import React, { useState, useRef } from 'react';
import PropTypes from 'prop-types';
import { withTranslation } from 'react-i18next';
import loggerFactory from '@alias/logger';

import {
  Modal, ModalHeader, ModalBody,
} from 'reactstrap';
import { withUnstatedContainers } from '../../UnstatedUtils';
import { toastSuccess, toastError } from '../../../util/apiNotification';
import { withLoadingSppiner } from '../../SuspenseUtils';


import AppContainer from '../../../services/AppContainer';
import AdminAppContainer from '../../../services/AdminAppContainer';

const logger = loggerFactory('growi:smtpSettings');


function SmtpSetting(props) {
  const { adminAppContainer, t } = props;

  const hostInput = useRef();
  const portInput = useRef();
  const userInput = useRef();
  const passwordInput = useRef();

  const [isInitializeValueModalOpen, setIsInitializeValueModalOpen] = useState(false);

  function openInitializeValueModal() {
    setIsInitializeValueModalOpen(true);

  }

  function closeInitializeValueModal() {
    setIsInitializeValueModalOpen(false);
  }

  async function submitHandler() {
    const { t, adminAppContainer } = props;

    try {
      await adminAppContainer.updateSmtpSettingHandler();
      toastSuccess(t('toaster.update_successed', { target: t('admin:app_setting.smtp_settings') }));
    }
    catch (err) {
      toastError(err);
      logger.error(err);
    }
  }

  async function initialize() {
    const { t, adminAppContainer } = props;

    try {
      const mailSettingParams = await adminAppContainer.initializeSmtpSettingHandler();
      toastSuccess(t('toaster.initialize_successed', { target: t('admin:app_setting.smtp_settings') }));
      // convert values to '' if value is null for overwriting values of inputs with refs
      hostInput.current.value = mailSettingParams.smtpHost || '';
      portInput.current.value = mailSettingParams.smtpPort || '';
      userInput.current.value = mailSettingParams.smtpUser || '';
      passwordInput.current.value = mailSettingParams.smtpPassword || '';
      closeInitializeValueModal();
    }
    catch (err) {
      toastError(err);
      logger.error(err);
    }
  }


  return (
    <React.Fragment>
      <div id="mail-smtp" className="tab-pane active mt-5">
        <div className="row form-group mb-5">
          <label className="col-md-3 col-form-label text-left">{t('admin:app_setting.smtp_settings')}</label>
          <div className="col-md-4">
            <label>{t('admin:app_setting.host')}</label>
            <input
              className="form-control"
              type="text"
              ref={hostInput}
              defaultValue={adminAppContainer.state.smtpHost || ''}
              onChange={(e) => { adminAppContainer.changeSmtpHost(e.target.value) }}
            />
          </div>
          <div className="col-md-2">
            <label>{t('admin:app_setting.port')}</label>
            <input
              className="form-control"
              ref={portInput}
              defaultValue={adminAppContainer.state.smtpPort || ''}
              onChange={(e) => { adminAppContainer.changeSmtpPort(e.target.value) }}
            />
          </div>
        </div>

        <div className="row form-group mb-5">
          <div className="col-md-3 offset-md-3">
            <label>{t('admin:app_setting.user')}</label>
            <input
              className="form-control"
              type="text"
              ref={userInput}
              defaultValue={adminAppContainer.state.smtpUser || ''}
              onChange={(e) => { adminAppContainer.changeSmtpUser(e.target.value) }}
            />
          </div>
          <div className="col-md-3">
            <label>{t('Password')}</label>
            <input
              className="form-control"
              type="password"
              ref={passwordInput}
              defaultValue={adminAppContainer.state.smtpPassword || ''}
              onChange={(e) => { adminAppContainer.changeSmtpPassword(e.target.value) }}
            />
          </div>
        </div>

        <div className="row my-3">
          <div className="offset-5">
            <button type="button" className="btn btn-primary" onClick={submitHandler} disabled={adminAppContainer.state.retrieveError != null}>
              { t('Update') }
            </button>
          </div>
          <div className="offset-1">
            <button
              type="button"
              className="btn btn-secondary"
              onClick={openInitializeValueModal}
              disabled={adminAppContainer.state.retrieveError != null}
            >
              {t('admin:app_setting.initialize_mail_settings')}
            </button>
          </div>
        </div>
      </div>


      <Modal isOpen={isInitializeValueModalOpen} toggle={closeInitializeValueModal} className="initialize-mail-settings">
        <ModalHeader tag="h4" toggle={closeInitializeValueModal} className="bg-danger text-light">
          {t('admin:app_setting.initialize_mail_modal_header')}
        </ModalHeader>
        <ModalBody>
          <div className="text-center mb-4">
            {t('admin:app_setting.confirm_to_initialize_mail_settings')}
          </div>
          <div className="text-center my-2">
            <button type="button" className="btn btn-outline-secondary mr-4" onClick={closeInitializeValueModal}>
              {t('Cancel')}
            </button>
            <button type="button" className="btn btn-danger" onClick={initialize}>
              {t('Reset')}
            </button>
          </div>
        </ModalBody>
      </Modal>

    </React.Fragment>
  );
}

/**
 * Wrapper component for using unstated
 */
const SmtpSettingWrapper = withUnstatedContainers(withLoadingSppiner(SmtpSetting), [AppContainer, AdminAppContainer]);

SmtpSetting.propTypes = {
  t: PropTypes.func.isRequired, // i18next
  appContainer: PropTypes.instanceOf(AppContainer).isRequired,
  adminAppContainer: PropTypes.instanceOf(AdminAppContainer).isRequired,
};

export default withTranslation()(SmtpSettingWrapper);