import { useCallback } from 'react';

import type { LinkProps } from 'next/link';
import { useTranslation } from 'react-i18next';
import ReactMarkdown from 'react-markdown';

import { NextLink } from '~/components/ReactMarkdownComponents/NextLink';

import { useRagSearchModal } from '../../../client/stores/rag-search';

import styles from './MessageCard.module.scss';

const moduleClass = styles['message-card'] ?? '';


const userMessageCardModuleClass = styles['user-message-card'] ?? '';

const UserMessageCard = ({ children }: { children: string }): JSX.Element => (
  <div className={`card d-inline-flex align-self-end bg-success-subtle bg-info-subtle ${moduleClass} ${userMessageCardModuleClass}`}>
    <div className="card-body">
      <ReactMarkdown>{children}</ReactMarkdown>
    </div>
  </div>
);


const assistantMessageCardModuleClass = styles['assistant-message-card'] ?? '';

const NextLinkWrapper = (props: LinkProps & {children: string, href: string}): JSX.Element => {
  const { close: closeRagSearchModal } = useRagSearchModal();

  const onClick = useCallback(() => {
    closeRagSearchModal();
  }, [closeRagSearchModal]);

  return (
    <NextLink href={props.href} onClickNextLink={onClick} className="link-primary">
      {props.children}
    </NextLink>
  );
};
const AssistantMessageCard = ({ children }: { children: string }): JSX.Element => {
  const { t } = useTranslation();

  return (
    <div className={`card border-0 ${moduleClass} ${assistantMessageCardModuleClass}`}>
      <div className="card-body d-flex">
        <div className="me-2 me-lg-3">
          <span className="growi-custom-icons grw-ai-icon rounded-pill">growi_ai</span>
        </div>

        { children.length > 0
          ? (
            <ReactMarkdown
              components={{ a: NextLinkWrapper }}
            >{children}
            </ReactMarkdown>
          )
          : (
            <span className="text-thinking">
              {t('modal_aichat.progress_label')} <span className="material-symbols-outlined">more_horiz</span>
            </span>
          )
        }
      </div>
    </div>
  );
};

type Props = {
  role: 'user' | 'assistant',
  children: string,
}

export const MessageCard = (props: Props): JSX.Element => {
  const { role, children } = props;

  return role === 'user'
    ? <UserMessageCard>{children}</UserMessageCard>
    : <AssistantMessageCard>{children}</AssistantMessageCard>;
};