import React, { useCallback, useState, useRef, useMemo } from 'react';
import {
  Box,
  Card,
  IconButton,
  Flex,
  Grid,
  Button,
  useTheme,
  Drawer,
  DrawerBody,
  DrawerFooter,
  DrawerHeader,
  DrawerOverlay,
  DrawerContent,
  useDisclosure
} from '@chakra-ui/react';
import { usePagination } from '@/web/common/hooks/usePagination';
import {
  getDatasetDataList,
  delOneDatasetDataById,
  getDatasetCollectionById
} from '@/web/core/dataset/api';
import { DeleteIcon } from '@chakra-ui/icons';
import { useQuery } from '@tanstack/react-query';
import { useToast } from '@fastgpt/web/hooks/useToast';
import { debounce } from 'lodash';
import { getErrText } from '@fastgpt/global/common/error/utils';
import { useConfirm } from '@/web/common/hooks/useConfirm';
import { useTranslation } from 'next-i18next';
import { useRouter } from 'next/router';
import MyIcon from '@fastgpt/web/components/common/Icon';
import MyInput from '@/components/MyInput';
import { useLoading } from '@/web/common/hooks/useLoading';
import InputDataModal from '../components/InputDataModal';
import RawSourceBox from '@/components/core/dataset/RawSourceBox';
import type { DatasetDataListItemType } from '@/global/core/dataset/type.d';
import { TabEnum } from '..';
import { useUserStore } from '@/web/support/user/useUserStore';
import { TeamMemberRoleEnum } from '@fastgpt/global/support/user/team/constant';
import { useSystemStore } from '@/web/common/system/useSystemStore';
import {
  DatasetCollectionTypeMap,
  TrainingModeEnum,
  TrainingTypeMap
} from '@fastgpt/global/core/dataset/constants';
import { formatTime2YMDHM } from '@fastgpt/global/common/string/time';
import { formatFileSize } from '@fastgpt/global/common/file/tools';
import { getFileAndOpen } from '@/web/core/dataset/utils';
import MyTooltip from '@/components/MyTooltip';

const DataCard = () => {
  const BoxRef = useRef<HTMLDivElement>(null);
  const theme = useTheme();
  const lastSearch = useRef('');
  const router = useRouter();
  const { userInfo } = useUserStore();
  const { isPc } = useSystemStore();
  const { collectionId = '', datasetId } = router.query as {
    collectionId: string;
    datasetId: string;
  };
  const { Loading, setIsLoading } = useLoading({ defaultLoading: true });
  const { t } = useTranslation();
  const [searchText, setSearchText] = useState('');
  const { toast } = useToast();
  const { openConfirm, ConfirmModal } = useConfirm({
    content: t('dataset.Confirm to delete the data'),
    type: 'delete'
  });
  const { isOpen, onOpen, onClose } = useDisclosure();

  const {
    data: datasetDataList,
    Pagination,
    total,
    getData,
    pageNum,
    pageSize
  } = usePagination<DatasetDataListItemType>({
    api: getDatasetDataList,
    pageSize: 24,
    params: {
      collectionId,
      searchText
    },
    onChange() {
      setIsLoading(false);
      if (BoxRef.current) {
        BoxRef.current.scrollTop = 0;
      }
    }
  });

  const [editDataId, setEditDataId] = useState<string>();

  // get first page data
  const getFirstData = useCallback(
    debounce(() => {
      getData(1);
      lastSearch.current = searchText;
    }, 300),
    []
  );

  // get file info
  const { data: collection } = useQuery(
    ['getDatasetCollectionById', collectionId],
    () => getDatasetCollectionById(collectionId),
    {
      onError: () => {
        router.replace({
          query: {
            datasetId
          }
        });
      }
    }
  );

  const canWrite = useMemo(
    () => userInfo?.team?.role !== TeamMemberRoleEnum.visitor && !!collection?.canWrite,
    [collection?.canWrite, userInfo?.team?.role]
  );

  const metadataList = useMemo(() => {
    if (!collection) return [];

    const webSelector =
      collection?.datasetId?.websiteConfig?.selector || collection?.metadata?.webPageSelector;

    return [
      {
        label: t('core.dataset.collection.metadata.source'),
        value: t(DatasetCollectionTypeMap[collection.type]?.name)
      },
      {
        label: t('core.dataset.collection.metadata.source name'),
        value: collection.file?.filename || collection?.rawLink || collection?.name
      },
      {
        label: t('core.dataset.collection.metadata.source size'),
        value: collection.file ? formatFileSize(collection.file.length) : '-'
      },
      {
        label: t('core.dataset.collection.metadata.Createtime'),
        value: formatTime2YMDHM(collection.createTime)
      },
      {
        label: t('core.dataset.collection.metadata.Updatetime'),
        value: formatTime2YMDHM(collection.updateTime)
      },
      {
        label: t('core.dataset.collection.metadata.Raw text length'),
        value: collection.rawTextLength ?? '-'
      },
      {
        label: t('core.dataset.collection.metadata.Training Type'),
        value: t(TrainingTypeMap[collection.trainingType]?.label)
      },
      {
        label: t('core.dataset.collection.metadata.Chunk Size'),
        value: collection.chunkSize || '-'
      },
      ...(webSelector
        ? [
            {
              label: t('core.dataset.collection.metadata.Web page selector'),
              value: webSelector
            }
          ]
        : [])
    ];
  }, [collection, t]);

  return (
    <Box position={'relative'} py={[1, 5]} h={'100%'}>
      <Flex ref={BoxRef} flexDirection={'column'} h={'100%'}>
        <Flex alignItems={'center'} px={5}>
          <IconButton
            mr={3}
            icon={<MyIcon name={'common/backFill'} w={['14px', '18px']} color={'primary.500'} />}
            variant={'whitePrimary'}
            size={'smSquare'}
            borderRadius={'50%'}
            aria-label={''}
            onClick={() =>
              router.replace({
                query: {
                  datasetId: router.query.datasetId,
                  parentId: router.query.parentId,
                  currentTab: TabEnum.collectionCard
                }
              })
            }
          />
          <Flex className="textEllipsis" flex={'1 0 0'} mr={[3, 5]} alignItems={'center'}>
            <Box lineHeight={1.2}>
              <RawSourceBox
                sourceName={collection?.name}
                sourceId={collection?.fileId || collection?.rawLink}
                fontSize={['md', 'lg']}
                color={'black'}
                textDecoration={'none'}
              />
              <Box fontSize={'sm'} color={'myGray.500'}>
                {t('core.dataset.collection.id')}:{' '}
                <Box as={'span'} userSelect={'all'}>
                  {collection?._id}
                </Box>
              </Box>
            </Box>
          </Flex>
          {canWrite && (
            <Box>
              <Button
                mx={2}
                variant={'whitePrimary'}
                size={['sm', 'md']}
                onClick={() => {
                  if (!collection) return;
                  setEditDataId('');
                }}
              >
                {t('dataset.Insert Data')}
              </Button>
            </Box>
          )}
          {isPc && (
            <MyTooltip label={t('core.dataset.collection.metadata.Read Metadata')}>
              <IconButton
                variant={'whiteBase'}
                size={['sm', 'md']}
                icon={<MyIcon name={'menu'} w={'18px'} />}
                aria-label={''}
                onClick={onOpen}
              />
            </MyTooltip>
          )}
        </Flex>
        <Flex my={3} alignItems={'center'} px={5}>
          <Box>
            <Box as={'span'} fontSize={['md', 'lg']}>
              {t('core.dataset.data.Total Amount', { total })}
            </Box>
          </Box>
          <Box flex={1} mr={1} />
          <MyInput
            leftIcon={
              <MyIcon
                name="common/searchLight"
                position={'absolute'}
                w={'14px'}
                color={'myGray.500'}
              />
            }
            w={['200px', '300px']}
            placeholder={t('core.dataset.data.Search data placeholder')}
            value={searchText}
            onChange={(e) => {
              setSearchText(e.target.value);
              getFirstData();
            }}
            onBlur={() => {
              if (searchText === lastSearch.current) return;
              getFirstData();
            }}
            onKeyDown={(e) => {
              if (searchText === lastSearch.current) return;
              if (e.key === 'Enter') {
                getFirstData();
              }
            }}
          />
        </Flex>
        <Box flex={'1 0 0'} overflow={'auto'} px={5}>
          <Grid
            gridTemplateColumns={['1fr', 'repeat(2,1fr)', 'repeat(3,1fr)', 'repeat(4,1fr)']}
            gridGap={4}
          >
            {datasetDataList.map((item, index) => (
              <Card
                key={item._id}
                cursor={'pointer'}
                p={3}
                userSelect={'none'}
                boxShadow={'none'}
                bg={'myWhite.500'}
                border={theme.borders.sm}
                position={'relative'}
                overflow={'hidden'}
                _hover={{
                  borderColor: 'myGray.200',
                  boxShadow: 'lg',
                  bg: 'white',
                  '& .footer': { h: 'auto', p: 3 }
                }}
                onClick={() => {
                  if (!collection) return;
                  setEditDataId(item._id);
                }}
              >
                <Flex zIndex={1} alignItems={'center'} justifyContent={'space-between'}>
                  <Box
                    border={theme.borders.base}
                    px={2}
                    fontSize={'sm'}
                    mr={1}
                    borderRadius={'md'}
                  >
                    # {item.chunkIndex ?? '-'}
                  </Box>
                  <Box className={'textEllipsis'} color={'myGray.500'} fontSize={'xs'}>
                    ID:{item._id}
                  </Box>
                </Flex>
                <Box
                  maxH={'135px'}
                  minH={'90px'}
                  overflow={'hidden'}
                  wordBreak={'break-all'}
                  pt={1}
                  pb={3}
                  fontSize={'13px'}
                >
                  <Box color={'black'} mb={1}>
                    {item.q}
                  </Box>
                  <Box color={'myGray.700'}>{item.a}</Box>

                  <Flex
                    className="footer"
                    position={'absolute'}
                    top={0}
                    bottom={0}
                    left={0}
                    right={0}
                    h={'0'}
                    overflow={'hidden'}
                    p={0}
                    bg={'linear-gradient(to top, white,white 20%, rgba(255,255,255,0) 60%)'}
                    alignItems={'flex-end'}
                    fontSize={'sm'}
                  >
                    <Flex alignItems={'center'}>
                      <MyIcon name="common/text/t" w={'14px'} mr={1} color={'myGray.500'} />
                      {item.q.length + (item.a?.length || 0)}
                    </Flex>
                    <Box flex={1} />
                    {canWrite && (
                      <IconButton
                        display={'flex'}
                        icon={<DeleteIcon />}
                        variant={'whiteDanger'}
                        size={'xsSquare'}
                        aria-label={'delete'}
                        onClick={(e) => {
                          e.stopPropagation();
                          openConfirm(async () => {
                            try {
                              setIsLoading(true);
                              await delOneDatasetDataById(item._id);
                              getData(pageNum);
                            } catch (error) {
                              toast({
                                title: getErrText(error),
                                status: 'error'
                              });
                            }
                            setIsLoading(false);
                          })();
                        }}
                      />
                    )}
                  </Flex>
                </Box>
              </Card>
            ))}
          </Grid>
          {total > pageSize && (
            <Flex mt={2} justifyContent={'center'}>
              <Pagination />
            </Flex>
          )}
          {total === 0 && (
            <Flex flexDirection={'column'} alignItems={'center'} pt={'10vh'}>
              <MyIcon name="empty" w={'48px'} h={'48px'} color={'transparent'} />
              <Box mt={2} color={'myGray.500'}>
                {t('core.dataset.data.Empty Tip')}
              </Box>
            </Flex>
          )}
        </Box>
      </Flex>

      {/* metadata drawer */}
      <Drawer isOpen={isOpen} placement="right" size={'md'} onClose={onClose}>
        <DrawerOverlay />
        <DrawerContent>
          <DrawerHeader>{t('core.dataset.collection.metadata.metadata')}</DrawerHeader>

          <DrawerBody>
            {metadataList.map((item) => (
              <Flex key={item.label} alignItems={'center'} mb={5} wordBreak={'break-all'}>
                <Box color={'myGray.500'} flex={'0 0 100px'}>
                  {item.label}
                </Box>
                <Box>{item.value}</Box>
              </Flex>
            ))}
            {collection?.sourceId && (
              <Button
                variant={'whitePrimary'}
                onClick={() => collection.sourceId && getFileAndOpen(collection.sourceId)}
              >
                {t('core.dataset.collection.metadata.read source')}
              </Button>
            )}
          </DrawerBody>

          <DrawerFooter>
            <Button variant={'whitePrimary'} onClick={onClose}>
              {t('common.Close')}
            </Button>
          </DrawerFooter>
        </DrawerContent>
      </Drawer>

      {editDataId !== undefined && collection && (
        <InputDataModal
          collectionId={collection._id}
          dataId={editDataId}
          onClose={() => setEditDataId(undefined)}
          onSuccess={() => getData(pageNum)}
          onDelete={() => getData(pageNum)}
        />
      )}
      <ConfirmModal />
      <Loading fixed={false} />
    </Box>
  );
};

export default React.memo(DataCard);