"use client";

import {
  fetchPoWithStockInLines,
  PoResult,
  PurchaseOrderLine,
  StockInLine,
} from "@/app/api/po";
import {
  Box,
  Button,
  ButtonProps,
  Collapse,
  Grid,
  IconButton,
  Paper,
  Stack,
  Tab,
  Table,
  TableBody,
  TableCell,
  TableContainer,
  TableHead,
  TableRow,
  Tabs,
  TabsProps,
  TextField,
  Typography,
  Checkbox,
  FormControlLabel,
} from "@mui/material";
import { useTranslation } from "react-i18next";
// import InputDataGrid, { TableRow } from "../InputDataGrid/InputDataGrid";
import {
  GridColDef,
  GridRowId,
  GridRowModel,
  useGridApiRef,
} from "@mui/x-data-grid";
import {
  checkPolAndCompletePo,
  fetchPoInClient,
  fetchStockInLineInfo,
  PurchaseQcResult,
  startPo,
} from "@/app/api/po/actions";
import {
  useCallback,
  useContext,
  useEffect,
  useMemo,
  useState,
} from "react";
import KeyboardArrowDownIcon from "@mui/icons-material/KeyboardArrowDown";
import KeyboardArrowUpIcon from "@mui/icons-material/KeyboardArrowUp";
import PoInputGrid from "./PoInputGrid";
import { QcItemWithChecks } from "@/app/api/qc";
import { useRouter, useSearchParams, usePathname } from "next/navigation";
import { WarehouseResult } from "@/app/api/warehouse";
import { calculateWeight, returnWeightUnit } from "@/app/utils/formatUtil";
import { CameraContext } from "../Cameras/CameraProvider";
import PoQcStockInModal from "./PoQcStockInModal";
import QrModal from "./QrModal";
import { PlayArrow } from "@mui/icons-material";
import DoneIcon from "@mui/icons-material/Done";
import { getCustomWidth } from "@/app/utils/commonUtil";
import PoInfoCard from "./PoInfoCard";
import { decimalFormatter, integerFormatter } from "@/app/utils/formatUtil";
import { fetchPoListClient } from "@/app/api/po/actions";
import { List, ListItem, ListItemButton, ListItemText, Divider } from "@mui/material";
import { createStockInLine } from "@/app/api/dashboard/actions";
//import { useRouter } from "next/navigation";



type Props = {
  po: PoResult;
  qc: QcItemWithChecks[];
  warehouse: WarehouseResult[];
};

type EntryError =
  | {
    [field in keyof StockInLine]?: string;
  }
  | undefined;
// type PolRow = TableRow<Partial<StockInLine>, EntryError>;
const PoSearchList: React.FC<{
  poList: PoResult[];
  selectedPoId: number;
  onSelect: (po: PoResult) => void;
}> = ({ poList, selectedPoId, onSelect }) => {
  const { t } = useTranslation("purchaseOrder");
  const [searchTerm, setSearchTerm] = useState('');

  const filteredPoList = useMemo(() => {
    if (searchTerm.trim() === '') {
      return poList;
    }
    return poList.filter(poItem => 
      poItem.code.toLowerCase().includes(searchTerm.toLowerCase()) ||
      poItem.supplier?.toLowerCase().includes(searchTerm.toLowerCase()) ||
      t(`${poItem.status.toLowerCase()}`).toLowerCase().includes(searchTerm.toLowerCase())
    );
  }, [poList, searchTerm, t]);

  return (
    <Paper sx={{ p: 2, maxHeight: "400px", overflow: "auto", minWidth: "300px" }}>
      <Typography variant="h6" gutterBottom>
        {t("Purchase Orders")}
      </Typography>
      <TextField
        label={t("Search")}
        variant="outlined"
        size="small"
        fullWidth
        value={searchTerm}
        onChange={(e) => setSearchTerm(e.target.value)}
        sx={{ mb: 2 }}
        InputProps={{
          startAdornment: (
            <Typography variant="body2" color="text.secondary" sx={{ mr: 1 }}>
              
            </Typography>
          ),
        }}
      />
      <List dense sx={{ width: '100%' }}>
        {filteredPoList.map((poItem, index) => (
          <div key={poItem.id}>
            <ListItem disablePadding sx={{ width: '100%' }}>
              <ListItemButton
                selected={selectedPoId === poItem.id}
                onClick={() => onSelect(poItem)}
                sx={{
                  width: '100%',
                  "&.Mui-selected": {
                    backgroundColor: "primary.light",
                    "&:hover": {
                      backgroundColor: "primary.light",
                    },
                  },
                }}
              >
                <ListItemText
                  primary={
                    <Typography variant="body2" sx={{ wordBreak: 'break-all' }}>
                      {poItem.code}
                    </Typography>
                  }
                  secondary={
                    <Typography variant="caption" color="text.secondary">
                      {t(`${poItem.status.toLowerCase()}`)}
                    </Typography>
                  }
                />
              </ListItemButton>
            </ListItem>
            {index < filteredPoList.length - 1 && <Divider />}
          </div>
        ))}
      </List>
      {searchTerm && (
        <Typography variant="caption" color="text.secondary" sx={{ mt: 1, display: "block" }}>
          {t("Found")} {filteredPoList.length} {t("of")} {poList.length} {t("items")}
        </Typography>
      )}
    </Paper>
  );
};

const PoDetail: React.FC<Props> = ({ po, qc, warehouse }) => {
  const cameras = useContext(CameraContext);
  console.log(cameras);
  const { t } = useTranslation("purchaseOrder");
  const apiRef = useGridApiRef();
  const [purchaseOrder, setPurchaseOrder] = useState({ ...po });
  const [rows, setRows] = useState<PurchaseOrderLine[]>(
    purchaseOrder.pol || [],
  );
  const pathname = usePathname()
  const searchParams = useSearchParams();
  
  const [row, setRow] = useState<PurchaseOrderLine>({});
  const [stockInLine, setStockInLine] = useState<StockInLine[]>([]);
  const [processedQty, setProcessedQty] = useState(0);

  const router = useRouter();
  const [poList, setPoList] = useState<PoResult[]>([]);
  const [selectedPoId, setSelectedPoId] = useState(po.id);
  const currentPoId = searchParams.get('id');
  const selectedIdsParam = searchParams.get('selectedIds');


  const fetchPoList = useCallback(async () => {
    try {
      if (selectedIdsParam) {

        const selectedIds = selectedIdsParam.split(',').map(id => parseInt(id));
        const promises = selectedIds.map(id => fetchPoInClient(id));
        const results = await Promise.all(promises);
        setPoList(results.filter(Boolean));
      } else {

        const result = await fetchPoListClient({ limit: 20, offset: 0 });
        if (result && result.records) {
          setPoList(result.records);
        }
      }
    } catch (error) {
      console.error("Failed to fetch PO list:", error);
    }
  }, [selectedIdsParam]);

  const handlePoSelect = useCallback(
    (selectedPo: PoResult) => {
      setSelectedPoId(selectedPo.id);

      const newSelectedIds = selectedIdsParam || selectedPo.id.toString();
      router.push(`/po/edit?id=${selectedPo.id}&start=true&selectedIds=${newSelectedIds}`, { scroll: false });
    },
    [router, selectedIdsParam]
  );

   const fetchPoDetail = useCallback(async (poId: string) => {
    try {
      const result = await fetchPoInClient(parseInt(poId));
      if (result) {
        setPurchaseOrder(result);
        setRows(result.pol || []);
        if (result.pol && result.pol.length > 0) {
          setRow(result.pol[0]);
          setStockInLine(result.pol[0].stockInLine);
          setProcessedQty(result.pol[0].processed);
        }
      }
    } catch (error) {
      console.error("Failed to fetch PO detail:", error);
    }
  }, []);

  
  useEffect(() => {
    if (currentPoId && currentPoId !== selectedPoId.toString()) {
      setSelectedPoId(parseInt(currentPoId));
      fetchPoDetail(currentPoId);
    }
  }, [currentPoId, selectedPoId, fetchPoDetail]);

  useEffect(() => {
    fetchPoList();
  }, [fetchPoList]);

  useEffect(() => {
    if (currentPoId) {
      setSelectedPoId(parseInt(currentPoId));
    }
  }, [currentPoId]);
  







  const removeParam = (paramToRemove: string) => {
    const newParams = new URLSearchParams(searchParams.toString());
    newParams.delete(paramToRemove);
    window.history.replaceState({}, '', `${window.location.pathname}?${newParams}`);
  };

  const handleCompletePo = useCallback(async () => {
    const checkRes = await checkPolAndCompletePo(purchaseOrder.id);
    console.log(checkRes);
    const newPo = await fetchPoInClient(purchaseOrder.id);
    setPurchaseOrder(newPo);
  }, [purchaseOrder.id]);

  const handleStartPo = useCallback(async () => {
    const startRes = await startPo(purchaseOrder.id);
    console.log(startRes);
    const newPo = await fetchPoInClient(purchaseOrder.id);
    setPurchaseOrder(newPo);
  }, [purchaseOrder.id]);

  useEffect(() => {
    setRows(purchaseOrder.pol || []);
  }, [purchaseOrder]);

  // useEffect(() => {
  //   setStockInLine([])
  // }, []);

  function Row(props: { row: PurchaseOrderLine }) {
    const { row } = props;
    // const [firstReceiveQty, setFirstReceiveQty] = useState<number>()
    const [secondReceiveQty, setSecondReceiveQty] = useState<number>()
    // const [open, setOpen] = useState(false);
    const [processedQty, setProcessedQty] = useState(row.processed);
    const [currStatus, setCurrStatus] = useState(row.status);
    // const [stockInLine, setStockInLine] = useState(row.stockInLine);
    const totalWeight = useMemo(
      () => calculateWeight(row.qty, row.uom),
      [row.qty, row.uom],
    );
    const weightUnit = useMemo(
      () => returnWeightUnit(row.uom),
      [row.uom],
    );

    useEffect(() => {
      const polId = searchParams.get("polId") != null ? parseInt(searchParams.get("polId")!) : null
      if (polId) {
        setStockInLine(rows.find((r) => r.id == polId)!.stockInLine)
      }
    }, []);

    useEffect(() => {
      if (processedQty === row.qty) {
        setCurrStatus("completed".toUpperCase());
      } else if (processedQty > 0) {
        setCurrStatus("receiving".toUpperCase());
      } else {
        setCurrStatus("pending".toUpperCase());
      }
    }, [processedQty, row.qty]);

    const changeStockInLines = useCallback(
        (id: number) => {
          console.log(id)
          //rows = purchaseOrderLine
          console.log(rows)
          const target = rows.find((r) => r.id === id)
          const stockInLine = target!.stockInLine
          console.log(stockInLine)
          setStockInLine(stockInLine)
          setRow(target!)
          // console.log(pathname)
          // router.replace(`/po/edit?id=${item.poId}&polId=${item.polId}&stockInLineId=${item.stockInLineId}`);
        },
        [rows]
      );

    const handleStart = useCallback(
      () => {
        setTimeout(async () => {
          // post stock in line
          const oldId = row.id;
          const postData = {
            itemId: row.itemId,
            itemNo: row.itemNo,
            itemName: row.itemName,
            purchaseOrderId: row.purchaseOrderId,
            purchaseOrderLineId: row.id,
            acceptedQty: secondReceiveQty || 0,
            // acceptedQty: row.acceptedQty,
          };
          if (secondReceiveQty === 0) return
          const res = await createStockInLine(postData);
          console.log(res);
        }, 200);
      },
      [],
    );

    const handleChange = (e: React.ChangeEvent<HTMLInputElement>) => {
  const raw = e.target.value;

  // Allow empty input
  if (raw.trim() === '') {
    setSecondReceiveQty(undefined);
    return;
  }

  // Keep digits only
  const cleaned = raw.replace(/[^\d]/g, '');
  if (cleaned === '') {
    // If the user typed only non-digits, keep previous value
    return;
  }

  // Parse and clamp to non-negative integer
  const next = Math.max(0, Math.floor(Number(cleaned)));
  setSecondReceiveQty(next);
};
    return (
      <>
        <TableRow 
          sx={{ "& > *": { borderBottom: "unset" }, 
          color: "black" 
          }}
          onClick={() => changeStockInLines(row.id)}
          >
          {/* <TableCell>
            <IconButton
              disabled={purchaseOrder.status.toLowerCase() === "pending"}
              aria-label="expand row"
              size="small"
              onClick={() => setOpen(!open)}
            >
              {open ? <KeyboardArrowUpIcon /> : <KeyboardArrowDownIcon />}
            </IconButton>
          </TableCell> */}
          <TableCell align="left">{row.itemNo}</TableCell>
          <TableCell align="left">{row.itemName}</TableCell>
          <TableCell align="right">{integerFormatter.format(row.qty)}</TableCell>
          <TableCell align="right">{integerFormatter.format(processedQty)}</TableCell>
          <TableCell align="left">{row.uom?.code}</TableCell>
          {/* <TableCell align="right">
            {decimalFormatter.format(totalWeight)} {weightUnit}
          </TableCell> */}
          {/* <TableCell align="left">{weightUnit}</TableCell> */}
          <TableCell align="right">{decimalFormatter.format(row.price)}</TableCell>
          {/* <TableCell align="left">{row.expiryDate}</TableCell> */}
          <TableCell align="left">{t(`${currStatus.toLowerCase()}`)}</TableCell>
          <TableCell align="right">{integerFormatter.format(row.receivedQty)}</TableCell>
          <TableCell align="center">
            <TextField
              label="輸入來貨數量"
              type="text" // Use type="text" to allow validation in the change handler
              variant="outlined"
              value={secondReceiveQty}
              onChange={handleChange}
              InputProps={{
                inputProps: {
                  min: 0, // Optional: set a minimum value
                  step: 1  // Optional: set the step for the number input
                }
              }}
            />
          </TableCell>
          <TableCell align="center">
            <Button 
              variant="contained"
              onClick={() => 
                handleStart()
              }
              >
              提交
            </Button>
          </TableCell>
        </TableRow>
        {/* <TableRow> */}
          {/* <TableCell /> */}
          {/* <TableCell style={{ paddingBottom: 0, paddingTop: 0 }} colSpan={12}> */}
            {/* <Collapse in={true} timeout="auto" unmountOnExit> */}
              {/* <Collapse in={open} timeout="auto" unmountOnExit> */}
              {/* <Table>
                <TableBody>
                  <TableRow>
                    <TableCell align="right">
                      <Box>
                        <PoInputGrid
                          qc={qc}
                          setRows={setRows}
                          stockInLine={stockInLine}
                          setStockInLine={setStockInLine}
                          setProcessedQty={setProcessedQty}
                          itemDetail={row}
                          warehouse={warehouse}
                        />
                      </Box>
                    </TableCell>
                  </TableRow>
                </TableBody>
              </Table> */}
            {/* </Collapse> */}
          {/* </TableCell> */}
        {/* </TableRow> */}
      </>
    );
  }
  const [tabIndex, setTabIndex] = useState(0);
  const handleTabChange = useCallback<NonNullable<TabsProps["onChange"]>>(
    (_e, newValue) => {
      setTabIndex(newValue);
    },
    [],
  );

  const [isOpenScanner, setOpenScanner] = useState(false);
  // const testing = useCallback(() => {
  //   // setOpenScanner(true);
  //   const newParams = new URLSearchParams(searchParams.toString());
  //   console.log(pathname)
  // }, [pathname, router, searchParams]);

  const onOpenScanner = useCallback(() => {
    setOpenScanner(true);
  }, []);

  const onCloseScanner = useCallback(() => {
    setOpenScanner(false);
  }, []);

  const [itemInfo, setItemInfo] = useState<
    StockInLine & { warehouseId?: number }
  >();
  const [putAwayOpen, setPutAwayOpen] = useState(false);
  // const [scannedInfo, setScannedInfo] = useState<QrCodeInfo>({} as QrCodeInfo);

  const closePutAwayModal = useCallback(() => {
    setPutAwayOpen(false);
    setItemInfo(undefined);
  }, []);
  const openPutAwayModal = useCallback(() => {
    setPutAwayOpen(true);
  }, []);

  const buttonData = useMemo(() => {
    switch (purchaseOrder.status.toLowerCase()) {
      case "pending":
        return {
          buttonName: "start",
          title: t("Do you want to start?"),
          confirmButtonText: t("Start"),
          successTitle: t("Start Success"),
          errorTitle: t("Start Fail"),
          buttonText: t("Start PO"),
          buttonIcon: <PlayArrow />,
          buttonColor: "success",
          disabled: false,
          onClick: handleStartPo,
        };
      case "receiving":
        return {
          buttonName: "complete",
          title: t("Do you want to complete?"),
          confirmButtonText: t("Complete"),
          successTitle: t("Complete Success"),
          errorTitle: t("Complete Fail"),
          buttonText: t("Complete PO"),
          buttonIcon: <DoneIcon />,
          buttonColor: "info",
          disabled: false,
          onClick: handleCompletePo,
        };
      default:
        return {
          buttonName: "complete",
          title: t("Do you want to complete?"),
          confirmButtonText: t("Complete"),
          successTitle: t("Complete Success"),
          errorTitle: t("Complete Fail"),
          buttonText: t("Complete PO"),
          buttonIcon: <DoneIcon />,
          buttonColor: "info",
          disabled: true,
        };
      // break;
    }
  }, [purchaseOrder.status, t, handleStartPo, handleCompletePo]);

  const FIRST_IN_FIELD = "firstInQty"
  const SECOND_IN_FIELD = "secondInQty"

  const renderFieldCondition = useCallback((field: "firstInQty" | "secondInQty"): boolean => {
    switch (field) {
      case FIRST_IN_FIELD:
        return true;
      case SECOND_IN_FIELD:
        return true;
      default:
        return false; // Default case
    }
  }, []);

  useEffect(() => {
    const params = searchParams.get("polId")
    if (params) {
      const polId = parseInt(params)

    }
  }, [searchParams])

  return (
    <>
      <Stack spacing={2}>
        {/* Area1: title */}
        <Grid container xs={12} justifyContent="start">
          <Grid item>
            <Typography mb={2} variant="h4">
              {purchaseOrder.code} -{" "}
              {t(`${purchaseOrder.status.toLowerCase()}`)}
            </Typography>
          </Grid>
        </Grid>

        {/* area2: dn info */}
        <Grid container spacing={3} sx={{ maxWidth: 'fit-content' }}>
          {/* left side select po */}
          <Grid item xs={4}>
            <PoSearchList
              poList={poList}
              selectedPoId={selectedPoId}
              onSelect={handlePoSelect}
            />
          </Grid>

          {/* right side po info */}
          <Grid item xs={8}>
            <PoInfoCard po={purchaseOrder} />
            {true ? (
              <Stack spacing={2}>
                <TextField
                  label={t("dnNo")}
                  type="text"
                  variant="outlined"
                  fullWidth
                  // InputProps={{
                  //   inputProps: {
                  //     min: 0,
                  //     step: 1
                  //   }
                  // }}
                />
                <TextField
                  label={t("dnDate")}
                  type="text"
                  variant="outlined"
                  defaultValue={"11/08/2025"}
                  fullWidth
                  InputProps={{
                    inputProps: {
                      min: 0,
                      step: 1
                    }
                  }}
                />
                <Button variant="contained" onClick={onOpenScanner} fullWidth>
                  提交
                </Button>
              </Stack>
            ) : undefined}
          </Grid>
        </Grid>



        {/* Area4: Main Table */}
        <Grid container xs={12} justifyContent="start">
          <Grid item xs={12}>
            <TableContainer component={Paper} sx={{ width: 'fit-content', overflow: 'auto' }}>
              <Table aria-label="collapsible table" stickyHeader>
                <TableHead>
                  <TableRow>
                    <TableCell sx={{ width: '125px' }}>{t("itemNo")}</TableCell>
                    <TableCell align="left" sx={{ width: '125px' }}>{t("itemName")}</TableCell>
                    <TableCell align="right">{t("qty")}</TableCell>
                    <TableCell align="right">{t("processed")}</TableCell>
                    <TableCell align="left">{t("uom")}</TableCell>
                    {/* <TableCell align="right">{t("total weight")}</TableCell> */}
                    <TableCell align="right">{`${t("price")} (HKD)`}</TableCell>
                    <TableCell align="left" sx={{ width: '75px' }}>{t("status")}</TableCell>
                    {renderFieldCondition(FIRST_IN_FIELD) ? <TableCell align="right">{t("receivedQty")}</TableCell> : undefined}
                    {renderFieldCondition(SECOND_IN_FIELD) ? <TableCell align="center" sx={{ width: '150px' }}>{t("dnQty")}(以訂單單位計算)</TableCell> : undefined}
                    <TableCell align="center" sx={{ width: '100px' }}></TableCell>
                  </TableRow>
                </TableHead>
                <TableBody>
                  {rows.map((row) => (
                    <Row key={row.id} row={row} />
                  ))}
                </TableBody>
              </Table>
            </TableContainer>
          </Grid>
        </Grid>

        {/* area5: selected item info */}
        <Grid container xs={12} justifyContent="start">
          <Grid item xs={12}>
            <Typography variant="h6">{row.itemNo && row.itemName ? `已選擇: ${row.itemNo}-${row.itemName}` : `未選擇貨品`}</Typography>
          </Grid>
          <Grid item xs={12}>
            <TableContainer component={Paper} sx={{ width: 'fit-content', overflow: 'auto' }}>
              <Table>
                <TableBody>
                  <TableRow>
                    <TableCell align="right">
                      <Box>
                        <PoInputGrid
                          qc={qc}
                          setRows={setRows}
                          stockInLine={stockInLine}
                          setStockInLine={setStockInLine}
                          setProcessedQty={setProcessedQty}
                          itemDetail={row}
                          warehouse={warehouse}
                        />
                      </Box>
                    </TableCell>
                  </TableRow>
                </TableBody>
              </Table>
            </TableContainer>
          </Grid>
        </Grid>
        {/* tab 2 */}
        <Grid sx={{ display: tabIndex === 1 ? "block" : "none" }}>
          {/* <StyledDataGrid
          
          /> */}
        </Grid>
      </Stack>
      {itemInfo !== undefined && (
        <>
          <PoQcStockInModal
            type={"putaway"}
            open={putAwayOpen}
            warehouse={warehouse}
            setItemDetail={setItemInfo}
            onClose={closePutAwayModal}
            itemDetail={itemInfo}
          />
        </>
      )}
    </>
  );
};
export default PoDetail;