import React from "react";
import ReactDOM from "react-dom";

import "./styles.css";

class App extends React.Component {
  constructor(props) {
    super(props);
    this.switchImage = this.switchImage.bind(this);
    this.state = {
      currentImage: 0,
      images: [
        "https://images.unsplash.com/photo-1518791841217-8f162f1e1131?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&w=1000&q=80",
        "https://img.purch.com/w/660/aHR0cDovL3d3dy5saXZlc2NpZW5jZS5jb20vaW1hZ2VzL2kvMDAwLzEwNC84MzAvb3JpZ2luYWwvc2h1dHRlcnN0b2NrXzExMTA1NzIxNTkuanBn",
        "https://d17fnq9dkz9hgj.cloudfront.net/uploads/2012/11/152964589-welcome-home-new-cat-632x475.jpg",
        "https://i.ytimg.com/vi/jpsGLsaZKS0/maxresdefault.jpg"
      ]
    };
  }

  switchImage() {
    if (this.state.currentImage < this.state.images.length - 1) {
      this.setState({
        currentImage: this.state.currentImage + 1
      });
    } else {
      this.setState({
        currentImage: 0
      });
    }
    return this.currentImage;
  }

  componentDidMount() {
    setInterval(this.switchImage, 1000);
  }

  render() {
    return (
      <div className="slideshow-container">
        <img
          src={this.state.images[this.state.currentImage]}
          alt="cleaning images"
        />
      </div>
    );
  }
}
const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);