import { useCallback } from 'react';

import { useTranslation } from 'next-i18next';
import { useDrop } from 'react-dnd';

import { apiv3Post, apiv3Put } from '~/client/util/apiv3-client';
import { toastError, toastSuccess } from '~/client/util/toastr';
import { BookmarkFolderItems, DragItemType, DRAG_ITEM_TYPE } from '~/interfaces/bookmark-info';
import { IPageHasId, IPageToDeleteWithMeta } from '~/interfaces/page';
import { OnDeletedFunction } from '~/interfaces/ui';
import { useSWRBookmarkInfo, useSWRxCurrentUserBookmarks } from '~/stores/bookmark';
import { useSWRxBookamrkFolderAndChild } from '~/stores/bookmark-folder';
import { usePageDeleteModal } from '~/stores/modal';
import { useSWRxCurrentPage } from '~/stores/page';

import BookmarkFolderItem from './BookmarkFolderItem';
import BookmarkItem from './BookmarkItem';

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


type BookmarkFolderTreeProps = {
  isUserHomePage?: boolean
}

type DragItemDataType = {
  bookmarkFolder: BookmarkFolderItems
  level: number
  parentFolder: BookmarkFolderItems | null
 } & IPageHasId

const BookmarkFolderTree = (props: BookmarkFolderTreeProps): JSX.Element => {
  const acceptedTypes: DragItemType[] = [DRAG_ITEM_TYPE.FOLDER, DRAG_ITEM_TYPE.BOOKMARK];
  const { t } = useTranslation();
  const { isUserHomePage } = props;
  const { data: currentPage } = useSWRxCurrentPage();
  const { data: bookmarkFolderData, mutate: mutateBookamrkData } = useSWRxBookamrkFolderAndChild();
  const { data: userBookmarks, mutate: mutateUserBookmarks } = useSWRxCurrentUserBookmarks();
  const { mutate: mutateBookmarkInfo } = useSWRBookmarkInfo(currentPage?._id);

  const { open: openDeleteModal } = usePageDeleteModal();

  const onUnbookmarkHandler = useCallback(() => {
    mutateUserBookmarks();
    mutateBookmarkInfo();
  }, [mutateBookmarkInfo, mutateUserBookmarks]);

  const onClickDeleteBookmarkHandler = useCallback((pageToDelete: IPageToDeleteWithMeta) => {
    const pageDeletedHandler: OnDeletedFunction = (pathOrPathsToDelete, _isRecursively, isCompletely) => {
      if (typeof pathOrPathsToDelete !== 'string') {
        return;
      }
      const path = pathOrPathsToDelete;

      if (isCompletely) {
        toastSuccess(t('deleted_pages_completely', { path }));
      }
      else {
        toastSuccess(t('deleted_pages', { path }));
      }
      mutateUserBookmarks();
      mutateBookmarkInfo();
      mutateBookamrkData();
    };
    openDeleteModal([pageToDelete], { onDeleted: pageDeletedHandler });
  }, [mutateBookmarkInfo, mutateBookamrkData, mutateUserBookmarks, openDeleteModal, t]);

  const itemDropHandler = async(item: DragItemDataType, dragType: string | null | symbol) => {
    if (dragType === DRAG_ITEM_TYPE.FOLDER) {
      try {
        await apiv3Put('/bookmark-folder', { bookmarkFolderId: item.bookmarkFolder._id, name: item.bookmarkFolder.name, parent: null });
        await mutateBookamrkData();
        toastSuccess(t('toaster.update_successed', { target: t('bookmark_folder.bookmark_folder'), ns: 'commons' }));
      }
      catch (err) {
        toastError(err);
      }
    }
    else {
      try {
        await apiv3Post('/bookmark-folder/add-boookmark-to-folder', { pageId: item._id, folderId: null });
        await mutateUserBookmarks();
        toastSuccess(t('toaster.add_succeeded', { target: t('bookmark_folder.bookmark'), ns: 'commons' }));
      }
      catch (err) {
        toastError(err);
      }
    }

  };
  const isDroppable = (item: DragItemDataType, dragType: string | null | symbol) => {
    if (dragType === DRAG_ITEM_TYPE.FOLDER) {
      const isRootFolder = item.level === 0;
      return !isRootFolder;
    }
    const isRootBookmark = item.parentFolder == null;
    return !isRootBookmark;

  };

  const [{ isOver, canDrop }, dropRef] = useDrop(() => ({
    accept: acceptedTypes,
    drop: (item: DragItemDataType, monitor) => {
      const dragType = monitor.getItemType();
      itemDropHandler(item, dragType);
    },
    canDrop: (item: DragItemDataType, monitor) => {
      const dragType = monitor.getItemType();
      return isDroppable(item, dragType);
    },
    collect: monitor => ({
      isOver: monitor.isOver({ shallow: true }) && monitor.canDrop(),
      canDrop: monitor.canDrop(),
    }),
  }));


  return (
    <>
      <div className={`grw-folder-tree-container ${styles['grw-folder-tree-container']}` } >
        <ul className={`grw-foldertree ${styles['grw-foldertree']} list-group px-2 py-2`}>
          {bookmarkFolderData?.map((item) => {
            return (
              <BookmarkFolderItem
                key={item._id}
                bookmarkFolder={item}
                isOpen={false}
                level={0}
                root={item._id}
                isUserHomePage={isUserHomePage}
              />
            );
          })}
          {userBookmarks?.map(page => (
            <div key={page._id} className="grw-foldertree-item-container grw-root-bookmarks">
              <BookmarkItem
                bookmarkedPage={page}
                key={page._id}
                onUnbookmarked={onUnbookmarkHandler}
                onRenamed={mutateUserBookmarks}
                onClickDeleteMenuItem={onClickDeleteBookmarkHandler}
                parentFolder={null}
              />
            </div>
          ))}
        </ul>
        { bookmarkFolderData && bookmarkFolderData.length > 0 && (
          <div ref={(c) => { dropRef(c) }} className= 'grw-drop-item-area' >
            { canDrop && isOver && (
              <div className='grw-accept-drop-item' >{t('bookmark_folder.drop_item_here')}</div>
            )}
          </div>
        ) }
      </div>
    </>
  );


};

export default BookmarkFolderTree;