import Button from '@/components/Button';
import Card from '@/components/Card';
import Dropdown from '@/components/Dropdown';
import DateInput from '@/components/input/DateInput';
import SelectInput, {
  OptionType,
  useSelect,
} from '@/components/input/SelectInput';
import Menu from '@/components/menu/Menu';
import MenuItem from '@/components/menu/MenuItem';
import Modal, { useModal } from '@/components/Modal';
import Table from '@/components/Table';
import { isResponseSuccess } from '@/lib/api-helper';
import { formatCurrency, formatDate, formatNumber } from '@/lib/helper';
import { SupplierApi } from '@/services/api/master-data';
import { FinanceApi } from '@/services/api/report/finance-report';
import { DebtRow, DebtSupplier } from '@/types/api/report/debt-supplier';
import { generateDebtSupplierExcel } from '@/components/pages/report/finance/export/DebtSupplierExportXLSX';
import { generateDebtSupplierPDF } from '@/components/pages/report/finance/export/DebtSupllierExportPDF';
import { Icon } from '@iconify/react';
import { ColumnDef } from '@tanstack/react-table';
import { useCallback, useMemo, useState } from 'react';
import toast from 'react-hot-toast';
import useSWR from 'swr';
import Pagination from '@/components/Pagination';

const DebtSupplierTab = () => {
  // ===== STATE MANAGEMENT =====
  const [isPdfExportLoading, setIsPdfExportLoading] = useState(false);
  const [isExcelExportLoading, setIsExcelExportLoading] = useState(false);
  const isAnyExportLoading = isPdfExportLoading || isExcelExportLoading;

  // ===== PAGINATION STATE =====
  const [currentPage, setCurrentPage] = useState(1);
  const [pageSize, setPageSize] = useState(10);

  // ===== SUBMISSION STATE =====
  const [isSubmitted, setIsSubmitted] = useState(false);

  // ===== FILTER STATE =====
  const [filterSupplier, setFilterSupplier] = useState<OptionType[]>([]);
  const [filterStartDate, setFilterStartDate] = useState('');
  const [filterEndDate, setFilterEndDate] = useState('');
  const [filterDataType, setFilterDataType] = useState<OptionType>();
  const [filterErrors, setFilterErrors] = useState<Record<string, string>>({});

  const filterModal = useModal();

  const { options: supplierOptions, isLoadingOptions: isLoadingSuppliers } =
    useSelect(SupplierApi.basePath, 'id', 'name', '', {
      limit: 'limit',
    });

  const dataTypeOptions = useMemo(
    () => [
      { value: 'do_date', label: 'Tanggal Terima' },
      { value: 'po_date', label: 'Tanggal PO' },
    ],
    []
  );

  // ===== FILTER HANDLERS =====
  const handleResetFilters = useCallback(() => {
    setIsSubmitted(false);
    setFilterSupplier([]);
    setFilterStartDate('');
    setFilterEndDate('');
    setFilterErrors({});
  }, []);

  const handleApplyFilters = useCallback(() => {
    const errors: Record<string, string> = {};

    if (!filterStartDate) {
      errors.start_date = 'Tanggal mulai wajib diisi';
    }
    if (!filterEndDate) {
      errors.end_date = 'Tanggal akhir wajib diisi';
    }

    setFilterErrors(errors);

    if (Object.keys(errors).length === 0) {
      setIsSubmitted(true);
      setCurrentPage(1);
      filterModal.closeModal();
    }
  }, [filterModal, filterStartDate, filterEndDate]);

  // ===== DATA FETCHING =====
  const { data: debtSupplier, isLoading } = useSWR(
    isSubmitted
      ? () => {
          const params = {
            supplier_ids:
              filterSupplier.length > 0
                ? filterSupplier.map((v) => String(v.value)).join(',')
                : undefined,
            filter_by: filterDataType?.value || 'do_date',
            start_date: filterStartDate || undefined,
            end_date: filterEndDate || undefined,
            page: currentPage,
            limit: pageSize,
          };

          return ['debt-supplier-report', params];
        }
      : null,
    ([, params]) =>
      FinanceApi.getDebtSupplierReport(
        params.supplier_ids,
        params.filter_by?.toString(),
        params.start_date,
        params.end_date,
        params.page,
        params.limit
      )
  );
  // const { data: debtSupplier, isLoading } = useSWR(FinanceApi.basePath, () =>
  //   FinanceApi.getDebtSupplierReport()
  // );

  const data: DebtSupplier[] = useMemo(
    () =>
      isResponseSuccess(debtSupplier)
        ? (debtSupplier?.data as unknown as DebtSupplier[]) || []
        : [],
    [debtSupplier]
  );
  const meta =
    isResponseSuccess(debtSupplier) && debtSupplier?.meta
      ? debtSupplier.meta
      : null;

  // ===== EXPORT DATA FETCHER =====
  const debtSupplierExport = useCallback(async (): Promise<
    DebtSupplier[] | null
  > => {
    const params = {
      supplier_ids:
        filterSupplier.length > 0
          ? filterSupplier.map((v) => String(v.value)).join(',')
          : undefined,
      filter_by: 'do_date' as const,
      start_date: filterStartDate || undefined,
      end_date: filterEndDate || undefined,
      date_type: filterDataType ? filterDataType.value : undefined,
      limit: 100,
      page: 1,
    };

    const response = await FinanceApi.getDebtSupplierReport(
      params.supplier_ids,
      params.filter_by,
      params.start_date,
      params.end_date,
      params.page,
      params.limit
    );

    return isResponseSuccess(response)
      ? (response.data as unknown as DebtSupplier[])
      : null;
  }, [filterSupplier, filterStartDate, filterEndDate]);

  // ===== EXPORT HANDLERS =====
  const handleExportExcel = useCallback(async () => {
    setIsExcelExportLoading(true);
    try {
      const allDataForExport = await debtSupplierExport();

      if (
        !allDataForExport ||
        !Array.isArray(allDataForExport) ||
        allDataForExport.length === 0
      ) {
        toast.error('Tidak ada data untuk diekspor.');
        return;
      }

      generateDebtSupplierExcel({ data: allDataForExport });
      toast.success('Excel berhasil dibuat dan diunduh.');
    } catch {
      toast.error('Gagal membuat Excel. Silakan coba lagi.');
    } finally {
      setIsExcelExportLoading(false);
    }
  }, [debtSupplierExport]);

  const handleExportPdf = useCallback(async () => {
    setIsPdfExportLoading(true);
    try {
      const allDataForExport = await debtSupplierExport();

      if (
        !allDataForExport ||
        !Array.isArray(allDataForExport) ||
        allDataForExport.length === 0
      ) {
        toast.error('Tidak ada data untuk diekspor.');
        return;
      }

      await generateDebtSupplierPDF({ data: allDataForExport });
      toast.success('PDF berhasil dibuat dan diunduh.');
    } catch {
      toast.error('Gagal membuat PDF. Silakan coba lagi.');
    } finally {
      setIsPdfExportLoading(false);
    }
  }, [debtSupplierExport]);

  // ===== PAGINATION HANDLERS =====
  const handlePageChange = (page: number) => {
    setCurrentPage(page);
  };

  const handleRowChange = (pageSize: number) => {
    setPageSize(pageSize);
  };

  const handleNextPage = () => {
    if (meta && currentPage < meta.total_pages) {
      setCurrentPage(currentPage + 1);
    }
  };

  const handlePrevPage = () => {
    if (currentPage > 1) {
      setCurrentPage(currentPage - 1);
    }
  };

  const getTableColumns = (supplier: DebtSupplier): ColumnDef<DebtRow>[] => [
    {
      id: 'no',
      header: 'No',
      cell: (props) => props.row.index + 1,
    },
    {
      id: 'pr_number',
      header: 'Nomor PR',
      accessorKey: 'pr_number',
      cell: (props) => {
        const value = props.row.original.pr_number;
        return value || '-';
      },
    },
    {
      id: 'po_number',
      header: 'Nomor PO',
      accessorKey: 'po_number',
      cell: (props) => {
        const value = props.row.original.po_number;
        return value || '-';
      },
    },
    {
      id: 'pr_date',
      header: 'Tanggal PR',
      accessorKey: 'pr_date',
      cell: (props) => {
        const value = props.row.original.pr_date;
        return formatDate(value, 'DD MMM YYYY');
      },
    },
    {
      id: 'po_date',
      header: 'Tanggal PO',
      accessorKey: 'po_date',
      cell: (props) => {
        const value = props.row.original.po_date;
        return formatDate(value, 'DD MMM YYYY');
      },
    },
    {
      id: 'aging',
      header: 'Aging',
      accessorKey: 'aging',
      cell: (props) => {
        const value = props.row.original.aging;
        return <div className='text-center'>{formatNumber(value)} Hari</div>;
      },
      footer: () => {
        const value = supplier.total.aging;
        return <div className='text-center'>{formatNumber(value)} Hari</div>;
      },
    },
    {
      id: 'area',
      header: 'Area',
      accessorKey: 'area',
      cell: (props) => {
        const value = props.row.original.area?.name;
        return value || '-';
      },
    },
    {
      id: 'warehouse',
      header: 'Gudang',
      accessorKey: 'warehouse',
      cell: (props) => {
        const value = props.row.original.warehouse?.name;
        return value || '-';
      },
    },
    {
      id: 'due_date',
      header: 'Tanggal Jatuh Tempo',
      accessorKey: 'due_date',
      cell: (props) => {
        const value = props.row.original.due_date;
        return formatDate(value, 'DD MMM YYYY');
      },
    },
    {
      id: 'due_status',
      header: 'Status Jatuh Tempo',
      accessorKey: 'due_status',
      cell: (props) => {
        const value = props.row.original.due_status;
        return value || '-';
      },
    },
    {
      id: 'total_price',
      header: 'Total Harga',
      accessorKey: 'total_price',
      cell: (props) => {
        const value = props.row.original.total_price;
        return <div className='text-right'>{formatCurrency(value)}</div>;
      },
      footer: () => {
        const value = supplier.total.total_price;
        return <div className='text-right'>{formatCurrency(value)}</div>;
      },
    },
    {
      id: 'payment_price',
      header: 'Harga Pembayaran',
      accessorKey: 'payment_price',
      cell: (props) => {
        const value = props.row.original.payment_price;
        return <div className='text-right'>{formatCurrency(value)}</div>;
      },
      footer: () => {
        const value = supplier.total.payment_price;
        return <div className='text-right'>{formatCurrency(value)}</div>;
      },
    },
    {
      id: 'debt_price',
      header: 'Harga Hutang',
      accessorKey: 'debt_price',
      cell: (props) => {
        const value = props.row.original.debt_price;
        return (
          <div className={`text-right ${value < 0 ? 'text-red-500' : ''}`}>
            {formatCurrency(value)}
          </div>
        );
      },
      footer: () => {
        const value = supplier.total.debt_price;
        return (
          <div className={`text-right ${value < 0 ? 'text-red-500' : ''}`}>
            {formatCurrency(value)}
          </div>
        );
      },
    },
    {
      id: 'status',
      header: 'Status',
      accessorKey: 'status',
      cell: (props) => {
        const value = props.row.original.status;
        return value || '-';
      },
    },
    {
      id: 'travel_number',
      header: 'Nomor Perjalanan',
      accessorKey: 'travel_number',
      cell: (props) => {
        const value = props.row.original.travel_number;
        return value || '-';
      },
    },
  ];
  return (
    <>
      <div className='w-full p-0 sm:p-4 flex flex-col gap-4'>
        <Card
          subtitle='Laporan > Kontrol Hutang Supplier'
          className={{ wrapper: 'w-full', body: 'p-1!' }}
        >
          <div className='mb-4 flex justify-end gap-2 [&_button]:px-4'>
            <Button variant='outline' onClick={filterModal.openModal}>
              <Icon icon='heroicons:funnel' width={18} height={18} />
              Filter
            </Button>

            <Dropdown
              trigger={
                <Button variant='outline' isLoading={isAnyExportLoading}>
                  <Icon
                    icon='heroicons:cloud-arrow-down'
                    width={18}
                    height={18}
                  />
                  Export
                </Button>
              }
              align='end'
            >
              <Menu>
                <MenuItem title='Excel' onClick={handleExportExcel} />
                <MenuItem title='PDF' onClick={handleExportPdf} />
              </Menu>
            </Dropdown>
          </div>
        </Card>

        {!isSubmitted ? (
          <div className='mt-6 text-center text-gray-500'>
            Silakan klik tombol Filter untuk mengatur filter dan menampilkan
            data.
          </div>
        ) : isLoading ? (
          <div className='w-full flex flex-row justify-center items-center p-4'>
            <span className='loading loading-spinner loading-xl' />
          </div>
        ) : data.length === 0 ? (
          <div className='mt-6 text-center text-gray-500'>
            Tidak ada data yang dapat ditampilkan...
          </div>
        ) : (
          data.map((supplierReport) => {
            return (
              <Card
                key={supplierReport.supplier.id}
                title={supplierReport.supplier.name}
                className={{ wrapper: 'w-full' }}
                variant='bordered'
                collapsible={true}
              >
                <Table
                  data={supplierReport.rows}
                  columns={getTableColumns(supplierReport)}
                  pageSize={supplierReport.rows.length}
                  renderFooter={supplierReport.rows.length > 0}
                  className={{
                    containerClassName: 'w-full',
                    tableWrapperClassName: 'overflow-x-auto mt-4',
                    tableClassName: 'w-full table-auto text-sm',
                    headerRowClassName: 'border-b border-b-gray-200 bg-gray-50',
                    headerColumnClassName:
                      'px-4 py-3 text-xs font-semibold text-gray-700 text-left border border-gray-200',
                    bodyRowClassName:
                      'hover:bg-gray-50 transition-colors border-b border-l border-r border-b-gray-200 border-l-gray-200 border-r-gray-200',
                    bodyColumnClassName:
                      'px-4 py-3 text-xs text-gray-900 whitespace-nowrap',
                    tableFooterClassName:
                      'bg-gray-100 font-semibold border border-gray-200',
                    footerRowClassName: 'border-t-2 border-gray-300',
                    footerColumnClassName:
                      'px-4 py-3 text-xs text-gray-900 whitespace-nowrap',
                    paginationClassName: 'hidden',
                  }}
                />
              </Card>
            );
          })
        )}
      </div>
      {meta && data.length > 0 && (
        <div className='mt-6'>
          <Pagination
            currentPage={meta.page}
            totalItems={meta.total_results}
            onPageChange={handlePageChange}
            onRowChange={handleRowChange}
            onNextPage={handleNextPage}
            onPrevPage={handlePrevPage}
            rowOptions={[10, 25, 50, 100]}
            itemsPerPage={meta.limit}
          />
        </div>
      )}

      {/* Filter Modal */}
      <Modal
        ref={filterModal.ref}
        className={{
          modal: 'p-0',
          modalBox: 'p-0 rounded-2xl xl:max-w-4/12 max-w-sm',
        }}
      >
        <div className='space-y-6'>
          {/* Modal Header */}
          <div className='flex items-center justify-between gap-2 py-3 border-b border-gray-300 px-4'>
            <div className='flex items-center gap-2 text-primary'>
              <Icon icon='heroicons:funnel' width={20} height={20} />
              <h3 className='font-semibold'>Filter Data</h3>
            </div>
            <Button
              variant='link'
              onClick={filterModal.closeModal}
              className='text-gray-500 hover:text-gray-700 transition-colors cursor-pointer'
            >
              <Icon icon='heroicons:x-mark' width={20} height={20} />
            </Button>
          </div>
          <div className='space-y-4 px-4'>
            <div className='grid grid-cols-1 sm:grid-cols-2 sm:gap-4'>
              <div>
                <DateInput
                  label='Tanggal'
                  name='start_date'
                  value={filterStartDate}
                  onChange={(e) => {
                    setFilterStartDate(e.target.value);
                    setFilterErrors((prev) => ({ ...prev, start_date: '' }));
                  }}
                  className={{ wrapper: 'w-full' }}
                />
                {filterErrors.start_date && (
                  <p className='text-red-500 text-sm mt-1'>
                    {filterErrors.start_date}
                  </p>
                )}
              </div>

              <div className='mt-auto'>
                <DateInput
                  label='‎ '
                  name='end_date'
                  value={filterEndDate}
                  onChange={(e) => {
                    setFilterEndDate(e.target.value);
                    setFilterErrors((prev) => ({ ...prev, end_date: '' }));
                  }}
                  className={{ wrapper: 'w-full' }}
                />
                {filterErrors.end_date && (
                  <p className='text-red-500 text-sm mt-1'>
                    {filterErrors.end_date}
                  </p>
                )}
              </div>
            </div>

            <div>
              <SelectInput
                label='Supplier'
                placeholder='Pilih Supplier'
                isMulti
                options={supplierOptions}
                value={filterSupplier}
                onChange={(val) => {
                  setFilterSupplier(
                    Array.isArray(val) ? val : val ? [val] : []
                  );
                }}
                isLoading={isLoadingSuppliers}
                isClearable
                className={{ wrapper: 'w-full' }}
              />
            </div>

            <div>
              <SelectInput
                label='Filter Berdasarkan'
                placeholder='Pilih Filter Berdasarkan'
                options={dataTypeOptions}
                value={filterDataType}
                onChange={(val) => {
                  setFilterDataType(val ? (val as OptionType) : undefined);
                }}
                className={{ wrapper: 'w-full' }}
              />
            </div>
          </div>

          {/* Action Buttons */}
          <div className='flex justify-between gap-4 py-4 mt-8 border-t border-gray-300 bg-gray-100'>
            <Button
              variant='soft'
              className='ms-4 min-w-36 rounded-lg'
              onClick={handleResetFilters}
            >
              Reset Filter
            </Button>
            <Button
              className='me-4 min-w-36 rounded-lg'
              onClick={handleApplyFilters}
            >
              Apply Filter
            </Button>
          </div>
        </div>
      </Modal>
    </>
  );
};

export default DebtSupplierTab;