QuickChess/src/index.js

import React from 'react';
import ReactDOM from 'react-dom';
import io from 'socket.io-client';

import Board from './board';

import './index.css';


const ENDPOINT = "http://localhost:4001";

class NameForm extends React.Component {
  constructor(props) {
    super(props);
    this.state = {value: ''};
    this.handleChange = this.handleChange.bind(this);
    this.handleSubmit = this.handleSubmit.bind(this);
    this.onSubmit = props.onSubmit;
  }

  handleChange(event) {
    this.setState({value: event.target.value});
  }

  handleSubmit(event) {
    this.onSubmit(this.state.value);
    event.preventDefault();
  }

  render() {
    return (
      <form onSubmit={this.handleSubmit}>
        <label>
          Name:
          <input type="text" value={this.state.value} onChange={this.handleChange} />
        </label>
        <input type="submit" value="Submit" />
      </form>
    );
  }
}

class Game extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      board: null,
      socket: io(ENDPOINT),
      gameKey: null,
    };

    this.state.socket.on("FromAPI", data => {
      console.log(data);
      this.setState({
        board: null,
      });
      this.setState({
        board: (
          <Board
           text={data}
           onMove={(move) => {
             console.log("ON MOVE");
             this.state.socket.emit("move", this.state.gameKey, move);
          }}/>
        ),
      });
    });
  }

  setGameKey(key) {
    console.log(`Setting gameKey to '${key}'`);
    this.setState({gameKey: key});
    this.state.socket.emit("find", key);
  }

  render() {
    return (
      <div className="game">
        <div className="game-board">
          {this.state.gameKey ? this.state.board : <NameForm onSubmit={this.setGameKey.bind(this)} />}
        </div>
      </div>
    );
  }
}

// ========================================

ReactDOM.render(
  <Game />,
  document.getElementById('root')
);