import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import '../../core/theme/app_theme.dart';
import '../../features/favorites/cubit/favorites_cubit.dart';

/// Reusable animated Favorite Star Toggle Button connected to global FavoritesCubit.
class FavoriteStarButton extends StatefulWidget {
  final String identifier;
  final String? symbol;
  final String? name;
  final double size;
  final EdgeInsetsGeometry? padding;

  const FavoriteStarButton({
    super.key,
    required this.identifier,
    this.symbol,
    this.name,
    this.size = 22,
    this.padding = const EdgeInsets.all(8),
  });

  @override
  State<FavoriteStarButton> createState() => _FavoriteStarButtonState();
}

class _FavoriteStarButtonState extends State<FavoriteStarButton> with SingleTickerProviderStateMixin {
  late AnimationController _controller;
  late Animation<double> _scaleAnimation;

  @override
  void initState() {
    super.initState();
    _controller = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 200),
    );
    _scaleAnimation = TweenSequence<double>([
      TweenSequenceItem(tween: Tween(begin: 1.0, end: 1.3), weight: 50),
      TweenSequenceItem(tween: Tween(begin: 1.3, end: 1.0), weight: 50),
    ]).animate(CurvedAnimation(parent: _controller, curve: Curves.easeInOut));
  }

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

  void _onPressed() {
    _controller.forward(from: 0.0);
    context.read<FavoritesCubit>().toggleFavorite(
      widget.identifier,
      symbol: widget.symbol,
      name: widget.name,
    );
  }

  @override
  Widget build(BuildContext context) {
    return BlocBuilder<FavoritesCubit, FavoritesState>(
      builder: (context, state) {
        final isFav = state.isFavorite(widget.identifier) ||
            (widget.symbol != null && state.isFavorite(widget.symbol!));

        return ScaleTransition(
          scale: _scaleAnimation,
          child: IconButton(
            padding: widget.padding ?? const EdgeInsets.all(8),
            constraints: const BoxConstraints(),
            icon: AnimatedSwitcher(
              duration: const Duration(milliseconds: 200),
              transitionBuilder: (child, anim) => ScaleTransition(scale: anim, child: child),
              child: Icon(
                isFav ? Icons.star_rounded : Icons.star_border_rounded,
                key: ValueKey<bool>(isFav),
                color: isFav ? Colors.amber : AppTheme.textMuted,
                size: widget.size,
              ),
            ),
            onPressed: _onPressed,
          ),
        );
      },
    );
  }
}