"use client";

import { useState, useEffect } from "react";
import { Button } from "@/components/ui/button";
import { Dialog, DialogContent, DialogHeader, DialogTitle } from "@/components/ui/dialog";
import { Plus, Check, Trash2 } from "lucide-react";
import YardLayoutCreateModal from "./yard-3d/YardLayoutCreateModal";
import DigitalTwinEditor from "./yard-3d/DigitalTwinEditor";
import DigitalTwinViewer from "./yard-3d/DigitalTwinViewer";
import { yardLayoutApi } from "@/lib/api/yardLayoutApi";
import type { YardManagementConfig } from "../types";

interface YardLayout {
  id: number;
  name: string;
  description: string;
  placement_count: number;
  created_at: string;
  updated_at: string;
}

interface YardManagement3DWidgetProps {
  isEditMode?: boolean;
  config?: YardManagementConfig;
  onConfigChange?: (config: YardManagementConfig) => void;
}

export default function YardManagement3DWidget({
  isEditMode = false,
  config,
  onConfigChange,
}: YardManagement3DWidgetProps) {
  const [layouts, setLayouts] = useState<YardLayout[]>([]);
  const [isLoading, setIsLoading] = useState(true);
  const [isCreateModalOpen, setIsCreateModalOpen] = useState(false);
  const [editingLayout, setEditingLayout] = useState<YardLayout | null>(null);
  const [deleteLayoutId, setDeleteLayoutId] = useState<number | null>(null);

  // 레이아웃 목록 로드
  const loadLayouts = async () => {
    try {
      setIsLoading(true);
      const response = await yardLayoutApi.getAllLayouts();
      if (response.success) {
        setLayouts(response.data as YardLayout[]);
      }
    } catch (error) {
      console.error("야드 레이아웃 목록 조회 실패:", error);
    } finally {
      setIsLoading(false);
    }
  };

  useEffect(() => {
    if (isEditMode) {
      loadLayouts();
    }
  }, [isEditMode]);

  // 레이아웃 목록이 로드되었고, 설정이 없으면 첫 번째 레이아웃 자동 선택
  useEffect(() => {
    if (isEditMode && layouts.length > 0 && !config?.layoutId && onConfigChange) {
      // console.log("🔧 첫 번째 야드 레이아웃 자동 선택:", layouts[0]);
      onConfigChange({
        layoutId: layouts[0].id,
        layoutName: layouts[0].name,
      });
    }
  }, [isEditMode, layouts, config?.layoutId, onConfigChange]);

  // 레이아웃 선택 (편집 모드에서만)
  const handleSelectLayout = (layout: YardLayout) => {
    if (onConfigChange) {
      onConfigChange({
        layoutId: layout.id,
        layoutName: layout.name,
      });
    }
  };

  // 새 레이아웃 생성
  const handleCreateLayout = async (name: string) => {
    try {
      const response = await yardLayoutApi.createLayout({ name });
      if (response.success) {
        await loadLayouts();
        setIsCreateModalOpen(false);
        setEditingLayout(response.data as YardLayout);
      }
    } catch (error) {
      console.error("야드 레이아웃 생성 실패:", error);
      throw error;
    }
  };

  // 편집 완료
  const handleEditComplete = () => {
    if (editingLayout && onConfigChange) {
      onConfigChange({
        layoutId: editingLayout.id,
        layoutName: editingLayout.name,
      });
    }
    setEditingLayout(null);
    loadLayouts();
  };

  // 레이아웃 삭제
  const handleDeleteLayout = async () => {
    if (!deleteLayoutId) return;

    try {
      const response = await yardLayoutApi.deleteLayout(deleteLayoutId);
      if (response.success) {
        // 삭제된 레이아웃이 현재 선택된 레이아웃이면 설정 초기화
        if (config?.layoutId === deleteLayoutId && onConfigChange) {
          onConfigChange({ layoutId: 0, layoutName: "" });
        }
        await loadLayouts();
      }
    } catch (error) {
      console.error("레이아웃 삭제 실패:", error);
    } finally {
      setDeleteLayoutId(null);
    }
  };

  // 편집 모드: 편집 중인 경우 DigitalTwinEditor 표시
  if (isEditMode && editingLayout) {
    return (
      <div className="h-full w-full">
        <DigitalTwinEditor 
          layoutId={editingLayout.id} 
          layoutName={editingLayout.name}
          onBack={handleEditComplete} 
        />
      </div>
    );
  }

  // 편집 모드: 레이아웃 선택 UI
  if (isEditMode) {
    return (
      <div className="widget-interactive-area flex h-full w-full flex-col bg-background">
        <div className="flex items-center justify-between border-b p-4">
          <div>
            <h3 className="text-sm font-semibold text-foreground">야드 레이아웃 선택</h3>
            <p className="mt-1 text-xs text-muted-foreground">
              {config?.layoutName ? `선택됨: ${config.layoutName}` : "표시할 야드 레이아웃을 선택하세요"}
            </p>
          </div>
          <Button onClick={() => setIsCreateModalOpen(true)} size="sm">
            <Plus className="mr-1 h-4 w-4" />새 야드 생성
          </Button>
        </div>

        <div className="flex-1 overflow-auto p-4">
          {isLoading ? (
            <div className="flex h-full items-center justify-center">
              <div className="text-sm text-muted-foreground">로딩 중...</div>
            </div>
          ) : layouts.length === 0 ? (
            <div className="flex h-full items-center justify-center">
              <div className="text-center">
                <div className="mb-2 text-4xl">🏗️</div>
                <div className="text-sm text-foreground">생성된 야드 레이아웃이 없습니다</div>
                <div className="mt-1 text-xs text-muted-foreground">먼저 야드 레이아웃을 생성하세요</div>
              </div>
            </div>
          ) : (
            <div className="grid gap-3">
              {layouts.map((layout) => (
                <div
                  key={layout.id}
                  className={`rounded-lg border p-3 transition-all ${
                    config?.layoutId === layout.id ? "border-primary bg-primary/10" : "border-border bg-background"
                  }`}
                >
                  <div className="flex items-start justify-between gap-3">
                    <button onClick={() => handleSelectLayout(layout)} className="flex-1 text-left hover:opacity-80">
                      <div className="flex items-center gap-2">
                        <span className="font-medium text-foreground">{layout.name}</span>
                        {config?.layoutId === layout.id && <Check className="h-4 w-4 text-primary" />}
                      </div>
                      {layout.description && <p className="mt-1 text-xs text-muted-foreground">{layout.description}</p>}
                      <div className="mt-2 text-xs text-muted-foreground">배치된 자재: {layout.placement_count}개</div>
                    </button>
                    <div className="flex gap-1">
                      <Button
                        variant="outline"
                        size="sm"
                        onClick={(e) => {
                          e.stopPropagation();
                          setEditingLayout(layout);
                        }}
                      >
                        편집
                      </Button>
                      <Button
                        variant="outline"
                        size="sm"
                        className="text-destructive hover:bg-destructive/10"
                        onClick={(e) => {
                          e.stopPropagation();
                          setDeleteLayoutId(layout.id);
                        }}
                      >
                        <Trash2 className="h-4 w-4" />
                      </Button>
                    </div>
                  </div>
                </div>
              ))}
            </div>
          )}
        </div>

        {/* 생성 모달 */}
        <YardLayoutCreateModal
          isOpen={isCreateModalOpen}
          onClose={() => setIsCreateModalOpen(false)}
          onCreate={handleCreateLayout}
        />

        {/* 삭제 확인 모달 */}
        <Dialog
          open={deleteLayoutId !== null}
          onOpenChange={(open) => {
            if (!open) setDeleteLayoutId(null);
          }}
        >
          <DialogContent onPointerDown={(e) => e.stopPropagation()} className="sm:max-w-[425px]">
            <DialogHeader>
              <DialogTitle>야드 레이아웃 삭제</DialogTitle>
            </DialogHeader>
            <div className="space-y-4">
              <p className="text-sm text-foreground">
                이 야드 레이아웃을 삭제하시겠습니까?
                <br />
                레이아웃 내의 모든 배치 정보도 함께 삭제됩니다.
                <br />
                <span className="font-semibold text-destructive">이 작업은 되돌릴 수 없습니다.</span>
              </p>
              <div className="flex justify-end gap-2">
                <Button variant="outline" onClick={() => setDeleteLayoutId(null)}>
                  취소
                </Button>
                <Button onClick={handleDeleteLayout} className="bg-destructive hover:bg-destructive/90">
                  삭제
                </Button>
              </div>
            </div>
          </DialogContent>
        </Dialog>
      </div>
    );
  }

  // 뷰 모드: 선택된 레이아웃의 3D 뷰어 표시
  if (!config?.layoutId) {
    console.warn("⚠️ 야드관리 위젯: layoutId가 설정되지 않음", { config, isEditMode });
    return (
      <div className="flex h-full w-full items-center justify-center bg-muted">
        <div className="text-center">
          <div className="mb-2 text-4xl">🏗️</div>
          <div className="text-sm font-medium text-foreground">야드 레이아웃이 설정되지 않았습니다</div>
          <div className="mt-1 text-xs text-muted-foreground">대시보드 편집에서 레이아웃을 선택하세요</div>
          <div className="mt-2 text-xs text-destructive">
            디버그: config={JSON.stringify(config)}
          </div>
        </div>
      </div>
    );
  }

  // 선택된 레이아웃의 디지털 트윈 뷰어 표시
  return (
    <div className="h-full w-full">
      <DigitalTwinViewer layoutId={config.layoutId} />
    </div>
  );
}
