import * as React from 'react';
import { enqueueSnackbar } from 'notistack';
import { useState, useEffect, Fragment, useRef } from 'react';
import dayjs from 'dayjs';
var utc = require('dayjs/plugin/utc');
dayjs.extend(utc);
import axios from 'axios';

import {
  Avatar,
  Box,
  Button,
  Grid,
  IconButton,
  Paper,
  Stack,
  Typography,
  Table,
  TableCell,
  TableBody,
  TableHead,
  Dialog,
  TableRow,
  DialogContent,
  Tooltip,
  Skeleton,
  CircularProgress,
  InputBase,
  Backdrop,
  SpeedDial,
  SpeedDialIcon,
  SpeedDialAction,
  Badge,
  TableContainer,
  Checkbox
} from '@mui/material';
import {
  MdAccessTime,
  MdCancel,
  MdCheckCircle,
  MdClose,
  MdCurrencyRupee,
  MdDeleteOutline,
  MdHistoryToggleOff,
  MdHourglassEmpty,
  MdInventory2,
  MdLocalShipping,
  MdSearch,
  MdStraighten,
  MdCalendarMonth,
  MdReceiptLong,
  MdClear,
  MdNotes
} from 'react-icons/md';
import { DeleteOutlined } from '@ant-design/icons';
import Loader from 'components/Loader';
import { useHotkeyFocus } from 'components/nearle_components/useHotkeyFocus';
import DateFilterDialog from 'components/nearle_components/DateFilterDialog';
import CircularLoader from 'components/nearle_components/CircularLoader';
import AiImage from '../../../assets/images/aiImage.png';
import { useQuery, useMutation, useInfiniteQuery } from '@tanstack/react-query';
import { useNavigate, useLocation } from 'react-router-dom';
import {
  fetchPercentageData,
  createAutomationDeliveries,
  cancelMultipleOrder,
  getallriders,
  fetchorderscount
} from '../api/api';

// ============================================================================
// Design tokens — shared with the rest of the redesigned operator pages.
// ============================================================================
const DT = {
  radiusPill: 999,
  radiusCard: 16,
  shadowSoft: '0 14px 40px rgba(15, 23, 42, 0.10)',
  shadowMd: '0 8px 24px rgba(15, 23, 42, 0.08)',
  shadowPop: '0 18px 50px rgba(15, 23, 42, 0.18)',
  textPrimary: '#0f172a',
  textSecondary: '#64748b',
  textMuted: '#94a3b8',
  borderSubtle: '#e2e8f0',
  divider: '#f1f5f9',
  surface: '#ffffff',
  surfaceAlt: '#f8fafc'
};
const dtA = (c, suffix) => `${c}${suffix}`;
const tint = (c) => dtA(c, '08');
const soft = (c) => dtA(c, '18');
const ring = (c) => dtA(c, '26');
const edge = (c) => dtA(c, '55');

const dtTint = tint;
const dtSoft = soft;
const dtRing = ring;
const dtEdge = edge;

const BRAND = '#662582';
const BRAND_LIGHT = '#9255AB';


// Semantic per-row status palette — colors per brand standard:
// green=delivered, amber=pending, blue=created/processing, red=cancelled,
// dark-red=failed, purple=on-hold.
const ROW_STATUS_META = {
  created:    { label: 'Created',    color: '#3b82f6', icon: MdLocalShipping },
  pending:    { label: 'Pending',    color: '#f59e0b', icon: MdHourglassEmpty },
  processing: { label: 'Processing', color: '#3b82f6', icon: MdAccessTime },
  modified:   { label: 'Confirmed',  color: '#10b981', icon: MdCheckCircle },
  confirmed:  { label: 'Confirmed',  color: '#10b981', icon: MdCheckCircle },
  ready:      { label: 'Accepted',   color: '#6366f1', icon: MdCheckCircle },
  active:     { label: 'Picked',     color: '#8b5cf6', icon: MdLocalShipping },
  onhold:     { label: 'On Hold',    color: '#8b5cf6', icon: MdHistoryToggleOff },
  closed:     { label: 'Closed',     color: '#06b6d4', icon: MdCheckCircle },
  delivered:  { label: 'Delivered',  color: '#10b981', icon: MdCheckCircle },
  failed:     { label: 'Failed',     color: '#991b1b', icon: MdCancel },
  cancelled:  { label: 'Cancelled',  color: '#ef4444', icon: MdCancel }
};

// Top-level pill tabs.
const ORDERS_STATUS_TABS = [
  { idx: 0, status: 'created',   label: 'Created',   color: BRAND,     icon: MdLocalShipping,  countKey: 'created' }
];

const StatusBadge = ({ status }) => {
  const meta = ROW_STATUS_META[String(status || '').toLowerCase()] || {
    label: status || '—',
    color: DT.textMuted,
    icon: MdHistoryToggleOff
  };
  const Icon = meta.icon;
  return (
    <Box
      sx={{
        display: 'inline-flex',
        alignItems: 'center',
        gap: 0.5,
        px: 1.125,
        py: 0.375,
        borderRadius: 999,
        bgcolor: meta.color,
        color: '#fff',
        fontSize: 11,
        fontWeight: 700,
        letterSpacing: 0.2,
        whiteSpace: 'nowrap',
        minWidth: 86,
        justifyContent: 'center',
        boxShadow: `0 1px 2px ${ring(meta.color)}`
      }}
    >
      <Icon size={12} /> {meta.label}
    </Box>
  );
};

const MetricCell = ({ value, color, icon, isMoney = false }) => {
  const n = Number(value);
  const display = isMoney ? `₹${Number.isFinite(n) ? n.toFixed(2) : '0.00'}` : Number.isFinite(n) ? n : value || 0;
  const isZero = !Number.isFinite(n) || n === 0;
  if (isZero) {
    return (
      <Typography variant="caption" sx={{ color: DT.textMuted, fontWeight: 700 }}>
        {display}
      </Typography>
    );
  }
  return (
    <Box
      sx={{
        display: 'inline-flex',
        alignItems: 'center',
        gap: 0.5,
        px: 0.875,
        py: 0.25,
        borderRadius: 999,
        bgcolor: tint(color),
        border: `1px solid ${edge(color)}`,
        color,
        fontSize: 12,
        fontWeight: 800,
        whiteSpace: 'nowrap'
      }}
    >
      {icon}
      {display}
    </Box>
  );
};

const Orders = () => {
  const navigate = useNavigate();
  const location = useLocation();
  const tid = localStorage.getItem('tenantid');
  const loadMoreRef = useRef();
  const containerRef = useRef();
  const [page, setPage] = useState(0);
  const [rowsPerPage, setRowsPerPage] = useState(10);
  const [tabvalue, setTabvalue] = useState(0);
  const [tabstatus, setTabstatus] = useState('Created');
  const [currentStatus, setCurrentStatus] = useState('created');
  const [cancelOpen, setCancelOpen] = useState(false);
  const [orderheaderid, setOrderheaderid] = useState('');
  const locationId = 0;
  const locoName = 'All Locations';
  const [dateOpen, setDateOpen] = useState(false);
  const [datestatus, setDatestatus] = useState('Today');
  const [startdate, setStartdate] = useState(dayjs().format('YYYY-MM-DD'));
  const [enddate, setEnddate] = useState(dayjs().format('YYYY-MM-DD'));
  const [searchword, setSearchword] = useState('');
  const [debouncedSearch, setDebouncedSearch] = useState('');

  // Floating button and Dialog states
  const [speedDialOpen, setSpeedDialOpen] = useState(false);
  const [multiDeleteDialog, setMultiDeleteDialog] = useState(false);
  const [createloader, setCreateloader] = useState(false);
  const [isLoading, setIsLoading] = useState(false);
  const [deliverylist, setDeliverylist] = useState([]);

  useEffect(() => {
    const handler = setTimeout(() => {
      setDebouncedSearch(searchword);
    }, 400);
    return () => clearTimeout(handler);
  }, [searchword]);

  const handleChangetab = (e, i) => {
    setSearchword('');
    setRowsPerPage(10);
    setTabvalue(i);
    const tab = ORDERS_STATUS_TABS[i];
    setTabstatus(tab.label);
    setCurrentStatus(tab.status);
    setPage(0);
  };

  const textFieldRef = useRef(null);
  useHotkeyFocus(textFieldRef, 'k');

  // React Queries
  const {
    data: percentageData,
    isLoading: fetchpercentageIsLoading,
    refetch: percentagedataRefetch
  } = useQuery({
    queryKey: ['percentageData', locationId, startdate, enddate, tid, locationId],
    queryFn: fetchPercentageData,
    enabled: true,
    refetchInterval: 15000
  });

  const {
    data: ordersCountData,
    refetch: orderscountRefetch
  } = useQuery({
    queryKey: ['ordersCount', locationId, startdate, enddate, currentStatus, tid, locationId],
    queryFn: fetchorderscount,
    refetchOnMount: true,
    refetchOnWindowFocus: true,
    refetchInterval: 15000
  });

  const {
    data: autoRiders
  } = useQuery({
    queryKey: ['getallriders'],
    queryFn: getallriders,
    refetchOnMount: true,
    refetchOnWindowFocus: true
  });

  const cancelorder = async () => {
    await axios
      .put(`${process.env.REACT_APP_URL}/orders/updateorder`, {
        orderheaderid: orderheaderid,
        orderstatus: 'cancelled',
        cancelled: dayjs().format('YYYY-MM-DD HH:mm:ss')
      })
      .then((res) => {
        if (res.data.status) {
          enqueueSnackbar('Order Cancelled Successfully', {
            variant: 'success',
            anchorOrigin: { vertical: 'top', horizontal: 'right' },
            autoHideDuration: 2000
          });
          refetchOrders();
          orderscountRefetch();
          percentagedataRefetch();
          setCancelOpen(false);
        }
      })
      .catch((err) => {
        console.log(err);
      });
  };

  const fetchOrders = async ({ pageParam = 1 }) => {
    const res = await axios.get(
      `${process.env.REACT_APP_URL}/orders/tenant/getorders/?tenantid=${tid}&locationid=${locationId}&status=${currentStatus}&fromdate=${startdate}&todate=${enddate}&pageno=${pageParam}&pagesize=${rowsPerPage}&keyword=${debouncedSearch}`
    );
    return {
      data: res.data.details,
      nextPage: res.data.details.length === rowsPerPage ? pageParam + 1 : undefined
    };
  };

  const {
    data: rowdata,
    fetchNextPage,
    isLoading: isLoadingGetOrders,
    hasNextPage,
    isFetchingNextPage,
    refetch: refetchOrders
  } = useInfiniteQuery({
    queryKey: [tabstatus, startdate, enddate, page, rowsPerPage, debouncedSearch, locationId],
    queryFn: fetchOrders,
    getNextPageParam: (lastPage) => lastPage.nextPage,
    refetchInterval: 15000
  });

  const rows = rowdata ? rowdata.pages.flatMap((p) => p.data) : [];

  useEffect(() => {
    if (!hasNextPage) return;
    const observer = new IntersectionObserver(
      (entries) => {
        if (entries[0].isIntersecting) {
          fetchNextPage();
        }
      },
      {
        root: null,
        rootMargin: '0px 0px 400px 0px',
        threshold: 0
      }
    );
    if (loadMoreRef.current) observer.observe(loadMoreRef.current);
    return () => {
      if (loadMoreRef.current) observer.unobserve(loadMoreRef.current);
    };
  }, [hasNextPage, fetchNextPage]);

  const handleScroll = (event) => {
    const { scrollTop, scrollHeight, clientHeight } = event.currentTarget;
    if (scrollTop + clientHeight >= scrollHeight - 50) {
      if (hasNextPage && !isFetchingNextPage) {
        fetchNextPage();
      }
    }
  };

  // ==============================|| Mutations ||============================== //

  const createDeliveryMutation = useMutation({
    mutationFn: createAutomationDeliveries,
    onSuccess: (data, variables) => {
      enqueueSnackbar('Orders Optimised Successfully', { variant: 'success', autoHideDuration: 2000, anchorOrigin: { vertical: 'top', horizontal: 'right' } });
      orderscountRefetch();
      refetchOrders();
      setCreateloader(false);
      navigate('/nearle/dispatch/preview', {
        state: {
          dispatchPreviewData: data,
          aiMode: 1,
          selectedMode: { value: 1 },
          deliveryData: variables?.deliveries || [],
          appId: locationId,
          startdate: startdate,
          tenantId: tid,
          autoRiders: autoRiders || []
        }
      });
    },
    onError: (error) => {
      enqueueSnackbar(error.message, { variant: 'error', autoHideDuration: 4000 });
      setCreateloader(false);
    },
    onSettled: () => {
      setCreateloader(false);
      setIsLoading(false);
    }
  });

  const cancelMultipleOrderMutation = useMutation({
    mutationFn: cancelMultipleOrder,
    onSuccess: (data) => {
      if (data.status) {
        setMultiDeleteDialog(false);
        enqueueSnackbar('Orders Cancelled Successfully', { variant: 'success', autoHideDuration: 2000 });
        refetchOrders();
        orderscountRefetch();
        percentagedataRefetch();
        setDeliverylist([]);
      }
    },
    onError: (error) => {
      enqueueSnackbar(error.message, { variant: 'error', autoHideDuration: 4000 });
    }
  });

  const handleCreateDelivery = async () => {
    if (rows.length === 0) return;
    setIsLoading(true);
    setCreateloader(true);
    const deliveryData = rows.map((val) => ({
      ...val,
      deliveryid: 0,
      deliverydate: dayjs(val.deliverydate).utc().format('YYYY-MM-DD HH:mm:ss'),
      assigntime: dayjs().format('YYYY-MM-DD HH:mm:ss'),
      orderstatus: 'pending',
      orderamount: val.deliverycharge,
      droplat: val.deliverylat,
      droplon: val.deliverylong,
      pickuplat: val.pickuplat,
      pickuplon: val.pickuplong,
      ordernotes: val.ordernotes,
      deliverycharges: val.deliverycharge,
      pickuplocation: val.pickupsuburb,
      deliverylocation: val.deliverysuburb
    }));

    createDeliveryMutation.mutate({
      deliveries: deliveryData,
      selectedMode: { value: 1 },
      hypertuning_params: 'balanced',
      absent_riders: []
    });
  };

  // KPI tile definitions.
  const kpiCards = [
    { key: 'created',   label: 'Created Orders',   color: BRAND,     icon: MdLocalShipping,  value: percentageData?.created,         percentage: percentageData?.percentage1 },
    { key: 'pending',   label: 'Pending Orders',   color: '#f59e0b', icon: MdHourglassEmpty, value: percentageData?.uncoveredOrders, percentage: percentageData?.percentage2 }
  ];

  return (
    <Fragment>
      {(fetchpercentageIsLoading || isLoadingGetOrders || isLoading || createloader) && (
        <>
          <Loader />
          <CircularLoader />
        </>
      )}

      {rows.length > 0 && currentStatus === 'created' && (
        <Button
          variant="contained"
          onClick={handleCreateDelivery}
          sx={{
            position: 'fixed',
            bottom: 32,
            right: 24,
            bgcolor: BRAND,
            color: '#fff',
            px: 3,
            py: 1.5,
            borderRadius: 999,
            fontWeight: 850,
            boxShadow: `0 10px 30px ${ring(BRAND)}`,
            zIndex: 1000,
            textTransform: 'none',
            fontSize: '14px',
            gap: 1,
            '&:hover': {
              bgcolor: BRAND_LIGHT,
              transform: 'translateY(-2px)'
            }
          }}
          startIcon={<MdLocalShipping size={18} />}
        >
          Assign Orders ({rows.length})
        </Button>
      )}

      {/* ============================================= || Header (compact) || ============================================= */}
      <Paper
        elevation={0}
        sx={{
          mb: { xs: 1, md: 1.25 },
          px: { xs: 1.5, sm: 2 },
          py: { xs: 1, sm: 1.25 },
          borderRadius: 2,
          border: '1px solid',
          borderColor: DT.borderSubtle,
          background: `linear-gradient(135deg, ${tint(BRAND)} 0%, ${tint(BRAND_LIGHT)} 100%)`,
          boxShadow: DT.shadowMd
        }}
      >
        <Stack
          direction={{ xs: 'column', sm: 'row' }}
          alignItems={{ xs: 'flex-start', sm: 'center' }}
          justifyContent="space-between"
          spacing={{ xs: 1, sm: 1.5 }}
        >
          <Stack direction="row" alignItems="center" spacing={1.25}>
            <Avatar
              variant="rounded"
              sx={{
                width: 36,
                height: 36,
                bgcolor: BRAND,
                color: '#fff',
                borderRadius: 1.5,
                boxShadow: `0 4px 12px ${ring(BRAND)}`
              }}
            >
              <MdLocalShipping size={19} />
            </Avatar>
            <Stack spacing={0.125}>
              <Typography
                variant="h3"
                sx={{
                  fontWeight: 800,
                  color: DT.textPrimary,
                  lineHeight: 1.1,
                  fontSize: { xs: '1.1rem', sm: '1.25rem', md: '1.375rem' }
                }}
              >
                Orders
              </Typography>
              <Stack direction="row" alignItems="center" spacing={0.75}>
                <Box
                  sx={{
                    width: 7,
                    height: 7,
                    borderRadius: '50%',
                    bgcolor: '#10b981',
                    boxShadow: '0 0 0 3px rgba(16,185,129,0.18)'
                  }}
                />
                <Typography sx={{ fontSize: 11.5, color: DT.textSecondary, fontWeight: 600 }}>
                  Live · {locoName} · {datestatus}
                </Typography>
              </Stack>
            </Stack>
          </Stack>

        </Stack>
      </Paper>





      {/* ============================================= || Status Tabs + Search (compact) || ============================================= */}
      <Paper
        elevation={0}
        sx={{
          mt: { xs: 1, md: 1.25 },
          p: { xs: 0.875, md: 1.125 },
          borderTopLeftRadius: 2,
          borderTopRightRadius: 2,
          borderBottomLeftRadius: 0,
          borderBottomRightRadius: 0,
          border: '1px solid',
          borderColor: DT.borderSubtle,
          borderBottom: 0,
          background: '#fff'
        }}
      >
        <Stack
          direction="row"
          alignItems="center"
          justifyContent="space-between"
          gap={1.5}
          sx={{ flexWrap: 'wrap-reverse' }}
        >
          <Stack
            direction="row"
            spacing={0.75}
            sx={{
              flex: 1,
              overflowX: 'auto',
              py: 0.5,
              px: 0.25,
              '&::-webkit-scrollbar': { height: 6 },
              '&::-webkit-scrollbar-thumb': { backgroundColor: DT.borderSubtle, borderRadius: 4 }
            }}
          >
            {ORDERS_STATUS_TABS.map((t) => {
              const Icon = t.icon;
              const active = tabvalue === t.idx;
              const count = ordersCountData?.[t.countKey] ?? 0;
              return (
                <Box
                  key={t.status}
                  onClick={(e) => handleChangetab(e, t.idx)}
                  sx={{
                    display: 'inline-flex',
                    alignItems: 'center',
                    gap: { xs: 0.625, md: 0.875 },
                    pl: 0.5,
                    pr: { xs: 1, md: 1.25 },
                    py: 0.5,
                    flexShrink: 0,
                    cursor: 'pointer',
                    borderRadius: 999,
                    border: `1.5px solid ${active ? t.color : edge(t.color)}`,
                    bgcolor: active ? t.color : tint(t.color),
                    color: active ? '#fff' : t.color,
                    fontWeight: 700,
                    boxShadow: active ? `0 6px 18px ${ring(t.color)}` : 'none',
                    transition: 'all 0.18s',
                    '&:hover': {
                      borderColor: t.color,
                      boxShadow: active ? `0 6px 18px ${ring(t.color)}` : `0 0 0 3px ${ring(t.color)}`
                    }
                  }}
                >
                  <Avatar
                    sx={{
                      width: { xs: 22, md: 26 },
                      height: { xs: 22, md: 26 },
                      bgcolor: active ? 'rgba(255,255,255,0.22)' : soft(t.color),
                      color: active ? '#fff' : t.color
                    }}
                  >
                    <Icon size={13} />
                  </Avatar>
                  <Typography variant="caption" sx={{ fontWeight: 800, fontSize: { xs: 11.5, md: 13 }, lineHeight: 1 }}>
                    {t.label}
                  </Typography>
                  <Box
                    sx={{
                      minWidth: { xs: 22, md: 26 },
                      height: { xs: 18, md: 22 },
                      px: 0.625,
                      display: 'inline-flex',
                      alignItems: 'center',
                      justifyContent: 'center',
                      borderRadius: 999,
                      fontSize: { xs: 10, md: 11 },
                      fontWeight: 800,
                      bgcolor: active ? 'rgba(255,255,255,0.22)' : '#fff',
                      color: active ? '#fff' : t.color,
                      border: active ? 'none' : `1px solid ${edge(t.color)}`
                    }}
                  >
                    {count ?? 0}
                  </Box>
                </Box>
              );
            })}
          </Stack>
          
        </Stack>
      </Paper>

      {/* ============================================= || Table (dense, sticky header) || ============================================= */}
      <Paper
        elevation={0}
        sx={{
          borderTopLeftRadius: 0,
          borderTopRightRadius: 0,
          borderBottomLeftRadius: 2,
          borderBottomRightRadius: 2,
          border: '1px solid',
          borderColor: DT.borderSubtle,
          overflow: 'hidden',
          background: '#fff'
        }}
      >
        <TableContainer
          onScroll={handleScroll}
          ref={containerRef}
          sx={{
            overflowX: 'auto',
            overflowY: 'visible',
            '&::-webkit-scrollbar': { width: 10, height: 10 },
            '&::-webkit-scrollbar-thumb': {
              backgroundColor: edge(BRAND),
              borderRadius: 8,
              '&:hover': { backgroundColor: BRAND }
            },
            '&::-webkit-scrollbar-track': { backgroundColor: DT.surfaceAlt }
          }}
        >
          <Table stickyHeader size="small" sx={{ minWidth: { xs: 960, md: 1100 } }}>
            <TableHead>
              <TableRow
                sx={{
                  '& th': {
                    backgroundColor: DT.surfaceAlt,
                    color: DT.textSecondary,
                    fontSize: 10.5,
                    fontWeight: 800,
                    letterSpacing: 0.5,
                    textTransform: 'uppercase',
                    whiteSpace: 'nowrap',
                    borderBottom: `1px solid ${DT.borderSubtle}`,
                    py: 0.75,
                    px: 1
                  }
                }}
              >
                <TableCell>#</TableCell>
                <TableCell>Order Location</TableCell>
                <TableCell>Pickup</TableCell>
                <TableCell>Drop</TableCell>
                <TableCell align="center">Qty</TableCell>
                <TableCell align="right">COD</TableCell>
                <TableCell align="center">Kms</TableCell>
                <TableCell align="right">Charges</TableCell>
                <TableCell>Notes</TableCell>
                <TableCell>Status</TableCell>
                {currentStatus === 'created' && <TableCell align="right">Actions</TableCell>}
              </TableRow>
            </TableHead>

            <TableBody>
              {(isLoadingGetOrders || createloader) &&
                rows.length === 0 &&
                Array.from({ length: 10 }).map((_, idx) => (
                  <TableRow key={`sk-${idx}`}>
                    {Array.from({ length: currentStatus === 'created' ? 12 : 11 }).map((__, ci) => (
                      <TableCell key={ci} sx={{ borderBottom: `1px solid ${DT.divider}`, py: 0.625, px: 1 }}>
                        <Skeleton animation="wave" height={20} />
                      </TableCell>
                    ))}
                  </TableRow>
                ))}

              {!isLoadingGetOrders && rows.length === 0 && (
                <TableRow>
                  <TableCell colSpan={currentStatus === 'created' ? 12 : 11} sx={{ py: 7, borderBottom: 'none' }}>
                    <Stack alignItems="center" spacing={1.25}>
                      <Avatar
                        variant="rounded"
                        sx={{
                          width: 56,
                          height: 56,
                          bgcolor: soft('#94a3b8'),
                          color: DT.textMuted,
                          borderRadius: 2
                        }}
                      >
                        <MdLocalShipping size={26} />
                      </Avatar>
                      <Typography sx={{ fontWeight: 700, color: DT.textPrimary, fontSize: 14 }}>
                        No {currentStatus} orders
                      </Typography>
                      <Typography sx={{ color: DT.textSecondary, fontSize: 12 }}>
                        {searchword ? 'Try a different keyword or clear the search.' : 'Adjust the location, status, or date range above.'}
                      </Typography>
                      {searchword && (
                        <Button
                          size="small"
                          onClick={() => setSearchword('')}
                          sx={{
                            mt: 0.5,
                            height: 28,
                            textTransform: 'none',
                            fontSize: 12,
                            fontWeight: 700,
                            color: BRAND,
                            borderRadius: 1.25,
                            '&:hover': { bgcolor: tint(BRAND) }
                          }}
                          startIcon={<MdClear size={14} />}
                        >
                          Clear search
                        </Button>
                      )}
                    </Stack>
                  </TableCell>
                </TableRow>
              )}

              {rows.map((row, index) => {
                const isItemSelected = !!deliverylist.find((res) => res.orderheaderid === row.orderheaderid);
                const handleCheckbox = (e) => {
                  if (e.target.checked) {
                    setDeliverylist((prev) => [...prev, { ...row, sno: prev.length + 1 }]);
                  } else {
                    setDeliverylist((prev) =>
                      prev.filter((item) => item.orderheaderid !== row.orderheaderid).map((item, i) => ({ ...item, sno: i + 1 }))
                    );
                  }
                };

                return (
                  <TableRow
                    key={`${row.orderheaderid}-${index}`}
                    sx={{
                      cursor: 'pointer',
                      transition: 'background-color 0.12s, box-shadow 0.12s',
                      backgroundColor: 'transparent',
                      '& td': {
                        borderBottom: `1px solid ${DT.divider}`,
                        py: 0.5,
                        px: 1,
                        verticalAlign: 'top'
                      },
                      '&:hover': {
                        backgroundColor: DT.surfaceAlt,
                        boxShadow: `inset 3px 0 0 ${BRAND}`
                      }
                    }}
                  >
                    <TableCell>
                      <Typography sx={{ fontWeight: 700, color: DT.textSecondary }}>
                        {page * rowsPerPage + index + 1}
                      </Typography>
                    </TableCell>

                    <TableCell>
                      <Typography variant="subtitle2" sx={{ fontWeight: 700, color: DT.textPrimary }} noWrap>
                        {row.locationname}
                        {row.locationsuburb && ` - ${row.locationsuburb}`}
                      </Typography>
                      <Tooltip title="Order Id">
                        <Typography variant="caption" sx={{ color: DT.textSecondary }} noWrap>
                          {row.orderid}
                        </Typography>
                      </Tooltip>
                      <Stack direction="row" spacing={0.5} alignItems="center" sx={{ mt: 0.125 }}>
                        <MdAccessTime size={10} style={{ color: DT.textMuted, flexShrink: 0 }} />
                        {(() => {
                          const dateObj = row.pickupslot && dayjs(row.pickupslot).isValid()
                            ? dayjs(row.pickupslot)
                            : dayjs(row.deliverydate || row.orderdate);
                          return (
                            <>
                              <Typography sx={{ fontSize: 10.5, color: DT.textSecondary, fontWeight: 700 }} noWrap>
                                {dateObj.format('hh:mm A')}
                              </Typography>
                              <Typography sx={{ fontSize: 10.5, color: DT.textMuted, fontWeight: 600 }} noWrap>
                                · {dateObj.format('DD MMM YY')}
                              </Typography>
                            </>
                          );
                        })()}
                      </Stack>
                    </TableCell>

                    <TableCell>
                      <Stack direction="column">
                        <Typography variant="subtitle2" sx={{ fontWeight: 700, color: DT.textPrimary }} noWrap>
                          {row.pickupcustomer}
                        </Typography>
                        <Typography variant="caption" sx={{ color: DT.textSecondary }}>
                          {row.pickupcontactno}
                        </Typography>
                        <Tooltip title={row.pickupaddress}>
                          <Typography variant="caption" sx={{ color: DT.textMuted }} noWrap>
                            {row.pickupsuburb || (row.pickupaddress ? `${row.pickupaddress.slice(0, 20)}…` : '—')}
                          </Typography>
                        </Tooltip>
                      </Stack>
                    </TableCell>

                    <TableCell>
                      <Stack direction="column">
                        <Typography variant="subtitle2" sx={{ fontWeight: 700, color: DT.textPrimary }} noWrap>
                          {row.deliverycustomer}
                        </Typography>
                        <Typography variant="caption" sx={{ color: DT.textSecondary }}>
                          {row.deliverycontactno}
                        </Typography>
                        <Tooltip title={row.deliveryaddress}>
                          <Typography variant="caption" sx={{ color: DT.textMuted }} noWrap>
                            {row.deliverysuburb ||
                              (row.deliveryaddress?.length > 20 ? `${row.deliveryaddress.slice(0, 20)}…` : row.deliveryaddress || '—')}
                          </Typography>
                        </Tooltip>
                      </Stack>
                    </TableCell>

                    <TableCell align="center">
                      <MetricCell value={row.quantity} color="#0ea5e9" icon={<MdInventory2 size={11} />} />
                    </TableCell>

                    <TableCell align="right">
                      <MetricCell value={row.collectionamt} color="#10b981" icon={<MdCurrencyRupee size={11} />} isMoney />
                    </TableCell>

                    <TableCell align="center">
                      <MetricCell value={row.kms} color="#f59e0b" icon={<MdStraighten size={11} />} />
                    </TableCell>

                    <TableCell align="right">
                      <MetricCell value={row.deliverycharge} color={BRAND} icon={<MdCurrencyRupee size={11} />} isMoney />
                    </TableCell>

                    <TableCell>
                      {row.ordernotes ? (
                        <Stack direction="row" spacing={0.5} alignItems="center" sx={{ color: DT.textSecondary }}>
                          <MdNotes size={12} style={{ color: DT.textMuted, flexShrink: 0 }} />
                          <Typography
                            variant="caption"
                            sx={{
                              maxWidth: 140,
                              whiteSpace: 'nowrap',
                              overflow: 'hidden',
                              textOverflow: 'ellipsis',
                              fontWeight: 600
                            }}
                          >
                            {row.ordernotes}
                          </Typography>
                        </Stack>
                      ) : (
                        <Typography variant="caption" sx={{ color: DT.textMuted }}>
                          —
                        </Typography>
                      )}
                    </TableCell>

                    <TableCell>
                      <StatusBadge status={row.orderstatus} />
                    </TableCell>

                    {currentStatus === 'created' && (
                      <TableCell align="right">
                        {row.orderstatus === 'created' && (
                          <Tooltip title="Cancel Order">
                            <IconButton
                              size="small"
                              onClick={(e) => {
                                e.stopPropagation();
                                setOrderheaderid(row.orderheaderid);
                                setCancelOpen(true);
                              }}
                              sx={{
                                bgcolor: tint('#ef4444'),
                                border: `1px solid ${edge('#ef4444')}`,
                                color: '#ef4444',
                                borderRadius: 999,
                                p: 0.75,
                                '&:hover': {
                                  bgcolor: soft('#ef4444'),
                                  borderColor: '#ef4444'
                                }
                              }}
                            >
                              <MdClose size={14} />
                            </IconButton>
                          </Tooltip>
                        )}
                      </TableCell>
                    )}
                  </TableRow>
                );
              })}

              {rows.length !== 0 && (
                <TableRow sx={{ '&:hover': { backgroundColor: 'transparent !important' } }}>
                  <TableCell colSpan={currentStatus === 'created' ? 12 : 11} sx={{ borderBottom: 'none', py: 1, bgcolor: DT.surfaceAlt }}>
                    <Stack
                      ref={loadMoreRef}
                      direction="row"
                      alignItems="center"
                      justifyContent="center"
                      spacing={1}
                      sx={{ minHeight: 32 }}
                    >
                      {isFetchingNextPage || hasNextPage ? (
                        <>
                          <CircularProgress size={14} sx={{ color: BRAND }} />
                          <Typography sx={{ fontSize: 11.5, color: DT.textSecondary, fontWeight: 700 }}>
                            Loading more orders…
                          </Typography>
                        </>
                      ) : (
                        <Typography sx={{ fontSize: 11.5, color: DT.textMuted, fontWeight: 700, letterSpacing: 0.3 }}>
                          {rows.length} order{rows.length === 1 ? '' : 's'} · End of list
                        </Typography>
                      )}
                    </Stack>
                  </TableCell>
                </TableRow>
              )}
            </TableBody>
          </Table>
        </TableContainer>
      </Paper>

      {/* ============================================= || Cancel Order Dialog || ============================================= */}
      <Dialog open={cancelOpen} onClose={() => setCancelOpen(false)} maxWidth="xs" PaperProps={{ sx: { borderRadius: 3 } }}>
        <Box
          sx={{
            p: 2.5,
            background: `linear-gradient(135deg, ${tint('#ef4444')} 0%, ${tint('#f59e0b')} 100%)`,
            borderBottom: `1px solid ${DT.borderSubtle}`
          }}
        >
          <Stack direction="row" alignItems="center" spacing={1.5}>
            <Avatar sx={{ bgcolor: '#ef4444', color: '#fff', width: 40, height: 40 }}>
              <MdDeleteOutline size={20} />
            </Avatar>
            <Typography variant="h5" sx={{ fontWeight: 800, color: DT.textPrimary }}>
              Cancel Order
            </Typography>
          </Stack>
        </Box>
        <DialogContent sx={{ pt: 3 }}>
          <Stack alignItems="center" spacing={3}>
            <Typography variant="body1" align="center" sx={{ color: DT.textSecondary, fontWeight: 600 }}>
              Are you sure you want to cancel this order? This action cannot be undone.
            </Typography>
            <Stack direction="row" spacing={1.5} sx={{ width: 1 }}>
              <Button
                fullWidth
                onClick={() => setCancelOpen(false)}
                variant="outlined"
                sx={{
                  borderRadius: 999,
                  py: 1,
                  borderColor: DT.borderSubtle,
                  color: DT.textSecondary,
                  fontWeight: 700,
                  '&:hover': { borderColor: DT.textSecondary, bgcolor: DT.surfaceAlt }
                }}
              >
                No
              </Button>
              <Button
                fullWidth
                variant="contained"
                onClick={cancelorder}
                autoFocus
                sx={{
                  borderRadius: 999,
                  py: 1,
                  bgcolor: '#ef4444',
                  fontWeight: 700,
                  boxShadow: `0 6px 18px ${ring('#ef4444')}`,
                  '&:hover': { bgcolor: '#dc2626' }
                }}
              >
                Yes, Cancel
              </Button>
            </Stack>
          </Stack>
        </DialogContent>
      </Dialog>

      {/* ============================================= || Date Filter || ============================================= */}
      <DateFilterDialog
        open={dateOpen}
        onClose={() => setDateOpen(false)}
        onApply={({ startDate, endDate, label }) => {
          setStartdate(startDate);
          setEnddate(endDate);
          setDatestatus(label);
        }}
      />

      {/* ============================================= || Cancel Multiple Orders Dialog || ============================================= */}
      <Dialog open={multiDeleteDialog} onClose={() => setMultiDeleteDialog(false)} maxWidth="xs" PaperProps={{ sx: { borderRadius: 3 } }}>
        <Box
          sx={{
            p: 2.5,
            background: `linear-gradient(135deg, ${tint('#ef4444')} 0%, ${tint('#f59e0b')} 100%)`,
            borderBottom: `1px solid ${DT.borderSubtle}`
          }}
        >
          <Stack direction="row" alignItems="center" spacing={1.5}>
            <Avatar sx={{ bgcolor: '#ef4444', color: '#fff', width: 40, height: 40 }}>
              <MdDeleteOutline size={20} />
            </Avatar>
            <Typography variant="h5" sx={{ fontWeight: 800, color: DT.textPrimary }}>
              Cancel Selected Orders
            </Typography>
          </Stack>
        </Box>
        <DialogContent sx={{ pt: 3 }}>
          <Stack alignItems="center" spacing={3}>
            <Typography variant="body1" align="center" sx={{ color: DT.textSecondary, fontWeight: 600 }}>
              Are you sure you want to cancel the {deliverylist.length} selected orders? This action cannot be undone.
            </Typography>
            <Stack direction="row" spacing={1.5} sx={{ width: 1 }}>
              <Button
                fullWidth
                onClick={() => setMultiDeleteDialog(false)}
                variant="outlined"
                sx={{
                  borderRadius: 999,
                  py: 1,
                  borderColor: DT.borderSubtle,
                  color: DT.textSecondary,
                  fontWeight: 700,
                  '&:hover': { borderColor: DT.textSecondary, bgcolor: DT.surfaceAlt }
                }}
              >
                No
              </Button>
              <Button
                fullWidth
                variant="contained"
                onClick={() => cancelMultipleOrderMutation.mutate(deliverylist)}
                autoFocus
                sx={{
                  borderRadius: 999,
                  py: 1,
                  bgcolor: '#ef4444',
                  fontWeight: 700,
                  boxShadow: `0 6px 18px ${ring('#ef4444')}`,
                  '&:hover': { bgcolor: '#dc2626' }
                }}
              >
                Yes, Cancel
              </Button>
            </Stack>
          </Stack>
        </DialogContent>
      </Dialog>

    </Fragment>
  );
};

export default Orders;