package servicecatalog

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

	"github.com/go-chi/chi/v5"
	"github.com/google/uuid"

	"nexavpn/backend/internal/apiutil"
)

type Handler struct {
	service *CatalogService
}

func NewHandler(service *CatalogService) *Handler {
	return &Handler{service: service}
}

func (h *Handler) List(w http.ResponseWriter, r *http.Request) {
	items, err := h.service.List(r.Context())
	if err != nil {
		apiutil.Error(w, http.StatusInternalServerError, "services_list_failed", "unable to list services")
		return
	}
	apiutil.JSON(w, http.StatusOK, items)
}

func (h *Handler) Create(w http.ResponseWriter, r *http.Request) {
	var input CreateRequest
	if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
		apiutil.Error(w, http.StatusBadRequest, "invalid_json", "invalid request body")
		return
	}

	item, err := h.service.Create(r.Context(), input)
	if err != nil {
		apiutil.Error(w, http.StatusInternalServerError, "service_create_failed", "unable to create service")
		return
	}
	apiutil.JSON(w, http.StatusCreated, item)
}

func (h *Handler) Update(w http.ResponseWriter, r *http.Request) {
	serviceID, err := uuid.Parse(chi.URLParam(r, "id"))
	if err != nil {
		apiutil.Error(w, http.StatusBadRequest, "invalid_service_id", "invalid service id")
		return
	}

	var input UpdateRequest
	if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
		apiutil.Error(w, http.StatusBadRequest, "invalid_json", "invalid request body")
		return
	}

	item, err := h.service.Update(r.Context(), serviceID, input)
	if err != nil {
		apiutil.Error(w, http.StatusInternalServerError, "service_update_failed", "unable to update service")
		return
	}
	apiutil.JSON(w, http.StatusOK, item)
}

func (h *Handler) Delete(w http.ResponseWriter, r *http.Request) {
	serviceID, err := uuid.Parse(chi.URLParam(r, "id"))
	if err != nil {
		apiutil.Error(w, http.StatusBadRequest, "invalid_service_id", "invalid service id")
		return
	}

	if err := h.service.Delete(r.Context(), serviceID); err != nil {
		apiutil.Error(w, http.StatusInternalServerError, "service_delete_failed", "unable to delete service")
		return
	}
	apiutil.JSON(w, http.StatusOK, map[string]any{"ok": true})
}