import Presentations from '/imports/api/presentations';
import { isScreenBroadcasting, isCameraAsContentBroadcasting } from '/imports/ui/components/screenshare/service';
import Settings from '/imports/ui/services/settings';
import getFromUserSettings from '/imports/ui/services/users-settings';
import {
  isExternalVideoEnabled, isScreenSharingEnabled, isCameraAsContentEnabled, isPresentationEnabled,
} from '/imports/ui/services/features';
import { ACTIONS } from '../layout/enums';
import UserService from '/imports/ui/components/user-list/service';
import NotesService from '/imports/ui/components/notes/service';
import { getVideoUrl } from '/imports/ui/components/external-video-player/service';
import VideoStreams from '/imports/api/video-streams';
import Auth from '/imports/ui/services/auth/index';

const LAYOUT_CONFIG = Meteor.settings.public.layout;
const KURENTO_CONFIG = Meteor.settings.public.kurento;
const PRESENTATION_CONFIG = Meteor.settings.public.presentation;

const getPresentationInfo = () => {
  const currentPresentation = Presentations.findOne({
    current: true,
  });

  return {
    current_presentation: (currentPresentation != null),
  };
};

function shouldShowWhiteboard() {
  return true;
}

function shouldShowScreenshare() {
  const { viewScreenshare } = Settings.dataSaving;
  return (isScreenSharingEnabled() || isCameraAsContentEnabled())
    && (viewScreenshare || UserService.isUserPresenter())
    && (isScreenBroadcasting() || isCameraAsContentBroadcasting());
}

function shouldShowExternalVideo() {
  return isExternalVideoEnabled() && !!getVideoUrl();
}

function shouldShowSharedNotes() {
  return NotesService.isSharedNotesPinned();
}

function shouldShowOverlay() {
  return getFromUserSettings('bbb_enable_video', KURENTO_CONFIG.enableVideo);
}

const setPresentationIsOpen = (layoutContextDispatch, value) => {
  layoutContextDispatch({
    type: ACTIONS.SET_PRESENTATION_IS_OPEN,
    value,
  });
};

const isThereWebcamOn = (meetingID) => {
  return VideoStreams.find({
    meetingId: meetingID
  }).count() > 0;
}

const buildLayoutWhenPresentationAreaIsDisabled = (layoutContextDispatch) => {
  const isSharingVideo = getVideoUrl();
  const isSharedNotesPinned = NotesService.isSharedNotesPinned();
  const hasScreenshare = isScreenSharingEnabled();
  const isThereWebcam = isThereWebcamOn(Auth.meetingID);
  const isGeneralMediaOff = !hasScreenshare && !isSharedNotesPinned && !isSharingVideo
  const webcamIsOnlyContent = isThereWebcam && isGeneralMediaOff;
  const isThereNoMedia = !isThereWebcam && isGeneralMediaOff;
  const isPresentationDisabled = !isPresentationEnabled();

  if (isPresentationDisabled && (webcamIsOnlyContent || isThereNoMedia)) {
    setPresentationIsOpen(layoutContextDispatch, false);
  }

}

export default {
  buildLayoutWhenPresentationAreaIsDisabled,
  getPresentationInfo,
  shouldShowWhiteboard,
  shouldShowScreenshare,
  shouldShowExternalVideo,
  shouldShowOverlay,
  isScreenBroadcasting,
  isCameraAsContentBroadcasting,
  setPresentationIsOpen,
  shouldShowSharedNotes,
};