// @flow

import React, { useEffect, Fragment } from 'react';
import { CHANNEL_NEW } from 'constants/claim';
import { buildURI, isURIValid } from 'lbry-redux';
import ChannelCreate from 'component/channelCreate';
import Card from 'component/common/card';
import * as ICONS from 'constants/icons';

type Props = {
  name: ?string,
  channel: string,
  resolveUri: string => void,
  updatePublishForm: any => void,
  onSuccess: () => void,
};

function ChannelForm(props: Props) {
  const { name, channel, resolveUri, updatePublishForm, onSuccess } = props;

  // Every time the channel or name changes, resolve the uris to find winning bid amounts
  useEffect(() => {
    // If they are midway through a channel creation, treat it as anonymous until it completes
    const channelName = channel === CHANNEL_NEW ? '' : channel;

    // We are only going to store the full uri, but we need to resolve the uri with and without the channel name
    let uri;
    try {
      uri = name && buildURI({ streamName: name, channelName });
    } catch (e) {}

    if (channelName && name) {
      // resolve without the channel name so we know the winning bid for it
      try {
        const uriLessChannel = buildURI({ streamName: name });
        resolveUri(uriLessChannel);
      } catch (e) {}
    }

    const isValid = isURIValid(uri);
    if (uri && isValid) {
      resolveUri(uri);
      updatePublishForm({ uri });
    }
  }, [name, channel, resolveUri, updatePublishForm]);

  return (
    <Fragment>
      <Card
        icon={ICONS.CHANNEL}
        title="Create a New Channel"
        subtitle="This is a username or handle that your content can be found under."
        actions={
          <React.Fragment>
            <ChannelCreate onSuccess={onSuccess} onChannelChange={channel => updatePublishForm({ channel })} />
          </React.Fragment>
        }
      />
    </Fragment>
  );
}

export default ChannelForm;