// @flow
import React, { Fragment, PureComponent } from 'react';
import MarkdownPreview from 'component/common/markdown-preview';
import Button from 'component/button';
import Expandable from 'component/expandable';
import path from 'path';
import ClaimTags from 'component/claimTags';

type Props = {
  uri: string,
  claim: StreamClaim,
  fileInfo: FileListItem,
  metadata: StreamMetadata,
  openFolder: string => void,
  contentType: string,
  user: ?any,
};

class FileDetails extends PureComponent<Props> {
  render() {
    const { uri, claim, contentType, fileInfo, metadata, openFolder } = this.props;

    if (!claim || !metadata) {
      return <span className="empty">{__('Empty claim or metadata info.')}</span>;
    }

    const { description, languages, license } = metadata;

    const mediaType = contentType || 'unknown';
    const fileSize = metadata.source.size
      ? formatBytes(metadata.source.size)
      : fileInfo && fileInfo.download_path && formatBytes(fileInfo.written_bytes);
    let downloadPath = fileInfo && fileInfo.download_path ? path.normalize(fileInfo.download_path) : null;
    let downloadNote;
    // If the path is blank, file is not available. Streamed files won't have any blobs saved
    // Create path from name so the folder opens on click.
    if (fileInfo && fileInfo.blobs_completed >= 1 && fileInfo.download_path === null) {
      downloadPath = `${fileInfo.download_directory}/${fileInfo.file_name}`;
      downloadNote = 'This file may have been streamed, moved or deleted';
    }

    return (
      <Fragment>
        <Expandable>
          {description && (
            <div className="media__info-text">
              <MarkdownPreview content={description} />
            </div>
          )}
          <ClaimTags uri={uri} type="large" />
          <table className="table table--condensed table--fixed table--file-details">
            <tbody>
              <tr>
                <td> {__('Content Type')}</td>
                <td>{mediaType}</td>
              </tr>
              <tr>
                <td> {__('Bid Amount')}</td>
                <td>{claim.amount} LBC</td>
              </tr>
              {fileSize && (
                <tr>
                  <td> {__('File Size')}</td>
                  <td>{fileSize}</td>
                </tr>
              )}
              {languages && (
                <tr>
                  <td>{__('Languages')}</td>
                  <td>{languages.join(' ')}</td>
                </tr>
              )}
              <tr>
                <td>{__('License')}</td>
                <td>{license}</td>
              </tr>
              {downloadPath && (
                <tr>
                  <td>{__('Downloaded to')}</td>
                  <td>
                    {/* {downloadPath.replace(/(.{10})/g, '$1\u200b')} */}
                    <Button
                      button="link"
                      className="button--download-link"
                      onClick={() => {
                        if (downloadPath) {
                          openFolder(downloadPath);
                        }
                      }}
                      label={downloadNote || downloadPath.replace(/(.{10})/g, '$1\u200b')}
                    />
                  </td>
                </tr>
              )}
            </tbody>
          </table>
        </Expandable>
      </Fragment>
    );
  }
}
// move this with other helper functions when we re-use it
function formatBytes(bytes, decimals = 2) {
  if (bytes === 0) return '0 Bytes';

  const k = 1024;
  const dm = decimals < 0 ? 0 : decimals;
  const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];

  const i = Math.floor(Math.log(bytes) / Math.log(k));

  return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
}

export default FileDetails;