import 'package:flutter/material.dart';

import 'common_widget.dart';

class YearSelector extends StatefulWidget {
  final int currentYear;
  final Function(int) onYearChanged;

  const YearSelector(
      {super.key, required this.currentYear, required this.onYearChanged});

  @override
  State<YearSelector> createState() => _YearSelectorState();
}

class _YearSelectorState extends State<YearSelector>
    with SingleTickerProviderStateMixin {
  final int minYear = 2000;
  final int maxYear = 2100;

  late int _currentYear;

  // 用于动画效果
  late AnimationController _animationController;
  late Animation<double> _scaleAnimation;

  @override
  void initState() {
    super.initState();

    _currentYear = widget.currentYear;

    // 初始化动画控制器
    _animationController = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 200),
    );

    // 缩放动画
    _scaleAnimation = Tween<double>(begin: 1.0, end: 1.1).animate(
      CurvedAnimation(parent: _animationController, curve: Curves.easeInOut),
    );
  }

  @override
  void didUpdateWidget(YearSelector oldWidget) {
    super.didUpdateWidget(oldWidget);

    if (oldWidget.currentYear != widget.currentYear) {
      setState(() {
        _currentYear = widget.currentYear;
      });
    }
  }

  @override
  void dispose() {
    _animationController.dispose();
    super.dispose();
  }

  /// 切换到上一年
  void _previousYear() {
    if (_currentYear > minYear) {
      _animateYearChange(() {
        final newYear = _currentYear - 1;
        setState(() {
          _currentYear = newYear;
        });
        widget.onYearChanged(newYear);
      });
    }
  }

  /// 切换到下一年
  void _nextYear() {
    if (_currentYear < maxYear) {
      _animateYearChange(() {
        final newYear = _currentYear + 1;
        setState(() {
          _currentYear = newYear;
        });
        widget.onYearChanged(newYear);
      });
    }
  }

  /// 年份变化时的动画效果
  void _animateYearChange(VoidCallback onComplete) {
    _animationController.forward().then((_) {
      onComplete();
      _animationController.reverse();
    });
  }

  @override
  Widget build(BuildContext context) {
    return Row(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        CircleIconButton(
          icon: Icons.chevron_left,
          onPressed: _previousYear,
        ),
        AnimatedBuilder(
          animation: _scaleAnimation,
          builder: (context, child) {
            return Transform.scale(scale: _scaleAnimation.value, child: child);
          },
          child: Text(
            '$_currentYear',
            style: TextStyle(
              fontSize: 18,
              fontWeight: FontWeight.bold,
              color: Theme.of(context).colorScheme.primary,
            ),
          ),
        ),
        CircleIconButton(
          icon: Icons.chevron_right,
          onPressed: _nextYear,
        ),
      ],
    );
  }
}