userLogin.go

func Login(w http.ResponseWriter, r *http.Request) {
	user := &models.User{}
	err := json.NewDecoder(r.Body).Decode(user) 
	if err != nil {
		var resp = map[string]interface{}{"status": false, "message": "Invalid request"}
		json.NewEncoder(w).Encode(resp)
		return
	}
	resp := FindOne(user.Email, user.Password)
	json.NewEncoder(w).Encode(resp)
}


func FindOne(email, password string) map[string]interface{} {
	user := &models.User{}

	if err := db.Where("Email = ?", email).First(user).Error; err != nil {
		var resp = map[string]interface{}{"status": false, "message": "Email address not found"}
		return resp
	}
	expiresAt := time.Now().Add(time.Minute * 100000).Unix()

	errf := bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(password))
	if errf != nil && errf == bcrypt.ErrMismatchedHashAndPassword { //Password does not match!
		var resp = map[string]interface{}{"status": false, "message": "Invalid login credentials. Please try again"}
		return resp
	}

	tk := &models.Token{
		UserID: user.ID,
		Name:   user.Name,
		Email:  user.Email,
		StandardClaims: &jwt.StandardClaims{
			ExpiresAt: expiresAt,
		},
	}

	token := jwt.NewWithClaims(jwt.GetSigningMethod("HS256"), tk)

	tokenString, error := token.SignedString([]byte("secret"))
	if error != nil {
		fmt.Println(error)
	}

	var resp = map[string]interface{}{"status": false, "message": "logged in"}
	resp["token"] = tokenString //Store the token in the response
	resp["user"] = user
	return resp
}