package svc

import (
	"errors"
	"net/http"
	"net/url"

	revactx "github.com/cs3org/reva/pkg/ctx"
	"github.com/go-chi/chi/v5"
	"github.com/go-chi/render"
	"github.com/owncloud/ocis/graph/pkg/identity"
	"github.com/owncloud/ocis/graph/pkg/service/v0/errorcode"
	//msgraph "github.com/owncloud/open-graph-api-go" // FIXME needs OnPremisesSamAccountName, OnPremisesDomainName and AdditionalData
)

// GetMe implements the Service interface.
func (g Graph) GetMe(w http.ResponseWriter, r *http.Request) {

	u, ok := revactx.ContextGetUser(r.Context())
	if !ok {
		g.logger.Error().Msg("user not in context")
		errorcode.ServiceNotAvailable.Render(w, r, http.StatusInternalServerError, "user not in context")
		return
	}

	g.logger.Info().Interface("user", u).Msg("User in /me")

	me := identity.CreateUserModelFromCS3(u)

	render.Status(r, http.StatusOK)
	render.JSON(w, r, me)
}

// GetUsers implements the Service interface.
// TODO use cs3 api to look up user
func (g Graph) GetUsers(w http.ResponseWriter, r *http.Request) {
	users, err := g.identityBackend.GetUsers(r.Context(), r.URL.Query())
	if err != nil {
		var errcode errorcode.Error
		if errors.As(err, &errcode) {
			errcode.Render(w, r)
		} else {
			errorcode.GeneralException.Render(w, r, http.StatusInternalServerError, err.Error())
		}
	}
	render.Status(r, http.StatusOK)
	render.JSON(w, r, &listResponse{Value: users})
}

// GetUser implements the Service interface.
func (g Graph) GetUser(w http.ResponseWriter, r *http.Request) {
	userID := chi.URLParam(r, "userID")
	userID, err := url.PathUnescape(userID)
	if err != nil {
		errorcode.InvalidRequest.Render(w, r, http.StatusBadRequest, "unescaping user id failed")
	}

	if userID == "" {
		errorcode.InvalidRequest.Render(w, r, http.StatusBadRequest, "missing user id")
		return
	}

	user, err := g.identityBackend.GetUser(r.Context(), userID)

	if err != nil {
		var errcode errorcode.Error
		if errors.As(err, &errcode) {
			errcode.Render(w, r)
		} else {
			errorcode.GeneralException.Render(w, r, http.StatusInternalServerError, err.Error())
		}
	}

	render.Status(r, http.StatusOK)
	render.JSON(w, r, user)
}