import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/material.dart';
import 'package:stream_chat/stream_chat.dart';

import '../stream_chat_flutter.dart';

class UserAvatar extends StatelessWidget {
  const UserAvatar({
    Key key,
    @required this.user,
    this.constraints,
    this.onTap,
  }) : super(key: key);

  final User user;
  final BoxConstraints constraints;
  final void Function(User) onTap;

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
      onTap: () {
        if (onTap != null) {
          onTap(user);
        }
      },
      child: ClipRRect(
        borderRadius: StreamChatTheme.of(context)
            .ownMessageTheme
            .avatarTheme
            .borderRadius,
        child: Container(
          constraints: constraints ??
              StreamChatTheme.of(context)
                  .ownMessageTheme
                  .avatarTheme
                  .constraints,
          decoration: BoxDecoration(
            color: StreamChatTheme.of(context).accentColor,
          ),
          child: user.extraData?.containsKey('image') ?? false
              ? CachedNetworkImage(
                  imageUrl: user.extraData['image'],
                  errorWidget: (_, __, ___) {
                    return Center(
                      child: Text(
                        user.extraData?.containsKey('name') ?? false
                            ? user.extraData['name'][0]
                            : '',
                        style: TextStyle(
                          color: Colors.white,
                          fontWeight: FontWeight.bold,
                        ),
                      ),
                    );
                  },
                  fit: BoxFit.cover,
                )
              : StreamChatTheme.of(context).defaultUserImage(context, user),
        ),
      ),
    );
  }
}