// @flow
import React, { useState } from 'react';
import { isNameValid } from 'lbry-redux';
import Button from 'component/button';
import { Form, FormField } from 'component/common/form';
import { INVALID_NAME_ERROR } from 'constants/claim';
import Card from 'component/common/card';
export const DEFAULT_BID_FOR_FIRST_CHANNEL = 0.01;

type Props = {
  createChannel: (string, number) => void,
  creatingChannel: boolean,
  createChannelError: string,
  claimingReward: boolean,
  user: User,
};

function UserFirstChannel(props: Props) {
  const { createChannel, creatingChannel, claimingReward, user, createChannelError } = props;
  const { primary_email: primaryEmail } = user;
  const initialChannel = primaryEmail.split('@')[0];
  const [channel, setChannel] = useState(initialChannel);
  const [nameError, setNameError] = useState(undefined);

  function handleCreateChannel() {
    createChannel(`@${channel}`, DEFAULT_BID_FOR_FIRST_CHANNEL);
  }

  function handleChannelChange(e) {
    const { value } = e.target;
    setChannel(value);
    if (!isNameValid(value, false)) {
      setNameError(INVALID_NAME_ERROR);
    } else {
      setNameError();
    }
  }

  return (
    <div className="main__channel-creation">
      <Card
        title={__('Create A Channel')}
        subtitle={
          <React.Fragment>
            <p>{__('A channel is your identity on the LBRY network.')}</p>
            <p>{__('You can have more than one or remove this later.')}</p>
          </React.Fragment>
        }
        actions={
          <Form onSubmit={handleCreateChannel}>
            <fieldset-group class="fieldset-group--smushed fieldset-group--disabled-prefix">
              <fieldset-section>
                <label htmlFor="auth_first_channel">
                  {createChannelError || nameError ? (
                    <span className="error__text">{createChannelError || nameError}</span>
                  ) : (
                    __('Your Channel')
                  )}
                </label>
                <div className="form-field__prefix">@</div>
              </fieldset-section>

              <FormField
                autoFocus
                placeholder={__('channel')}
                type="text"
                name="auth_first_channel"
                className="form-field--short"
                value={channel}
                onChange={handleChannelChange}
              />
            </fieldset-group>
            <div className="section__actions">
              <Button
                button="primary"
                type="submit"
                disabled={nameError || !channel || creatingChannel || claimingReward}
                label={creatingChannel || claimingReward ? __('Creating') : __('Create')}
              />
            </div>
          </Form>
        }
      />
    </div>
  );
}

export default UserFirstChannel;