package auth

import (
	"RenewCMS/api/pkg/apperr"
	"RenewCMS/api/pkg/claims"
	"RenewCMS/api/pkg/publicuser"
	"RenewCMS/internal/domain/user"
	"RenewCMS/internal/infrastructure/useCases"
	"encoding/json"
	"errors"
	"net/http"
)

type MeHandler struct {
	GetUseCase *useCases.GetUserUseCase
}

func NewMeHandler(getUser *useCases.GetUserUseCase) *MeHandler {
	return &MeHandler{
		GetUseCase: getUser,
	}
}

func (h *MeHandler) Me(w http.ResponseWriter, r *http.Request) {
	userId, ok := claims.UserId(r)
	if !ok {
		http.Error(w, apperr.UnauthorizedErrorMessage, http.StatusUnauthorized)
		return
	}

	loadedUser, err := h.GetUseCase.GetUser(userId)
	if err != nil {
		if errors.Is(err, user.ErrUserNotFound) {
			http.Error(w, apperr.UnauthorizedErrorMessage, http.StatusUnauthorized)
			return
		}
		http.Error(w, "Internal server error", http.StatusInternalServerError)
		return
	}

	body, err := json.Marshal(publicuser.New(loadedUser))
	if err != nil {
		http.Error(w, "Internal server error", http.StatusInternalServerError)
		return
	}
	w.Header().Set("Cache-Control", "no-store")
	_, _ = w.Write(body)
}