// Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:test/test.dart';
import 'package:test_common/logging.dart';
import 'package:test_common/test_sdk_configuration.dart';
import 'package:vm_service/vm_service.dart';

import '../../fixtures/context.dart';
import '../../fixtures/project.dart';
import '../../fixtures/utilities.dart';
import 'test_inspector.dart';

void runTests({
  required TestSdkConfigurationProvider provider,
  required CompilationMode compilationMode,
  required bool canaryFeatures,
  required NullSafety nullSafetyMode,
  required bool debug,
}) {
  final project = nullSafetyMode == NullSafety.sound
      ? TestProject.testPackageWithSoundNullSafety()
      : TestProject.testPackageWithWeakNullSafety();
  final context = TestContext(project, provider);

  late VmService service;
  late Stream<Event> stream;
  late String isolateId;
  late ScriptRef mainScript;

  final testInspector = TestInspector(context);

  onBreakPoint(breakPointId, body) => testInspector.onBreakPoint(
        stream,
        isolateId,
        mainScript,
        breakPointId,
        body,
      );

  getInstance(frame, expression) =>
      testInspector.getInstance(isolateId, frame, expression);

  getObject(instanceId) => service.getObject(isolateId, instanceId);

  getInstanceRef(frame, expression) =>
      testInspector.getInstanceRef(isolateId, frame, expression);

  getFields(instanceRef, {offset, count}) => testInspector
      .getFields(isolateId, instanceRef, offset: offset, count: count);

  group('$nullSafetyMode |', () {
    group('$compilationMode |', () {
      setUpAll(() async {
        setCurrentLogWriter(debug: debug);
        await context.setUp(
          testSettings: TestSettings(
            compilationMode: compilationMode,
            enableExpressionEvaluation: true,
            verboseCompiler: debug,
            canaryFeatures: canaryFeatures,
            experiments: ['records'],
          ),
        );
        service = context.debugConnection.vmService;

        final vm = await service.getVM();
        isolateId = vm.isolates!.first.id!;
        final scripts = await service.getScripts(isolateId);

        await service.streamListen('Debug');
        stream = service.onEvent('Debug');

        mainScript = scripts.scripts!
            .firstWhere((each) => each.uri!.contains('main.dart'));
      });

      tearDownAll(context.tearDown);

      setUp(() => setCurrentLogWriter(debug: debug));
      tearDown(() async {
        try {
          await service.resume(isolateId);
        } catch (_) {}
      });

      group('Library |', () {
        test('classes', () async {
          const libraryId = 'org-dartlang-app:///web/main.dart';
          final library = await getObject(libraryId);

          expect(
            library,
            isA<Library>().having(
              (l) => l.classes,
              'classes',
              [
                matchClassRef(name: 'MainClass', libraryId: libraryId),
                matchClassRef(name: 'EnclosedClass', libraryId: libraryId),
                matchClassRef(name: 'ClassWithMethod', libraryId: libraryId),
                matchClassRef(name: 'EnclosingClass', libraryId: libraryId),
              ],
            ),
          );
        });
      });

      group('Class |', () {
        test('name and library', () async {
          const libraryId = 'org-dartlang-app:///web/main.dart';
          const className = 'MainClass';
          final cls = await getObject('classes|$libraryId|$className');

          expect(cls, matchClass(name: className, libraryId: libraryId));
        });
      });

      group('Object |', () {
        test('type and fields', () async {
          await onBreakPoint('printFieldMain', (event) async {
            final frame = event.topFrame!.index!;
            final instanceRef = await getInstanceRef(frame, 'instance');

            final instanceId = instanceRef.id!;
            expect(
              await getObject(instanceId),
              matchPlainInstance(
                libraryId: 'org-dartlang-app:///web/main.dart',
                type: 'MainClass',
              ),
            );

            expect(await getFields(instanceRef), {'_field': 1, 'field': 2});

            // Offsets and counts are ignored for plain object fields.

            // DevTools calls [VmServiceInterface.getObject] with offset=0
            // and count=0 and expects all fields to be returned.
            expect(
              await getFields(instanceRef, offset: 0, count: 0),
              {'_field': 1, 'field': 2},
            );
            expect(
              await getFields(instanceRef, offset: 0),
              {'_field': 1, 'field': 2},
            );
            expect(
              await getFields(instanceRef, offset: 0, count: 1),
              {'_field': 1, 'field': 2},
            );
            expect(
              await getFields(instanceRef, offset: 1),
              {'_field': 1, 'field': 2},
            );
            expect(
              await getFields(instanceRef, offset: 1, count: 0),
              {'_field': 1, 'field': 2},
            );
            expect(
              await getFields(instanceRef, offset: 1, count: 3),
              {'_field': 1, 'field': 2},
            );
          });
        });

        test('field access', () async {
          await onBreakPoint('printFieldMain', (event) async {
            final frame = event.topFrame!.index!;
            expect(
              await getInstance(frame, r'instance.field'),
              matchPrimitiveInstance(kind: InstanceKind.kDouble, value: 2),
            );

            expect(
              await getInstance(frame, r'instance._field'),
              matchPrimitiveInstance(kind: InstanceKind.kDouble, value: 1),
            );
          });
        });
      });

      group('List |', () {
        test('type and fields', () async {
          await onBreakPoint('printList', (event) async {
            final frame = event.topFrame!.index!;
            final instanceRef = await getInstanceRef(frame, 'list');

            final instanceId = instanceRef.id!;
            expect(await getObject(instanceId), matchListInstance(type: 'int'));

            expect(
              await getFields(instanceRef),
              {0: 0.0, 1: 1.0, 2: 2.0},
            );
            expect(await getFields(instanceRef, offset: 1, count: 0), {});
            expect(
              await getFields(instanceRef, offset: 0),
              {0: 0.0, 1: 1.0, 2: 2.0},
            );
            expect(
              await getFields(instanceRef, offset: 0, count: 1),
              {0: 0.0},
            );
            expect(
              await getFields(instanceRef, offset: 1),
              {0: 1.0, 1: 2.0},
            );
            expect(
              await getFields(instanceRef, offset: 1, count: 1),
              {0: 1.0},
            );
            expect(
              await getFields(instanceRef, offset: 1, count: 3),
              {0: 1.0, 1: 2.0},
            );
            expect(await getFields(instanceRef, offset: 3, count: 3), {});
          });
        });

        test('Element access', () async {
          await onBreakPoint('printList', (event) async {
            final frame = event.topFrame!.index!;
            expect(
              await getInstance(frame, r'list[0]'),
              matchPrimitiveInstance(kind: InstanceKind.kDouble, value: 0),
            );

            expect(
              await getInstance(frame, r"list[1]"),
              matchPrimitiveInstance(kind: InstanceKind.kDouble, value: 1),
            );

            expect(
              await getInstance(frame, r"list[2]"),
              matchPrimitiveInstance(kind: InstanceKind.kDouble, value: 2),
            );
          });
        });
      });

      group('Map |', () {
        test('type and fields', () async {
          await onBreakPoint('printMap', (event) async {
            final frame = event.topFrame!.index!;
            final instanceRef = await getInstanceRef(frame, 'map');

            final instanceId = instanceRef.id!;
            expect(
              await getObject(instanceId),
              matchMapInstance(type: 'IdentityMap<String, int>'),
            );

            expect(await getFields(instanceRef), {'a': 1, 'b': 2, 'c': 3});

            expect(await getFields(instanceRef, offset: 1, count: 0), {});
            expect(
              await getFields(instanceRef, offset: 0),
              {'a': 1, 'b': 2, 'c': 3},
            );
            expect(await getFields(instanceRef, offset: 0, count: 1), {'a': 1});
            expect(await getFields(instanceRef, offset: 1), {'b': 2, 'c': 3});
            expect(await getFields(instanceRef, offset: 1, count: 1), {'b': 2});
            expect(
              await getFields(instanceRef, offset: 1, count: 3),
              {'b': 2, 'c': 3},
            );
            expect(await getFields(instanceRef, offset: 3, count: 3), {});
          });
        });

        test('Element access', () async {
          await onBreakPoint('printMap', (event) async {
            final frame = event.topFrame!.index!;
            expect(
              await getInstance(frame, r"map['a']"),
              matchPrimitiveInstance(kind: InstanceKind.kDouble, value: 1),
            );

            expect(
              await getInstance(frame, r"map['b']"),
              matchPrimitiveInstance(kind: InstanceKind.kDouble, value: 2),
            );

            expect(
              await getInstance(frame, r"map['c']"),
              matchPrimitiveInstance(kind: InstanceKind.kDouble, value: 3),
            );
          });
        });
      });

      group('Set |', () {
        test('type and fields', () async {
          await onBreakPoint('printSet', (event) async {
            final frame = event.topFrame!.index!;
            final instanceRef = await getInstanceRef(frame, 'mySet');

            final instanceId = instanceRef.id!;
            expect(
              await getObject(instanceId),
              matchSetInstance(type: '_HashSet<int>'),
            );

            expect(
              await getFields(instanceRef),
              {0: 1.0, 1: 4.0, 2: 5.0, 3: 7.0},
            );
            expect(
              await getFields(instanceRef, offset: 0),
              {0: 1.0, 1: 4.0, 2: 5.0, 3: 7.0},
            );
            expect(
              await getFields(instanceRef, offset: 1, count: 2),
              {0: 4.0, 1: 5.0},
            );
            expect(
              await getFields(instanceRef, offset: 2),
              {0: 5.0, 1: 7.0},
            );
            expect(
              await getFields(instanceRef, offset: 2, count: 10),
              {0: 5.0, 1: 7.0},
            );
            expect(await getFields(instanceRef, offset: 1, count: 0), {});
            expect(await getFields(instanceRef, offset: 10, count: 2), {});
          });
        });

        test('Element access', () async {
          await onBreakPoint('printSet', (event) async {
            final frame = event.topFrame!.index!;
            expect(
              await getInstance(frame, r"mySet.first"),
              matchPrimitiveInstance(kind: InstanceKind.kDouble, value: 1),
            );
            expect(
              await getInstance(frame, r"mySet.last"),
              matchPrimitiveInstance(kind: InstanceKind.kDouble, value: 7),
            );
          });
        });
      });
    });
  });
}