import 'package:flutter/material.dart';

import '../theme/app_theme.dart';

/// User profile photo with a graceful fallback when the URL fails (e.g.
/// Google `lh3.googleusercontent.com` returning HTTP 429).
class ProfileAvatar extends StatelessWidget {
  const ProfileAvatar({
    super.key,
    this.photoUrl,
    this.radius = 36,
  });

  final String? photoUrl;
  final double radius;

  @override
  Widget build(BuildContext context) {
    final String? url = photoUrl?.trim();
    if (url == null || url.isEmpty) {
      return _fallbackAvatar();
    }

    final double size = radius * 2;
    return ClipOval(
      child: SizedBox(
        width: size,
        height: size,
        child: Image.network(
          url,
          width: size,
          height: size,
          fit: BoxFit.cover,
          // Prevents NetworkImageLoadException from bubbling to the console
          // when Google rate-limits profile photo URLs.
          errorBuilder: (_, Object error, StackTrace? stackTrace) {
            return _fallbackContents();
          },
          loadingBuilder: (
            BuildContext context,
            Widget child,
            ImageChunkEvent? progress,
          ) {
            if (progress == null) {
              return child;
            }
            return ColoredBox(
              color: AppColors.surfaceElevated,
              child: Center(
                child: SizedBox(
                  width: radius * 0.55,
                  height: radius * 0.55,
                  child: CircularProgressIndicator(
                    strokeWidth: 2,
                    color: AppColors.accent.withValues(alpha: 0.7),
                  ),
                ),
              ),
            );
          },
        ),
      ),
    );
  }

  Widget _fallbackAvatar() {
    return CircleAvatar(
      radius: radius,
      backgroundColor: AppColors.surfaceElevated,
      child: _fallbackContents(),
    );
  }

  Widget _fallbackContents() {
    return Icon(
      Icons.person,
      size: radius,
      color: AppColors.accent.withValues(alpha: 0.85),
    );
  }
}