import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../app/app_state.dart';
import '../services/order_polling_service.dart';

/// In-app notification banner that shows order status updates
class OrderStatusNotification extends StatefulWidget {
  const OrderStatusNotification({super.key});

  @override
  State<OrderStatusNotification> createState() => _OrderStatusNotificationState();
}

class _OrderStatusNotificationState extends State<OrderStatusNotification> with SingleTickerProviderStateMixin {
  OrderStatusUpdate? _latestUpdate;
  bool _isVisible = false;
  AnimationController? _animationController;
  Animation<double>? _slideAnimation;

  @override
  void initState() {
    super.initState();
    _animationController = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 300),
    );
    _slideAnimation = CurvedAnimation(
      parent: _animationController!,
      curve: Curves.easeOut,
    );
  }

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

  void _showNotification(OrderStatusUpdate update) {
    setState(() {
      _latestUpdate = update;
      _isVisible = true;
    });
    _animationController?.forward();

    // Auto-hide after 5 seconds
    Future.delayed(const Duration(seconds: 5), () {
      _hideNotification();
    });
  }

  void _hideNotification() {
    _animationController?.reverse().then((_) {
      if (mounted) {
        setState(() {
          _isVisible = false;
          _latestUpdate = null;
        });
      }
    });
  }

  Color _getStatusColor(int statusId) {
    switch (statusId) {
      case 1: // Submitted
        return Colors.blue;
      case 2: // Preparing
        return Colors.orange;
      case 3: // Ready
        return Colors.green;
      case 4: // Completed
        return Colors.purple;
      default:
        return Colors.grey;
    }
  }

  IconData _getStatusIcon(int statusId) {
    switch (statusId) {
      case 1: // Submitted
        return Icons.receipt_long;
      case 2: // Preparing
        return Icons.restaurant;
      case 3: // Ready
        return Icons.notifications_active;
      case 4: // Completed
        return Icons.check_circle;
      default:
        return Icons.info;
    }
  }

  @override
  Widget build(BuildContext context) {
    // Listen for status updates
    context.select<AppState, int?>((state) => state.activeOrderStatusId);

    if (!_isVisible || _latestUpdate == null) {
      return const SizedBox.shrink();
    }

    final statusColor = _getStatusColor(_latestUpdate!.statusId);
    final statusIcon = _getStatusIcon(_latestUpdate!.statusId);

    return SlideTransition(
      position: Tween<Offset>(
        begin: const Offset(0, -1),
        end: Offset.zero,
      ).animate(_slideAnimation!),
      child: Material(
        elevation: 8,
        color: Colors.transparent,
        child: Container(
          width: double.infinity,
          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
          decoration: BoxDecoration(
            color: statusColor,
            boxShadow: [
              BoxShadow(
                color: Colors.black.withOpacity(0.2),
                blurRadius: 8,
                offset: const Offset(0, 2),
              ),
            ],
          ),
          child: SafeArea(
            child: Row(
              children: [
                Icon(
                  statusIcon,
                  color: Colors.white,
                  size: 28,
                ),
                const SizedBox(width: 12),
                Expanded(
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    mainAxisSize: MainAxisSize.min,
                    children: [
                      Text(
                        _latestUpdate!.statusName,
                        style: const TextStyle(
                          color: Colors.white,
                          fontSize: 16,
                          fontWeight: FontWeight.bold,
                        ),
                      ),
                      const SizedBox(height: 4),
                      Text(
                        _latestUpdate!.message,
                        style: const TextStyle(
                          color: Colors.white,
                          fontSize: 14,
                        ),
                      ),
                    ],
                  ),
                ),
                IconButton(
                  icon: const Icon(Icons.close, color: Colors.white),
                  onPressed: _hideNotification,
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }

  /// Static method to show notification from anywhere
  static void show(BuildContext context, OrderStatusUpdate update) {
    final state = context.findAncestorStateOfType<_OrderStatusNotificationState>();
    state?._showNotification(update);
  }
}

/// Global key to access notification from anywhere
final GlobalKey<_OrderStatusNotificationState> orderNotificationKey = GlobalKey();