"use client";

import React from "react";
import { ComponentData } from "@/types/screen";
import { DynamicLayoutRenderer } from "./DynamicLayoutRenderer";

// 컴포넌트 렌더러 인터페이스
export interface ComponentRenderer {
  (props: {
    component: ComponentData;
    isSelected?: boolean;
    isInteractive?: boolean;
    formData?: Record<string, any>;
    onFormDataChange?: (fieldName: string, value: any) => void;
    onClick?: (e?: React.MouseEvent) => void;
    onDragStart?: (e: React.DragEvent) => void;
    onDragEnd?: () => void;
    children?: React.ReactNode;
    [key: string]: any;
  }): React.ReactElement;
}

// 컴포넌트 레지스트리
class ComponentRegistry {
  private renderers: Map<string, ComponentRenderer> = new Map();

  // 컴포넌트 렌더러 등록
  register(componentType: string, renderer: ComponentRenderer) {
    this.renderers.set(componentType, renderer);
    console.log(`🔧 컴포넌트 렌더러 등록: ${componentType}`);
  }

  // 컴포넌트 렌더러 조회
  get(componentType: string): ComponentRenderer | undefined {
    return this.renderers.get(componentType);
  }

  // 등록된 모든 컴포넌트 타입 조회
  getRegisteredTypes(): string[] {
    return Array.from(this.renderers.keys());
  }

  // 컴포넌트 타입이 등록되어 있는지 확인
  has(componentType: string): boolean {
    const result = this.renderers.has(componentType);
    console.log(`🔍 ComponentRegistry.has("${componentType}"):`, {
      result,
      availableKeys: Array.from(this.renderers.keys()),
      mapSize: this.renderers.size,
    });
    return result;
  }
}

// 전역 컴포넌트 레지스트리 인스턴스
export const componentRegistry = new ComponentRegistry();

// 동적 컴포넌트 렌더러 컴포넌트
export interface DynamicComponentRendererProps {
  component: ComponentData;
  isSelected?: boolean;
  onClick?: (e?: React.MouseEvent) => void;
  onDragStart?: (e: React.DragEvent) => void;
  onDragEnd?: () => void;
  children?: React.ReactNode;
  [key: string]: any;
}

export const DynamicComponentRenderer: React.FC<DynamicComponentRendererProps> = ({
  component,
  isSelected = false,
  onClick,
  onDragStart,
  onDragEnd,
  children,
  ...props
}) => {
  // component_config에서 실제 컴포넌트 타입 추출
  const componentType = component.componentConfig?.type || component.type;

  // 레이아웃 컴포넌트 처리
  if (componentType === "layout") {
    return (
      <DynamicLayoutRenderer
        layout={component as any}
        allComponents={props.allComponents || []}
        isSelected={isSelected}
        onClick={onClick}
        onDragStart={onDragStart}
        onDragEnd={onDragEnd}
        {...props}
      />
    );
  }

  console.log("🎯 DynamicComponentRenderer:", {
    componentId: component.id,
    componentType,
    componentConfig: component.componentConfig,
    registeredTypes: componentRegistry.getRegisteredTypes(),
    hasRenderer: componentRegistry.has(componentType),
    actualRenderer: componentRegistry.get(componentType),
    mapSize: componentRegistry.getRegisteredTypes().length,
  });

  // 등록된 렌더러 조회
  const renderer = componentRegistry.get(componentType);

  if (!renderer) {
    console.warn(`⚠️ 등록되지 않은 컴포넌트 타입: ${componentType}`);

    // 폴백 렌더링 - 기본 플레이스홀더
    return (
      <div className="flex h-full w-full items-center justify-center rounded border-2 border-dashed border-gray-300 bg-gray-50 p-4">
        <div className="text-center">
          <div className="mb-2 text-sm font-medium text-gray-600">{component.label || component.id}</div>
          <div className="text-xs text-gray-400">미구현 컴포넌트: {componentType}</div>
        </div>
      </div>
    );
  }

  // 동적 렌더링 실행
  try {
    return renderer({
      component,
      isSelected,
      onClick,
      onDragStart,
      onDragEnd,
      children,
      ...props,
    });
  } catch (error) {
    console.error(`❌ 컴포넌트 렌더링 실패 (${componentType}):`, error);

    // 오류 발생 시 폴백 렌더링
    return (
      <div className="flex h-full w-full items-center justify-center rounded border-2 border-red-300 bg-red-50 p-4">
        <div className="text-center">
          <div className="mb-2 text-sm font-medium text-red-600">렌더링 오류</div>
          <div className="text-xs text-red-400">
            {componentType}: {error instanceof Error ? error.message : "알 수 없는 오류"}
          </div>
        </div>
      </div>
    );
  }
};

export default DynamicComponentRenderer;