import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:zenxercise/src/exercises/exercise_library.dart';
import 'package:zenxercise/src/modes/mode.dart';

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

  const json = '''[
    {"id":"Calf_Stretch","name":"Calf Stretch","mode":"stretching","category":"stretching","level":"beginner",
     "equipment":null,"force":"static","mechanic":null,"primaryMuscles":["calves"],"secondaryMuscles":[],
     "instructions":["Lean forward."],"imageCount":2},
    {"id":"Barbell_Squat","name":"Barbell Squat","mode":"workout","category":"strength","level":"intermediate",
     "equipment":"barbell","force":"push","mechanic":"compound","primaryMuscles":["quadriceps"],
     "secondaryMuscles":["glutes","hamstrings"],"instructions":["Squat."],"imageCount":0}
  ]''';

  test('splits Exercises by Mode and finds them by id', () {
    final library = ExerciseLibrary.fromJson(json);

    expect(library.forMode(Mode.stretching).map((e) => e.id), ['Calf_Stretch']);
    expect(library.forMode(Mode.workout).map((e) => e.id), ['Barbell_Squat']);
    expect(library.byId('Barbell_Squat')!.secondaryMuscles, ['glutes', 'hamstrings']);
    expect(library.byId('Missing'), isNull);
  });

  test('an Exercise points at its flattened WebP images', () {
    final calf = ExerciseLibrary.fromJson(json).byId('Calf_Stretch')!;

    expect(calf.images, ['assets/exercises/images/Calf_Stretch_0.webp', 'assets/exercises/images/Calf_Stretch_1.webp']);
  });

  test('the bundled library holds 123 stretches and 753 workout Exercises whose images exist', () async {
    final library = await ExerciseLibrary.load(rootBundle);

    expect(library.forMode(Mode.stretching), hasLength(123));
    expect(library.forMode(Mode.workout), hasLength(753));
    final anyImage = library.forMode(Mode.stretching).firstWhere((e) => e.imageCount == 2).images.last;
    expect((await rootBundle.load(anyImage)).lengthInBytes, greaterThan(0));
  });
}