import React from 'react';
import AssetPreview from 'components/AssetPreview';

class ChannelClaimsDisplay extends React.Component {
  constructor (props) {
    super(props);
    this.showNextResultsPage = this.showNextResultsPage.bind(this);
    this.showPreviousResultsPage = this.showPreviousResultsPage.bind(this);
  }
  showPreviousResultsPage () {
    const { channel: { claimsData: { currentPage } } } = this.props;
    const previousPage = parseInt(currentPage) - 1;
    this.showNewPage(previousPage);
  }
  showNextResultsPage () {
    const { channel: { claimsData: { currentPage } } } = this.props;
    const nextPage = parseInt(currentPage) + 1;
    this.showNewPage(nextPage);
  }
  showNewPage (page) {
    const { channelKey, channel: { name, longId } } = this.props;
    this.props.onUpdateChannelClaims(channelKey, name, longId, page);
  }
  render () {
    const { channel: { claimsData: { claims, currentPage, totalPages } } } = this.props;
    return (
      <div className='row row--tall'>
        {(claims.length > 0) ? (
          <div>
            {claims.map((claim, index) => <AssetPreview
              claimData={claim}
              key={`${claim.name}-${index}`}
            />)}
            <div>
              {(currentPage > 1) &&
              <button className={'button--secondary'} onClick={this.showPreviousResultsPage}>Previous Page</button>
              }
              {(currentPage < totalPages) &&
              <button className={'button--secondary'} onClick={this.showNextResultsPage}>Next Page</button>
              }
            </div>
          </div>
        ) : (
          <p>There are no claims in this channel</p>
        )}
      </div>
    );
  }
};

export default ChannelClaimsDisplay;