// @flow
import React, { useEffect } from 'react';
import FileRender from 'component/fileRender';
import FileViewerEmbeddedTitle from 'component/fileViewerEmbeddedTitle';
import Spinner from 'component/spinner';

type Props = {
  uri: string,
  resolveUri: string => void,
  claim: Claim,
  doPlayUri: string => void,
  costInfo: any,
  streamingUrl: string,
  doFetchCostInfoForUri: string => void,
  isResolvingUri: boolean,
};
// $FlowFixMe apparently flow thinks this is wrong.
export const EmbedContext = React.createContext();
const EmbedWrapperPage = (props: Props) => {
  const { resolveUri, claim, uri, doPlayUri, costInfo, streamingUrl, doFetchCostInfoForUri, isResolvingUri } = props;
  const haveClaim = Boolean(claim);
  const readyToDisplay = claim && streamingUrl;
  const loading = !claim && isResolvingUri;
  const noContentFound = !claim && !isResolvingUri;
  const isPaidContent = costInfo && costInfo.cost > 0;

  useEffect(() => {
    if (resolveUri && uri && !haveClaim) {
      resolveUri(uri);
    }
    if (uri && haveClaim && costInfo && costInfo.cost === 0) {
      doPlayUri(uri);
    }
  }, [resolveUri, uri, doPlayUri, haveClaim, costInfo]);

  useEffect(() => {
    if (haveClaim && uri && doFetchCostInfoForUri) {
      doFetchCostInfoForUri(uri);
    }
  }, [uri, haveClaim, doFetchCostInfoForUri]);

  return (
    <div className="embed__wrapper">
      <EmbedContext.Provider value>
        {readyToDisplay ? (
          <FileRender uri={uri} embedded />
        ) : (
          <div className="embed__loading">
            <FileViewerEmbeddedTitle uri={uri} />

            <div className="embed__loading-text">
              {loading && <Spinner delayed />}
              {noContentFound && <h1>No content at this link.</h1>}
              {isPaidContent && <h1>Paid content cannot be embedded.</h1>}
            </div>
          </div>
        )}
      </EmbedContext.Provider>
    </div>
  );
};

export default EmbedWrapperPage;
