"use client";

import React, { useState, useEffect, useCallback, useMemo } from "react";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/components/ui/table";
import {
  Dialog, DialogContent, DialogHeader, DialogTitle, DialogFooter, DialogDescription,
} from "@/components/ui/dialog";
import { Label } from "@/components/ui/label";
import { Checkbox } from "@/components/ui/checkbox";
import {
  Plus, Trash2, Save, Loader2, FileSpreadsheet, Download,
  ClipboardList, Pencil, Search, X, Truck, Package,
  ChevronLeft, ChevronRight, ChevronsLeft, ChevronsRight,
  Settings2, RotateCcw, Filter, Check, ArrowUp, ArrowDown,
} from "lucide-react";
import { Popover, PopoverContent, PopoverTrigger } from "@/components/ui/popover";
import { cn } from "@/lib/utils";
import { apiClient } from "@/lib/api/client";
import { useConfirmDialog } from "@/components/common/ConfirmDialog";
import { ExcelUploadModal } from "@/components/common/ExcelUploadModal";
import { exportToExcel } from "@/lib/utils/excelExport";
import { useAuth } from "@/hooks/useAuth";
import { toast } from "sonner";
import { ShippingPlanBatchModal } from "@/components/common/ShippingPlanBatchModal";
import { useTableSettings } from "@/hooks/useTableSettings";
import { TableSettingsModal } from "@/components/common/TableSettingsModal";
import { DynamicSearchFilter, FilterValue } from "@/components/common/DynamicSearchFilter";

const DETAIL_TABLE = "sales_order_detail";
const MASTER_TABLE = "sales_order_mng";

// 천단위 구분자 표시용
const formatNumber = (val: string) => {
  const num = val.replace(/[^\d.-]/g, "");
  if (!num) return "";
  const parts = num.split(".");
  parts[0] = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ",");
  return parts.join(".");
};
const parseNumber = (val: string) => val.replace(/,/g, "");

// 플랫 테이블 컬럼 정의 (마스터+디테일 통합)
const FLAT_COLUMNS = [
  { key: "order_no", label: "수주번호", source: "master" },
  { key: "partner_id", label: "거래처", source: "master" },
  { key: "order_date", label: "수주일", source: "master" },
  { key: "part_code", label: "품번", source: "detail" },
  { key: "part_name", label: "품명", source: "detail" },
  { key: "spec", label: "규격", source: "detail" },
  { key: "unit", label: "단위", source: "detail" },
  { key: "qty", label: "수량", source: "detail" },
  { key: "ship_qty", label: "출하수량", source: "detail" },
  { key: "balance_qty", label: "잔량", source: "detail" },
  { key: "unit_price", label: "단가", source: "detail" },
  { key: "amount", label: "금액", source: "detail" },
  { key: "due_date", label: "납기일", source: "detail" },
  { key: "memo", label: "메모", source: "master" },
];

const DETAIL_HEADER_COLS = FLAT_COLUMNS.filter((c) => c.source === "detail");

// 필터용 전체 키
const GRID_COLUMNS_CONFIG = FLAT_COLUMNS.map(({ key, label }) => ({ key, label }));

// 총 컬럼 수: 체크박스(1) + 플랫 컬럼(14) = 15
const TOTAL_COLS = 15;

// 헤더 필터 Popover
function HeaderFilterPopover({
  colKey, colLabel, uniqueValues, filterValues, onToggle, onClear,
}: {
  colKey: string;
  colLabel: string;
  uniqueValues: string[];
  filterValues: Set<string>;
  onToggle: (colKey: string, value: string) => void;
  onClear: (colKey: string) => void;
}) {
  const [filterSearch, setFilterSearch] = useState("");
  const hasFilter = filterValues.size > 0;
  const filteredValues = uniqueValues.filter(
    (v) => !filterSearch || v.toLowerCase().includes(filterSearch.toLowerCase())
  );

  return (
    <Popover>
      <PopoverTrigger asChild>
        <button
          onClick={(e) => e.stopPropagation()}
          className={cn(
            "hover:bg-primary/20 rounded p-0.5 transition-colors shrink-0",
            hasFilter && "text-primary bg-primary/10",
          )}
          title="필터"
        >
          <Filter className="h-3 w-3" />
        </button>
      </PopoverTrigger>
      <PopoverContent className="w-56 p-2" align="start" onClick={(e) => e.stopPropagation()}>
        <div className="space-y-2">
          <div className="flex items-center justify-between border-b pb-2">
            <span className="text-xs font-medium">필터: {colLabel}</span>
            {hasFilter && (
              <button onClick={() => onClear(colKey)} className="text-primary text-xs hover:underline">
                초기화
              </button>
            )}
          </div>
          <div className="relative">
            <Search className="absolute left-2 top-1/2 -translate-y-1/2 h-3 w-3 text-muted-foreground" />
            <Input
              value={filterSearch}
              onChange={(e) => setFilterSearch(e.target.value)}
              placeholder="검색..."
              className="h-7 text-xs pl-7"
            />
          </div>
          <div className="max-h-52 space-y-0.5 overflow-y-auto">
            {filteredValues.slice(0, 100).map((val) => {
              const isSelected = filterValues.has(val);
              return (
                <div
                  key={val}
                  className={cn(
                    "hover:bg-muted flex cursor-pointer items-center gap-2 rounded px-2 py-1.5 text-xs",
                    isSelected && "bg-primary/10",
                  )}
                  onClick={() => onToggle(colKey, val)}
                >
                  <div className={cn(
                    "flex h-4 w-4 items-center justify-center rounded border shrink-0",
                    isSelected ? "bg-primary border-primary" : "border-input",
                  )}>
                    {isSelected && <Check className="text-primary-foreground h-3 w-3" />}
                  </div>
                  <span className="truncate">{val || "(빈 값)"}</span>
                </div>
              );
            })}
            {filteredValues.length > 100 && (
              <div className="text-muted-foreground px-2 py-1 text-xs">
                ...외 {filteredValues.length - 100}개
              </div>
            )}
          </div>
        </div>
      </PopoverContent>
    </Popover>
  );
}

export default function SalesOrderPage() {
  const { user } = useAuth();
  const { confirm, ConfirmDialogComponent } = useConfirmDialog();
  const [orders, setOrders] = useState<any[]>([]);
  const [loading, setLoading] = useState(false);
  const [totalCount, setTotalCount] = useState(0);

  // 검색 필터 (DynamicSearchFilter에서 관리)
  const [searchFilters, setSearchFilters] = useState<FilterValue[]>([]);

  // 모달
  const [isModalOpen, setIsModalOpen] = useState(false);
  const [isEditMode, setIsEditMode] = useState(false);
  const [saving, setSaving] = useState(false);
  const [masterForm, setMasterForm] = useState<Record<string, any>>({});
  const [detailRows, setDetailRows] = useState<any[]>([]);
  const [allowPriceEdit, setAllowPriceEdit] = useState(true);

  // 품목 선택 모달
  const [itemSelectOpen, setItemSelectOpen] = useState(false);
  const [itemSearchKeyword, setItemSearchKeyword] = useState("");
  const [itemSearchResults, setItemSearchResults] = useState<any[]>([]);
  const [itemSearchLoading, setItemSearchLoading] = useState(false);
  const [itemSelectedMap, setItemSelectedMap] = useState<Map<string, any>>(new Map());
  const [itemSearchDivision, setItemSearchDivision] = useState("all");
  const [itemPage, setItemPage] = useState(1);
  const [itemPageSize, setItemPageSize] = useState(20);
  const [itemTotalPages, setItemTotalPages] = useState(0);
  const [itemTotal, setItemTotal] = useState(0);
  const [itemPageInput, setItemPageInput] = useState("1");

  // 엑셀 업로드
  const [excelUploadOpen, setExcelUploadOpen] = useState(false);

  // 출하계획 모달
  const [shippingPlanOpen, setShippingPlanOpen] = useState(false);

  // 카테고리 옵션
  const [categoryOptions, setCategoryOptions] = useState<Record<string, { code: string; label: string }[]>>({});

  // 체크된 행 (다중선택)
  const [checkedIds, setCheckedIds] = useState<string[]>([]);

  // 납품처 목록
  const [deliveryOptions, setDeliveryOptions] = useState<{ code: string; label: string }[]>([]);

  // 테이블 설정
  const ts = useTableSettings("c16-sales-order", DETAIL_TABLE, GRID_COLUMNS_CONFIG);

  // 헤더 필터 & 정렬
  const [headerFilters, setHeaderFilters] = useState<Record<string, Set<string>>>({});
  const [sortState, setSortState] = useState<{ key: string; direction: "asc" | "desc" } | null>(null);

  // 카테고리 로드
  useEffect(() => {
    const loadCategories = async () => {
      const catColumns = ["sell_mode", "input_mode", "price_mode", "incoterms", "payment_term"];
      const optMap: Record<string, { code: string; label: string }[]> = {};
      const flatten = (vals: any[]): { code: string; label: string }[] => {
        const result: { code: string; label: string }[] = [];
        for (const v of vals) {
          result.push({ code: v.valueCode, label: v.valueLabel });
          if (v.children?.length) result.push(...flatten(v.children));
        }
        return result;
      };
      const LABEL_REPLACE: Record<string, string> = {
        "공급업체 우선": "거래처 우선",
        "공급업체우선": "거래처 우선",
      };
      const dedup = (items: { code: string; label: string }[]) => {
        const seen = new Set<string>();
        return items
          .map((item) => ({ ...item, label: LABEL_REPLACE[item.label] || item.label }))
          .filter((item) => {
            const key = item.label.replace(/\s/g, "");
            if (seen.has(key)) return false;
            seen.add(key);
            return true;
          });
      };
      await Promise.all(
        catColumns.map(async (col) => {
          try {
            const res = await apiClient.get(`/table-categories/${MASTER_TABLE}/${col}/values`);
            if (res.data?.success && res.data.data?.length > 0) {
              optMap[col] = dedup(flatten(res.data.data));
            }
          } catch { /* skip */ }
        })
      );
      // 거래처 목록
      try {
        const custRes = await apiClient.post(`/table-management/tables/customer_mng/data`, {
          page: 1, size: 500, autoFilter: true,
        });
        const custs = custRes.data?.data?.data || custRes.data?.data?.rows || [];
        optMap["partner_id"] = custs.map((c: any) => ({ code: c.customer_code, label: c.customer_name }));
      } catch { /* skip */ }
      // 사용자 목록
      try {
        const userRes = await apiClient.post(`/table-management/tables/user_info/data`, {
          page: 1, size: 500, autoFilter: true,
        });
        const users = userRes.data?.data?.data || userRes.data?.data?.rows || [];
        optMap["manager_id"] = users.map((u: any) => ({
          code: u.user_id || u.id,
          label: `${u.user_name || u.name || u.user_id}${u.position_name ? ` (${u.position_name})` : ""}`,
        }));
      } catch { /* skip */ }
      // item_info 카테고리
      for (const col of ["unit", "material", "division", "type"]) {
        try {
          const res = await apiClient.get(`/table-categories/item_info/${col}/values`);
          if (res.data?.success && res.data.data?.length > 0) {
            optMap[`item_${col}`] = flatten(res.data.data);
          }
        } catch { /* skip */ }
      }
      setCategoryOptions(optMap);
      // division 기본값
      const divs = optMap["item_division"] || [];
      const salesDiv = divs.find((o: any) => o.label === "영업관리")
        || divs.find((o: any) => o.label === "제품")
        || divs.find((o: any) => o.label === "판매품");
      if (salesDiv) setItemSearchDivision(salesDiv.code);
    };
    loadCategories();
  }, []);

  // 데이터 조회
  const fetchOrders = useCallback(async () => {
    setLoading(true);
    try {
      const filters = searchFilters.map(f => ({
        columnName: f.columnName,
        operator: f.operator,
        value: f.value,
      }));

      const res = await apiClient.post(`/table-management/tables/${DETAIL_TABLE}/data`, {
        page: 1, size: 500,
        dataFilter: filters.length > 0 ? { enabled: true, filters } : undefined,
        autoFilter: true,
        sort: { columnName: "order_no", order: "desc" },
      });
      const rows = res.data?.data?.data || res.data?.data?.rows || [];

      // order_no → sales_order_mng 조인
      const orderNos = [...new Set(rows.map((r: any) => r.order_no).filter(Boolean))];
      let masterMap: Record<string, any> = {};
      if (orderNos.length > 0) {
        try {
          const masterRes = await apiClient.post(`/table-management/tables/${MASTER_TABLE}/data`, {
            page: 1, size: orderNos.length + 10,
            dataFilter: { enabled: true, filters: [{ columnName: "order_no", operator: "in", value: orderNos }] },
            autoFilter: true,
          });
          const masters = masterRes.data?.data?.data || masterRes.data?.data?.rows || [];
          for (const m of masters) masterMap[m.order_no] = m;
        } catch { /* skip */ }
      }

      // part_code → item_info 조인
      const partCodes = [...new Set(rows.map((r: any) => r.part_code).filter(Boolean))];
      let itemMap: Record<string, any> = {};
      if (partCodes.length > 0) {
        try {
          const itemRes = await apiClient.post(`/table-management/tables/item_info/data`, {
            page: 1, size: partCodes.length + 10,
            dataFilter: { enabled: true, filters: [{ columnName: "item_number", operator: "in", value: partCodes }] },
            autoFilter: true,
          });
          const items = itemRes.data?.data?.data || itemRes.data?.data?.rows || [];
          for (const item of items) itemMap[item.item_number] = item;
        } catch { /* skip */ }
      }

      // 조인 적용 + 카테고리 코드→라벨 변환
      const resolveLabel = (key: string, code: string) => {
        if (!code) return "";
        const opts = categoryOptions[key];
        if (!opts) return code;
        return opts.find((o) => o.code === code)?.label || code;
      };
      const data = rows.map((row: any) => {
        const item = itemMap[row.part_code];
        const master = masterMap[row.order_no];
        const rawUnit = row.unit || item?.unit || "";
        return {
          ...row,
          part_name: row.part_name || item?.item_name || "",
          spec: row.spec || item?.size || "",
          material: row.material || (item ? (resolveLabel("item_material", item.material) || item.material || "") : ""),
          unit: resolveLabel("item_unit", rawUnit) || rawUnit,
          memo: row.memo || master?.memo || "",
          _master: master || {},
        };
      });

      setOrders(data);
      setTotalCount(res.data?.data?.total || data.length);
    } catch (err) {
      toast.error("수주 목록을 불러오는데 실패했습니다.");
    } finally {
      setLoading(false);
    }
  }, [searchFilters, categoryOptions]);

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

  // 카테고리 코드→라벨 변환
  const resolveLabel = useCallback((key: string, code: string) => {
    if (!code) return "";
    if (key === "partner_id" || key === "manager_id" || key === "price_mode") {
      return categoryOptions[key]?.find((o) => o.code === code)?.label || code;
    }
    return code;
  }, [categoryOptions]);

  // 플랫 행 생성 (마스터 필드를 각 디테일 행에 병합)
  const flatRows = useMemo(() => {
    return orders.map((row) => {
      const master = row._master || {};
      return {
        ...row,
        partner_id: resolveLabel("partner_id", master.partner_id || row.partner_id || ""),
        order_date: master.order_date || row.order_date || "",
        memo: row.memo || master.memo || "",
      };
    });
  }, [orders, resolveLabel]);

  // 컬럼별 고유값 (헤더 필터용)
  const columnUniqueValues = useMemo(() => {
    const result: Record<string, string[]> = {};
    for (const col of FLAT_COLUMNS) {
      const values = new Set<string>();
      flatRows.forEach((row) => {
        const val = row[col.key];
        if (val !== null && val !== undefined && val !== "") values.add(String(val));
      });
      result[col.key] = Array.from(values).sort();
    }
    return result;
  }, [flatRows]);

  // 필터 + 정렬 적용된 플랫 데이터
  const filteredFlatRows = useMemo(() => {
    let rows = [...flatRows];

    // 1차: 헤더 필터 적용
    for (const [colKey, values] of Object.entries(headerFilters)) {
      if (values.size === 0) continue;
      rows = rows.filter((row) => {
        const cellVal = row[colKey] != null ? String(row[colKey]) : "";
        return values.has(cellVal);
      });
    }

    // 2차: 정렬
    if (sortState) {
      const { key, direction } = sortState;
      rows.sort((a, b) => {
        const av = a[key] ?? "";
        const bv = b[key] ?? "";
        const na = Number(av); const nb = Number(bv);
        if (!isNaN(na) && !isNaN(nb)) return direction === "asc" ? na - nb : nb - na;
        return direction === "asc" ? String(av).localeCompare(String(bv)) : String(bv).localeCompare(String(av));
      });
    }

    return rows;
  }, [flatRows, headerFilters, sortState]);

  // 헤더 필터 토글/초기화
  const toggleHeaderFilter = (colKey: string, value: string) => {
    setHeaderFilters((prev) => {
      const next = { ...prev };
      const set = new Set(next[colKey] || []);
      if (set.has(value)) set.delete(value); else set.add(value);
      if (set.size === 0) delete next[colKey]; else next[colKey] = set;
      return next;
    });
  };

  const clearHeaderFilter = (colKey: string) => {
    setHeaderFilters((prev) => {
      const next = { ...prev };
      delete next[colKey];
      return next;
    });
  };

  const handleSort = (key: string) => {
    setSortState((prev) =>
      prev?.key === key
        ? prev.direction === "asc" ? { key, direction: "desc" } : null
        : { key, direction: "asc" }
    );
  };

  const getCategoryLabel = (col: string, code: string) => {
    if (!code) return "";
    const found = categoryOptions[col]?.find((o) => o.code === code);
    return found?.label || code;
  };

  const loadDeliveryOptions = async (customerCode: string) => {
    if (!customerCode) { setDeliveryOptions([]); return; }
    try {
      const res = await apiClient.post(`/table-management/tables/delivery_destination/data`, {
        page: 1, size: 100,
        dataFilter: { enabled: true, filters: [{ columnName: "customer_code", operator: "equals", value: customerCode }] },
        autoFilter: true,
      });
      const rows = res.data?.data?.data || res.data?.data?.rows || [];
      setDeliveryOptions(rows.map((r: any) => ({
        code: r.destination_code || r.id,
        label: `${r.destination_name}${r.address ? ` (${r.address})` : ""}`,
      })));
    } catch { setDeliveryOptions([]); }
  };

  // 등록 모달 열기
  const openRegisterModal = () => {
    const defaultSellMode = categoryOptions["sell_mode"]?.[0]?.code || "";
    const defaultInputMode = categoryOptions["input_mode"]?.[0]?.code || "";
    const defaultPriceMode = categoryOptions["price_mode"]?.[0]?.code || "";
    setMasterForm({
      input_mode: defaultInputMode, sell_mode: defaultSellMode, price_mode: defaultPriceMode,
      manager_id: user?.userId || "", order_date: new Date().toISOString().split("T")[0],
    });
    setDetailRows([]);
    setDeliveryOptions([]);
    setIsEditMode(false);
    setIsModalOpen(true);
  };

  // 수정 모달 열기
  const openEditModal = async (orderNo: string) => {
    try {
      const masterRes = await apiClient.post(`/table-management/tables/${MASTER_TABLE}/data`, {
        page: 1, size: 1,
        dataFilter: { enabled: true, filters: [{ columnName: "order_no", operator: "equals", value: orderNo }] },
        autoFilter: true,
      });
      const masterData = (masterRes.data?.data?.data || masterRes.data?.data?.rows || [])[0];

      const detailRes = await apiClient.post(`/table-management/tables/${DETAIL_TABLE}/data`, {
        page: 1, size: 100,
        dataFilter: { enabled: true, filters: [{ columnName: "order_no", operator: "equals", value: orderNo }] },
        autoFilter: true,
      });
      const detailData = detailRes.data?.data?.data || detailRes.data?.data?.rows || [];

      setMasterForm(masterData || {});
      setDetailRows(detailData.map((d: any, i: number) => ({ ...d, _id: d.id || `row_${i}` })));
      setIsEditMode(true);
      setIsModalOpen(true);
    } catch (err) {
      toast.error("수주 정보를 불러오는데 실패했습니다.");
    }
  };

  // 삭제 (선택한 디테일 삭제 → 디테일 0건인 마스터 자동 삭제)
  const handleDelete = async () => {
    if (checkedIds.length === 0) { toast.error("삭제할 항목을 선택해주세요."); return; }
    const ok = await confirm(`${checkedIds.length}건의 수주 항목을 삭제하시겠습니까?`, {
      description: "삭제된 데이터는 복구할 수 없습니다.",
      variant: "destructive",
      confirmText: "삭제",
    });
    if (!ok) return;
    try {
      // 1. 선택한 디테일 삭제
      await apiClient.delete(`/table-management/tables/${DETAIL_TABLE}/delete`, {
        data: checkedIds.map((id) => ({ id })),
      });

      // 2. 영향받는 수주번호의 잔여 디테일 확인 → 0건이면 마스터도 삭제
      const selectedItems = orders.filter((o) => checkedIds.includes(o.id));
      const orderNos = [...new Set(selectedItems.map((o) => o.order_no))];
      for (const orderNo of orderNos) {
        const remainRes = await apiClient.post(`/table-management/tables/${DETAIL_TABLE}/data`, {
          page: 1, size: 1,
          dataFilter: { enabled: true, filters: [{ columnName: "order_no", operator: "equals", value: orderNo }] },
          autoFilter: true,
        });
        const remaining = remainRes.data?.data?.data || remainRes.data?.data?.rows || [];
        if (remaining.length === 0) {
          // 디테일 0건 → 마스터 삭제
          const masterRes = await apiClient.post(`/table-management/tables/${MASTER_TABLE}/data`, {
            page: 1, size: 1,
            dataFilter: { enabled: true, filters: [{ columnName: "order_no", operator: "equals", value: orderNo }] },
            autoFilter: true,
          });
          const masters = masterRes.data?.data?.data || masterRes.data?.data?.rows || [];
          if (masters.length > 0) {
            await apiClient.delete(`/table-management/tables/${MASTER_TABLE}/delete`, {
              data: masters.map((m: any) => ({ id: m.id })),
            });
          }
        }
      }
      toast.success("삭제되었습니다.");
      setCheckedIds([]);
      fetchOrders();
    } catch (err) {
      toast.error("삭제에 실패했습니다.");
    }
  };

  // 저장 (마스터 + 디테일)
  const handleSave = async () => {
    if (!masterForm.order_no && !isEditMode) {
      toast.error("수주번호는 필수입니다.");
      return;
    }
    if (detailRows.length === 0) {
      toast.error("품목을 1개 이상 추가해주세요.");
      return;
    }
    setSaving(true);
    try {
      const { id, created_date, updated_date, writer, company_code, created_by, updated_by, ...masterFields } = masterForm;
      if (isEditMode && id) {
        await apiClient.put(`/table-management/tables/${MASTER_TABLE}/edit`, {
          originalData: { id },
          updatedData: masterFields,
        });
        const existingDetails = await apiClient.post(`/table-management/tables/${DETAIL_TABLE}/data`, {
          page: 1, size: 100,
          dataFilter: { enabled: true, filters: [{ columnName: "order_no", operator: "equals", value: masterForm.order_no }] },
          autoFilter: true,
        });
        const existings = existingDetails.data?.data?.data || existingDetails.data?.data?.rows || [];
        if (existings.length > 0) {
          await apiClient.delete(`/table-management/tables/${DETAIL_TABLE}/delete`, {
            data: existings.map((d: any) => ({ id: d.id })),
          });
        }
      } else {
        await apiClient.post(`/table-management/tables/${MASTER_TABLE}/add`, masterFields);
      }
      for (const row of detailRows) {
        const { _id, id: rowId, created_date: _cd, updated_date: _ud, writer: _w, company_code: _cc, ...detailFields } = row;
        await apiClient.post(`/table-management/tables/${DETAIL_TABLE}/add`, {
          ...detailFields,
          id: crypto.randomUUID(),
          order_no: masterForm.order_no,
        });
      }
      toast.success(isEditMode ? "수정되었습니다." : "등록되었습니다.");
      setIsModalOpen(false);
      fetchOrders();
    } catch (err: any) {
      toast.error(err.response?.data?.message || "저장에 실패했습니다.");
    } finally {
      setSaving(false);
    }
  };

  // 품목 검색
  const searchItems = async (page?: number, size?: number) => {
    const p = page ?? itemPage;
    const s = size ?? itemPageSize;
    setItemSearchLoading(true);
    try {
      const filters: any[] = [];
      if (itemSearchKeyword) filters.push({ columnName: "item_name", operator: "contains", value: itemSearchKeyword });

      // 거래처우선 단가방식일 때 거래처에 연결된 품목만 필터링
      const isCustomerPrice = masterForm.price_mode === "CAT_MM0BV3OS_41DX" || masterForm.price_mode === "CAT_MLKG7D8K_N8SI";
      const partnerId = masterForm.partner_id;
      let customerItemIds: Set<string> | null = null;

      if (isCustomerPrice && partnerId) {
        try {
          const mappingRes = await apiClient.post(`/table-management/tables/customer_item_mapping/data`, {
            page: 1, size: 500,
            dataFilter: { enabled: true, filters: [{ columnName: "customer_id", operator: "equals", value: partnerId }] },
            autoFilter: true,
          });
          const mappings = mappingRes.data?.data?.data || mappingRes.data?.data?.rows || [];
          customerItemIds = new Set(mappings.map((m: any) => m.item_id).filter(Boolean));
        } catch { /* skip */ }
      }

      const res = await apiClient.post(`/table-management/tables/item_info/data`, {
        page: 1, size: 500,
        dataFilter: filters.length > 0 ? { enabled: true, filters } : undefined,
        autoFilter: true,
      });
      const resData = res.data?.data;
      let allRows = resData?.data || resData?.rows || [];

      // 거래처우선일 때 연결된 품목만 표시
      if (customerItemIds) {
        allRows = allRows.filter((item: any) => customerItemIds!.has(item.item_number) || customerItemIds!.has(item.id));
      }

      // 관리품목 필터 (코드/라벨 혼재 대응)
      if (itemSearchDivision !== "all") {
        const divLabel = categoryOptions["item_division"]?.find((o) => o.code === itemSearchDivision)?.label || "";
        allRows = allRows.filter((item: any) => {
          const div = item.division || "";
          return div.includes(itemSearchDivision) || (divLabel && div.includes(divLabel));
        });
      }
      const total = allRows.length;
      const start = (p - 1) * s;
      setItemSearchResults(allRows.slice(start, start + s));
      setItemTotal(total);
      setItemTotalPages(Math.max(1, Math.ceil(total / s)));
    } catch { /* skip */ } finally {
      setItemSearchLoading(false);
    }
  };

  const handleItemPageChange = (newPage: number) => {
    if (newPage < 1 || newPage > itemTotalPages) return;
    setItemPage(newPage);
    setItemPageInput(String(newPage));
    searchItems(newPage);
  };

  const commitItemPageInput = () => {
    const parsed = parseInt(itemPageInput, 10);
    if (isNaN(parsed) || itemPageInput.trim() === "") { setItemPageInput(String(itemPage)); return; }
    const clamped = Math.max(1, Math.min(parsed, itemTotalPages || 1));
    if (clamped !== itemPage) handleItemPageChange(clamped);
    setItemPageInput(String(clamped));
  };

  const triggerNewSearch = () => {
    setItemPage(1);
    setItemPageInput("1");
    searchItems(1);
  };

  const addSelectedItemsToDetail = async () => {
    const selected = Array.from(itemSelectedMap.values());
    if (selected.length === 0) { toast.error("품목을 선택해주세요."); return; }

    const isStandardPrice = masterForm.price_mode === "CAT_MM0BUZKL_HJ7U" || masterForm.price_mode === "CAT_MLKG792S_54WJ";
    const isCustomerPrice = masterForm.price_mode === "CAT_MM0BV3OS_41DX" || masterForm.price_mode === "CAT_MLKG7D8K_N8SI";
    const partnerId = masterForm.partner_id;

    let customerPriceMap: Record<string, string> = {};
    if (isCustomerPrice && partnerId) {
      try {
        const itemIds = selected.map((item) => item.item_number || item.id);
        const res = await apiClient.post(`/table-management/tables/customer_item_prices/data`, {
          page: 1, size: 500,
          dataFilter: {
            enabled: true,
            filters: [
              { columnName: "customer_id", operator: "equals", value: partnerId },
              { columnName: "item_id", operator: "in", value: itemIds },
            ],
          },
          autoFilter: true,
        });
        const prices = res.data?.data?.data || res.data?.data?.rows || [];
        const _n = new Date();
        const today = `${_n.getFullYear()}-${String(_n.getMonth() + 1).padStart(2, "0")}-${String(_n.getDate()).padStart(2, "0")}`;
        for (const p of prices) {
          const start = p.start_date || "";
          const end = p.end_date || "";
          if (start && start > today) continue;
          if (end && end < today) continue;
          const price = p.calculated_price || p.base_price || p.unit_price || "";
          if (price && Number(price) > 0) {
            const existing = customerPriceMap[p.item_id];
            if (!existing || Number(price) > 0) customerPriceMap[p.item_id] = String(price);
          }
        }
      } catch { /* skip */ }
    }

    const newRows = selected.map((item) => {
      const itemCode = item.item_number || item.id;
      let unitPrice = "";
      if (isStandardPrice) {
        unitPrice = item.standard_price || item.selling_price || "";
      } else if (isCustomerPrice && partnerId) {
        unitPrice = customerPriceMap[itemCode] || "";
      }
      return {
        _id: `new_${Date.now()}_${Math.random()}`,
        part_code: itemCode,
        part_name: item.item_name,
        spec: item.size || "",
        material: getCategoryLabel("item_material", item.material) || item.material || "",
        packing_material: "",
        unit: getCategoryLabel("item_unit", item.unit) || item.unit || "",
        qty: "1",
        pack_qty: "0",
        unit_price: unitPrice,
        amount: unitPrice ? String(1 * parseFloat(unitPrice)) : "",
        due_date: "",
      };
    });

    setDetailRows((prev) => [...prev, ...newRows]);
    toast.success(`${selected.length}개 품목이 추가되었습니다.`);
    setItemSelectedMap(new Map());
    setItemSelectOpen(false);
  };

  // 단가 재계산: 단가방식/거래처 변경 시 기존 품목 단가 갱신
  const recalcPrices = useCallback(async (priceMode: string, partnerId: string) => {
    if (detailRows.length === 0) return;
    const STANDARD_CODES = ["CAT_MM0BUZKL_HJ7U", "CAT_MLKG792S_54WJ"];
    const CUSTOMER_CODES = ["CAT_MM0BV3OS_41DX", "CAT_MLKG7D8K_N8SI"];
    const isStandard = STANDARD_CODES.includes(priceMode);
    const isCustomer = CUSTOMER_CODES.includes(priceMode);

    if (isStandard) {
      // 품목 기준단가 조회
      const itemCodes = detailRows.map((r) => r.part_code).filter(Boolean);
      if (itemCodes.length === 0) return;
      try {
        const res = await apiClient.post(`/table-management/tables/item_info/data`, {
          page: 1, size: 500,
          dataFilter: { enabled: true, filters: [{ columnName: "item_number", operator: "in", value: itemCodes }] },
          autoFilter: true,
        });
        const items = res.data?.data?.data || res.data?.data?.rows || [];
        const priceMap: Record<string, string> = {};
        for (const item of items) {
          const price = item.standard_price || item.selling_price || "";
          if (price) priceMap[item.item_number] = String(price);
        }
        setDetailRows((prev) => prev.map((row) => {
          const up = priceMap[row.part_code] || "";
          const qty = parseFloat(row.qty) || 0;
          const price = parseFloat(up) || 0;
          return { ...row, unit_price: up, amount: (qty * price).toString() };
        }));
      } catch { /* skip */ }
    } else if (isCustomer && partnerId) {
      // 거래처별 단가 조회
      const itemCodes = detailRows.map((r) => r.part_code).filter(Boolean);
      if (itemCodes.length === 0) return;
      try {
        const res = await apiClient.post(`/table-management/tables/customer_item_prices/data`, {
          page: 1, size: 500,
          dataFilter: { enabled: true, filters: [
            { columnName: "customer_id", operator: "equals", value: partnerId },
            { columnName: "item_id", operator: "in", value: itemCodes },
          ]},
          autoFilter: true,
        });
        const prices = res.data?.data?.data || res.data?.data?.rows || [];
        const _n = new Date();
        const today = `${_n.getFullYear()}-${String(_n.getMonth() + 1).padStart(2, "0")}-${String(_n.getDate()).padStart(2, "0")}`;
        const priceMap: Record<string, string> = {};
        for (const p of prices) {
          if (p.start_date && p.start_date > today) continue;
          if (p.end_date && p.end_date < today) continue;
          const price = p.calculated_price || p.base_price || p.unit_price || "";
          if (price && Number(price) > 0) priceMap[p.item_id] = String(price);
        }
        setDetailRows((prev) => prev.map((row) => {
          const up = priceMap[row.part_code] || "";
          const qty = parseFloat(row.qty) || 0;
          const price = parseFloat(up) || 0;
          return { ...row, unit_price: up, amount: (qty * price).toString() };
        }));
      } catch { /* skip */ }
    }
  }, [detailRows]);

  const updateDetailRow = (idx: number, field: string, value: string) => {
    setDetailRows((prev) => {
      const next = [...prev];
      next[idx] = { ...next[idx], [field]: value };
      if (field === "qty" || field === "unit_price") {
        const qty = parseFloat(field === "qty" ? value : next[idx].qty) || 0;
        const price = parseFloat(field === "unit_price" ? value : next[idx].unit_price) || 0;
        next[idx].amount = (qty * price).toString();
      }
      return next;
    });
  };

  const removeDetailRow = (idx: number) => {
    setDetailRows((prev) => prev.filter((_, i) => i !== idx));
  };

  // 조건부 레이어 판단
  const isSupplierFirst = masterForm.input_mode === "CAT_MLZWPH5R_983R" || masterForm.input_mode === "CAT_MLKG5KP8_C39W";
  const isOverseas = masterForm.sell_mode === "CAT_MLZWFF2Z_BQCV" || masterForm.sell_mode === "CAT_MLKGAR2W_HAPO";

  const handleExcelDownload = async () => {
    if (orders.length === 0) { toast.error("다운로드할 데이터가 없습니다."); return; }
    const cols = ["order_no","part_code","part_name","spec","unit","qty","ship_qty","balance_qty","unit_price","amount","currency_code","due_date","memo"];
    const labels: Record<string, string> = {
      order_no:"수주번호",part_code:"품번",part_name:"품명",spec:"규격",unit:"단위",
      qty:"수량",ship_qty:"출하수량",balance_qty:"잔량",unit_price:"단가",
      amount:"금액",currency_code:"통화",due_date:"납기일",memo:"메모",
    };
    const data = orders.map((o) => {
      const row: Record<string, any> = {};
      for (const col of cols) row[labels[col]] = o[col] || "";
      return row;
    });
    await exportToExcel(data, "수주관리.xlsx", "수주목록");
    toast.success("다운로드 완료");
  };

  return (
    <div className="flex h-full flex-col gap-3 p-3">
      {/* 브레드크럼 */}
      <nav className="flex items-center gap-1.5 text-xs text-muted-foreground">
        <span>영업관리</span>
        <span className="opacity-40">/</span>
        <span className="font-medium text-foreground">수주관리</span>
      </nav>

      {/* 검색 필터 (DynamicSearchFilter) */}
      <DynamicSearchFilter
        tableName={DETAIL_TABLE}
        filterId="c16-sales-order"
        onFilterChange={setSearchFilters}
        dataCount={orders.length}
        externalFilterConfig={ts.filterConfig}
      />

      {/* 액션 바 */}
      <div className="flex flex-col gap-2 md:flex-row md:items-center md:justify-between">
        <div className="flex items-center gap-3">
          <h2 className="text-lg font-bold">수주 목록</h2>
          <span className="inline-flex items-center rounded-full border border-primary/15 bg-primary/5 px-2.5 py-0.5 font-mono text-[11px] font-bold text-primary">
            {totalCount}건
          </span>
        </div>
        <div className="flex items-center gap-2 overflow-x-auto">
          <Button size="sm" onClick={openRegisterModal}>
            <Plus className="w-4 h-4" /> 등록
          </Button>
          <Button
            variant="outline" size="sm"
            disabled={checkedIds.length !== 1}
            onClick={() => {
              const item = orders.find((o) => o.id === checkedIds[0]);
              if (item) openEditModal(item.order_no);
            }}
          >
            <Pencil className="w-4 h-4" /> 수정
          </Button>
          <Button
            variant="outline" size="sm"
            className="text-destructive border-destructive/20 bg-destructive/5 hover:bg-destructive/10 hover:text-destructive"
            disabled={checkedIds.length === 0}
            onClick={handleDelete}
          >
            <Trash2 className="w-4 h-4" /> 삭제{checkedIds.length > 0 && ` (${checkedIds.length})`}
          </Button>
          <div className="h-5 w-px bg-border mx-0.5" />
          <Button variant="outline" size="sm" onClick={() => setExcelUploadOpen(true)}>
            <FileSpreadsheet className="w-4 h-4" /> 엑셀 업로드
          </Button>
          <Button variant="outline" size="sm" onClick={handleExcelDownload}>
            <Download className="w-4 h-4" /> 엑셀
          </Button>
          <Button variant="outline" size="sm" disabled={checkedIds.length === 0} onClick={() => setShippingPlanOpen(true)}>
            <Truck className="w-4 h-4" /> 출하계획{checkedIds.length > 0 && ` (${checkedIds.length})`}
          </Button>
          <div className="h-5 w-px bg-border mx-0.5" />
          <Button variant="outline" size="sm" onClick={() => ts.setOpen(true)}>
            <Settings2 className="w-4 h-4" /> 설정
          </Button>
        </div>
      </div>

      {/* 데이터 테이블 (플랫 리스트) */}
      <div className="flex-1 overflow-hidden rounded-lg border border-border bg-card">
        <div className="h-full overflow-auto">
          <Table noWrapper style={{ minWidth: "1500px" }}>
            <colgroup>
              <col style={{ width: "40px" }} />
              <col style={{ width: "140px" }} />
              <col style={{ width: "140px" }} />
              <col style={{ width: "100px" }} />
              <col style={{ width: "120px" }} />
              <col style={{ width: "140px" }} />
              <col style={{ width: "80px" }} />
              <col style={{ width: "70px" }} />
              <col style={{ width: "80px" }} />
              <col style={{ width: "80px" }} />
              <col style={{ width: "80px" }} />
              <col style={{ width: "90px" }} />
              <col style={{ width: "110px" }} />
              <col style={{ width: "100px" }} />
              <col style={{ width: "120px" }} />
            </colgroup>
            <TableHeader className="sticky top-0 z-10">
              <TableRow className="bg-muted hover:bg-muted">
                <TableHead
                  className="text-center cursor-pointer"
                  onClick={() => {
                    const allFilteredIds = filteredFlatRows.map((r) => r.id);
                    const allChecked = allFilteredIds.length > 0 && allFilteredIds.every((id) => checkedIds.includes(id));
                    setCheckedIds(allChecked ? [] : allFilteredIds);
                  }}
                >
                  <Checkbox
                    checked={(() => {
                      const allFilteredIds = filteredFlatRows.map((r) => r.id);
                      return allFilteredIds.length > 0 && allFilteredIds.every((id) => checkedIds.includes(id));
                    })()}
                    onCheckedChange={() => {}}
                  />
                </TableHead>
                {FLAT_COLUMNS.map((col) => {
                  const isRight = ["qty", "ship_qty", "balance_qty", "unit_price", "amount"].includes(col.key);
                  return (
                    <TableHead key={col.key} className={cn("text-[11px] font-bold uppercase tracking-wide text-muted-foreground select-none", isRight && "text-right")}>
                      <div className={cn("inline-flex items-center gap-1", isRight && "justify-end w-full")}>
                        <div className="flex items-center gap-1 cursor-pointer min-w-0" onClick={() => handleSort(col.key)}>
                          <span className="truncate">{col.label}</span>
                          {sortState?.key === col.key && (
                            sortState.direction === "asc"
                              ? <ArrowUp className="h-3 w-3 text-primary shrink-0" />
                              : <ArrowDown className="h-3 w-3 text-primary shrink-0" />
                          )}
                        </div>
                        {(columnUniqueValues[col.key] || []).length > 0 && (
                          <HeaderFilterPopover
                            colKey={col.key} colLabel={col.label}
                            uniqueValues={columnUniqueValues[col.key] || []}
                            filterValues={headerFilters[col.key] || new Set<string>()}
                            onToggle={toggleHeaderFilter} onClear={clearHeaderFilter}
                          />
                        )}
                      </div>
                    </TableHead>
                  );
                })}
              </TableRow>
            </TableHeader>
            <TableBody>
              {loading ? (
                <TableRow>
                  <TableCell colSpan={TOTAL_COLS} className="py-16 text-center">
                    <Loader2 className="mx-auto h-6 w-6 animate-spin text-primary" />
                  </TableCell>
                </TableRow>
              ) : filteredFlatRows.length === 0 ? (
                <TableRow>
                  <TableCell colSpan={TOTAL_COLS} className="py-16 text-center">
                    <div className="flex flex-col items-center gap-2 text-muted-foreground">
                      <ClipboardList className="h-8 w-8 opacity-30" />
                      <span className="text-sm">등록된 수주가 없어요</span>
                    </div>
                  </TableCell>
                </TableRow>
              ) : (
                filteredFlatRows.map((row) => {
                  const isChecked = checkedIds.includes(row.id);
                  return (
                    <TableRow
                      key={row.id}
                      className={cn(
                        "cursor-pointer border-l-[3px] border-l-transparent transition-all",
                        isChecked ? "border-l-primary bg-primary/5" : "hover:bg-accent/50"
                      )}
                      onClick={() => {
                        setCheckedIds((prev) =>
                          prev.includes(row.id) ? prev.filter((id) => id !== row.id) : [...prev, row.id]
                        );
                      }}
                      onDoubleClick={() => openEditModal(row.order_no)}
                    >
                      <TableCell
                        className="text-center cursor-pointer"
                        onClick={(e) => {
                          e.stopPropagation();
                          setCheckedIds((prev) =>
                            prev.includes(row.id) ? prev.filter((id) => id !== row.id) : [...prev, row.id]
                          );
                        }}
                      >
                        <Checkbox checked={isChecked} onCheckedChange={() => {}} />
                      </TableCell>
                      <TableCell className="font-mono whitespace-nowrap text-[13px]">{row.order_no}</TableCell>
                      <TableCell className="text-[13px] truncate max-w-[140px]"><span className="block truncate">{row.partner_id || ""}</span></TableCell>
                      <TableCell className="whitespace-nowrap text-[13px]">{row.order_date || ""}</TableCell>
                      <TableCell className="font-mono text-[13px]">{row.part_code}</TableCell>
                      <TableCell className="text-[13px] max-w-[150px]"><span className="block truncate" title={row.part_name}>{row.part_name}</span></TableCell>
                      <TableCell className="text-[13px] text-muted-foreground">{row.spec}</TableCell>
                      <TableCell className="text-[13px]">{row.unit}</TableCell>
                      <TableCell className="text-right font-mono text-[13px]">{row.qty ? Number(row.qty).toLocaleString() : ""}</TableCell>
                      <TableCell className="text-right font-mono text-[13px] text-muted-foreground">{row.ship_qty ? Number(row.ship_qty).toLocaleString() : ""}</TableCell>
                      <TableCell className="text-right font-mono text-[13px]">{row.balance_qty ? Number(row.balance_qty).toLocaleString() : ""}</TableCell>
                      <TableCell className="text-right font-mono text-[13px]">{row.unit_price ? Number(row.unit_price).toLocaleString() : ""}</TableCell>
                      <TableCell className="text-right font-mono text-[13px] font-semibold">{row.amount ? Number(row.amount).toLocaleString() : ""}</TableCell>
                      <TableCell className="text-[13px]">{row.due_date || ""}</TableCell>
                      <TableCell className="text-muted-foreground"><span className="block truncate max-w-[120px]">{row.memo || ""}</span></TableCell>
                    </TableRow>
                  );
                })
              )}
            </TableBody>
          </Table>
        </div>
      </div>

      {/* 수주 등록/수정 모달 */}
      <Dialog open={isModalOpen} onOpenChange={setIsModalOpen}>
        <DialogContent className="flex flex-col gap-0 p-0 max-w-5xl w-full" style={{ maxHeight: "85vh" }}>
          <DialogHeader className="shrink-0 border-b border-border px-6 py-5">
            <DialogTitle className="text-[17px] font-bold">
              {isEditMode ? "수주 수정" : "수주 등록"}
            </DialogTitle>
            <DialogDescription className="text-sm text-muted-foreground">
              {isEditMode ? "수주 정보를 수정합니다." : "새로운 수주를 등록합니다."}
            </DialogDescription>
          </DialogHeader>

          <div className="flex-1 overflow-y-auto px-6 py-5 space-y-6">
            {/* 기본 정보 섹션 */}
            <div className="space-y-3">
              <div className="flex items-center gap-2 text-[13px] font-bold text-muted-foreground">
                기본 정보
                <div className="flex-1 h-px bg-border" />
              </div>
              <div className="grid grid-cols-1 gap-3.5 sm:grid-cols-2 lg:grid-cols-4">
                <div className="space-y-1">
                  <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">
                    수주번호 <span className="text-destructive">*</span>
                  </Label>
                  <Input
                    value={masterForm.order_no || ""}
                    onChange={(e) => setMasterForm((p) => ({ ...p, order_no: e.target.value }))}
                    placeholder="수주번호" className="h-9" disabled={isEditMode}
                  />
                </div>
                <div className="space-y-1">
                  <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">
                    수주일 <span className="text-destructive">*</span>
                  </Label>
                  <Input
                    type="date"
                    value={masterForm.order_date || ""}
                    onChange={(e) => setMasterForm((p) => ({ ...p, order_date: e.target.value }))}
                    className="h-9"
                  />
                </div>
                <div className="space-y-1">
                  <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">
                    판매유형 <span className="text-destructive">*</span>
                  </Label>
                  <Select value={masterForm.sell_mode || ""} onValueChange={(v) => setMasterForm((p) => ({ ...p, sell_mode: v }))}>
                    <SelectTrigger className="h-9"><SelectValue placeholder="선택" /></SelectTrigger>
                    <SelectContent>
                      {(categoryOptions["sell_mode"] || []).map((o) => (
                        <SelectItem key={o.code} value={o.code}>{o.label}</SelectItem>
                      ))}
                    </SelectContent>
                  </Select>
                </div>
                <div className="space-y-1">
                  <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">입력방식</Label>
                  <Select value={masterForm.input_mode || ""} onValueChange={(v) => {
                    setMasterForm((p) => {
                      const next = { ...p, input_mode: v };
                      // 입력방식 변경 시 거래처 관련 값 초기화
                      delete next.partner_id;
                      delete next.delivery_partner_id;
                      delete next.delivery_address;
                      return next;
                    });
                    setDeliveryOptions([]);
                  }}>
                    <SelectTrigger className="h-9"><SelectValue placeholder="선택" /></SelectTrigger>
                    <SelectContent>
                      {(categoryOptions["input_mode"] || []).map((o) => (
                        <SelectItem key={o.code} value={o.code}>{o.label}</SelectItem>
                      ))}
                    </SelectContent>
                  </Select>
                </div>
                <div className="space-y-1">
                  <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">단가방식</Label>
                  <Select value={masterForm.price_mode || ""} onValueChange={(v) => { setMasterForm((p) => ({ ...p, price_mode: v })); recalcPrices(v, masterForm.partner_id || ""); }}>
                    <SelectTrigger className="h-9"><SelectValue placeholder="선택" /></SelectTrigger>
                    <SelectContent>
                      {(categoryOptions["price_mode"] || []).map((o) => (
                        <SelectItem key={o.code} value={o.code}>{o.label}</SelectItem>
                      ))}
                    </SelectContent>
                  </Select>
                </div>
                <div className="flex items-end pb-1">
                  <label className="flex items-center gap-2 cursor-pointer">
                    <Checkbox checked={allowPriceEdit} onCheckedChange={(v) => setAllowPriceEdit(!!v)} />
                    <span className="text-sm font-medium">단가 수정 허용</span>
                  </label>
                </div>
              </div>
            </div>

            {/* 거래처 우선 조건부 레이어 */}
            {isSupplierFirst && (
              <div className="rounded-lg border border-dashed border-border bg-muted/50 p-4 space-y-3">
                <div className="flex items-center gap-1.5 text-xs font-semibold text-primary">
                  <ClipboardList className="w-3.5 h-3.5" /> 거래처 정보
                </div>
                <div className="grid grid-cols-1 gap-3.5 sm:grid-cols-2 lg:grid-cols-4">
                  <div className="space-y-1">
                    <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">거래처</Label>
                    <Select
                      value={masterForm.partner_id || ""}
                      onValueChange={(v) => { setMasterForm((p) => ({ ...p, partner_id: v, delivery_partner_id: "" })); loadDeliveryOptions(v); recalcPrices(masterForm.price_mode || "", v); }}
                    >
                      <SelectTrigger className="h-9"><SelectValue placeholder="거래처 선택" /></SelectTrigger>
                      <SelectContent>
                        {(categoryOptions["partner_id"] || []).map((o) => (
                          <SelectItem key={o.code} value={o.code}>{o.label}</SelectItem>
                        ))}
                      </SelectContent>
                    </Select>
                  </div>
                  <div className="space-y-1">
                    <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">담당자</Label>
                    <Select value={masterForm.manager_id || ""} onValueChange={(v) => setMasterForm((p) => ({ ...p, manager_id: v }))}>
                      <SelectTrigger className="h-9"><SelectValue placeholder="담당자 선택" /></SelectTrigger>
                      <SelectContent>
                        {(categoryOptions["manager_id"] || []).map((o) => (
                          <SelectItem key={o.code} value={o.code}>{o.label}</SelectItem>
                        ))}
                      </SelectContent>
                    </Select>
                  </div>
                  <div className="space-y-1">
                    <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">납품처</Label>
                    {deliveryOptions.length > 0 ? (
                      <Select
                        value={masterForm.delivery_partner_id || ""}
                        onValueChange={(v) => {
                          setMasterForm((p) => ({ ...p, delivery_partner_id: v }));
                          const found = deliveryOptions.find((o) => o.code === v);
                          if (found) {
                            const addr = found.label.match(/\((.+)\)$/)?.[1] || "";
                            if (addr) setMasterForm((p) => ({ ...p, delivery_partner_id: v, delivery_address: addr }));
                          }
                        }}
                      >
                        <SelectTrigger className="h-9"><SelectValue placeholder="납품처 선택" /></SelectTrigger>
                        <SelectContent>
                          {deliveryOptions.map((o) => (
                            <SelectItem key={o.code} value={o.code}>{o.label}</SelectItem>
                          ))}
                        </SelectContent>
                      </Select>
                    ) : (
                      <Input
                        value={masterForm.delivery_partner_id || ""}
                        onChange={(e) => setMasterForm((p) => ({ ...p, delivery_partner_id: e.target.value }))}
                        placeholder={masterForm.partner_id ? "등록된 납품처 없음" : "거래처를 먼저 선택해주세요"}
                        className="h-9" disabled={!masterForm.partner_id}
                      />
                    )}
                  </div>
                  <div className="space-y-1">
                    <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">납품장소</Label>
                    <Input
                      value={masterForm.delivery_address || ""}
                      onChange={(e) => setMasterForm((p) => ({ ...p, delivery_address: e.target.value }))}
                      placeholder="납품장소" className="h-9"
                    />
                  </div>
                </div>
              </div>
            )}

            {/* 해외판매 조건부 레이어 */}
            {isOverseas && (
              <div className="rounded-lg border border-dashed border-border bg-muted/50 p-4 space-y-3">
                <div className="flex items-center gap-1.5 text-xs font-semibold text-primary">
                  해외판매 추가 정보
                </div>
                <div className="grid grid-cols-1 gap-3.5 sm:grid-cols-2 lg:grid-cols-3">
                  <div className="space-y-1">
                    <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">인코텀즈</Label>
                    <Select value={masterForm.incoterms || ""} onValueChange={(v) => setMasterForm((p) => ({ ...p, incoterms: v }))}>
                      <SelectTrigger className="h-9"><SelectValue placeholder="선택" /></SelectTrigger>
                      <SelectContent>
                        {(categoryOptions["incoterms"] || []).map((o) => (
                          <SelectItem key={o.code} value={o.code}>{o.label}</SelectItem>
                        ))}
                      </SelectContent>
                    </Select>
                  </div>
                  <div className="space-y-1">
                    <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">결제조건</Label>
                    <Select value={masterForm.payment_term || ""} onValueChange={(v) => setMasterForm((p) => ({ ...p, payment_term: v }))}>
                      <SelectTrigger className="h-9"><SelectValue placeholder="선택" /></SelectTrigger>
                      <SelectContent>
                        {(categoryOptions["payment_term"] || []).map((o) => (
                          <SelectItem key={o.code} value={o.code}>{o.label}</SelectItem>
                        ))}
                      </SelectContent>
                    </Select>
                  </div>
                  <div className="space-y-1">
                    <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">통화</Label>
                    <Select value={masterForm.currency || "KRW"} onValueChange={(v) => setMasterForm((p) => ({ ...p, currency: v }))}>
                      <SelectTrigger className="h-9"><SelectValue placeholder="통화 선택" /></SelectTrigger>
                      <SelectContent>
                        <SelectItem value="KRW">KRW (원)</SelectItem>
                        <SelectItem value="USD">USD (달러)</SelectItem>
                        <SelectItem value="EUR">EUR (유로)</SelectItem>
                        <SelectItem value="JPY">JPY (엔)</SelectItem>
                        <SelectItem value="CNY">CNY (위안)</SelectItem>
                      </SelectContent>
                    </Select>
                  </div>
                  <div className="space-y-1">
                    <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">선적항</Label>
                    <Input value={masterForm.port_of_loading || ""} onChange={(e) => setMasterForm((p) => ({ ...p, port_of_loading: e.target.value }))} className="h-9" />
                  </div>
                  <div className="space-y-1">
                    <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">도착항</Label>
                    <Input value={masterForm.port_of_discharge || ""} onChange={(e) => setMasterForm((p) => ({ ...p, port_of_discharge: e.target.value }))} className="h-9" />
                  </div>
                  <div className="space-y-1">
                    <Label className="text-[11px] font-semibold uppercase tracking-wide text-muted-foreground">HS Code</Label>
                    <Input value={masterForm.hs_code || ""} onChange={(e) => setMasterForm((p) => ({ ...p, hs_code: e.target.value }))} className="h-9 font-mono text-xs" />
                  </div>
                </div>
              </div>
            )}

            {/* 품목 내역 리피터 */}
            <div className="space-y-2.5">
              <div className="flex items-center justify-between">
                <div className="flex items-center gap-2 text-[13px] font-bold text-muted-foreground">
                  <Package className="w-4 h-4" /> 품목 내역
                  <span className="inline-flex items-center rounded-full border border-primary/15 bg-primary/5 px-2 py-0.5 font-mono text-[11px] font-bold text-primary">
                    {detailRows.length}
                  </span>
                </div>
                <Button size="sm" onClick={() => {
                  setItemSelectedMap(new Map());
                  setItemPage(1);
                  setItemPageInput("1");
                  setItemSearchKeyword("");
                  setItemSelectOpen(true);
                  searchItems(1);
                }}>
                  <Plus className="w-4 h-4" /> 품목 추가
                </Button>
              </div>
              {detailRows.length === 0 ? (
                <div className="flex flex-col items-center gap-2 rounded-lg border border-dashed border-border py-8 text-muted-foreground">
                  <Package className="h-8 w-8 opacity-40" />
                  <span className="text-sm">아직 추가된 품목이 없어요. 위 버튼으로 품목을 추가해주세요.</span>
                </div>
              ) : (
                <div className="overflow-x-auto rounded-lg border border-border">
                  <Table noWrapper className="min-w-max w-full">
                    <TableHeader className="sticky top-0 z-10">
                      <TableRow className="bg-muted hover:bg-muted">
                        <TableHead className="w-10 text-center text-[11px] font-bold uppercase tracking-wide text-muted-foreground">No</TableHead>
                        <TableHead className="w-28 text-[11px] font-bold uppercase tracking-wide text-muted-foreground">품번</TableHead>
                        <TableHead className="w-32 text-[11px] font-bold uppercase tracking-wide text-muted-foreground">품명</TableHead>
                        <TableHead className="w-20 text-[11px] font-bold uppercase tracking-wide text-muted-foreground">규격</TableHead>
                        <TableHead className="w-20 text-[11px] font-bold uppercase tracking-wide text-muted-foreground">재질</TableHead>
                        <TableHead className="w-24 text-[11px] font-bold uppercase tracking-wide text-muted-foreground">포장재</TableHead>
                        <TableHead className="w-20 text-[11px] font-bold uppercase tracking-wide text-muted-foreground">단위</TableHead>
                        <TableHead className="w-20 text-right text-[11px] font-bold uppercase tracking-wide text-muted-foreground">수량</TableHead>
                        <TableHead className="w-20 text-right text-[11px] font-bold uppercase tracking-wide text-muted-foreground">포장수량</TableHead>
                        <TableHead className="w-24 text-right text-[11px] font-bold uppercase tracking-wide text-muted-foreground">단가</TableHead>
                        <TableHead className="w-24 text-right text-[11px] font-bold uppercase tracking-wide text-muted-foreground">금액</TableHead>
                        <TableHead className="w-32 text-[11px] font-bold uppercase tracking-wide text-muted-foreground">납기일</TableHead>
                        <TableHead className="w-24 text-center text-[11px] font-bold uppercase tracking-wide text-muted-foreground">분할/삭제</TableHead>
                      </TableRow>
                    </TableHeader>
                    <TableBody>
                      {detailRows.map((row, idx) => (
                        <TableRow key={row._id || idx}>
                          <TableCell className="text-center font-mono text-[13px] text-muted-foreground/50">{idx + 1}</TableCell>
                          <TableCell className="max-w-[112px]">
                            <span className="block truncate font-mono text-[13px]" title={row.part_code}>{row.part_code}</span>
                          </TableCell>
                          <TableCell className="max-w-[128px]">
                            <span className="block truncate text-[13px]" title={row.part_name}>{row.part_name}</span>
                          </TableCell>
                          <TableCell className="text-[13px] text-muted-foreground">{row.spec}</TableCell>
                          <TableCell className="text-[13px] text-muted-foreground">{row.material}</TableCell>
                          <TableCell>
                            <Input
                              value={row.packing_material || ""}
                              onChange={(e) => updateDetailRow(idx, "packing_material", e.target.value)}
                              placeholder="포장재"
                              className="h-8 text-xs"
                            />
                          </TableCell>
                          <TableCell>
                            <Select value={row.unit || ""} onValueChange={(v) => updateDetailRow(idx, "unit", v)}>
                              <SelectTrigger className="h-8 text-xs"><SelectValue placeholder="단위" /></SelectTrigger>
                              <SelectContent>
                                {(categoryOptions["item_unit"] || []).map((o) => (
                                  <SelectItem key={o.code} value={o.code}>{o.label}</SelectItem>
                                ))}
                              </SelectContent>
                            </Select>
                          </TableCell>
                          <TableCell>
                            <Input
                              type="number"
                              min="1"
                              value={row.qty || "1"}
                              onChange={(e) => updateDetailRow(idx, "qty", e.target.value)}
                              className="h-8 text-xs text-right font-mono w-16"
                            />
                          </TableCell>
                          <TableCell>
                            <Input
                              type="number"
                              min="0"
                              value={row.pack_qty || "0"}
                              onChange={(e) => updateDetailRow(idx, "pack_qty", e.target.value)}
                              className="h-8 text-xs text-right font-mono w-16"
                            />
                          </TableCell>
                          <TableCell>
                            <Input
                              value={formatNumber(row.unit_price || "")}
                              onChange={(e) => updateDetailRow(idx, "unit_price", parseNumber(e.target.value))}
                              readOnly={!allowPriceEdit}
                              className={cn("h-8 text-xs text-right font-mono w-20", !allowPriceEdit && "bg-muted cursor-not-allowed")}
                            />
                          </TableCell>
                          <TableCell className="text-right font-mono text-[13px] font-semibold">
                            {row.amount ? Number(row.amount).toLocaleString() : "0"}
                          </TableCell>
                          <TableCell>
                            <Input
                              type="date"
                              value={row.due_date || ""}
                              onChange={(e) => updateDetailRow(idx, "due_date", e.target.value)}
                              className="h-8 text-xs"
                            />
                          </TableCell>
                          <TableCell className="text-center">
                            <div className="flex items-center gap-1 justify-center">
                              <Button
                                variant="default" size="sm"
                                className="h-7 px-2 text-[11px] bg-emerald-500 hover:bg-emerald-600 text-white"
                                onClick={() => {
                                  setDetailRows((prev) => {
                                    const next = [...prev];
                                    const newRow = { ...next[idx], _id: `split_${Date.now()}_${Math.random()}` };
                                    next.splice(idx + 1, 0, newRow);
                                    return next;
                                  });
                                  toast.success("행이 분할되었어요");
                                }}
                              >
                                분할
                              </Button>
                              <Button
                                variant="ghost" size="sm"
                                className="h-7 w-7 p-0 text-muted-foreground/50 hover:text-destructive hover:bg-destructive/5"
                                onClick={() => removeDetailRow(idx)}
                              >
                                <X className="w-3.5 h-3.5" />
                              </Button>
                            </div>
                          </TableCell>
                        </TableRow>
                      ))}
                    </TableBody>
                  </Table>
                </div>
              )}
            </div>

            {/* 비고 */}
            <div className="space-y-3">
              <div className="flex items-center gap-2 text-[13px] font-bold text-muted-foreground">
                비고
                <div className="flex-1 h-px bg-border" />
              </div>
              <textarea
                value={masterForm.memo || ""}
                onChange={(e) => setMasterForm((p) => ({ ...p, memo: e.target.value }))}
                placeholder="특이사항이나 메모를 입력해주세요"
                rows={3}
                className="w-full rounded-md border border-input bg-muted px-3 py-2 text-sm text-foreground placeholder:text-muted-foreground/50 focus:border-primary focus:outline-none focus:ring-[3px] focus:ring-ring/25 resize-vertical min-h-[80px]"
              />
            </div>
          </div>

          <DialogFooter className="shrink-0 border-t border-border px-6 py-4">
            <Button variant="outline" onClick={() => setIsModalOpen(false)}>취소</Button>
            <Button onClick={handleSave} disabled={saving}>
              {saving ? <Loader2 className="w-4 h-4 animate-spin" /> : <Save className="w-4 h-4" />} 저장
            </Button>
          </DialogFooter>

          {/* 품목 선택 중첩 모달 */}
          <Dialog open={itemSelectOpen} onOpenChange={setItemSelectOpen}>
            <DialogContent className="max-w-3xl" style={{ maxHeight: "70vh" }} onInteractOutside={(e) => e.preventDefault()}>
              <DialogHeader>
                <DialogTitle>품목 선택</DialogTitle>
                <DialogDescription>수주에 추가할 품목을 선택 후 하단 버튼을 눌러주세요.</DialogDescription>
              </DialogHeader>
              <div className="flex gap-2 mb-3">
                <Input
                  placeholder="품명/품목코드 검색"
                  value={itemSearchKeyword}
                  onChange={(e) => setItemSearchKeyword(e.target.value)}
                  onKeyDown={(e) => e.key === "Enter" && triggerNewSearch()}
                  className="h-9 flex-1"
                />
                <Select value={itemSearchDivision} onValueChange={setItemSearchDivision}>
                  <SelectTrigger className="h-9 w-[130px]"><SelectValue placeholder="관리품목" /></SelectTrigger>
                  <SelectContent>
                    <SelectItem value="all">전체</SelectItem>
                    {(categoryOptions["item_division"] || []).map((o) => (
                      <SelectItem key={o.code} value={o.code}>{o.label}</SelectItem>
                    ))}
                  </SelectContent>
                </Select>
                <Button size="sm" onClick={triggerNewSearch} disabled={itemSearchLoading} className="h-9">
                  {itemSearchLoading ? <Loader2 className="w-4 h-4 animate-spin" /> : <><Search className="w-4 h-4 mr-1" />조회</>}
                </Button>
              </div>
              <div className="overflow-auto rounded-lg border border-border" style={{ maxHeight: "320px" }}>
                <Table noWrapper>
                  <TableHeader className="sticky top-0 z-10">
                    <TableRow className="bg-muted hover:bg-muted">
                      <TableHead className="w-10 text-center">
                        <input
                          type="checkbox"
                          checked={itemSearchResults.length > 0 && itemSearchResults.every((i) => itemSelectedMap.has(i.id))}
                          onChange={(e) => {
                            setItemSelectedMap((prev) => {
                              const next = new Map(prev);
                              if (e.target.checked) itemSearchResults.forEach((i) => next.set(i.id, i));
                              else itemSearchResults.forEach((i) => next.delete(i.id));
                              return next;
                            });
                          }}
                        />
                      </TableHead>
                      <TableHead className="w-32 text-[11px] font-bold uppercase tracking-wide text-muted-foreground">품목코드</TableHead>
                      <TableHead className="min-w-[150px] text-[11px] font-bold uppercase tracking-wide text-muted-foreground">품명</TableHead>
                      <TableHead className="w-24 text-[11px] font-bold uppercase tracking-wide text-muted-foreground">규격</TableHead>
                      <TableHead className="w-24 text-[11px] font-bold uppercase tracking-wide text-muted-foreground">재질</TableHead>
                      <TableHead className="w-16 text-[11px] font-bold uppercase tracking-wide text-muted-foreground">단위</TableHead>
                    </TableRow>
                  </TableHeader>
                  <TableBody>
                    {itemSearchResults.length === 0 ? (
                      <TableRow>
                        <TableCell colSpan={6} className="py-8 text-center text-muted-foreground">검색 결과가 없어요</TableCell>
                      </TableRow>
                    ) : itemSearchResults.map((item) => (
                      <TableRow
                        key={item.id}
                        className={cn("cursor-pointer", itemSelectedMap.has(item.id) && "bg-primary/5")}
                        onClick={() => setItemSelectedMap((prev) => {
                          const next = new Map(prev);
                          if (next.has(item.id)) next.delete(item.id); else next.set(item.id, item);
                          return next;
                        })}
                      >
                        <TableCell className="text-center">
                          <input type="checkbox" checked={itemSelectedMap.has(item.id)} readOnly />
                        </TableCell>
                        <TableCell className="max-w-[128px]">
                          <span className="block truncate text-[13px]" title={item.item_number}>{item.item_number}</span>
                        </TableCell>
                        <TableCell className="max-w-[150px]">
                          <span className="block truncate text-sm" title={item.item_name}>{item.item_name}</span>
                        </TableCell>
                        <TableCell className="text-[13px]">{item.size}</TableCell>
                        <TableCell className="text-[13px]">
                          {categoryOptions["item_material"]?.find((o) => o.code === item.material)?.label || item.material}
                        </TableCell>
                        <TableCell className="text-[13px]">
                          {categoryOptions["item_unit"]?.find((o) => o.code === item.unit)?.label || item.unit}
                        </TableCell>
                      </TableRow>
                    ))}
                  </TableBody>
                </Table>
              </div>
              <div className="flex items-center justify-between w-full border-t pt-2">
                <div className="flex items-center gap-1">
                  <span className="text-xs text-muted-foreground">표시:</span>
                  <input
                    type="number" min={1} max={200} value={itemPageSize}
                    onChange={(e) => {
                      const v = Math.min(200, Math.max(1, Number(e.target.value) || 20));
                      setItemPageSize(v);
                      setItemPage(1);
                      setItemPageInput("1");
                      searchItems(1, v);
                    }}
                    className="h-7 w-14 rounded-md border px-1 text-center text-xs"
                  />
                </div>
                <div className="flex items-center gap-1">
                  <Button variant="outline" size="sm" className="h-7 w-7 p-0"
                    onClick={() => handleItemPageChange(1)} disabled={itemPage === 1 || itemSearchLoading}>
                    <ChevronsLeft className="h-3 w-3" />
                  </Button>
                  <Button variant="outline" size="sm" className="h-7 w-7 p-0"
                    onClick={() => handleItemPageChange(itemPage - 1)} disabled={itemPage === 1 || itemSearchLoading}>
                    <ChevronLeft className="h-3 w-3" />
                  </Button>
                  <input
                    type="text" inputMode="numeric" value={itemPageInput}
                    onChange={(e) => setItemPageInput(e.target.value)}
                    onKeyDown={(e) => { if (e.key === "Enter") { commitItemPageInput(); (e.target as HTMLInputElement).blur(); } }}
                    onBlur={commitItemPageInput}
                    onFocus={(e) => e.target.select()}
                    className="h-7 w-10 rounded-md border px-1 text-center text-xs"
                  />
                  <span className="text-xs text-muted-foreground">/ {itemTotalPages || 1}</span>
                  <Button variant="outline" size="sm" className="h-7 w-7 p-0"
                    onClick={() => handleItemPageChange(itemPage + 1)} disabled={itemPage >= itemTotalPages || itemSearchLoading}>
                    <ChevronRight className="h-3 w-3" />
                  </Button>
                  <Button variant="outline" size="sm" className="h-7 w-7 p-0"
                    onClick={() => handleItemPageChange(itemTotalPages)} disabled={itemPage >= itemTotalPages || itemSearchLoading}>
                    <ChevronsRight className="h-3 w-3" />
                  </Button>
                </div>
                <span className="text-xs text-muted-foreground">총 {itemTotal}건</span>
              </div>
              <DialogFooter>
                <div className="flex w-full items-center justify-between">
                  <span className="text-sm text-muted-foreground">{itemSelectedMap.size}개 선택됨</span>
                  <div className="flex gap-2">
                    <Button variant="outline" onClick={() => { setItemSelectedMap(new Map()); setItemSelectOpen(false); }}>취소</Button>
                    <Button onClick={addSelectedItemsToDetail} disabled={itemSelectedMap.size === 0}>
                      <Plus className="w-4 h-4 mr-1" />{itemSelectedMap.size}개 추가
                    </Button>
                  </div>
                </div>
              </DialogFooter>
            </DialogContent>
          </Dialog>
        </DialogContent>
      </Dialog>

      {/* 출하계획 동시 등록 모달 */}
      <ShippingPlanBatchModal
        open={shippingPlanOpen}
        onOpenChange={setShippingPlanOpen}
        selectedDetailIds={checkedIds}
        onSuccess={fetchOrders}
      />

      {/* 엑셀 업로드 */}
      <ExcelUploadModal
        open={excelUploadOpen}
        onOpenChange={setExcelUploadOpen}
        tableName={DETAIL_TABLE}
        userId={user?.userId}
        onSuccess={() => fetchOrders()}
      />

      {/* 테이블 설정 모달 */}
      <TableSettingsModal
        open={ts.open}
        onOpenChange={ts.setOpen}
        tableName={ts.tableName}
        settingsId={ts.settingsId}
        defaultVisibleKeys={ts.defaultVisibleKeys}
        onSave={ts.applySettings}
      />

      {/* 공통 확인 다이얼로그 */}
      {ConfirmDialogComponent}
    </div>
  );
}