User Authentication In E-Auc

In this blog we'll explore how we'll be implementing the user authentication in our application (e-auction).

Recently i have been using few application that have passwordless authentication and i sort of like that. I dont have to remember password for different applications. what they do is either they'll send a magic link on the email or an otp on phone number, since i believe most of our users would be using mobile phone we should send the otp in phone number and since I'll have to spend money to send text msg a better alternative would be sending the whatsapp message.

So we'll be setting up few extra services in this blog. that include.

• Making a notification service, Rabbit MQ or kafka.

• SMTP client to send email.

• Whatsapp to send text message.

• Redis server to store data in cache.

First lets start with creating user and sending them email without redis and notification service. So we'll create a CreateUser function in handler and in Service.

// cmd/routes.go

package main

import (
	"fmt"
	"net/http"
)

func (h *ChiHandler) CreateUser(w http.ResponseWriter, r *http.Request) {
	// TODO: Create a new user from the request body and return 201 status code.
	// Check the request body for required fields and validate them.
	var createUserRequest CreateUserRequest
	err := json.NewDecoder(r.Body).Decode(&createUserRequest)
	if err != nil {
		http.Error(w, "Invalid request body", http.StatusBadRequest)
		return
	}
	err = createUserRequest.Validate()
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
	fmt.Fprintln(w, "UnImplemented: Create User")
}

// service/user/user.go

NOTE: This blog is in implementation state. I am update this as i write code.