import 'dart:io';

import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';

/// Every file under `assets/content/` must be loadable through `rootBundle`,
/// which is the only thing that proves it is DECLARED in pubspec.yaml and
/// therefore actually ships.
///
/// Found by reading the installed APK: it contained ZERO entries under
/// `assets/content/`, while `assets/icons/alarmas/*` was present. pubspec
/// declared `assets/content/` — and Flutter does NOT recurse: naming a
/// directory includes the files sitting directly in it, never its
/// subdirectories. All of this content lives in subdirectories
/// (`onboarding/`, `updates/<locale>/`), so the entire onboarding and
/// release-notes feature had never shipped in any build. On the device it
/// surfaced on every launch as:
///
///   Unable to load asset: "assets/content/onboarding/en.md"
///
/// with the file plainly present on disk.
///
/// Same family as the drawables the resource shrinker deleted: a reference by
/// NAME that nothing validates at compile time, so it fails only on a device.
/// A test that merely checked `File(...).existsSync()` would have stayed green
/// throughout — the files were never missing. Loading through `rootBundle` is
/// what makes it a real guard, because that is the path the app itself takes.
void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

  final directorio = Directory('assets/content');
  final ficheros =
      directorio
          .listSync(recursive: true)
          .whereType<File>()
          .map((f) => f.path.replaceAll(r'\', '/'))
          .toList()
        ..sort();

  test('hay contenido que comprobar (si no, este test sería vacuo)', () {
    expect(ficheros, isNotEmpty);
  });

  for (final ruta in ficheros) {
    test('$ruta está declarado y se puede cargar', () async {
      await expectLater(
        rootBundle.loadString(ruta),
        completes,
        reason:
            'existe en disco pero rootBundle no lo encuentra: falta declarar '
            'su directorio en pubspec.yaml, y no viajará en el APK',
      );
    });
  }
}