import React, { Component } from 'react';
import PropTypes from 'prop-types';
import { Session } from 'meteor/session';
import BreakoutJoinConfirmationContainer from '/imports/ui/components/breakout-join-confirmation/container';
import BreakoutService from '../service';

const BREAKOUT_MODAL_DELAY = 200;

const propTypes = {
  lastBreakoutReceived: PropTypes.shape({
    breakoutUrlData: PropTypes.object.isRequired,
  }),
  breakoutRoomsUserIsIn: PropTypes.shape({
    sequence: PropTypes.number.isRequired,
  }),
  breakouts: PropTypes.arrayOf(PropTypes.shape({
    freeJoin: PropTypes.bool.isRequired,
  })),
};

const defaultProps = {
  lastBreakoutReceived: undefined,
  breakoutRoomsUserIsIn: undefined,
  breakouts: [],
};

class BreakoutRoomInvitation extends Component {
  constructor(props) {
    super(props);

    this.state = {
      didSendBreakoutInvite: false,
      isBreakoutJoinConfirmationModalOpen: false,
      breakout: null,
      breakoutName: null,
    };
    this.setBreakoutJoinConfirmationModalIsOpen = this.setBreakoutJoinConfirmationModalIsOpen.bind(this);
  }

  componentDidMount() {
    // use dummy old data on mount so it works if no data changes
    this.checkBreakouts({ breakouts: [] });
  }

  componentDidUpdate(oldProps) {
    this.checkBreakouts(oldProps);
  }

  checkBreakouts(oldProps) {
    const {
      breakouts,
      lastBreakoutReceived,
      breakoutRoomsUserIsIn,
    } = this.props;

    const {
      didSendBreakoutInvite,
    } = this.state;

    const hasBreakoutsAvailable = breakouts.length > 0;
    const isModerator = BreakoutService.amIModerator();

    if (hasBreakoutsAvailable
      && !breakoutRoomsUserIsIn) {
      const freeJoinRooms = breakouts.filter((breakout) => (breakout.freeJoin));

      if (lastBreakoutReceived) {
        const lastBreakoutIdOpened = Session.get('lastBreakoutIdOpened');
        const oldLastBktReceivedInsertedTime = (typeof oldProps.lastBreakoutReceived === 'object') ? oldProps.lastBreakoutReceived.breakoutUrlData.insertedTime : 0;

        // check if user has a new invitation
        if (lastBreakoutReceived.breakoutUrlData.insertedTime !== oldLastBktReceivedInsertedTime
        // or check if user just left a room and was invited to another room in last 15 secs
        || (typeof oldProps.breakoutRoomsUserIsIn === 'object'
            && !breakoutRoomsUserIsIn
            && lastBreakoutReceived.breakoutId !== lastBreakoutIdOpened
          && lastBreakoutReceived.breakoutUrlData.insertedTime > (new Date().getTime()) - 15000)
        ) {
          if (!isModerator || lastBreakoutReceived.sendInviteToModerators) this.inviteUserToBreakout(lastBreakoutReceived);
        }
      } else if (freeJoinRooms.length > 0 && !didSendBreakoutInvite) {
        const maxSeq = Math.max(...freeJoinRooms.map(((room) => room.sequence)));
        // Check if received all rooms and Pick a room randomly
        if (maxSeq === freeJoinRooms.length) {
          const randomRoom = freeJoinRooms[Math.floor(Math.random() * freeJoinRooms.length)];
          if (!isModerator || randomRoom.sendInviteToModerators) this.inviteUserToBreakout(randomRoom);
          this.setState({ didSendBreakoutInvite: true });
        }
      }
    }

    if (!hasBreakoutsAvailable && didSendBreakoutInvite) {
      this.setState({ didSendBreakoutInvite: false });
    }
  }

  inviteUserToBreakout(breakout) {
    Session.set('lastBreakoutIdInvited', breakout.breakoutId);
    // There's a race condition on page load with modals. Only one modal can be shown at a
    // time and new ones overwrite old ones. We delay the opening of the breakout modal
    // because it should always be on top if breakouts are running.
    setTimeout(() => {
      this.setState({
        breakout: breakout,
        breakoutName: breakout.name,
      })
      this.setBreakoutJoinConfirmationModalIsOpen(true);
    }, BREAKOUT_MODAL_DELAY);
  }

  setBreakoutJoinConfirmationModalIsOpen(value) {
    this.setState({
      isBreakoutJoinConfirmationModalOpen: value,
    });
  }

  render() {
    const { isBreakoutJoinConfirmationModalOpen, breakout, breakoutName } = this.state;
    return (<>
        {isBreakoutJoinConfirmationModalOpen ? <BreakoutJoinConfirmationContainer
          breakout={breakout}
          breakoutName={breakoutName} 
          {...{
            onRequestClose: () => this.setBreakoutJoinConfirmationModalIsOpen(false),
            priority: "medium",
            setIsOpen: this.setBreakoutJoinConfirmationModalIsOpen,
            isOpen: isBreakoutJoinConfirmationModalOpen
          }}
        /> : null}
      </>
    );
  }
}

BreakoutRoomInvitation.propTypes = propTypes;
BreakoutRoomInvitation.defaultProps = defaultProps;

export default BreakoutRoomInvitation;