import 'package:flutter/material.dart';
import '../../../core/theme/colors.dart';

/// Widget to display error messages in a user-friendly way
class ErrorDisplay extends StatelessWidget {
  final String? errorMessage;
  final VoidCallback? onRetry;
  final Widget? child;

  const ErrorDisplay({
    super.key,
    required this.errorMessage,
    this.onRetry,
    this.child,
  });

  @override
  Widget build(BuildContext context) {
    if (errorMessage == null) {
      return child ?? const SizedBox.shrink();
    }

    return Container(
      padding: const EdgeInsets.all(16),
      decoration: BoxDecoration(
        gradient: LinearGradient(
          colors: [
            AppColors.error.withOpacity(0.1),
            AppColors.error.withOpacity(0.05),
          ],
        ),
        borderRadius: BorderRadius.circular(12),
        border: Border.all(
          color: AppColors.error.withOpacity(0.3),
          width: 1,
        ),
      ),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          Row(
            children: [
              Icon(
                Icons.error_outline,
                color: AppColors.error,
                size: 20,
              ),
              const SizedBox(width: 8),
              Expanded(
                child: Text(
                  errorMessage!,
                  style: const TextStyle(
                    color: AppColors.textPrimary,
                    fontSize: 14,
                    fontWeight: FontWeight.w500,
                  ),
                ),
              ),
            ],
          ),
          if (onRetry != null) ...[
            const SizedBox(height: 12),
            SizedBox(
              width: double.infinity,
              child: ElevatedButton(
                onPressed: onRetry,
                style: ElevatedButton.styleFrom(
                  backgroundColor: AppColors.error,
                  foregroundColor: AppColors.textInverted,
                  padding: const EdgeInsets.symmetric(vertical: 12),
                  shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(8),
                  ),
                ),
                child: const Text(
                  'Retry',
                  style: TextStyle(
                    fontWeight: FontWeight.w600,
                    fontSize: 14,
                  ),
                ),
              ),
            ),
          ],
        ],
      ),
    );
  }
}

/// Small inline error message for compact spaces
class InlineError extends StatelessWidget {
  final String message;
  final VoidCallback? onRetry;

  const InlineError({
    super.key,
    required this.message,
    this.onRetry,
  });

  @override
  Widget build(BuildContext context) {
    return Row(
      mainAxisSize: MainAxisSize.min,
      children: [
        Icon(
          Icons.error_outline,
          color: AppColors.error,
          size: 16,
        ),
        const SizedBox(width: 6),
        Flexible(
          child: Text(
            message,
            style: const TextStyle(
              color: AppColors.error,
              fontSize: 12,
              fontWeight: FontWeight.w500,
            ),
          ),
        ),
        if (onRetry != null) ...[
          const SizedBox(width: 8),
          GestureDetector(
            onTap: onRetry,
            child: Container(
              padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
              decoration: BoxDecoration(
                color: AppColors.error.withOpacity(0.1),
                borderRadius: BorderRadius.circular(4),
                border: Border.all(
                  color: AppColors.error.withOpacity(0.3),
                  width: 1,
                ),
              ),
              child: const Text(
                'Retry',
                style: TextStyle(
                  color: AppColors.error,
                  fontSize: 11,
                  fontWeight: FontWeight.w600,
                ),
              ),
            ),
          ),
        ],
      ],
    );
  }
}

/// Snackbar helper to show error messages
class ErrorSnackbar {
  static void show(
    BuildContext context,
    String message, {
    VoidCallback? action,
    String? actionLabel,
    Duration duration = const Duration(seconds: 4),
  }) {
    final snackBar = SnackBar(
      content: Row(
        children: [
          const Icon(Icons.error_outline, color: Colors.white),
          const SizedBox(width: 12),
          Expanded(child: Text(message)),
        ],
      ),
      backgroundColor: AppColors.error,
      duration: duration,
      action: action != null && actionLabel != null
          ? SnackBarAction(
              label: actionLabel,
              textColor: Colors.white,
              onPressed: action,
            )
          : null,
      behavior: SnackBarBehavior.floating,
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(8),
      ),
      margin: const EdgeInsets.all(16),
    );

    ScaffoldMessenger.of(context)
      ..hideCurrentSnackBar()
      ..showSnackBar(snackBar);
  }

  static void showInfo(
    BuildContext context,
    String message, {
    Duration duration = const Duration(seconds: 3),
  }) {
    final snackBar = SnackBar(
      content: Row(
        children: [
          const Icon(Icons.info_outline, color: Colors.white),
          const SizedBox(width: 12),
          Expanded(child: Text(message)),
        ],
      ),
      backgroundColor: AppColors.cyan,
      duration: duration,
      behavior: SnackBarBehavior.floating,
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(8),
      ),
      margin: const EdgeInsets.all(16),
    );

    ScaffoldMessenger.of(context)
      ..hideCurrentSnackBar()
      ..showSnackBar(snackBar);
  }
}