feat(service): implement user service

Author: wardvisual

services/user/routes.go

@@ -0,0 +1,60 @@
+package user
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/go-playground/validator/v10"
+	"github.com/gorilla/mux"
+	"github.com/wardvisual/go-store-api/types"
+	"github.com/wardvisual/go-store-api/utils"
+)
+
+type Handler struct {
+	store types.UserStore
+}
+
+func NewHandler(store types.UserStore) *Handler {
+	return &Handler{store}
+}
+
+func (h *Handler) RegisterRoutes(router *mux.Router) {
+	router.HandleFunc("/register", h.handleRegister).Methods("POST")
+}
+
+func (h *Handler) handleRegister(w http.ResponseWriter, r *http.Request) {
+	var user types.RegisterUserPayload
+
+	if err := utils.ParseJSON(r, &user); err != nil {
+		utils.WriteError(w, http.StatusBadRequest, err)
+		return
+	}
+
+	if err := utils.Validate.Struct(user); err != nil {
+		errors := err.(validator.ValidationErrors)
+		utils.WriteError(w, http.StatusBadRequest, fmt.Errorf("invalid payload: %v", errors))
+	}
+
+	// TODO: Check if user exists
+	// ...
+
+	hashedPassword, err := utils.HashPassword(user.Password)
+	if err != nil {
+		utils.WriteError(w, http.StatusInternalServerError, err)
+		return
+	}
+
+	err = h.store.Create(types.User{
+		FirstName: user.FirstName,
+		LastName:  user.LastName,
+		Email:     user.Email,
+		Password:  hashedPassword,
+	})
+
+	if err != nil {
+		utils.WriteError(w, http.StatusInternalServerError, err)
+		return
+	}
+
+	utils.WriteJSON(w, http.StatusCreated, nil)
+}