"use client";

/**
 * V2ComponentsDemo
 * 
 * V2 컴포넌트들을 테스트하고 미리볼 수 있는 데모 페이지
 */

import React, { useState } from "react";
import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";
import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import { Separator } from "@/components/ui/separator";
import { ArrowLeft, Code, Eye, Zap } from "lucide-react";

// V2 컴포넌트들
import { V2Input } from "./V2Input";
import { V2Select } from "./V2Select";
import { V2Date } from "./V2Date";
import { V2List } from "./V2List";
import { V2Layout } from "./V2Layout";
import { V2Group } from "./V2Group";
import { V2Media } from "./V2Media";
import { V2Biz } from "./V2Biz";
import { V2Hierarchy } from "./V2Hierarchy";

// 조건부 로직
import { V2FormProvider, useV2Form } from "./V2FormContext";
import { ConditionalConfigPanel } from "./ConditionalConfigPanel";

// 타입
import { HierarchyNode, ConditionalConfig } from "@/types/v2-components";

interface V2ComponentsDemoProps {
  onBack?: () => void;
}

export function V2ComponentsDemo({ onBack }: V2ComponentsDemoProps) {
  const [activeTab, setActiveTab] = useState("conditional");
  
  // 데모용 상태
  const [inputValues, setInputValues] = useState({
    text: "",
    number: 50,
    password: "",
    slider: 30,
    color: "#3b82f6",
  });
  
  const [selectValues, setSelectValues] = useState({
    dropdown: "",
    radio: "",
    check: [] as string[],
    tag: [] as string[],
    toggle: "false",
  });
  
  const [dateValues, setDateValues] = useState({
    date: "",
    time: "",
    datetime: "",
    range: ["", ""] as [string, string],
  });

  // 샘플 데이터
  const sampleOptions = [
    { value: "option1", label: "옵션 1" },
    { value: "option2", label: "옵션 2" },
    { value: "option3", label: "옵션 3" },
    { value: "option4", label: "옵션 4" },
  ];

  const sampleTableData = [
    { id: 1, name: "홍길동", email: "hong@test.com", status: "active", date: "2024-01-15" },
    { id: 2, name: "김철수", email: "kim@test.com", status: "inactive", date: "2024-02-20" },
    { id: 3, name: "이영희", email: "lee@test.com", status: "active", date: "2024-03-10" },
    { id: 4, name: "박민수", email: "park@test.com", status: "pending", date: "2024-04-05" },
  ];

  const sampleHierarchyData: HierarchyNode[] = [
    {
      id: "1",
      label: "본사",
      children: [
        {
          id: "1-1",
          label: "영업부",
          children: [
            { id: "1-1-1", label: "영업1팀" },
            { id: "1-1-2", label: "영업2팀" },
          ],
        },
        {
          id: "1-2",
          label: "개발부",
          children: [
            { id: "1-2-1", label: "프론트엔드팀" },
            { id: "1-2-2", label: "백엔드팀" },
          ],
        },
      ],
    },
  ];

  return (
    <div className="flex h-full flex-col bg-background">
      {/* 헤더 */}
      <div className="flex items-center gap-4 border-b p-4">
        {onBack && (
          <Button variant="outline" size="sm" onClick={onBack}>
            <ArrowLeft className="mr-2 h-4 w-4" />
            뒤로
          </Button>
        )}
        <div className="flex-1">
          <h1 className="text-2xl font-bold">V2 컴포넌트 테스트</h1>
          <p className="text-sm text-muted-foreground">
            10개의 통합 컴포넌트를 테스트합니다
          </p>
        </div>
        <Badge variant="secondary">Phase 1-3 완료</Badge>
      </div>

      {/* 탭 컨텐츠 */}
      <div className="flex-1 overflow-auto p-4">
        <Tabs value={activeTab} onValueChange={setActiveTab}>
          <TabsList className="grid w-full grid-cols-5 lg:grid-cols-10">
            <TabsTrigger value="conditional" className="gap-1 text-amber-600">
              <Zap className="h-3 w-3" />
              조건부
            </TabsTrigger>
            <TabsTrigger value="input">Input</TabsTrigger>
            <TabsTrigger value="select">Select</TabsTrigger>
            <TabsTrigger value="date">Date</TabsTrigger>
            <TabsTrigger value="list">List</TabsTrigger>
            <TabsTrigger value="layout">Layout</TabsTrigger>
            <TabsTrigger value="group" className="hidden lg:flex">Group</TabsTrigger>
            <TabsTrigger value="media" className="hidden lg:flex">Media</TabsTrigger>
            <TabsTrigger value="biz" className="hidden lg:flex">Biz</TabsTrigger>
            <TabsTrigger value="hierarchy" className="hidden lg:flex">Hierarchy</TabsTrigger>
          </TabsList>

          {/* 조건부 동작 데모 탭 */}
          <TabsContent value="conditional" className="mt-6">
            <ConditionalDemo />
          </TabsContent>

          {/* V2Input 탭 */}
          <TabsContent value="input" className="mt-6">
            <Card>
              <CardHeader>
                <CardTitle>V2Input</CardTitle>
                <CardDescription>
                  통합 입력 컴포넌트 - text, number, password, slider, color, button
                </CardDescription>
              </CardHeader>
              <CardContent className="space-y-6">
                <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
                  {/* Text Input */}
                  <V2Input
                    id="demo-text"
                    label="텍스트 입력"
                    v2Type="V2Input"
                    config={{ type: "text", placeholder: "텍스트를 입력하세요" }}
                    value={inputValues.text}
                    onChange={(v) => setInputValues({ ...inputValues, text: String(v) })}
                  />

                  {/* Number Input */}
                  <V2Input
                    id="demo-number"
                    label="숫자 입력"
                    required
                    v2Type="V2Input"
                    config={{ type: "number", min: 0, max: 100, step: 5 }}
                    value={inputValues.number}
                    onChange={(v) => setInputValues({ ...inputValues, number: Number(v) })}
                  />

                  {/* Password Input */}
                  <V2Input
                    id="demo-password"
                    label="비밀번호"
                    v2Type="V2Input"
                    config={{ type: "password", placeholder: "비밀번호 입력" }}
                    value={inputValues.password}
                    onChange={(v) => setInputValues({ ...inputValues, password: String(v) })}
                  />

                  {/* Slider Input */}
                  <V2Input
                    id="demo-slider"
                    label="슬라이더"
                    v2Type="V2Input"
                    config={{ type: "slider", min: 0, max: 100, step: 10 }}
                    value={inputValues.slider}
                    onChange={(v) => setInputValues({ ...inputValues, slider: Number(v) })}
                  />

                  {/* Color Input */}
                  <V2Input
                    id="demo-color"
                    label="색상 선택"
                    v2Type="V2Input"
                    config={{ type: "color" }}
                    value={inputValues.color}
                    onChange={(v) => setInputValues({ ...inputValues, color: String(v) })}
                  />

                  {/* Button */}
                  <V2Input
                    id="demo-button"
                    label="버튼"
                    v2Type="V2Input"
                    config={{ 
                      type: "button", 
                      buttonText: "클릭하세요",
                      buttonVariant: "default"
                    }}
                  />
                </div>

                <Separator />
                
                <div className="p-4 bg-muted/50 rounded-lg">
                  <h4 className="text-sm font-medium mb-2">현재 값:</h4>
                  <pre className="text-xs overflow-auto">
                    {JSON.stringify(inputValues, null, 2)}
                  </pre>
                </div>
              </CardContent>
            </Card>
          </TabsContent>

          {/* V2Select 탭 */}
          <TabsContent value="select" className="mt-6">
            <Card>
              <CardHeader>
                <CardTitle>V2Select</CardTitle>
                <CardDescription>
                  통합 선택 컴포넌트 - dropdown, radio, check, tag, toggle, swap
                </CardDescription>
              </CardHeader>
              <CardContent className="space-y-6">
                <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
                  {/* Dropdown */}
                  <V2Select
                    id="demo-dropdown"
                    label="드롭다운"
                    v2Type="V2Select"
                    config={{ 
                      mode: "dropdown", 
                      source: "static",
                      options: sampleOptions,
                      searchable: true
                    }}
                    value={selectValues.dropdown}
                    onChange={(v) => setSelectValues({ ...selectValues, dropdown: String(v) })}
                  />

                  {/* Radio */}
                  <V2Select
                    id="demo-radio"
                    label="라디오 버튼"
                    v2Type="V2Select"
                    config={{ 
                      mode: "radio", 
                      source: "static",
                      options: sampleOptions 
                    }}
                    value={selectValues.radio}
                    onChange={(v) => setSelectValues({ ...selectValues, radio: String(v) })}
                  />

                  {/* Checkbox */}
                  <V2Select
                    id="demo-check"
                    label="체크박스 (다중선택)"
                    v2Type="V2Select"
                    config={{ 
                      mode: "check", 
                      source: "static",
                      options: sampleOptions,
                      maxSelect: 3
                    }}
                    value={selectValues.check}
                    onChange={(v) => setSelectValues({ ...selectValues, check: v as string[] })}
                  />

                  {/* Tag */}
                  <V2Select
                    id="demo-tag"
                    label="태그 선택"
                    v2Type="V2Select"
                    config={{ 
                      mode: "tag", 
                      source: "static",
                      options: sampleOptions 
                    }}
                    value={selectValues.tag}
                    onChange={(v) => setSelectValues({ ...selectValues, tag: v as string[] })}
                  />

                  {/* Toggle */}
                  <V2Select
                    id="demo-toggle"
                    label="토글"
                    v2Type="V2Select"
                    config={{ 
                      mode: "toggle", 
                      source: "static",
                      options: [
                        { value: "false", label: "비활성" },
                        { value: "true", label: "활성" }
                      ]
                    }}
                    value={selectValues.toggle}
                    onChange={(v) => setSelectValues({ ...selectValues, toggle: String(v) })}
                  />
                </div>

                <Separator />
                
                <div className="p-4 bg-muted/50 rounded-lg">
                  <h4 className="text-sm font-medium mb-2">현재 값:</h4>
                  <pre className="text-xs overflow-auto">
                    {JSON.stringify(selectValues, null, 2)}
                  </pre>
                </div>
              </CardContent>
            </Card>
          </TabsContent>

          {/* V2Date 탭 */}
          <TabsContent value="date" className="mt-6">
            <Card>
              <CardHeader>
                <CardTitle>V2Date</CardTitle>
                <CardDescription>
                  통합 날짜/시간 컴포넌트 - date, time, datetime, range
                </CardDescription>
              </CardHeader>
              <CardContent className="space-y-6">
                <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
                  {/* Date */}
                  <V2Date
                    id="demo-date"
                    label="날짜 선택"
                    v2Type="V2Date"
                    config={{ type: "date", format: "YYYY-MM-DD" }}
                    value={dateValues.date}
                    onChange={(v) => setDateValues({ ...dateValues, date: String(v) })}
                  />

                  {/* Time */}
                  <V2Date
                    id="demo-time"
                    label="시간 선택"
                    v2Type="V2Date"
                    config={{ type: "time" }}
                    value={dateValues.time}
                    onChange={(v) => setDateValues({ ...dateValues, time: String(v) })}
                  />

                  {/* DateTime */}
                  <V2Date
                    id="demo-datetime"
                    label="날짜+시간"
                    v2Type="V2Date"
                    config={{ type: "datetime" }}
                    value={dateValues.datetime}
                    onChange={(v) => setDateValues({ ...dateValues, datetime: String(v) })}
                  />

                  {/* Range */}
                  <V2Date
                    id="demo-range"
                    label="기간 선택"
                    v2Type="V2Date"
                    config={{ type: "date", range: true }}
                    value={dateValues.range}
                    onChange={(v) => setDateValues({ ...dateValues, range: v as [string, string] })}
                  />
                </div>

                <Separator />
                
                <div className="p-4 bg-muted/50 rounded-lg">
                  <h4 className="text-sm font-medium mb-2">현재 값:</h4>
                  <pre className="text-xs overflow-auto">
                    {JSON.stringify(dateValues, null, 2)}
                  </pre>
                </div>
              </CardContent>
            </Card>
          </TabsContent>

          {/* V2List 탭 */}
          <TabsContent value="list" className="mt-6">
            <Card>
              <CardHeader>
                <CardTitle>V2List</CardTitle>
                <CardDescription>
                  통합 리스트 컴포넌트 - table, card, list
                </CardDescription>
              </CardHeader>
              <CardContent className="space-y-6">
                <V2List
                  id="demo-list"
                  label="사용자 목록"
                  v2Type="V2List"
                  config={{
                    viewMode: "table",
                    searchable: true,
                    pageable: true,
                    pageSize: 5,
                    columns: [
                      { field: "id", header: "ID", width: 60, sortable: true },
                      { field: "name", header: "이름", sortable: true },
                      { field: "email", header: "이메일" },
                      { field: "status", header: "상태" },
                      { field: "date", header: "등록일", format: "date", sortable: true },
                    ],
                  }}
                  data={sampleTableData}
                  onRowClick={(row) => console.log("Row clicked:", row)}
                />
              </CardContent>
            </Card>
          </TabsContent>

          {/* V2Layout 탭 */}
          <TabsContent value="layout" className="mt-6">
            <Card>
              <CardHeader>
                <CardTitle>V2Layout</CardTitle>
                <CardDescription>
                  통합 레이아웃 컴포넌트 - 12컬럼 그리드 시스템, split, flex
                </CardDescription>
              </CardHeader>
              <CardContent className="space-y-6">
                {/* 12컬럼 그리드 시스템 */}
                <div>
                  <h4 className="text-sm font-medium mb-3">12컬럼 그리드 시스템</h4>
                  <p className="text-xs text-muted-foreground mb-4">
                    shadcn/Tailwind 표준 12컬럼 시스템. 자식 요소에 col-span-* 클래스로 너비 조절
                  </p>
                  
                  {/* 12컬럼 전체 보기 */}
                  <V2Layout
                    id="demo-grid-12"
                    v2Type="V2Layout"
                    config={{ type: "grid", columns: 12, gap: "4px", use12Column: true }}
                  >
                    {Array.from({ length: 12 }).map((_, i) => (
                      <div key={i} className="p-2 bg-primary/20 rounded text-center text-xs">
                        {i + 1}
                      </div>
                    ))}
                  </V2Layout>
                </div>

                <Separator />

                {/* col-span 예시 */}
                <div>
                  <h4 className="text-sm font-medium mb-3">col-span 활용 예시</h4>
                  <V2Layout
                    id="demo-grid-span"
                    v2Type="V2Layout"
                    config={{ type: "grid", columns: 12, gap: "8px", use12Column: true }}
                  >
                    <div className="col-span-12 p-3 bg-primary/10 rounded text-center text-sm">
                      col-span-12 (전체)
                    </div>
                    <div className="col-span-6 p-3 bg-emerald-100 rounded text-center text-sm">
                      col-span-6 (절반)
                    </div>
                    <div className="col-span-6 p-3 bg-emerald-100 rounded text-center text-sm">
                      col-span-6 (절반)
                    </div>
                    <div className="col-span-4 p-3 bg-amber-100 rounded text-center text-sm">
                      col-span-4 (1/3)
                    </div>
                    <div className="col-span-4 p-3 bg-amber-100 rounded text-center text-sm">
                      col-span-4 (1/3)
                    </div>
                    <div className="col-span-4 p-3 bg-amber-100 rounded text-center text-sm">
                      col-span-4 (1/3)
                    </div>
                    <div className="col-span-3 p-3 bg-purple-100 rounded text-center text-sm">
                      col-span-3 (1/4)
                    </div>
                    <div className="col-span-3 p-3 bg-purple-100 rounded text-center text-sm">
                      col-span-3 (1/4)
                    </div>
                    <div className="col-span-3 p-3 bg-purple-100 rounded text-center text-sm">
                      col-span-3 (1/4)
                    </div>
                    <div className="col-span-3 p-3 bg-purple-100 rounded text-center text-sm">
                      col-span-3 (1/4)
                    </div>
                    <div className="col-span-8 p-3 bg-destructive/10 rounded text-center text-sm">
                      col-span-8 (2/3)
                    </div>
                    <div className="col-span-4 p-3 bg-destructive/10 rounded text-center text-sm">
                      col-span-4 (1/3)
                    </div>
                  </V2Layout>
                </div>

                <Separator />

                {/* Split Layout */}
                <div>
                  <h4 className="text-sm font-medium mb-3">Split Layout (리사이즈 가능)</h4>
                  <V2Layout
                    id="demo-split"
                    v2Type="V2Layout"
                    config={{ type: "split", direction: "horizontal", splitRatio: [30, 70] }}
                    style={{ height: "200px" }}
                  >
                    <div className="p-4 bg-primary/10 h-full flex items-center justify-center">
                      왼쪽 패널
                    </div>
                    <div className="p-4 bg-emerald-100 h-full flex items-center justify-center">
                      오른쪽 패널
                    </div>
                  </V2Layout>
                </div>
              </CardContent>
            </Card>
          </TabsContent>

          {/* V2Group 탭 */}
          <TabsContent value="group" className="mt-6">
            <Card>
              <CardHeader>
                <CardTitle>V2Group</CardTitle>
                <CardDescription>
                  통합 그룹 컴포넌트 - tabs, accordion, section, card-section
                </CardDescription>
              </CardHeader>
              <CardContent className="space-y-6">
                {/* Tabs */}
                <V2Group
                  id="demo-tabs"
                  v2Type="V2Group"
                  config={{
                    type: "tabs",
                    tabs: [
                      { id: "tab1", title: "탭 1", content: <div className="p-4">탭 1 내용</div> },
                      { id: "tab2", title: "탭 2", content: <div className="p-4">탭 2 내용</div> },
                      { id: "tab3", title: "탭 3", content: <div className="p-4">탭 3 내용</div> },
                    ],
                  }}
                />

                <Separator />

                {/* Accordion */}
                <V2Group
                  id="demo-accordion"
                  v2Type="V2Group"
                  config={{
                    type: "accordion",
                    title: "접을 수 있는 섹션",
                    collapsible: true,
                    defaultExpanded: true,
                  }}
                >
                  <p>이 내용은 접었다 펼 수 있습니다.</p>
                </V2Group>

                <Separator />

                {/* Card Section */}
                <V2Group
                  id="demo-card"
                  v2Type="V2Group"
                  config={{
                    type: "card-section",
                    title: "카드 섹션",
                  }}
                >
                  <p>카드 스타일 섹션 내용입니다.</p>
                </V2Group>
              </CardContent>
            </Card>
          </TabsContent>

          {/* V2Media 탭 */}
          <TabsContent value="media" className="mt-6">
            <Card>
              <CardHeader>
                <CardTitle>V2Media</CardTitle>
                <CardDescription>
                  통합 미디어 컴포넌트 - file, image, video, audio
                </CardDescription>
              </CardHeader>
              <CardContent className="space-y-6">
                <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
                  {/* File Upload */}
                  <V2Media
                    id="demo-file"
                    label="파일 업로드"
                    v2Type="V2Media"
                    config={{ type: "file", multiple: true }}
                  />

                  {/* Image Upload */}
                  <V2Media
                    id="demo-image"
                    label="이미지 업로드"
                    v2Type="V2Media"
                    config={{ type: "image", preview: true }}
                  />
                </div>
              </CardContent>
            </Card>
          </TabsContent>

          {/* V2Biz 탭 */}
          <TabsContent value="biz" className="mt-6">
            <Card>
              <CardHeader>
                <CardTitle>V2Biz</CardTitle>
                <CardDescription>
                  통합 비즈니스 컴포넌트 - numbering, category, flow 등 (플레이스홀더)
                </CardDescription>
              </CardHeader>
              <CardContent className="space-y-6">
                <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
                  <V2Biz
                    id="demo-numbering"
                    v2Type="V2Biz"
                    config={{ type: "numbering" }}
                  />
                  <V2Biz
                    id="demo-category"
                    v2Type="V2Biz"
                    config={{ type: "category" }}
                  />
                  <V2Biz
                    id="demo-related"
                    v2Type="V2Biz"
                    config={{ type: "related-buttons" }}
                  />
                </div>
              </CardContent>
            </Card>
          </TabsContent>

          {/* V2Hierarchy 탭 */}
          <TabsContent value="hierarchy" className="mt-6">
            <Card>
              <CardHeader>
                <CardTitle>V2Hierarchy</CardTitle>
                <CardDescription>
                  통합 계층 구조 컴포넌트 - tree, org, bom, cascading
                </CardDescription>
              </CardHeader>
              <CardContent className="space-y-6">
                <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
                  {/* Tree View */}
                  <div>
                    <h4 className="text-sm font-medium mb-3">트리 뷰</h4>
                    <V2Hierarchy
                      id="demo-tree"
                      v2Type="V2Hierarchy"
                      config={{ type: "tree", viewMode: "tree", editable: false }}
                      data={sampleHierarchyData}
                    />
                  </div>

                  {/* Cascading Dropdowns */}
                  <div>
                    <h4 className="text-sm font-medium mb-3">연쇄 드롭다운</h4>
                    <V2Hierarchy
                      id="demo-cascading"
                      v2Type="V2Hierarchy"
                      config={{ type: "cascading", viewMode: "dropdown", maxLevel: 3 }}
                      data={sampleHierarchyData}
                    />
                  </div>
                </div>
              </CardContent>
            </Card>
          </TabsContent>
        </Tabs>
      </div>
    </div>
  );
}

export default V2ComponentsDemo;

// ===== 조건부 동작 데모 컴포넌트 =====

/**
 * 조건부 동작을 시연하는 데모 컴포넌트
 * 
 * 시나리오:
 * 1. 계약 유형 선택 → 유형별 다른 필드 표시
 * 2. VIP 여부 체크 → VIP 전용 필드 활성화
 * 3. 국가 선택 → 해당 국가의 도시만 표시 (연쇄)
 */
function ConditionalDemo() {
  return (
    <V2FormProvider
      initialValues={{
        contractType: "",
        isVip: false,
        country: "",
        city: "",
        discountRate: 0,
        employeeCount: 0,
        startDate: "",
        endDate: "",
      }}
    >
      <ConditionalDemoContent />
    </V2FormProvider>
  );
}

function ConditionalDemoContent() {
  const { formData, setValue, evaluateCondition } = useV2Form();

  // 국가별 도시 데이터
  const cityOptions: Record<string, Array<{ value: string; label: string }>> = {
    korea: [
      { value: "seoul", label: "서울" },
      { value: "busan", label: "부산" },
      { value: "incheon", label: "인천" },
      { value: "daegu", label: "대구" },
    ],
    japan: [
      { value: "tokyo", label: "도쿄" },
      { value: "osaka", label: "오사카" },
      { value: "kyoto", label: "교토" },
    ],
    usa: [
      { value: "newyork", label: "뉴욕" },
      { value: "la", label: "로스앤젤레스" },
      { value: "chicago", label: "시카고" },
    ],
  };

  // 현재 선택된 국가의 도시 옵션
  const currentCountry = formData.country as string;
  const availableCities = currentCountry ? cityOptions[currentCountry] || [] : [];

  // 조건부 설정
  const showB2BFields: ConditionalConfig = {
    enabled: true,
    field: "contractType",
    operator: "=",
    value: "b2b",
    action: "show",
  };

  const showB2CFields: ConditionalConfig = {
    enabled: true,
    field: "contractType",
    operator: "=",
    value: "b2c",
    action: "show",
  };

  const showDiscountField: ConditionalConfig = {
    enabled: true,
    field: "isVip",
    operator: "=",
    value: true,
    action: "show",
  };

  // 조건 평가
  const b2bState = evaluateCondition("b2bFields", showB2BFields);
  const b2cState = evaluateCondition("b2cFields", showB2CFields);
  const discountState = evaluateCondition("discountRate", showDiscountField);

  return (
    <div className="space-y-6">
      {/* 시나리오 1: 계약 유형에 따른 필드 표시 */}
      <Card>
        <CardHeader>
          <CardTitle className="text-lg">시나리오 1: 계약 유형별 필드 표시</CardTitle>
          <CardDescription>
            계약 유형을 선택하면 해당 유형에 맞는 입력 필드가 나타납니다
          </CardDescription>
        </CardHeader>
        <CardContent className="space-y-4">
          {/* 계약 유형 선택 */}
          <V2Select
            id="contractType"
            label="계약 유형"
            required
            v2Type="V2Select"
            config={{
              mode: "radio",
              source: "static",
              options: [
                { value: "b2b", label: "B2B (기업간 거래)" },
                { value: "b2c", label: "B2C (소비자 거래)" },
              ],
            }}
            value={formData.contractType as string}
            onChange={(v) => setValue("contractType", v)}
          />

          {/* B2B 전용 필드 */}
          {b2bState.visible && (
            <div className="p-4 bg-primary/10 rounded-lg space-y-4 border-l-4 border-primary">
              <p className="text-sm font-medium text-primary">B2B 전용 입력 필드</p>
              <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                <V2Input
                  id="companyName"
                  label="거래처 회사명"
                  required
                  v2Type="V2Input"
                  config={{ type: "text", placeholder: "회사명 입력" }}
                  value={formData.companyName as string || ""}
                  onChange={(v) => setValue("companyName", v)}
                />
                <V2Input
                  id="employeeCount"
                  label="직원 수"
                  v2Type="V2Input"
                  config={{ type: "number", min: 1, max: 100000 }}
                  value={formData.employeeCount as number || 0}
                  onChange={(v) => setValue("employeeCount", v)}
                />
              </div>
            </div>
          )}

          {/* B2C 전용 필드 */}
          {b2cState.visible && (
            <div className="p-4 bg-emerald-50 rounded-lg space-y-4 border-l-4 border-emerald-500">
              <p className="text-sm font-medium text-emerald-700">B2C 전용 입력 필드</p>
              <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                <V2Input
                  id="customerName"
                  label="고객명"
                  required
                  v2Type="V2Input"
                  config={{ type: "text", placeholder: "고객명 입력" }}
                  value={formData.customerName as string || ""}
                  onChange={(v) => setValue("customerName", v)}
                />
                <V2Input
                  id="phone"
                  label="연락처"
                  v2Type="V2Input"
                  config={{ type: "text", placeholder: "010-0000-0000" }}
                  value={formData.phone as string || ""}
                  onChange={(v) => setValue("phone", v)}
                />
              </div>
            </div>
          )}
        </CardContent>
      </Card>

      {/* 시나리오 2: VIP 여부에 따른 필드 활성화 */}
      <Card>
        <CardHeader>
          <CardTitle className="text-lg">시나리오 2: 조건부 필드 활성화</CardTitle>
          <CardDescription>
            VIP 고객 체크 시 할인율 입력 필드가 나타납니다
          </CardDescription>
        </CardHeader>
        <CardContent className="space-y-4">
          <div className="flex items-center gap-4">
            <V2Select
              id="isVip"
              label="VIP 고객 여부"
              v2Type="V2Select"
              config={{
                mode: "toggle",
                source: "static",
                options: [
                  { value: "false", label: "일반" },
                  { value: "true", label: "VIP" },
                ],
              }}
              value={String(formData.isVip)}
              onChange={(v) => setValue("isVip", v === "true")}
            />
          </div>

          {/* VIP 전용 할인율 필드 */}
          {discountState.visible && (
            <div className="p-4 bg-amber-50 rounded-lg border-l-4 border-yellow-500">
              <p className="text-sm font-medium text-yellow-700 mb-3">VIP 전용 혜택 설정</p>
              <V2Input
                id="discountRate"
                label="할인율 (%)"
                v2Type="V2Input"
                config={{
                  type: "slider",
                  min: 0,
                  max: 50,
                  step: 5,
                }}
                value={formData.discountRate as number || 0}
                onChange={(v) => setValue("discountRate", v)}
              />
              <p className="text-xs text-muted-foreground mt-2">
                현재 할인율: {formData.discountRate || 0}%
              </p>
            </div>
          )}
        </CardContent>
      </Card>

      {/* 시나리오 3: 연쇄 드롭다운 (국가 → 도시) */}
      <Card>
        <CardHeader>
          <CardTitle className="text-lg">시나리오 3: 연쇄 드롭다운</CardTitle>
          <CardDescription>
            국가를 선택하면 해당 국가의 도시만 표시됩니다
          </CardDescription>
        </CardHeader>
        <CardContent className="space-y-4">
          <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
            {/* 국가 선택 */}
            <V2Select
              id="country"
              label="국가"
              required
              v2Type="V2Select"
              config={{
                mode: "dropdown",
                source: "static",
                options: [
                  { value: "korea", label: "대한민국" },
                  { value: "japan", label: "일본" },
                  { value: "usa", label: "미국" },
                ],
                searchable: true,
              }}
              value={formData.country as string}
              onChange={(v) => {
                setValue("country", v);
                setValue("city", ""); // 국가 변경 시 도시 초기화
              }}
            />

            {/* 도시 선택 (국가에 따라 옵션 변경) */}
            <V2Select
              id="city"
              label="도시"
              required
              disabled={!currentCountry}
              v2Type="V2Select"
              config={{
                mode: "dropdown",
                source: "static",
                options: availableCities,
                searchable: true,
              }}
              value={formData.city as string}
              onChange={(v) => setValue("city", v)}
            />
          </div>

          {!currentCountry && (
            <p className="text-sm text-muted-foreground">
              국가를 먼저 선택해주세요
            </p>
          )}
        </CardContent>
      </Card>

      {/* 조건부 설정 UI 데모 */}
      <ConditionalConfigUIDemo formData={formData} />

      {/* 현재 폼 데이터 표시 (하단으로 이동) */}
      <Card>
        <CardHeader>
          <CardTitle className="text-lg">현재 폼 데이터</CardTitle>
          <CardDescription>
            실시간으로 변경되는 폼 데이터를 확인합니다
          </CardDescription>
        </CardHeader>
        <CardContent>
          <div className="p-4 bg-muted/50 rounded-lg">
            <pre className="text-xs overflow-auto whitespace-pre-wrap">
              {JSON.stringify(formData, null, 2)}
            </pre>
          </div>
        </CardContent>
      </Card>
    </div>
  );
}

/**
 * 조건부 설정 UI 패널 데모
 * 
 * 비개발자도 UI로 조건부 설정을 할 수 있음을 보여주는 데모
 */
function ConditionalConfigUIDemo({ formData }: { formData: Record<string, unknown> }) {
  const [demoConfig, setDemoConfig] = useState<ConditionalConfig | undefined>(undefined);
  const { evaluateCondition } = useV2Form();

  // 데모용 필드 목록 (현재 폼의 필드들)
  const availableFields = [
    { id: "contractType", label: "계약 유형", type: "select", options: [
      { value: "b2b", label: "B2B" },
      { value: "b2c", label: "B2C" },
    ]},
    { id: "isVip", label: "VIP 여부", type: "checkbox" },
    { id: "country", label: "국가", type: "select", options: [
      { value: "korea", label: "대한민국" },
      { value: "japan", label: "일본" },
      { value: "usa", label: "미국" },
    ]},
    { id: "discountRate", label: "할인율", type: "number" },
    { id: "employeeCount", label: "직원 수", type: "number" },
  ];

  // 현재 설정으로 조건 평가
  const conditionResult = demoConfig ? evaluateCondition("demoField", demoConfig) : { visible: true, disabled: false };

  return (
    <Card className="border-orange-200 bg-amber-50/30">
      <CardHeader>
        <CardTitle className="text-lg flex items-center gap-2">
          <Zap className="h-5 w-5 text-amber-500" />
          조건부 설정 UI 데모
        </CardTitle>
        <CardDescription>
          화면관리에서 비개발자도 이 UI로 조건부 표시를 설정할 수 있습니다
        </CardDescription>
      </CardHeader>
      <CardContent>
        <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
          {/* 왼쪽: 설정 UI */}
          <div className="space-y-4">
            <h4 className="text-sm font-medium">설정 패널 (화면관리에 들어갈 UI)</h4>
            <div className="border rounded-lg p-4 bg-white">
              <ConditionalConfigPanel
                config={demoConfig}
                onChange={setDemoConfig}
                availableFields={availableFields}
                currentComponentId="demoField"
              />
            </div>
          </div>

          {/* 오른쪽: 미리보기 */}
          <div className="space-y-4">
            <h4 className="text-sm font-medium">적용 결과 미리보기</h4>
            <div className="border rounded-lg p-4 bg-white space-y-4">
              {/* 조건 평가 결과 */}
              <div className="space-y-2">
                <p className="text-xs text-muted-foreground">현재 조건 평가 결과:</p>
                <div className="flex gap-4">
                  <Badge variant={conditionResult.visible ? "default" : "secondary"}>
                    {conditionResult.visible ? "표시됨" : "숨겨짐"}
                  </Badge>
                  <Badge variant={conditionResult.disabled ? "destructive" : "outline"}>
                    {conditionResult.disabled ? "비활성화" : "활성화"}
                  </Badge>
                </div>
              </div>

              <Separator />

              {/* 대상 필드 미리보기 */}
              <div className="space-y-2">
                <p className="text-xs text-muted-foreground">대상 필드:</p>
                {conditionResult.visible ? (
                  <V2Input
                    id="demoTargetField"
                    label="테스트 입력 필드"
                    disabled={conditionResult.disabled}
                    v2Type="V2Input"
                    config={{ type: "text", placeholder: "이 필드가 조건에 따라 표시/숨김됩니다" }}
                  />
                ) : (
                  <div className="p-4 border-2 border-dashed rounded-lg text-center text-muted-foreground text-sm">
                    (조건에 의해 숨겨진 필드)
                  </div>
                )}
              </div>

              <Separator />

              {/* 생성된 JSON */}
              <div className="space-y-2">
                <p className="text-xs text-muted-foreground">생성된 설정 JSON:</p>
                <div className="p-3 bg-slate-900 rounded text-slate-100">
                  <pre className="text-[10px] overflow-auto">
                    {demoConfig ? JSON.stringify(demoConfig, null, 2) : "(설정 없음)"}
                  </pre>
                </div>
              </div>
            </div>
          </div>
        </div>

        {/* 안내 메시지 */}
        <div className="mt-4 p-3 bg-primary/10 rounded-lg">
          <p className="text-xs text-primary">
            위의 "조건부 표시" 스위치를 켜고 설정을 변경해보세요. 
            위 시나리오들의 필드 값을 변경하면 조건 평가 결과가 실시간으로 바뀝니다.
          </p>
        </div>
      </CardContent>
    </Card>
  );
}

