package auth

import (
	"encoding/json"
	"errors"
	"fmt"
	"net/http"

	"api_yal/internal/service"

	"github.com/go-playground/validator/v10"
)

// AuthHandler обработчик для аутентификации
type AuthHandler struct {
	accountService service.AccountService
	validator      *validator.Validate
}

// NewAuthHandler создает новый экземпляр AuthHandler
func NewAuthHandler(accountService service.AccountService) *AuthHandler {
	return &AuthHandler{
		accountService: accountService,
		validator:      validator.New(),
	}
}

// Register регистрация аккаунта пользователя
func (h *AuthHandler) Register(w http.ResponseWriter, r *http.Request) {

	var req RegisterRequest
	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
		http.Error(w, "Invalid request body", http.StatusBadRequest)
		return
	}

	if err := h.validator.Struct(req); err != nil {
		var invalidValidationError *validator.InvalidValidationError
		if errors.As(err, &invalidValidationError) {
			http.Error(w, "Invalid request", http.StatusBadRequest)
			return
		}

		var errs []string
		for _, err := range err.(validator.ValidationErrors) {
			errs = append(errs, fmt.Sprintf("field %s is invalid: %s", err.Field(), err.Tag()))
		}

		w.WriteHeader(http.StatusBadRequest)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"error":  "Validation failed",
			"fields": errs,
		})
		return
	}

	

}