma.UserCreateInput} ctx.body - The user data to be created.
+ *
+ * @returns {Promise<Object>} A response object indicating success or failure.
+ * @throws {Object} An error response object if validation fails or an error occurs during user creation.
+ *
+ * @example
+ * Request route: POST /users
+ * Request body:
+ * {
+ *   "username": "john_doe",
+ *   "email": "john@example.com",
+ *   "password": "password123"
+ * }
+ */
+export const createUser = async (
+  ctx: Context & { body: Prisma.UserCreateInput }
+) => {
+  // Validate the user input using a validation schema
+  const { error } = createUserSchema.validate(ctx.body);
+  if (error)
+    return returnErrorResponse(ctx.set, 400, "Invalid user input", error);
+
+  // Create the user in the database using the service
+  createUserService(ctx.body)
+    .then((result) => {
+      return returnWriteResponse(
+        ctx.set,
+        201,
+        "User created successfully",
+        result
+      );
+    })
+    .catch((error: PrismaErrorTypes) => {
+      return returnErrorResponse(
+        ctx.set,
+        error.status,
+        error.message,
+        error.details
+      );
+    });
+};