"use client";
import React, { useCallback, useEffect, useState } from "react";
import {
  Box,
  Button,
  Card,
  CardContent,
  CardActions,
  Stack,
  Typography,
  Chip,
  CircularProgress,
  TablePagination,
  Grid,
} from "@mui/material";
import { useTranslation } from "react-i18next";
import QcStockInModal from "../Qc/QcStockInModal";
import { useSession } from "next-auth/react";
import { SessionWithTokens } from "@/config/authConfig";
import dayjs from "dayjs";
import { OUTPUT_DATE_FORMAT } from "@/app/utils/formatUtil";
import {
  fetchAllJoborderProductProcessInfo,
  AllJoborderProductProcessInfoResponse,
  updateJo,
  fetchProductProcessesByJobOrderId,
  completeProductProcessLine,
  assignJobOrderPickOrder
} from "@/app/api/jo/actions";
import { StockInLineInput } from "@/app/api/stockIn";
import { PrinterCombo } from "@/app/api/settings/printer";
import JobPickExecutionsecondscan from "../Jodetail/JobPickExecutionsecondscan";
interface ProductProcessListProps {
  onSelectProcess: (jobOrderId: number|undefined, productProcessId: number|undefined) => void;
  onSelectMatchingStock: (jobOrderId: number|undefined, productProcessId: number|undefined) => void;
  printerCombo: PrinterCombo[];
}


const PER_PAGE = 6;

const ProductProcessList: React.FC<ProductProcessListProps> = ({ onSelectProcess, printerCombo ,onSelectMatchingStock}) => {
  const { t } = useTranslation( ["common", "production","purchaseOrder"]);
  const { data: session } = useSession() as { data: SessionWithTokens | null };
  const sessionToken = session as SessionWithTokens | null;
  const [loading, setLoading] = useState(false);
  const [processes, setProcesses] = useState<AllJoborderProductProcessInfoResponse[]>([]);
  const [page, setPage] = useState(0);
  const [openModal, setOpenModal] = useState<boolean>(false);
  const [modalInfo, setModalInfo] = useState<StockInLineInput>();
  const currentUserId = session?.id ? parseInt(session.id) : undefined; 
  
  const handleAssignPickOrder = useCallback(async (pickOrderId: number, jobOrderId?: number, productProcessId?: number) => {
    if (!currentUserId) {
      alert(t("Unable to get user ID"));
      return;
    }

    try {
      console.log("🔄 Assigning pick order:", pickOrderId, "to user:", currentUserId);
      
      // 调用分配 API 并读取响应
      const assignResult = await assignJobOrderPickOrder(pickOrderId, currentUserId);
      
      console.log("📦 Assign result:", assignResult);
      
      // 检查分配是否成功
      if (assignResult.message === "Successfully assigned") {
        console.log("✅ Successfully assigned pick order");
        console.log("✅ Pick order ID:", assignResult.id);
        console.log("✅ Pick order code:", assignResult.code);
        
        // 分配成功后，导航到 second scan 页面
        if (onSelectMatchingStock && jobOrderId) {
          onSelectMatchingStock(jobOrderId, productProcessId);
        } else {
          alert(t("Assignment successful"));
        }
      } else {
        // 分配失败
        console.error("Assignment failed:", assignResult.message);
        alert(t(`Assignment failed: ${assignResult.message || "Unknown error"}`));
      }
    } catch (error: any) {
      console.error(" Error assigning pick order:", error);
      alert(t(`Unknown error: ${error?.message || "Unknown error"}。Please try again later.`));
    }
  }, [currentUserId, t, onSelectMatchingStock]);
  const handleViewStockIn = useCallback((process: AllJoborderProductProcessInfoResponse) => {
    if (!process.stockInLineId) {
      alert(t("Invalid Stock In Line Id"));
      return;
    }

    setModalInfo({
      id: process.stockInLineId,
      //expiryDate: dayjs().add(1, "month").format(OUTPUT_DATE_FORMAT),
      
      // 视需要补 itemId、jobOrderId 等
    });
    setOpenModal(true);
  }, [t]);

  const fetchProcesses = useCallback(async () => {
    setLoading(true);
    try {
      const data = await fetchAllJoborderProductProcessInfo();
      setProcesses(data || []);
      setPage(0);
    } catch (e) {
      console.error(e);
      setProcesses([]);
    } finally {
      setLoading(false);
    }
  }, []);

  useEffect(() => {
    fetchProcesses();
  }, [fetchProcesses]);
  const handleUpdateJo = useCallback(async (process: AllJoborderProductProcessInfoResponse) => {
    if (!process.jobOrderId) {
      alert(t("Invalid Job Order Id"));
      return;
    }
    try {
      setLoading(true); // 可选：已有 loading state 可复用
      // 1) 拉取该 JO 的所有 process，取出全部 lineId
      const processes = await fetchProductProcessesByJobOrderId(process.jobOrderId);
      const lineIds = (processes ?? [])
        .flatMap(p => (p as any).productProcessLines ?? [])
        .map(l => l.id)
        .filter(Boolean);
  
      // 2) 逐个调用 completeProductProcessLine
      for (const lineId of lineIds) {
        try {
          await completeProductProcessLine(lineId);
        } catch (e) {
          console.error("completeProductProcessLine failed for lineId:", lineId, e);
        }
      }
  
      // 3) 更新 JO 状态
      await updateJo({ id: process.jobOrderId, status: "completed" });
  
      // 4) 刷新列表
      await fetchProcesses();
    } catch (e) {
      console.error(e);
      alert(t("An error has occurred. Please try again later."));
    } finally {
      setLoading(false);
    }
  }, [t, fetchProcesses]);
  const closeNewModal = useCallback(() => {
    // const response = updateJo({ id: 1, status: "storing" });
    setOpenModal(false); // Close the modal first
    fetchProcesses();
    // setTimeout(() => {
    //   }, 300); // Add a delay to avoid immediate re-trigger of useEffect
}, [fetchProcesses]);

  const startIdx = page * PER_PAGE;
  const paged = processes.slice(startIdx, startIdx + PER_PAGE);

  return (
    <Box>
      {loading ? (
        <Box sx={{ display: "flex", justifyContent: "center", p: 3 }}>
          <CircularProgress />
        </Box>
      ) : (
        <Box>
          <Typography variant="body2" color="text.secondary" sx={{ mb: 2 }}>
            {t("Total processes")}: {processes.length}
          </Typography>

          <Grid container spacing={2}>
            {paged.map((process) => {
              const status = String(process.status || "");
              const statusLower = status.toLowerCase();
              const statusColor =
                statusLower === "completed"
                  ? "success"
                  : statusLower === "in_progress" || statusLower === "processing"
                  ? "primary"
                  : "default";

                  const finishedCount =
                  (process.lines || []).filter(
                    (l) => String(l.status ?? "").trim().toLowerCase() === "completed"
                  ).length;

              const totalCount = process.productProcessLineCount ?? process.lines?.length ?? 0;
              const linesWithStatus = (process.lines || []).filter(
                (l) => String(l.status ?? "").trim() !== ""
              );

              const dateDisplay = process.date
                ? dayjs(process.date as any).format(OUTPUT_DATE_FORMAT)
                : "-";
              const jobOrderCode =
                (process as any).jobOrderCode ??
                (process.jobOrderId ? `JO-${process.jobOrderId}` : "N/A");
                const inProgressLines = (process.lines || [])
                .filter(l => String(l.status ?? "").trim() !== "")
                .filter(l => String(l.status).toLowerCase() === "in_progress");

              return (
                <Grid key={process.id} item xs={12} sm={6} md={4}>
                  <Card
                    sx={{
                      minHeight: 160,
                      maxHeight: 300,            
                      display: "flex",
                      flexDirection: "column",
                      border: "1px solid",
                      borderColor: "success.main",
                    }}
                  >
                    <CardContent
                      sx={{
                        pb: 1,
                        flexGrow: 1,            // let content take remaining height
                        overflow: "auto",       // allow scroll when content exceeds
                      }}
                    >
                      <Stack direction="row" justifyContent="space-between" alignItems="center">
                        <Box sx={{ minWidth: 0 }}>
                          <Typography variant="subtitle1">
                          {t("Job Order")}: {jobOrderCode}
                          </Typography>
                    
                        </Box>
                        <Chip size="small" label={t(status)} color={statusColor as any} />
                      </Stack>

                      <Typography variant="body2" color="text.secondary">
                        {t("Item Name")}: {process.itemCode} {process.itemName}
                      </Typography>
                      <Typography variant="body2" color="text.secondary">
                        {t("Production Priority")}: {process.productionPriority}
                      </Typography>
                      <Typography variant="body2" color="text.secondary">
                        {t("Required Qty")}: {process.requiredQty} ({process.uom})
                      </Typography>
                      <Typography variant="body2" color="text.secondary">
                        {t("Production date")}: {process.date ? dayjs(process.date as any).format(OUTPUT_DATE_FORMAT) : "-"}
                      </Typography>
                      <Typography variant="body2" color="text.secondary">
                        {t("Assume Time Need")}: {process.timeNeedToComplete} {t("minutes")}
                      </Typography>
                      {statusLower !== "pending" && linesWithStatus.length > 0 && (
                        <Box sx={{ mt: 1 }}>
                          <Typography variant="body2" fontWeight={600}>
                            {t("Finished lines")}: {finishedCount} / {totalCount}
                          </Typography>

                          {inProgressLines.length > 0 && (
                            <Box sx={{ mt: 1 }}>
                              {inProgressLines.map(line => (
                                <Typography key={line.id} variant="caption" color="text.secondary" display="block">
                                  {t("Operator")}: {line.operatorName || "-"} <br />
                                  {t("Equipment")}: {line.equipmentName || "-"}
                                </Typography>
                              ))}
                            </Box>
                          )}
                        </Box>
                      )}
                      {statusLower == "pending" && (
                        <Box sx={{ mt: 1 }}>
                           <Typography variant="body2" fontWeight={600} color= "white">
                            {t("t")}
                          </Typography>
                          <Box sx={{ mt: 1 }}>
                          <Typography variant="caption" color="text.secondary" display="block">
                                  {""}
                           </Typography>
                            </Box>
                        </Box>
                      )}
        
                    </CardContent>

                    <CardActions sx={{ pt: 0.5 }}>
                      <Button variant="contained" size="small" onClick={() => onSelectProcess(process.jobOrderId, process.id)}>
                        {t("View Details")}
                      </Button>
                      <Button 
                      variant="contained" 
                      size="small" 
                      disabled={process.assignedTo != null || process.matchStatus == "completed"|| process.pickOrderStatus != "completed"} 
                      onClick={() => handleAssignPickOrder(process.pickOrderId, process.jobOrderId, process.id)}
                    >
                      {t("Matching Stock")}
                    </Button>
                      {statusLower !== "completed" && (
                      <Button variant="contained" size="small" onClick={() => handleUpdateJo(process)}>
                        {t("Update Job Order")}
                      </Button>
                      )}
                      {statusLower === "completed" && (
                        <Button onClick={() => handleViewStockIn(process)}>
                          {t("view stockin")}
                        </Button>
                      )}
                      <Box sx={{ flex: 1 }} />
                     
                    </CardActions>
                  </Card>
                </Grid>
              );
            })}
          </Grid>
          <QcStockInModal
          session={sessionToken}
          open={openModal}
          onClose={closeNewModal}
          inputDetail={modalInfo}
          printerCombo={printerCombo}
          printSource="productionProcess"
        />
          {processes.length > 0 && (
            <TablePagination
              component="div"
              count={processes.length}
              page={page}
              rowsPerPage={PER_PAGE}
              onPageChange={(e, p) => setPage(p)}
              rowsPerPageOptions={[PER_PAGE]}
            />
          )}
        </Box>
      )}
    </Box>
    
  );
};

export default ProductProcessList;