"use client";

import React, { useState, useEffect } from "react";
import { ComponentData, WebType, isWidgetComponent, isContainerComponent } from "@/types";
import { isFileComponent } from "@/lib/utils/componentTypeUtils";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/components/ui/table";
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import { Separator } from "@/components/ui/separator";
import { FileUpload } from "./widgets/FileUpload";
import { useAuth } from "@/hooks/useAuth";
import { DynamicWebTypeRenderer, WebTypeRegistry } from "@/lib/registry";
import { DataTableTemplate } from "@/components/screen/templates/DataTableTemplate";
import {
  Database,
  Type,
  Hash,
  List,
  AlignLeft,
  CheckSquare,
  Radio,
  Calendar,
  Code,
  Building,
  File,
  Group,
  ChevronDown,
  ChevronRight,
  Search,
  RotateCcw,
  Plus,
  Edit,
  Trash2,
  Upload,
  Square,
  CreditCard,
  Layout,
  Grid3x3,
  Columns,
  Rows,
  SidebarOpen,
  Folder,
  ChevronUp,
  Image as ImageIcon,
  FileText,
  Video,
  Music,
  Archive,
  Presentation,
} from "lucide-react";

interface RealtimePreviewProps {
  component: ComponentData;
  isSelected?: boolean;
  isDesignMode?: boolean;
  onClick?: (e?: React.MouseEvent) => void;
  onDragStart?: (e: React.DragEvent) => void;
  onDragEnd?: () => void;
  onGroupToggle?: (groupId: string) => void; // 그룹 접기/펼치기
  children?: React.ReactNode; // 그룹 내 자식 컴포넌트들
  // 플로우 선택 데이터 전달용
  onFlowSelectedDataChange?: (selectedData: any[], stepId: number | null) => void;
}

// 영역 레이아웃에 따른 아이콘 반환
const getAreaIcon = (layoutDirection?: "horizontal" | "vertical") => {
  switch (layoutDirection) {
    case "horizontal":
      return <Layout className="text-primary h-4 w-4" />;
    case "vertical":
      return <Columns className="h-4 w-4 text-purple-600" />;
    default:
      return <Square className="h-4 w-4 text-gray-500" />;
  }
};

// 영역 렌더링
const renderArea = (component: ComponentData, children?: React.ReactNode) => {
  if (!isContainerComponent(component) || component.type !== "area") {
    return null;
  }
  const area = component;
  const { layoutDirection, label } = area;

  const renderPlaceholder = () => (
    <div className="flex h-full w-full items-center justify-center rounded border-2 border-dashed border-gray-300 bg-gray-50">
      <div className="text-center">
        {getAreaIcon(layoutDirection)}
        <p className="text-muted-foreground mt-2 text-sm">{label || `${layoutDirection || "기본"} 영역`}</p>
        <p className="text-xs text-gray-400">컴포넌트를 드래그해서 추가하세요</p>
      </div>
    </div>
  );

  return (
    <div className="relative h-full w-full">
      <div className="absolute inset-0 h-full w-full">
        {children && React.Children.count(children) > 0 ? children : renderPlaceholder()}
      </div>
    </div>
  );
};

// 동적 웹 타입 위젯 렌더링 컴포넌트
const WidgetRenderer: React.FC<{ component: ComponentData; isDesignMode?: boolean }> = ({ component, isDesignMode = false }) => {
  // 위젯 컴포넌트가 아닌 경우 빈 div 반환
  if (!isWidgetComponent(component)) {
    return <div className="text-xs text-gray-500">위젯이 아닙니다</div>;
  }

  const widget = component;
  const { widgetType, label, placeholder, required, readonly, columnName, style } = widget;

  // 디버깅: 실제 widgetType 값 확인
  // console.log("RealtimePreviewDynamic - widgetType:", widgetType, "columnName:", columnName);

  // 사용자가 테두리를 설정했는지 확인
  const hasCustomBorder = style && (style.borderWidth || style.borderStyle || style.borderColor || style.border);

  // 기본 테두리 제거 여부 결정 - Shadcn UI 기본 border 클래스를 덮어쓰기
  const borderClass = hasCustomBorder ? "!border-0" : "";

  const commonProps = {
    placeholder: placeholder || "입력하세요...",
    disabled: readonly,
    required: required,
    className: `w-full h-full ${borderClass}`,
  };

  // 파일 컴포넌트는 별도 로직에서 처리하므로 여기서는 제외
  if (isFileComponent(widget)) {
    // console.log("🎯 RealtimePreview - 파일 컴포넌트 감지 (별도 처리):", {
    // componentId: widget.id,
    // widgetType: widgetType,
    // isFileComponent: true
    // });

    return <div className="p-2 text-xs text-gray-500">파일 컴포넌트 (별도 렌더링)</div>;
  }

  // 동적 웹타입 렌더링 사용
  if (widgetType) {
    try {
      return (
        <DynamicWebTypeRenderer
          webType={widgetType}
          props={{
            ...commonProps,
            component: widget,
            value: undefined, // 미리보기이므로 값은 없음
            readonly: readonly,
            isDesignMode,
            isInteractive: !isDesignMode,
          }}
          config={widget.webTypeConfig}
        />
      );
    } catch (error) {
      // console.error(`웹타입 "${widgetType}" 렌더링 실패:`, error);
      // 오류 발생 시 폴백으로 기본 input 렌더링
      return <Input type="text" {...commonProps} placeholder={`${widgetType} (렌더링 오류)`} />;
    }
  }

  // 웹타입이 없는 경우 기본 input 렌더링 (하위 호환성)
  return <Input type="text" {...commonProps} />;
};

// 동적 위젯 타입 아이콘 (레지스트리에서 조회)
const getWidgetIcon = (widgetType: WebType | undefined) => {
  if (!widgetType) {
    return <Type className="h-4 w-4 text-gray-500" />;
  }

  // 레지스트리에서 웹타입 정의 조회
  const webTypeDefinition = WebTypeRegistry.getWebType(widgetType);
  if (webTypeDefinition && webTypeDefinition.icon) {
    const IconComponent = webTypeDefinition.icon;
    return <IconComponent className="h-4 w-4" />;
  }

  // 기본 아이콘 매핑 (하위 호환성)
  switch (widgetType) {
    case "text":
    case "email":
    case "tel":
      return <Type className="text-primary h-4 w-4" />;
    case "number":
    case "decimal":
      return <Hash className="h-4 w-4 text-green-600" />;
    case "date":
    case "datetime":
      return <Calendar className="h-4 w-4 text-purple-600" />;
    case "select":
    case "dropdown":
      return <List className="h-4 w-4 text-orange-600" />;
    case "textarea":
      return <AlignLeft className="h-4 w-4 text-indigo-600" />;
    case "boolean":
    case "checkbox":
      return <CheckSquare className="text-primary h-4 w-4" />;
    case "radio":
      return <Radio className="text-primary h-4 w-4" />;
    case "code":
      return <Code className="text-muted-foreground h-4 w-4" />;
    case "entity":
      return <Building className="h-4 w-4 text-cyan-600" />;
    case "file":
      return <File className="h-4 w-4 text-yellow-600" />;
    default:
      return <Type className="h-4 w-4 text-gray-500" />;
  }
};

export const RealtimePreviewDynamic: React.FC<RealtimePreviewProps> = ({
  component,
  isSelected = false,
  isDesignMode = false,
  onClick,
  onDragStart,
  onDragEnd,
  onGroupToggle,
  children,
  onFlowSelectedDataChange,
}) => {
  const { user } = useAuth();
  const { type, id, position, size, style = {} } = component;
  const [fileUpdateTrigger, setFileUpdateTrigger] = useState(0);
  const [actualHeight, setActualHeight] = useState<number | null>(null);
  const contentRef = React.useRef<HTMLDivElement>(null);

  // 플로우 위젯의 실제 높이 측정
  useEffect(() => {
    const isFlowWidget = type === "flow" || (type === "component" && (component as any).componentConfig?.type === "flow-widget");
    
    if (isFlowWidget && contentRef.current) {
      const measureHeight = () => {
        if (contentRef.current) {
          // getBoundingClientRect()로 실제 렌더링된 높이 측정
          const rect = contentRef.current.getBoundingClientRect();
          const measured = rect.height;
          
          // scrollHeight도 함께 확인하여 더 큰 값 사용
          const scrollHeight = contentRef.current.scrollHeight;
          const rawHeight = Math.max(measured, scrollHeight);
          
          // 40px 단위로 올림
          const finalHeight = Math.ceil(rawHeight / 40) * 40;
          
          if (finalHeight > 0 && Math.abs(finalHeight - (actualHeight || 0)) > 10) {
            setActualHeight(finalHeight);
          }
        }
      };

      // 초기 측정 (렌더링 완료 후)
      const initialTimer = setTimeout(() => {
        measureHeight();
      }, 100);

      // 추가 측정 (데이터 로딩 완료 대기)
      const delayedTimer = setTimeout(() => {
        measureHeight();
      }, 500);

      // 스텝 클릭 등으로 높이가 변경될 때를 위한 추가 측정
      const extendedTimer = setTimeout(() => {
        measureHeight();
      }, 1000);

      // ResizeObserver로 크기 변화 감지 (스텝 클릭 시 데이터 테이블 펼쳐짐)
      const resizeObserver = new ResizeObserver(() => {
        // 약간의 지연을 두고 측정 (DOM 업데이트 완료 대기)
        setTimeout(() => {
          measureHeight();
        }, 100);
      });

      resizeObserver.observe(contentRef.current);

      return () => {
        clearTimeout(initialTimer);
        clearTimeout(delayedTimer);
        clearTimeout(extendedTimer);
        resizeObserver.disconnect();
      };
    }
  }, [type, id]);

  // 전역 파일 상태 변경 감지 (해당 컴포넌트만)
  useEffect(() => {
    const handleGlobalFileStateChange = (event: CustomEvent) => {
      // console.log("🎯🎯🎯 RealtimePreview 이벤트 수신:", {
      // eventComponentId: event.detail.componentId,
      // currentComponentId: component.id,
      // isMatch: event.detail.componentId === component.id,
      // filesCount: event.detail.files?.length || 0,
      // action: event.detail.action,
      // delayed: event.detail.delayed || false,
      // attempt: event.detail.attempt || 1,
      // eventDetail: event.detail
      // });

      if (event.detail.componentId === component.id) {
        // console.log("✅✅✅ RealtimePreview 파일 상태 변경 감지 - 리렌더링 시작:", {
        // componentId: component.id,
        // filesCount: event.detail.files?.length || 0,
        // action: event.detail.action,
        // oldTrigger: fileUpdateTrigger,
        // delayed: event.detail.delayed || false,
        // attempt: event.detail.attempt || 1
        // });
        setFileUpdateTrigger((prev) => {
          const newTrigger = prev + 1;
          // console.log("🔄🔄🔄 fileUpdateTrigger 업데이트:", {
          // old: prev,
          // new: newTrigger,
          // componentId: component.id,
          // attempt: event.detail.attempt || 1
          // });
          return newTrigger;
        });
      } else {
        // console.log("❌ 컴포넌트 ID 불일치:", {
        // eventComponentId: event.detail.componentId,
        // currentComponentId: component.id
        // });
      }
    };

    // 강제 업데이트 함수 등록
    const forceUpdate = (componentId: string, files: any[]) => {
      // console.log("🔥🔥🔥 RealtimePreview 강제 업데이트 호출:", {
      // targetComponentId: componentId,
      // currentComponentId: component.id,
      // isMatch: componentId === component.id,
      // filesCount: files.length
      // });

      if (componentId === component.id) {
        // console.log("✅✅✅ RealtimePreview 강제 업데이트 적용:", {
        // componentId: component.id,
        // filesCount: files.length,
        // oldTrigger: fileUpdateTrigger
        // });
        setFileUpdateTrigger((prev) => {
          const newTrigger = prev + 1;
          // console.log("🔄🔄🔄 강제 fileUpdateTrigger 업데이트:", {
          // old: prev,
          // new: newTrigger,
          // componentId: component.id
          // });
          return newTrigger;
        });
      }
    };

    if (typeof window !== "undefined") {
      try {
        window.addEventListener("globalFileStateChanged", handleGlobalFileStateChange as EventListener);

        // 전역 강제 업데이트 함수 등록
        if (!(window as any).forceRealtimePreviewUpdate) {
          (window as any).forceRealtimePreviewUpdate = forceUpdate;
        }
      } catch (error) {
        // console.warn("RealtimePreview 이벤트 리스너 등록 실패:", error);
      }

      return () => {
        try {
          window.removeEventListener("globalFileStateChanged", handleGlobalFileStateChange as EventListener);
        } catch (error) {
          // console.warn("RealtimePreview 이벤트 리스너 제거 실패:", error);
        }
      };
    }
  }, [component.id, fileUpdateTrigger]);

  // 컴포넌트 스타일 계산
  const isFlowWidget = type === "flow" || (type === "component" && (component as any).componentConfig?.type === "flow-widget");
  
  // 높이 결정 로직
  let finalHeight = size?.height || 40;
  if (isFlowWidget && actualHeight) {
    finalHeight = actualHeight;
  }
  
  // 🔍 디버깅: position.x 값 확인
  const positionX = position?.x || 0;
  console.log("🔍 RealtimePreview componentStyle 설정:", {
    componentId: id,
    positionX,
    sizeWidth: size?.width,
    styleWidth: style?.width,
    willUse100Percent: positionX === 0,
  });

  // 너비 결정 로직: style.width (퍼센트) > 조건부 100% > size.width (픽셀)
  const getWidth = () => {
    // 1순위: style.width가 있으면 우선 사용 (퍼센트 값)
    if (style?.width) {
      return style.width;
    }
    // 2순위: left가 0이면 100%
    if (positionX === 0) {
      return "100%";
    }
    // 3순위: size.width 픽셀 값
    return size?.width || 200;
  };

  const componentStyle = {
    position: "absolute" as const,
    ...style, // 먼저 적용하고
    left: positionX,
    top: position?.y || 0,
    width: getWidth(), // 우선순위에 따른 너비
    height: finalHeight,
    zIndex: position?.z || 1,
    // right 속성 강제 제거
    right: undefined,
  };

  // 선택된 컴포넌트 스타일
  const selectionStyle = isSelected
    ? {
        outline: "2px solid rgb(59, 130, 246)",
        outlineOffset: "2px",
      }
    : {};

  const handleClick = (e: React.MouseEvent) => {
    // 컴포넌트 영역 내에서만 클릭 이벤트 처리
    e.stopPropagation();
    onClick?.(e);
  };

  const handleDragStart = (e: React.DragEvent) => {
    e.stopPropagation();
    onDragStart?.(e);
  };

  const handleDragEnd = () => {
    onDragEnd?.();
  };

  return (
    <div
      id={`component-${id}`}
      className="absolute cursor-pointer"
      style={{ ...componentStyle, ...selectionStyle }}
      onClick={handleClick}
      draggable
      onDragStart={handleDragStart}
      onDragEnd={handleDragEnd}
    >
      {/* 컴포넌트 타입별 렌더링 */}
      <div 
        ref={isFlowWidget ? contentRef : undefined}
        className="h-full w-full"
      >
        {/* 영역 타입 */}
        {type === "area" && renderArea(component, children)}

        {/* 데이터 테이블 타입 */}
        {type === "datatable" &&
          (() => {
            const dataTableComponent = component as any; // DataTableComponent 타입

            return (
              <DataTableTemplate
                title={dataTableComponent.title || dataTableComponent.label}
                description={`${dataTableComponent.label}을 표시하는 데이터 테이블`}
                columns={dataTableComponent.columns}
                filters={dataTableComponent.filters}
                pagination={dataTableComponent.pagination}
                actions={
                  dataTableComponent.actions || {
                    showSearchButton: dataTableComponent.showSearchButton ?? true,
                    searchButtonText: dataTableComponent.searchButtonText || "검색",
                    enableExport: dataTableComponent.enableExport ?? true,
                    enableRefresh: dataTableComponent.enableRefresh ?? true,
                    enableAdd: dataTableComponent.enableAdd ?? true,
                    enableEdit: dataTableComponent.enableEdit ?? true,
                    enableDelete: dataTableComponent.enableDelete ?? true,
                    addButtonText: dataTableComponent.addButtonText || "추가",
                    editButtonText: dataTableComponent.editButtonText || "수정",
                    deleteButtonText: dataTableComponent.deleteButtonText || "삭제",
                  }
                }
                style={component.style}
                className="h-full w-full"
                isPreview={true}
              />
            );
          })()}

        {/* 플로우 위젯 타입 */}
        {(type === "flow" || (type === "component" && (component as any).componentConfig?.type === "flow-widget")) &&
          (() => {
            const FlowWidget = require("@/components/screen/widgets/FlowWidget").FlowWidget;
            // componentConfig에서 flowId 추출
            const flowConfig = (component as any).componentConfig || {};

            console.log("🔍 RealtimePreview 플로우 위젯 변환:", {
              compType: component.type,
              hasComponentConfig: !!(component as any).componentConfig,
              flowConfig,
              flowConfigFlowId: flowConfig.flowId,
            });

            const flowComponent = {
              ...component,
              type: "flow" as const,
              flowId: flowConfig.flowId,
              flowName: flowConfig.flowName,
              showStepCount: flowConfig.showStepCount !== false,
              allowDataMove: flowConfig.allowDataMove || false,
              displayMode: flowConfig.displayMode || "horizontal",
            };

            console.log("🔍 RealtimePreview 최종 flowComponent:", flowComponent);

            return (
              <div className="h-auto w-full">
                <FlowWidget 
                  component={flowComponent as any} 
                  onSelectedDataChange={onFlowSelectedDataChange}
                />
              </div>
            );
          })()}

        {/* 그룹 타입 */}
        {type === "group" && (
          <div className="relative h-full w-full">
            <div className="absolute inset-0">{children}</div>
          </div>
        )}

        {/* 위젯 타입 - 동적 렌더링 (파일 컴포넌트 제외) */}
        {type === "widget" && !isFileComponent(component) && (
          <div className="pointer-events-none h-full w-full">
            <WidgetRenderer component={component} isDesignMode={isDesignMode} />
          </div>
        )}

        {/* 파일 타입 - 레거시 및 신규 타입 지원 */}
        {isFileComponent(component) &&
          (() => {
            const fileComponent = component as any;
            const uploadedFiles = fileComponent.uploadedFiles || [];

            // 전역 상태에서 최신 파일 정보 가져오기
            const globalFileState = typeof window !== "undefined" ? (window as any).globalFileState || {} : {};
            const globalFiles = globalFileState[component.id] || [];

            // 최신 파일 정보 사용 (전역 상태 > 컴포넌트 속성)
            const currentFiles = globalFiles.length > 0 ? globalFiles : uploadedFiles;

            // console.log("🔍 RealtimePreview 파일 컴포넌트 렌더링:", {
            // componentId: component.id,
            // uploadedFilesCount: uploadedFiles.length,
            // globalFilesCount: globalFiles.length,
            // currentFilesCount: currentFiles.length,
            // currentFiles: currentFiles.map((f: any) => ({ objid: f.objid, name: f.realFileName || f.name })),
            // componentType: component.type,
            // fileUpdateTrigger: fileUpdateTrigger,
            // timestamp: new Date().toISOString()
            // });

            return (
              <div key={`file-component-${component.id}-${fileUpdateTrigger}`} className="flex h-full flex-col">
                <div className="pointer-events-none flex-1 rounded border-2 border-dashed border-gray-300 bg-gray-50 p-2">
                  {currentFiles.length > 0 ? (
                    <div className="h-full overflow-y-auto">
                      <div className="mb-1 text-xs font-medium text-gray-700">
                        업로드된 파일 ({currentFiles.length})
                      </div>
                      <div className="space-y-1">
                        {currentFiles.map((file: any, index: number) => {
                          // 파일 확장자에 따른 아이콘 선택
                          const getFileIcon = (fileName: string) => {
                            const ext = fileName.split(".").pop()?.toLowerCase() || "";
                            if (["jpg", "jpeg", "png", "gif", "webp", "svg"].includes(ext)) {
                              return <ImageIcon className="h-4 w-4 flex-shrink-0 text-green-500" />;
                            }
                            if (["pdf", "doc", "docx", "txt", "rtf", "hwp", "hwpx", "hwpml", "pages"].includes(ext)) {
                              return <FileText className="h-4 w-4 flex-shrink-0 text-red-500" />;
                            }
                            if (["ppt", "pptx", "hpt", "keynote"].includes(ext)) {
                              return <Presentation className="h-4 w-4 flex-shrink-0 text-orange-600" />;
                            }
                            if (["xls", "xlsx", "hcdt", "numbers"].includes(ext)) {
                              return <FileText className="h-4 w-4 flex-shrink-0 text-green-600" />;
                            }
                            if (["mp4", "avi", "mov", "wmv", "webm", "ogg"].includes(ext)) {
                              return <Video className="h-4 w-4 flex-shrink-0 text-purple-500" />;
                            }
                            if (["mp3", "wav", "flac", "aac"].includes(ext)) {
                              return <Music className="h-4 w-4 flex-shrink-0 text-orange-500" />;
                            }
                            if (["zip", "rar", "7z", "tar"].includes(ext)) {
                              return <Archive className="h-4 w-4 flex-shrink-0 text-yellow-500" />;
                            }
                            return <File className="h-4 w-4 flex-shrink-0 text-blue-500" />;
                          };

                          return (
                            <div
                              key={file.objid || index}
                              className="flex items-center space-x-2 rounded bg-white p-2 text-xs"
                            >
                              {getFileIcon(file.realFileName || file.name || "")}
                              <div className="min-w-0 flex-1">
                                <p className="truncate font-medium text-gray-900">
                                  {file.realFileName || file.name || `파일 ${index + 1}`}
                                </p>
                                <p className="text-gray-500">
                                  {file.fileSize ? `${Math.round(file.fileSize / 1024)} KB` : ""}
                                </p>
                              </div>
                            </div>
                          );
                        })}
                      </div>
                    </div>
                  ) : (
                    <div className="flex h-full flex-col items-center justify-center text-center">
                      <File className="mb-2 h-8 w-8 text-gray-400" />
                      <p className="mb-1 text-xs font-medium text-gray-700">업로드된 파일 (0)</p>
                      <p className="text-muted-foreground text-sm">파일 업로드 영역</p>
                      <p className="mt-1 text-xs text-gray-400">상세설정에서 파일을 업로드하세요</p>
                    </div>
                  )}
                </div>
              </div>
            );
          })()}
      </div>

      {/* 선택된 컴포넌트 정보 표시 */}
      {isSelected && (
        <div className="absolute -top-6 left-0 rounded bg-blue-600 px-2 py-1 text-xs text-white">
          {type === "widget" && (
            <div className="flex items-center gap-1">
              {getWidgetIcon(isWidgetComponent(component) ? (component.widgetType as WebType) : undefined)}
              {isWidgetComponent(component) ? component.widgetType || "widget" : component.type}
            </div>
          )}
          {type !== "widget" && type}
        </div>
      )}
    </div>
  );
};

// 기존 RealtimePreview와의 호환성을 위한 export
export { RealtimePreviewDynamic as RealtimePreview };

RealtimePreviewDynamic.displayName = "RealtimePreviewDynamic";