Melo/lib/shared/cover.dart

import 'dart:io';

import 'package:flutter/material.dart';

import 'theme.dart';

/// Cover-Bild aus einer file-URI, mit Noten-Platzhalter als Fallback.
class CoverImage extends StatelessWidget {
  const CoverImage({
    super.key,
    required this.artUri,
    this.size,
    this.radius = MeloRadius.element,
  });
  final Uri? artUri;
  final double? size;
  final double radius;

  @override
  Widget build(BuildContext context) {
    final placeholder = Container(
      width: size,
      height: size,
      decoration: BoxDecoration(
        color: MeloTheme.surface,
        // Haarlinie statt Schatten: auf Schwarz trennt ein Umriss die
        // Fläche sauber, ein Schatten wäre unsichtbar.
        border: radius > 0 ? MeloTheme.hairline : null,
        borderRadius: BorderRadius.circular(radius),
      ),
      child: LayoutBuilder(
        builder: (_, c) {
          final s = size ?? (c.hasBoundedWidth ? c.maxWidth : 48.0);
          return Icon(Icons.music_note, size: s * 0.4, color: MeloTheme.red);
        },
      ),
    );
    Widget child = placeholder;
    if (artUri != null && artUri!.scheme == 'file') {
      child = Image.file(
        File(artUri!.toFilePath()),
        width: size,
        height: size,
        fit: BoxFit.cover,
        errorBuilder: (_, _, _) => placeholder,
      );
    }
    return ClipRRect(borderRadius: BorderRadius.circular(radius), child: child);
  }
}