Public/apps/native/lib/widgets/auth_image.dart

import 'dart:typed_data';

import 'package:flutter/material.dart';

import '../api/oa_client.dart';
import '../theme.dart';

class AuthImage extends StatefulWidget {
  const AuthImage({
    super.key,
    required this.api,
    required this.fileId,
    this.width,
    this.height,
    this.fit = BoxFit.cover,
    this.placeholder,
  });
  final OaClient api;
  final String fileId;
  final double? width;
  final double? height;
  final BoxFit fit;
  final Widget? placeholder;

  @override
  State<AuthImage> createState() => _AuthImageState();
}

class _AuthImageState extends State<AuthImage> {
  Uint8List? _bytes;
  bool _fail = false;

  @override
  void initState() {
    super.initState();
    _bytes = widget.api.peekFile(widget.fileId);
    if (_bytes == null) _load();
  }

  @override
  void didUpdateWidget(covariant AuthImage oldWidget) {
    super.didUpdateWidget(oldWidget);
    if (oldWidget.fileId != widget.fileId) {
      _bytes = widget.api.peekFile(widget.fileId);
      _fail = false;
      if (_bytes == null) _load();
    }
  }

  Future<void> _load() async {
    try {
      final b = await widget.api.fileBytes(widget.fileId);
      if (!mounted) return;
      setState(() {
        _bytes = b;
        _fail = b == null;
      });
    } catch (_) {
      if (mounted) setState(() => _fail = true);
    }
  }

  @override
  Widget build(BuildContext context) {
    if (_bytes != null) {
      return Image.memory(
        _bytes!,
        width: widget.width,
        height: widget.height,
        fit: widget.fit,
        gaplessPlayback: true,
        filterQuality: FilterQuality.medium,
      );
    }
    return SizedBox(
      width: widget.width,
      height: widget.height,
      child: widget.placeholder ??
          ColoredBox(
            color: const Color(0xFFEDEDED),
            child: _fail ? const Icon(Icons.broken_image_outlined, color: kMute, size: 18) : const SizedBox.shrink(),
          ),
    );
  }
}