"use client";

import React, { useState, useEffect, useCallback, useMemo } from "react";
import { ComponentRendererProps } from "@/types/component";
import {
  SplitPanelLayout2Config,
  ColumnConfig,
  DataTransferField,
} from "./types";
import { defaultConfig } from "./config";
import { cn } from "@/lib/utils";
import { Search, Plus, ChevronRight, ChevronDown, Edit, Trash2, Users, Building2 } from "lucide-react";
import { Input } from "@/components/ui/input";
import { Button } from "@/components/ui/button";
import { Card, CardContent } from "@/components/ui/card";
import { toast } from "sonner";
import { useScreenContextOptional } from "@/contexts/ScreenContext";
import { apiClient } from "@/lib/api/client";

export interface SplitPanelLayout2ComponentProps extends ComponentRendererProps {
  // 추가 props
}

/**
 * SplitPanelLayout2 컴포넌트
 * 마스터-디테일 패턴의 좌우 분할 레이아웃 (개선 버전)
 */
export const SplitPanelLayout2Component: React.FC<SplitPanelLayout2ComponentProps> = ({
  component,
  isDesignMode = false,
  isSelected = false,
  isPreview = false,
  onClick,
  ...props
}) => {
  const config = useMemo(() => {
    return {
      ...defaultConfig,
      ...component.componentConfig,
    } as SplitPanelLayout2Config;
  }, [component.componentConfig]);

  // ScreenContext (데이터 전달용)
  const screenContext = useScreenContextOptional();

  // 상태 관리
  const [leftData, setLeftData] = useState<any[]>([]);
  const [rightData, setRightData] = useState<any[]>([]);
  const [selectedLeftItem, setSelectedLeftItem] = useState<any>(null);
  const [leftSearchTerm, setLeftSearchTerm] = useState("");
  const [rightSearchTerm, setRightSearchTerm] = useState("");
  const [leftLoading, setLeftLoading] = useState(false);
  const [rightLoading, setRightLoading] = useState(false);
  const [expandedItems, setExpandedItems] = useState<Set<string>>(new Set());
  const [splitPosition, setSplitPosition] = useState(config.splitRatio || 30);
  const [isResizing, setIsResizing] = useState(false);

  // 좌측 패널 컬럼 라벨 매핑
  const [leftColumnLabels, setLeftColumnLabels] = useState<Record<string, string>>({});
  const [rightColumnLabels, setRightColumnLabels] = useState<Record<string, string>>({});


  // 좌측 데이터 로드
  const loadLeftData = useCallback(async () => {
    if (!config.leftPanel?.tableName || isDesignMode) return;

    setLeftLoading(true);
    try {
      const response = await apiClient.post(`/table-management/tables/${config.leftPanel.tableName}/data`, {
        page: 1,
        size: 1000, // 전체 데이터 로드
        // 멀티테넌시: 자동으로 company_code 필터링 적용
        autoFilter: {
          enabled: true,
          filterColumn: "company_code",
          filterType: "company",
        },
      });
      if (response.data.success) {
        // API 응답 구조: { success: true, data: { data: [...], total, page, ... } }
        let data = response.data.data?.data || [];

        // 계층 구조 처리
        if (config.leftPanel.hierarchyConfig?.enabled) {
          data = buildHierarchy(
            data,
            config.leftPanel.hierarchyConfig.idColumn,
            config.leftPanel.hierarchyConfig.parentColumn
          );
        }

        setLeftData(data);
        console.log(`[SplitPanelLayout2] 좌측 데이터 로드: ${data.length}건 (company_code 필터 적용)`);
      }
    } catch (error) {
      console.error("[SplitPanelLayout2] 좌측 데이터 로드 실패:", error);
      toast.error("좌측 패널 데이터를 불러오는데 실패했습니다.");
    } finally {
      setLeftLoading(false);
    }
  }, [config.leftPanel?.tableName, config.leftPanel?.hierarchyConfig, isDesignMode]);

  // 우측 데이터 로드 (좌측 선택 항목 기반)
  const loadRightData = useCallback(async (selectedItem: any) => {
    if (!config.rightPanel?.tableName || !config.joinConfig?.leftColumn || !config.joinConfig?.rightColumn || !selectedItem) {
      setRightData([]);
      return;
    }

    const joinValue = selectedItem[config.joinConfig.leftColumn];
    if (joinValue === undefined || joinValue === null) {
      console.log(`[SplitPanelLayout2] 조인 값이 없음: ${config.joinConfig.leftColumn}`);
      setRightData([]);
      return;
    }

    setRightLoading(true);
    try {
      console.log(`[SplitPanelLayout2] 우측 데이터 로드 시작: ${config.rightPanel.tableName}, ${config.joinConfig.rightColumn}=${joinValue}`);
      
      const response = await apiClient.post(`/table-management/tables/${config.rightPanel.tableName}/data`, {
        page: 1,
        size: 1000, // 전체 데이터 로드
        // dataFilter를 사용하여 정확한 값 매칭 (Entity 타입 검색 문제 회피)
        dataFilter: {
          enabled: true,
          matchType: "all",
          filters: [
            {
              id: "join_filter",
              columnName: config.joinConfig.rightColumn,
              operator: "equals",
              value: String(joinValue),
              valueType: "static",
            }
          ],
        },
        // 멀티테넌시: 자동으로 company_code 필터링 적용
        autoFilter: {
          enabled: true,
          filterColumn: "company_code",
          filterType: "company",
        },
      });

      if (response.data.success) {
        // API 응답 구조: { success: true, data: { data: [...], total, page, ... } }
        const data = response.data.data?.data || [];
        setRightData(data);
        console.log(`[SplitPanelLayout2] 우측 데이터 로드 완료: ${data.length}건`);
      } else {
        console.error("[SplitPanelLayout2] 우측 데이터 로드 실패:", response.data.message);
        setRightData([]);
      }
    } catch (error: any) {
      console.error("[SplitPanelLayout2] 우측 데이터 로드 에러:", {
        message: error?.message,
        status: error?.response?.status,
        statusText: error?.response?.statusText,
        data: error?.response?.data,
        config: {
          url: error?.config?.url,
          method: error?.config?.method,
          data: error?.config?.data,
        }
      });
      setRightData([]);
    } finally {
      setRightLoading(false);
    }
  }, [config.rightPanel?.tableName, config.joinConfig]);

  // 좌측 패널 추가 버튼 클릭
  const handleLeftAddClick = useCallback(() => {
    if (!config.leftPanel?.addModalScreenId) {
      toast.error("연결된 모달 화면이 없습니다.");
      return;
    }
    
    // EditModal 열기 이벤트 발생
    const event = new CustomEvent("openEditModal", {
      detail: {
        screenId: config.leftPanel.addModalScreenId,
        title: config.leftPanel?.addButtonLabel || "추가",
        modalSize: "lg",
        editData: {},
        isCreateMode: true, // 생성 모드
        onSave: () => {
          loadLeftData();
        },
      },
    });
    window.dispatchEvent(event);
    console.log("[SplitPanelLayout2] 좌측 추가 모달 열기:", config.leftPanel.addModalScreenId);
  }, [config.leftPanel?.addModalScreenId, config.leftPanel?.addButtonLabel, loadLeftData]);

  // 우측 패널 추가 버튼 클릭
  const handleRightAddClick = useCallback(() => {
    if (!config.rightPanel?.addModalScreenId) {
      toast.error("연결된 모달 화면이 없습니다.");
      return;
    }

    // 데이터 전달 필드 설정
    const initialData: Record<string, any> = {};
    if (selectedLeftItem && config.dataTransferFields) {
      for (const field of config.dataTransferFields) {
        if (field.sourceColumn && field.targetColumn) {
          initialData[field.targetColumn] = selectedLeftItem[field.sourceColumn];
        }
      }
    }

    console.log("[SplitPanelLayout2] 모달로 전달할 데이터:", initialData);
    console.log("[SplitPanelLayout2] 모달 screenId:", config.rightPanel?.addModalScreenId);

    // EditModal 열기 이벤트 발생
    const event = new CustomEvent("openEditModal", {
      detail: {
        screenId: config.rightPanel.addModalScreenId,
        title: config.rightPanel?.addButtonLabel || "추가",
        modalSize: "lg",
        editData: initialData,
        isCreateMode: true, // 생성 모드
        onSave: () => {
          if (selectedLeftItem) {
            loadRightData(selectedLeftItem);
          }
        },
      },
    });
    window.dispatchEvent(event);
    console.log("[SplitPanelLayout2] 우측 추가 모달 열기");
  }, [config.rightPanel?.addModalScreenId, config.rightPanel?.addButtonLabel, config.dataTransferFields, selectedLeftItem, loadRightData]);

  // 컬럼 라벨 로드
  const loadColumnLabels = useCallback(async (tableName: string, setLabels: (labels: Record<string, string>) => void) => {
    if (!tableName) return;

    try {
      const response = await apiClient.get(`/table-management/tables/${tableName}/columns`);
      if (response.data.success) {
        const labels: Record<string, string> = {};
        // API 응답 구조: { success: true, data: { columns: [...] } }
        const columns = response.data.data?.columns || [];
        columns.forEach((col: any) => {
          const colName = col.column_name || col.columnName;
          const colLabel = col.column_label || col.columnLabel || colName;
          if (colName) {
            labels[colName] = colLabel;
          }
        });
        setLabels(labels);
      }
    } catch (error) {
      console.error("[SplitPanelLayout2] 컬럼 라벨 로드 실패:", error);
    }
  }, []);

  // 계층 구조 빌드
  const buildHierarchy = (data: any[], idColumn: string, parentColumn: string): any[] => {
    const itemMap = new Map<string, any>();
    const roots: any[] = [];

    // 모든 항목을 맵에 저장
    data.forEach((item) => {
      itemMap.set(item[idColumn], { ...item, children: [] });
    });

    // 부모-자식 관계 설정
    data.forEach((item) => {
      const current = itemMap.get(item[idColumn]);
      const parentId = item[parentColumn];

      if (parentId && itemMap.has(parentId)) {
        itemMap.get(parentId).children.push(current);
      } else {
        roots.push(current);
      }
    });

    return roots;
  };

  // 좌측 항목 선택 핸들러
  const handleLeftItemSelect = useCallback((item: any) => {
    setSelectedLeftItem(item);
    loadRightData(item);

    // ScreenContext DataProvider 등록 (버튼에서 접근 가능하도록)
    if (screenContext && !isDesignMode) {
      screenContext.registerDataProvider(component.id, {
        componentId: component.id,
        componentType: "split-panel-layout2",
        getSelectedData: () => [item],
        getAllData: () => leftData,
        clearSelection: () => setSelectedLeftItem(null),
      });
      console.log(`[SplitPanelLayout2] DataProvider 등록: ${component.id}`);
    }
  }, [isDesignMode, screenContext, component.id, leftData, loadRightData]);

  // 항목 확장/축소 토글
  const toggleExpand = useCallback((itemId: string) => {
    setExpandedItems((prev) => {
      const newSet = new Set(prev);
      if (newSet.has(itemId)) {
        newSet.delete(itemId);
      } else {
        newSet.add(itemId);
      }
      return newSet;
    });
  }, []);

  // 검색 필터링
  const filteredLeftData = useMemo(() => {
    if (!leftSearchTerm) return leftData;

    const searchColumn = config.leftPanel?.searchColumn;
    if (!searchColumn) return leftData;

    const filterRecursive = (items: any[]): any[] => {
      return items.filter((item) => {
        const value = String(item[searchColumn] || "").toLowerCase();
        const matches = value.includes(leftSearchTerm.toLowerCase());

        if (item.children?.length > 0) {
          const filteredChildren = filterRecursive(item.children);
          if (filteredChildren.length > 0) {
            item.children = filteredChildren;
            return true;
          }
        }

        return matches;
      });
    };

    return filterRecursive([...leftData]);
  }, [leftData, leftSearchTerm, config.leftPanel?.searchColumn]);

  const filteredRightData = useMemo(() => {
    if (!rightSearchTerm) return rightData;

    const searchColumn = config.rightPanel?.searchColumn;
    if (!searchColumn) return rightData;

    return rightData.filter((item) => {
      const value = String(item[searchColumn] || "").toLowerCase();
      return value.includes(rightSearchTerm.toLowerCase());
    });
  }, [rightData, rightSearchTerm, config.rightPanel?.searchColumn]);

  // 리사이즈 핸들러
  const handleResizeStart = useCallback((e: React.MouseEvent) => {
    if (!config.resizable) return;
    e.preventDefault();
    setIsResizing(true);
  }, [config.resizable]);

  const handleResizeMove = useCallback((e: MouseEvent) => {
    if (!isResizing) return;

    const container = document.getElementById(`split-panel-${component.id}`);
    if (!container) return;

    const rect = container.getBoundingClientRect();
    const newPosition = ((e.clientX - rect.left) / rect.width) * 100;
    const minLeft = (config.minLeftWidth || 200) / rect.width * 100;
    const minRight = (config.minRightWidth || 300) / rect.width * 100;

    setSplitPosition(Math.max(minLeft, Math.min(100 - minRight, newPosition)));
  }, [isResizing, component.id, config.minLeftWidth, config.minRightWidth]);

  const handleResizeEnd = useCallback(() => {
    setIsResizing(false);
  }, []);

  // 리사이즈 이벤트 리스너
  useEffect(() => {
    if (isResizing) {
      window.addEventListener("mousemove", handleResizeMove);
      window.addEventListener("mouseup", handleResizeEnd);
    }
    return () => {
      window.removeEventListener("mousemove", handleResizeMove);
      window.removeEventListener("mouseup", handleResizeEnd);
    };
  }, [isResizing, handleResizeMove, handleResizeEnd]);

  // 초기 데이터 로드
  useEffect(() => {
    if (config.autoLoad && !isDesignMode) {
      loadLeftData();
      loadColumnLabels(config.leftPanel?.tableName || "", setLeftColumnLabels);
      loadColumnLabels(config.rightPanel?.tableName || "", setRightColumnLabels);
    }
  }, [config.autoLoad, isDesignMode, loadLeftData, loadColumnLabels, config.leftPanel?.tableName, config.rightPanel?.tableName]);

  // 컴포넌트 언마운트 시 DataProvider 해제
  useEffect(() => {
    return () => {
      if (screenContext) {
        screenContext.unregisterDataProvider(component.id);
      }
    };
  }, [screenContext, component.id]);

  // 값 포맷팅
  const formatValue = (value: any, format?: ColumnConfig["format"]): string => {
    if (value === null || value === undefined) return "-";
    if (!format) return String(value);

    switch (format.type) {
      case "number":
        const num = Number(value);
        if (isNaN(num)) return String(value);
        let formatted = format.decimalPlaces !== undefined
          ? num.toFixed(format.decimalPlaces)
          : String(num);
        if (format.thousandSeparator) {
          formatted = formatted.replace(/\B(?=(\d{3})+(?!\d))/g, ",");
        }
        return `${format.prefix || ""}${formatted}${format.suffix || ""}`;

      case "currency":
        const currency = Number(value);
        if (isNaN(currency)) return String(value);
        const currencyFormatted = currency.toLocaleString("ko-KR");
        return `${format.prefix || ""}${currencyFormatted}${format.suffix || "원"}`;

      case "date":
        try {
          const date = new Date(value);
          return date.toLocaleDateString("ko-KR");
        } catch {
          return String(value);
        }

      default:
        return String(value);
    }
  };

  // 좌측 패널 항목 렌더링
  const renderLeftItem = (item: any, level: number = 0, index: number = 0) => {
    const idColumn = config.leftPanel?.hierarchyConfig?.idColumn || "id";
    const itemId = item[idColumn] ?? `item-${level}-${index}`;
    const hasChildren = item.children?.length > 0;
    const isExpanded = expandedItems.has(String(itemId));
    const isSelected = selectedLeftItem && selectedLeftItem[idColumn] === item[idColumn];

    // 표시할 컬럼 결정
    const displayColumns = config.leftPanel?.displayColumns || [];
    const primaryColumn = displayColumns[0];
    const secondaryColumn = displayColumns[1];

    const primaryValue = primaryColumn
      ? item[primaryColumn.name]
      : Object.values(item).find((v) => typeof v === "string" && v.length > 0);
    const secondaryValue = secondaryColumn ? item[secondaryColumn.name] : null;

    return (
      <div key={itemId}>
        <div
          className={cn(
            "flex items-center gap-3 px-4 py-3 cursor-pointer rounded-md transition-colors",
            "hover:bg-accent",
            isSelected && "bg-primary/10 border-l-2 border-primary"
          )}
          style={{ paddingLeft: `${level * 16 + 16}px` }}
          onClick={() => handleLeftItemSelect(item)}
        >
          {/* 확장/축소 버튼 */}
          {hasChildren ? (
            <button
              className="p-0.5 hover:bg-accent rounded"
              onClick={(e) => {
                e.stopPropagation();
                toggleExpand(String(itemId));
              }}
            >
              {isExpanded ? (
                <ChevronDown className="h-4 w-4 text-muted-foreground" />
              ) : (
                <ChevronRight className="h-4 w-4 text-muted-foreground" />
              )}
            </button>
          ) : (
            <div className="w-5" />
          )}

          {/* 아이콘 */}
          <Building2 className="h-5 w-5 text-muted-foreground" />

          {/* 내용 */}
          <div className="flex-1 min-w-0">
            <div className="font-medium text-base truncate">
              {primaryValue || "이름 없음"}
            </div>
            {secondaryValue && (
              <div className="text-sm text-muted-foreground truncate">
                {secondaryValue}
              </div>
            )}
          </div>
        </div>

        {/* 자식 항목 */}
        {hasChildren && isExpanded && (
          <div>
            {item.children.map((child: any, childIndex: number) => renderLeftItem(child, level + 1, childIndex))}
          </div>
        )}
      </div>
    );
  };

  // 우측 패널 카드 렌더링
  const renderRightCard = (item: any, index: number) => {
    const displayColumns = config.rightPanel?.displayColumns || [];

    // 첫 번째 컬럼을 이름으로 사용
    const nameColumn = displayColumns[0];
    const name = nameColumn ? item[nameColumn.name] : "이름 없음";

    // 나머지 컬럼들
    const otherColumns = displayColumns.slice(1);

    return (
      <Card key={index} className="mb-3 hover:shadow-md transition-shadow">
        <CardContent className="p-4">
          <div className="flex items-start justify-between">
            <div className="flex-1">
              {/* 이름 */}
              <div className="flex items-center gap-2 mb-2">
                <span className="font-semibold text-lg">{name}</span>
                {otherColumns[0] && (
                  <span className="text-sm bg-muted px-2 py-0.5 rounded">
                    {item[otherColumns[0].name]}
                  </span>
                )}
              </div>

              {/* 상세 정보 */}
              <div className="flex flex-wrap gap-x-4 gap-y-1 text-base text-muted-foreground">
                {otherColumns.slice(1).map((col, idx) => {
                  const value = item[col.name];
                  if (!value) return null;

                  // 아이콘 결정
                  let icon = null;
                  const colName = col.name.toLowerCase();
                  if (colName.includes("tel") || colName.includes("phone")) {
                    icon = <span className="text-sm">tel</span>;
                  } else if (colName.includes("email")) {
                    icon = <span className="text-sm">@</span>;
                  } else if (colName.includes("sabun") || colName.includes("id")) {
                    icon = <span className="text-sm">ID</span>;
                  }

                  return (
                    <span key={idx} className="flex items-center gap-1">
                      {icon}
                      {formatValue(value, col.format)}
                    </span>
                  );
                })}
              </div>
            </div>

            {/* 액션 버튼 */}
            <div className="flex gap-1">
              {config.rightPanel?.showEditButton && (
                <Button variant="outline" size="sm" className="h-8">
                  수정
                </Button>
              )}
              {config.rightPanel?.showDeleteButton && (
                <Button variant="outline" size="sm" className="h-8">
                  삭제
                </Button>
              )}
            </div>
          </div>
        </CardContent>
      </Card>
    );
  };

  // 디자인 모드 렌더링
  if (isDesignMode) {
    return (
      <div
        className={cn(
          "w-full h-full border-2 border-dashed rounded-lg flex",
          isSelected ? "border-primary" : "border-muted-foreground/30"
        )}
        onClick={onClick}
      >
        {/* 좌측 패널 미리보기 */}
        <div
          className="border-r bg-muted/30 p-4 flex flex-col"
          style={{ width: `${splitPosition}%` }}
        >
          <div className="text-sm font-medium mb-2">
            {config.leftPanel?.title || "좌측 패널"}
          </div>
          <div className="text-xs text-muted-foreground mb-2">
            테이블: {config.leftPanel?.tableName || "미설정"}
          </div>
          <div className="flex-1 flex items-center justify-center text-muted-foreground text-xs">
            좌측 목록 영역
          </div>
        </div>

        {/* 우측 패널 미리보기 */}
        <div className="flex-1 p-4 flex flex-col">
          <div className="text-sm font-medium mb-2">
            {config.rightPanel?.title || "우측 패널"}
          </div>
          <div className="text-xs text-muted-foreground mb-2">
            테이블: {config.rightPanel?.tableName || "미설정"}
          </div>
          <div className="flex-1 flex items-center justify-center text-muted-foreground text-xs">
            우측 상세 영역
          </div>
        </div>
      </div>
    );
  }

  return (
    <div
      id={`split-panel-${component.id}`}
      className="w-full h-full flex bg-background rounded-lg border overflow-hidden"
      style={{ minHeight: "400px" }}
    >
      {/* 좌측 패널 */}
      <div
        className="flex flex-col border-r bg-card"
        style={{ width: `${splitPosition}%`, minWidth: config.minLeftWidth }}
      >
        {/* 헤더 */}
        <div className="p-4 border-b bg-muted/30">
          <div className="flex items-center justify-between mb-3">
            <h3 className="font-semibold text-base">{config.leftPanel?.title || "목록"}</h3>
            {config.leftPanel?.showAddButton && (
              <Button size="sm" variant="default" className="h-8 text-sm" onClick={handleLeftAddClick}>
                <Plus className="h-4 w-4 mr-1" />
                {config.leftPanel?.addButtonLabel || "추가"}
              </Button>
            )}
          </div>

          {/* 검색 */}
          {config.leftPanel?.showSearch && (
            <div className="relative">
              <Search className="absolute left-3 top-1/2 -translate-y-1/2 h-4 w-4 text-muted-foreground" />
              <Input
                placeholder="검색..."
                value={leftSearchTerm}
                onChange={(e) => setLeftSearchTerm(e.target.value)}
                className="pl-9 h-9 text-sm"
              />
            </div>
          )}
        </div>

        {/* 목록 */}
        <div className="flex-1 overflow-auto">
          {leftLoading ? (
            <div className="flex items-center justify-center h-full text-muted-foreground text-base">
              로딩 중...
            </div>
          ) : filteredLeftData.length === 0 ? (
            <div className="flex items-center justify-center h-full text-muted-foreground text-base">
              데이터가 없습니다
            </div>
          ) : (
            <div className="py-1">
              {filteredLeftData.map((item, index) => renderLeftItem(item, 0, index))}
            </div>
          )}
        </div>
      </div>

      {/* 리사이저 */}
      {config.resizable && (
        <div
          className={cn(
            "w-1 cursor-col-resize hover:bg-primary/50 transition-colors",
            isResizing && "bg-primary/50"
          )}
          onMouseDown={handleResizeStart}
        />
      )}

      {/* 우측 패널 */}
      <div className="flex-1 flex flex-col bg-card">
        {/* 헤더 */}
        <div className="p-4 border-b bg-muted/30">
          <div className="flex items-center justify-between mb-3">
            <h3 className="font-semibold text-base">
              {selectedLeftItem
                ? config.leftPanel?.displayColumns?.[0]
                  ? selectedLeftItem[config.leftPanel.displayColumns[0].name]
                  : config.rightPanel?.title || "상세"
                : config.rightPanel?.title || "상세"}
            </h3>
            <div className="flex items-center gap-2">
              {selectedLeftItem && (
                <span className="text-sm text-muted-foreground">
                  {rightData.length}명
                </span>
              )}
              {config.rightPanel?.showAddButton && selectedLeftItem && (
                <Button size="sm" variant="default" className="h-8 text-sm" onClick={handleRightAddClick}>
                  <Plus className="h-4 w-4 mr-1" />
                  {config.rightPanel?.addButtonLabel || "추가"}
                </Button>
              )}
            </div>
          </div>

          {/* 검색 */}
          {config.rightPanel?.showSearch && selectedLeftItem && (
            <div className="relative">
              <Search className="absolute left-3 top-1/2 -translate-y-1/2 h-4 w-4 text-muted-foreground" />
              <Input
                placeholder="검색..."
                value={rightSearchTerm}
                onChange={(e) => setRightSearchTerm(e.target.value)}
                className="pl-9 h-9 text-sm"
              />
            </div>
          )}
        </div>

        {/* 내용 */}
        <div className="flex-1 overflow-auto p-4">
          {!selectedLeftItem ? (
            <div className="flex flex-col items-center justify-center h-full text-muted-foreground">
              <Users className="h-16 w-16 mb-3 opacity-30" />
              <span className="text-base">{config.rightPanel?.emptyMessage || "좌측에서 항목을 선택해주세요"}</span>
            </div>
          ) : rightLoading ? (
            <div className="flex items-center justify-center h-full text-muted-foreground text-base">
              로딩 중...
            </div>
          ) : filteredRightData.length === 0 ? (
            <div className="flex flex-col items-center justify-center h-full text-muted-foreground">
              <Users className="h-16 w-16 mb-3 opacity-30" />
              <span className="text-base">등록된 항목이 없습니다</span>
            </div>
          ) : (
            <div>
              {filteredRightData.map((item, index) => renderRightCard(item, index))}
            </div>
          )}
        </div>
      </div>
    </div>
  );
};

/**
 * SplitPanelLayout2 래퍼 컴포넌트
 */
export const SplitPanelLayout2Wrapper: React.FC<SplitPanelLayout2ComponentProps> = (props) => {
  return <SplitPanelLayout2Component {...props} />;
};