daddy/client/src/components/ConferencePage/ConferencePage.tsx

import React, { FunctionComponent, useEffect } from 'react';
import { Config } from '../../config';
import { useUserProfile } from '../../gql/queries/profile';
import { useConference } from '../../hooks/useConference';
import { Page } from '../Page';
import { Gravatar } from './Gravatar';

export interface ConferencePageProps {

}

const StatusHandRaised = 'hand-raised';
const StatusThumbsUp = 'thumbs-up';
const StatusThumbsDown = 'thumbs-down';
const StatusNoVote = 'no-vote';

export const ConferencePage:FunctionComponent<ConferencePageProps> = () => {
  const { user } = useUserProfile();
  const { uuid, data, setNickname, setEmail, ping, setStatus, forget } = useConference();

  const currentStatus = data.statuses[uuid];

  useEffect(() => {
    if (!user.name && !user.email) return;
    setNickname(user.name || user.email.split('@')[0]);
    setEmail(user.email);
  }, [user.name, user.email]);

  useEffect(() => {
    ping();
    const intervalId = setInterval(() => ping(), Config.conferenceHeartbeatInterval + (Math.random() * Config.conferenceHeartbeatInterval/2));
    return () => clearInterval(intervalId);
  }, []);

  const onStatusChange = (status: string) => {
    setStatus(currentStatus === status ? '' : status);
  };

  return (
    <Page title="Conference">
      <div className="container is-fluid">
        <section className="mt-5">
          <h3 className="is-size-3">Mes actions</h3>
          <div className="buttons has-addons">
            <button
              className={`button is-medium ${currentStatus === StatusHandRaised ? 'is-info is-selected' : ''}`}
              onClick={onStatusChange.bind(null, StatusHandRaised)}>
              <span className="icon">
                <i className="fa fa-hand-paper"></i>
              </span>
              <span>Lever la main</span>
            </button>
            <button
              className={`button is-medium ${currentStatus === StatusThumbsUp ? 'is-success is-selected' : ''}`}
              onClick={onStatusChange.bind(null, StatusThumbsUp)}>
              <span className="icon">
                <i className="fa fa-thumbs-up"></i>
              </span>
              <span>Voter pour</span>
            </button>
            <button
              className={`button is-medium ${currentStatus === StatusNoVote ? 'is-warning is-selected' : ''}`}
              onClick={onStatusChange.bind(null, StatusNoVote)}>
              <span className="icon">
                <i className="fa fa-mitten"></i>
              </span>
              <span>Ne se prononce pas</span>
            </button>
            <button 
              className={`button is-medium ${currentStatus === StatusThumbsDown ? 'is-danger is-selected' : ''}`}
              onClick={onStatusChange.bind(null, StatusThumbsDown)}>
              <span className="icon">
                <i className="fa fa-thumbs-down"></i>
              </span>
              <span>Voter contre</span>
            </button>
          </div>
          <h3 className="is-size-3">Assemblée</h3>
          <div className="columns mt-1 is-multiline">
            <UserCard className="column is-narrow" 
              nickname={data.nicknames[uuid]}
              status={currentStatus}
              email={user.email} />
            {
              Object.keys(data.peers).map(p => {
                const now = new Date();
                const lastHeartBeat = new Date(data.peers[p]);

                if (p === uuid) return null;

                if (now.getTime() > lastHeartBeat.getTime() + Config.conferenceHeartbeatInterval*2) {
                  forget(p);
                  return null;
                }

                const nickname = data.nicknames[p] || '???';
                const email = data.emails[p] || '';
                return (
                  <UserCard key={`peer-${p}`} className="column is-narrow" 
                    nickname={nickname}
                    status={data.statuses[p]}
                    email={email} />
                )
              })
            }
          </div>
        </section>
      </div>
    </Page>
  );
}

export interface UserCardProps {
  nickname: string
  email: string
  className?: string
  status: string
};

export const UserCard:FunctionComponent<UserCardProps> = ({ nickname, email, className, status }) => {
  return (
    <div className={className}>
      <div className="box">
        <div className="has-text-centered">
          <div className="mb-1">
            { !status ? <span className="icon"><i className="far fa-2x fa-meh-blank"></i></span> : null }
            { status === StatusHandRaised ? <span className="icon has-text-info"><i className="fa fa-2x fa-hand-paper"></i></span> : null }
            { status === StatusThumbsUp ? <span className="icon has-text-success"><i className="fa fa-2x fa-thumbs-up"></i></span> : null }
            { status === StatusNoVote ? <span className="icon has-text-warning"><i className="fa fa-2x fa-mitten"></i></span> : null }
            { status === StatusThumbsDown ? <span className="icon has-text-danger"><i className="fa fa-2x fa-thumbs-down"></i></span> : null }
          </div>
          <figure className="image is-128x128 is-inline-block">
            <Gravatar className="is-rounded" email={email} />
          </figure>
          <h4 className="is-size-4">{nickname}</h4>
        </div>
      </div>
    </div>
  );
};