users/internal/handlers/user_handler.go

package handlers

import (
	"github.com/CesarSSH/cqrs-api-go/internal/command"
	"github.com/CesarSSH/cqrs-api-go/internal/service"

	"encoding/json"
	"net/http"
)

type UserHandler struct {
	commandService *service.UserCommandService
	queryService   *service.UserQueryService
}

func NewUserHandler(cmdService *service.UserCommandService, qryService *service.UserQueryService) *UserHandler {
	return &UserHandler{
		commandService: cmdService,
		queryService:   qryService,
	}
}

func (h *UserHandler) CreateUser(w http.ResponseWriter, r *http.Request) {
	var cmd command.CreateUserCommand
	if err := json.NewDecoder(r.Body).Decode(&cmd); err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
	// Llamar a la validación
	if err := cmd.Validate(); err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}

	if err := h.commandService.CreateUser(&cmd); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.WriteHeader(http.StatusCreated)
	// Enviar un mensaje de éxito como respuesta
	response := map[string]string{"message": "Usuario creado"}
	json.NewEncoder(w).Encode(response)
}

func (h *UserHandler) GetUsers(w http.ResponseWriter, r *http.Request) {
	users, err := h.queryService.GetUsers()
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(users)
}