import React, { useState, useEffect, useRef } from 'react';
import PropTypes from 'prop-types';
import { defineMessages, injectIntl } from 'react-intl';
import { toPng } from 'html-to-image';
import { toast } from 'react-toastify';
import logger from '/imports/startup/client/logger';
import {
  PresentationDropdownItemType,
} from 'bigbluebutton-html-plugin-sdk/dist/cjs/extensible-areas/presentation-dropdown-item/enums';

import Styled from './styles';
import BBBMenu from '/imports/ui/components/common/menu/component';
import TooltipContainer from '/imports/ui/components/common/tooltip/container';
import { ACTIONS } from '/imports/ui/components/layout/enums';
import deviceInfo from '/imports/utils/deviceInfo';
import browserInfo from '/imports/utils/browserInfo';
import AppService from '/imports/ui/components/app/service';
import { getSettingsSingletonInstance } from '/imports/ui/services/settings';

const intlMessages = defineMessages({
  downloading: {
    id: 'app.presentation.options.downloading',
    description: 'Downloading label',
    defaultMessage: 'Downloading...',
  },
  downloaded: {
    id: 'app.presentation.options.downloaded',
    description: 'Downloaded label',
    defaultMessage: 'Current presentation was downloaded',
  },
  downloadFailed: {
    id: 'app.presentation.options.downloadFailed',
    description: 'Downloaded failed label',
    defaultMessage: 'Could not download current presentation',
  },
  fullscreenLabel: {
    id: 'app.presentation.options.fullscreen',
    description: 'Fullscreen label',
    defaultMessage: 'Fullscreen',
  },
  exitFullscreenLabel: {
    id: 'app.presentation.options.exitFullscreen',
    description: 'Exit fullscreen label',
    defaultMessage: 'Exit fullscreen',
  },
  minimizePresentationLabel: {
    id: 'app.presentation.options.minimize',
    description: 'Minimize presentation label',
    defaultMessage: 'Minimize',
  },
  optionsLabel: {
    id: 'app.navBar.optionsDropdown.optionsLabel',
    description: 'Options button label',
    defaultMessage: 'Options',
  },
  snapshotLabel: {
    id: 'app.presentation.options.snapshot',
    description: 'Snapshot of current slide label',
    defaultMessage: 'Snapshot of current slide',
  },
  whiteboardLabel: {
    id: 'app.shortcut-help.whiteboard',
    description: 'used for aria whiteboard options button label',
    defaultMessage: 'Whiteboard',
  },
  hideToolsDesc: {
    id: 'app.presentation.presentationToolbar.hideToolsDesc',
    description: 'Hide toolbar label',
  },
  showToolsDesc: {
    id: 'app.presentation.presentationToolbar.showToolsDesc',
    description: 'Show toolbar label',
  },
});

const propTypes = {
  intl: PropTypes.shape({
    formatMessage: PropTypes.func.isRequired,
  }).isRequired,
  allowSnapshotOfCurrentSlide: PropTypes.bool,
  handleToggleFullscreen: PropTypes.func.isRequired,
  isFullscreen: PropTypes.bool,
  elementName: PropTypes.string,
  fullscreenRef: PropTypes.instanceOf(Element),
  meetingName: PropTypes.string,
  isIphone: PropTypes.bool,
  elementId: PropTypes.string,
  elementGroup: PropTypes.string,
  currentElement: PropTypes.string,
  currentGroup: PropTypes.string,
  layoutContextDispatch: PropTypes.func.isRequired,
  isRTL: PropTypes.bool,
  tldrawAPI: PropTypes.shape({
    getSvg: PropTypes.func.isRequired,
    getCurrentPageShapes: PropTypes.func.isRequired,
  }),
  presentationDropdownItems: PropTypes.arrayOf(PropTypes.shape({
    id: PropTypes.string,
    type: PropTypes.string,
  })).isRequired,
};

const PresentationMenu = (props) => {
  const Settings = getSettingsSingletonInstance();
  const {
    intl,
    isFullscreen = false,
    elementId = '',
    elementName = '',
    elementGroup = '',
    currentElement = '',
    currentGroup = '',
    fullscreenRef = null,
    tldrawAPI = null,
    handleToggleFullscreen,
    layoutContextDispatch,
    meetingName = '',
    isIphone = false,
    isRTL = Settings.application.isRTL,
    isToolbarVisible,
    setIsToolbarVisible,
    allowSnapshotOfCurrentSlide = false,
    presentationDropdownItems,
    slideNum,
    currentUser,
    whiteboardId,
    persistShape,
  } = props;

  const [state, setState] = useState({
    hasError: false,
    loading: false,
  });

  const [isDropdownOpen, setIsDropdownOpen] = useState(false);
  const toastId = useRef(null);
  const dropdownRef = useRef(null);

  const formattedLabel = (fullscreen) => (fullscreen
    ? intl.formatMessage(intlMessages.exitFullscreenLabel)
    : intl.formatMessage(intlMessages.fullscreenLabel)
  );

  const formattedVisibilityLabel = (visible) => (visible
    ? intl.formatMessage(intlMessages.hideToolsDesc)
    : intl.formatMessage(intlMessages.showToolsDesc)
  );

  const extractShapes = (savedState) => {
    let data;

    // Check if savedState is a string (JSON) or an object
    if (typeof savedState === 'string') {
      try {
        data = JSON.parse(savedState);
      } catch (e) {
        console.error('Error parsing JSON:', e);
        return {};
      }
    } else if (typeof savedState === 'object' && savedState !== null) {
      data = savedState;
    } else {
      console.error('Invalid savedState type:', typeof savedState);
      return {};
    }

    // Check if 'records' key exists and extract shapes into an object keyed by shape ID
    if (data && data.records) {
      return data.records.reduce((acc, record) => {
        if (record.typeName === 'shape') {
          acc[record.id] = record;
        }
        return acc;
      }, {});
    }

    return {};
  };

  const handleFileInput = (event) => {
    const fileInput = event.target;
    const file = fileInput.files[0];
    if (file) {
      const reader = new FileReader();
      reader.onload = (e) => {
        const fileContent = e.target.result;
        const dataObj = extractShapes(JSON.parse(fileContent));
        const dataArray = Object.values(dataObj);
        dataArray.forEach((originalShape) => {
          const shape = {
            ...originalShape,
            parentId: `page:${slideNum}`,
            meta: {
              ...originalShape.meta,
              createdBy: currentUser.userId,
            },
          };
          persistShape(shape, whiteboardId, currentUser.isModerator);
        });
      };
      reader.readAsText(file);

      // Reset the file input
      fileInput.value = '';
    }
  };

  // const handleFileClick = () => {
  //   const fileInput = document.getElementById('hiddenFileInput');
  //   if (fileInput) {
  //     fileInput.click();
  //   } else {
  //     console.error('File input not found');
  //   }
  // };

  function renderToastContent() {
    const { loading, hasError } = state;

    let icon = loading ? 'blank' : 'check';
    if (hasError) icon = 'circle_close';

    return (
      <Styled.Line>
        <Styled.ToastText>
          <span>
            {loading && !hasError && intl.formatMessage(intlMessages.downloading)}
            {!loading && !hasError && intl.formatMessage(intlMessages.downloaded)}
            {!loading && hasError && intl.formatMessage(intlMessages.downloadFailed)}
          </span>
        </Styled.ToastText>
        <Styled.StatusIcon>
          <Styled.ToastIcon
            done={!loading && !hasError}
            error={hasError}
            loading={loading}
            iconName={icon}
          />
        </Styled.StatusIcon>
      </Styled.Line>
    );
  }

  function getAvailableOptions() {
    const menuItems = [];

    if (!isIphone) {
      menuItems.push(
        {
          key: 'list-item-fullscreen',
          dataTest: 'presentationFullscreen',
          label: formattedLabel(isFullscreen),
          icon: isFullscreen ? 'exit_fullscreen' : 'fullscreen',
          onClick: () => {
            handleToggleFullscreen(fullscreenRef);
            const newElement = (elementId === currentElement) ? '' : elementId;
            const newGroup = (elementGroup === currentGroup) ? '' : elementGroup;

            layoutContextDispatch({
              type: ACTIONS.SET_FULLSCREEN_ELEMENT,
              value: {
                element: newElement,
                group: newGroup,
              },
            });
          },
        },
      );
    }

    const { isIos } = deviceInfo;
    const { isSafari } = browserInfo;

    if (allowSnapshotOfCurrentSlide) {
      menuItems.push(
        {
          key: 'list-item-screenshot',
          label: intl.formatMessage(intlMessages.snapshotLabel),
          dataTest: 'presentationSnapshot',
          icon: 'video',
          onClick: async () => {
            setState({
              loading: true,
              hasError: false,
            });

            toastId.current = toast.info(renderToastContent(), {
              hideProgressBar: true,
              autoClose: false,
              newestOnTop: true,
              closeOnClick: true,
              onClose: () => {
                toastId.current = null;
              },
            });

            // This is a workaround to a conflict of the
            // dark mode's styles and the html-to-image lib.
            // Issue:
            //  https://github.com/bubkoo/html-to-image/issues/370
            const darkThemeState = AppService.isDarkThemeEnabled();
            AppService.setDarkTheme(false);

            try {
              // filter shapes that are inside the slide
              const backgroundShape = tldrawAPI.getCurrentPageShapes().find((s) => s.id === `shape:BG-${slideNum}`);
              const shapes = tldrawAPI.getCurrentPageShapes();
              const svgElem = await tldrawAPI.getSvg(shapes.map((shape) => shape.id));
              svgElem.setAttribute('width', backgroundShape.props.w);
              svgElem.setAttribute('height', backgroundShape.props.h);
              svgElem.setAttribute('viewBox', `1 1 ${backgroundShape.props.w} ${backgroundShape.props.h}`);

              // workaround for ios
              if (isIos || isSafari) {
                const svgString = new XMLSerializer().serializeToString(svgElem);
                const blob = new Blob([svgString], { type: 'image/svg+xml' });

                const data = URL.createObjectURL(blob);
                const anchor = document.createElement('a');
                anchor.href = data;
                anchor.setAttribute(
                  'download',
                  `${elementName}_${meetingName}_${new Date().toISOString()}.svg`,
                );
                anchor.click();
              } else {
                const width = svgElem?.width?.baseVal?.value ?? window.screen.width;
                const height = svgElem?.height?.baseVal?.value ?? window.screen.height;

                const data = await toPng(svgElem, { width, height, backgroundColor: '#FFF' });

                const anchor = document.createElement('a');
                anchor.href = data;
                anchor.setAttribute(
                  'download',
                  `${elementName}_${meetingName}_${new Date().toISOString()}.png`,
                );
                anchor.click();
              }

              setState({
                loading: false,
                hasError: false,
              });
            } catch (e) {
              setState({
                loading: false,
                hasError: true,
              });

              logger.warn({
                logCode: 'presentation_snapshot_error',
                extraInfo: e,
              });
            } finally {
              // Workaround
              AppService.setDarkTheme(darkThemeState);
            }
          },
        },
      );
    }

    menuItems.push(
      {
        key: 'list-item-toolvisibility',
        dataTest: 'toolVisibility',
        label: formattedVisibilityLabel(isToolbarVisible),
        icon: isToolbarVisible ? 'close' : 'pen_tool',
        onClick: () => {
          setIsToolbarVisible(!isToolbarVisible);
        },
      },
    );

    // if (props.amIPresenter) {
    //   menuItems.push({
    //     key: 'list-item-load-shapes',
    //     dataTest: 'loadShapes',
    //     label: 'Load .tldr Data',
    //     icon: 'pen_tool',
    //     onClick: handleFileClick,
    //   });
    // }

    presentationDropdownItems.forEach((item, index) => {
      switch (item.type) {
        case PresentationDropdownItemType.OPTION:
          menuItems.push({
            key: `${item.id}-${index}`,
            label: item.label,
            icon: item.icon,
            onClick: item.onClick,
          });
          break;
        case PresentationDropdownItemType.SEPARATOR:
          menuItems.push({
            key: `${item.id}-${index}`,
            isSeparator: true,
          });
          break;
        default:
          break;
      }
    });

    return menuItems;
  }

  useEffect(() => {
    if (toastId.current) {
      toast.update(toastId.current, {
        render: renderToastContent(),
        hideProgressBar: state.loading,
        autoClose: state.loading ? false : 3000,
        newestOnTop: true,
        closeOnClick: true,
        onClose: () => {
          toastId.current = null;
        },
      });
    }

    if (dropdownRef.current) {
      document.activeElement.blur();
      dropdownRef.current.focus();
    }
  });

  const options = getAvailableOptions();

  if (options.length === 0) {
    const undoCtrls = document.getElementById('TD-Styles')?.nextSibling;
    if (undoCtrls?.style) {
      undoCtrls.style = 'padding:0px';
    }
    const styleTool = document.getElementById('TD-Styles')?.parentNode;
    if (styleTool?.style) {
      styleTool.style = 'right:0px';
    }
    return null;
  }

  return (
    <Styled.Left id="WhiteboardOptionButton">
      <BBBMenu
        trigger={(
          <TooltipContainer title={intl.formatMessage(intlMessages.optionsLabel)}>
            <Styled.DropdownButton
              state={isDropdownOpen ? 'open' : 'closed'}
              aria-label={`${intl.formatMessage(intlMessages.whiteboardLabel)} ${intl.formatMessage(intlMessages.optionsLabel)}`}
              data-test="whiteboardOptionsButton"
              data-state={isDropdownOpen ? 'open' : 'closed'}
              onClick={() => {
                setIsDropdownOpen((isOpen) => !isOpen);
              }}
            >
              <svg width="22" height="22" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
                <path
                  d="
                    M9 11.25H11.25
                    M11.25 11.25H13.5
                    M11.25 11.25V9
                    M11.25 11.25V13.5
                    M4 7H5.5
                    C5.89782 7 6.27936 6.84196 6.56066 6.56066
                    C6.84196 6.27936 7 5.89782 7 5.5V4
                    C7 3.60218 6.84196 3.22064 6.56066 2.93934
                    C6.27936 2.65804 5.89782 2.5 5.5 2.5H4
                    C3.60218 2.5 3.22064 2.65804 2.93934 2.93934
                    C2.65804 3.22064 2.5 3.60218 2.5 4V5.5
                    C2.5 5.89782 2.65804 6.27936 2.93934 6.56066
                    C3.22064 6.84196 3.60218 7 4 7
                    ZM4 13.5H5.5
                    C5.89782 13.5 6.27936 13.342 6.56066 13.0607
                    C6.84196 12.7794 7 12.3978 7 12V10.5
                    C7 10.1022 6.84196 9.72064 6.56066 9.43934
                    C6.27936 9.15804 5.89782 9 5.5 9H4
                    C3.60218 9 3.22064 9.15804 2.93934 9.43934
                    C2.65804 9.72064 2.5 10.1022 2.5 10.5V12
                    C2.5 12.3978 2.65804 12.7794 2.93934 13.0607
                    C3.22064 13.342 3.60218 13.5 4 13.5
                    ZM10.5 7H12
                    C12.3978 7 12.7794 6.84196 13.0607 6.56066
                    C13.342 6.27936 13.5 5.89782 13.5 5.5V4
                    C13.5 3.60218 13.342 3.22064 13.0607 2.93934
                    C12.7794 2.65804 12.3978 2.5 12 2.5H10.5
                    C10.1022 2.5 9.72064 2.65804 9.43934 2.93934
                    C9.15804 3.22064 9 3.60218 9 4V5.5
                    C9 5.89782 9.15804 6.27936 9.43934 6.56066
                    C9.72064 6.84196 10.1022 7 10.5 7
                  "
                  stroke="currentcolor"
                  strokeLinecap="round"
                  strokeLinejoin="round"
                />
              </svg>
            </Styled.DropdownButton>
          </TooltipContainer>
        )}
        opts={{
          id: 'presentation-dropdown-menu',
          keepMounted: true,
          transitionDuration: 0,
          elevation: 3,
          getcontentanchorel: null,
          fullwidth: 'true',
          anchorOrigin: { vertical: 'bottom', horizontal: isRTL ? 'right' : 'left' },
          transformOrigin: { vertical: 'top', horizontal: isRTL ? 'right' : 'left' },
          container: fullscreenRef,
        }}
        actions={options}
      />
      <input
        type="file"
        id="hiddenFileInput"
        style={{ display: 'none' }}
        onChange={handleFileInput}
      />
    </Styled.Left>
  );
};

PresentationMenu.propTypes = propTypes;

export default injectIntl(PresentationMenu);