class Records extends React.Component {
  static propTypes = {
    recordsUrl: PropTypes.string
  };

  componentDidMount() {
    this.fetchRecords(this.props.recordsUrl);
  }

  state = {
    records: [],
    prevUrl: "",
    nextUrl: ""
  };

  fetchRecords = url => {
    fetch(url)
      .then(data => {
        if (data.ok) {
          return data.json();
        }
        throw new Error("Network error!");
      })
      .then(data => {
        this.setState({
          records: data.records,
          nextUrl: data.next_url,
          prevUrl: data.prev_url,
        });
      })
      .catch(err => console.log("Error: " + err));
  };
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