import 'package:flutter/material.dart';
import '../../controllers/add_subscription_controller.dart';
import '../common/form_fields/currency_input_field.dart';
import '../common/form_fields/date_picker_field.dart';

/// 구독 추가 화면의 이벤트/할인 섹션
class AddSubscriptionEventSection extends StatelessWidget {
  final AddSubscriptionController controller;
  final Animation<double> fadeAnimation;
  final Animation<Offset> slideAnimation;
  final Function setState;

  const AddSubscriptionEventSection({
    super.key,
    required this.controller,
    required this.fadeAnimation,
    required this.slideAnimation,
    required this.setState,
  });

  @override
  Widget build(BuildContext context) {
    return FadeTransition(
      opacity: Tween<double>(begin: 0.0, end: 1.0).animate(
        CurvedAnimation(
          parent: controller.animationController!,
          curve: const Interval(0.4, 1.0, curve: Curves.easeIn),
        ),
      ),
      child: SlideTransition(
        position: Tween<Offset>(
          begin: const Offset(0.0, 0.5),
          end: Offset.zero,
        ).animate(CurvedAnimation(
          parent: controller.animationController!,
          curve: const Interval(0.4, 1.0, curve: Curves.easeOutCubic),
        )),
        child: Container(
          margin: const EdgeInsets.only(bottom: 20),
          padding: const EdgeInsets.all(16),
          decoration: BoxDecoration(
            color: Colors.white,
            borderRadius: BorderRadius.circular(16),
            border: Border.all(
              color: controller.isEventActive 
                  ? const Color(0xFF3B82F6) 
                  : Colors.grey.withValues(alpha: 0.2),
              width: controller.isEventActive ? 2 : 1,
            ),
          ),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(
                children: [
                  Checkbox(
                    value: controller.isEventActive,
                    onChanged: (value) {
                      setState(() {
                        controller.isEventActive = value ?? false;
                        if (!controller.isEventActive) {
                          // 이벤트 비활성화 시 관련 데이터 초기화
                          controller.eventStartDate = DateTime.now();
                          controller.eventEndDate = DateTime.now().add(const Duration(days: 30));
                          controller.eventPriceController.clear();
                        } else {
                          // 이벤트 활성화 시 날짜가 null이면 기본값 설정
                          controller.eventStartDate ??= DateTime.now();
                          controller.eventEndDate ??= DateTime.now().add(const Duration(days: 30));
                        }
                      });
                    },
                    activeColor: const Color(0xFF3B82F6),
                  ),
                  const Text(
                    '이벤트/할인 설정',
                    style: TextStyle(
                      fontSize: 16,
                      fontWeight: FontWeight.w600,
                      color: Color(0xFF1E293B),
                    ),
                  ),
                  const SizedBox(width: 8),
                  Icon(
                    Icons.local_offer,
                    size: 20,
                    color: controller.isEventActive 
                        ? const Color(0xFF3B82F6)
                        : Colors.grey,
                  ),
                ],
              ),
              
              // 이벤트 활성화 시 추가 필드 표시
              AnimatedContainer(
                duration: const Duration(milliseconds: 300),
                height: controller.isEventActive ? null : 0,
                child: AnimatedOpacity(
                  duration: const Duration(milliseconds: 300),
                  opacity: controller.isEventActive ? 1.0 : 0.0,
                  child: Column(
                    children: [
                      const SizedBox(height: 20),
                      
                      // 이벤트 기간
                      DateRangePickerField(
                        startDate: controller.eventStartDate,
                        endDate: controller.eventEndDate,
                        onStartDateSelected: (date) {
                          setState(() {
                            controller.eventStartDate = date;
                          });
                        },
                        onEndDateSelected: (date) {
                          setState(() {
                            controller.eventEndDate = date;
                          });
                        },
                        startLabel: '시작일',
                        endLabel: '종료일',
                        primaryColor: const Color(0xFF3B82F6),
                      ),
                      const SizedBox(height: 20),
                      
                      // 이벤트 가격
                      CurrencyInputField(
                        controller: controller.eventPriceController,
                        currency: controller.currency,
                        label: '이벤트 가격',
                        hintText: '할인된 가격을 입력하세요',
                      ),
                    ],
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}