import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
import PropTypes from 'prop-types';
import classnames from 'classnames';
import { I18nextProvider } from 'react-i18next';
import { SimpleEditor, getBrowserInfo, LongTextModal, BrowserTip, slateToMdString, MarkdownPreview } from '@seafile/seafile-editor';
import CenteredLoading from '../../../../components/centered-loading';
import toaster from '../../../../components/toast';
import { gettext, lang } from '../../../../utils/constants';
import { getFileNameFromRecord, getParentDirFromRecord } from '../../../utils/cell';
import { Utils } from '../../../../utils/utils';
import i18n from '../../../../_i18n/i18n-seafile-editor';
import Icon from '../../../../components/icon';

import './index.css';

const OCRResultDialog = ({ record, onToggle, saveToDescription }) => {
  const [isLoading, setLoading] = useState(true);
  const [isFullScreen, setIsFullScreen] = useState(false);
  const [dialogStyle, setDialogStyle] = useState({});

  const ocrResult = useRef(null);

  const parentDir = useMemo(() => getParentDirFromRecord(record), [record]);
  const fileName = useMemo(() => getFileNameFromRecord(record), [record]);

  const editorRef = useRef(null);

  const { isValidBrowser, isWindowsWechat } = useMemo(() => {
    return getBrowserInfo(true);
  }, []);

  const onFullScreenToggle = useCallback(() => {
    let containerStyle = {};
    if (!isFullScreen) {
      containerStyle = {
        width: '100%',
        height: '100%',
        top: 0,
        border: 'none'
      };
    }
    setIsFullScreen(!isFullScreen);
    setDialogStyle(containerStyle);
  }, [isFullScreen]);

  const onContainerKeyDown = useCallback((event) => {
    event.stopPropagation();
    if (event.keyCode === 27) {
      event.stopPropagation();
      event.preventDefault();
      onToggle();
    }
  }, [onToggle]);

  const onSave = useCallback(() => {
    const newContent = editorRef.current?.getSlateValue();
    const value = slateToMdString(newContent);
    saveToDescription(value);
    onToggle();
  }, [saveToDescription, onToggle]);

  useEffect(() => {
    const path = window.sfMetadataContext.canModifyRow(record) ? Utils.joinPath(parentDir, fileName) : '';
    if (path === '') {
      setLoading(false);
      return;
    }
    window.sfMetadataContext.ocr(path).then(res => {
      const result = res.data?.ocr_result || '';
      ocrResult.current = result.replaceAll('\n\n', '\n').replaceAll('\n', '\n\n');
      setLoading(false);
    }).catch(error => {
      const errorMessage = gettext('Failed to extract text');
      toaster.danger(errorMessage);
      setLoading(false);
    });
  // eslint-disable-next-line react-hooks/exhaustive-deps
  }, []);

  return (
    <I18nextProvider i18n={ i18n }>
      <LongTextModal onModalClick={onToggle} containerClass="sf-metadata-ocr-file-dialog">
        <div style={dialogStyle} className="longtext-dialog-container">
          <div className={classnames('longtext-header-container', { 'longtext-header-container-border': isWindowsWechat })}>
            <div className="longtext-header">
              <span className="longtext-header-name">{gettext('OCR result')}</span>
              <div className="longtext-header-tool">
                <span
                  className="longtext-header-tool-item d-flex align-items-center mr-1"
                  title={gettext('Save to description property')}
                  onClick={onSave}
                >
                  <Icon symbol="save" />
                </span>
                <span
                  className={classnames('longtext-header-tool-item mr-1 iconfont icon-full-screen', { 'long-text-full-screen': isFullScreen })}
                  onClick={onFullScreenToggle}
                  title={gettext('Full screen')}
                >
                </span>
                <span
                  className="longtext-header-tool-item iconfont icon-x"
                  onClick={onToggle}
                  title={gettext('Close')}
                >
                </span>
              </div>
            </div>
            {!isValidBrowser && <BrowserTip lang={lang} isWindowsWechat={isWindowsWechat} />}
          </div>
          <div
            onKeyDown={onContainerKeyDown}
            className={classnames('longtext-content-container', { 'longtext-container-scroll': isWindowsWechat })}
          >
            {isLoading ? (
              <CenteredLoading />
            ) : (
              <>
                {isWindowsWechat ? (
                  <MarkdownPreview isWindowsWechat={isWindowsWechat} value={ocrResult.current} isShowOutline={false} />
                ) : (
                  <SimpleEditor ref={editorRef} focusEnd={false} value={ocrResult.current} />
                )}
              </>
            )}
          </div>
        </div>
      </LongTextModal>
    </I18nextProvider>
  );
};

OCRResultDialog.propTypes = {
  record: PropTypes.object,
  onToggle: PropTypes.func,
  saveToDescription: PropTypes.func,
};

export default OCRResultDialog;