import 'package:flutter_test/flutter_test.dart';
import 'package:social_app/features/chat/data/tools/route_navigation_tool.dart';
import 'package:social_app/features/chat/data/tools/tool_registry.dart';

void main() {
  setUp(() {
    ToolRegistry.initialize();
  });

  tearDown(() {
    RouteNavigationTool.instance.clearNavigator();
  });

  group('getTool', () {
    test('returns tool definition for front.navigate_to_route', () {
      final tool = ToolRegistry.getTool('front.navigate_to_route');

      expect(tool, isNotNull);
      expect(tool!.name, 'front.navigate_to_route');
      expect(tool.description, isNotEmpty);
    });

    test('returns null for unknown tool', () {
      expect(ToolRegistry.getTool('unknown_tool'), isNull);
    });
  });

  group('validateArgs', () {
    test('returns error for empty args (missing target)', () {
      final result = ToolRegistry.validateArgs('front.navigate_to_route', {});

      expect(result.ok, false);
      expect(result.error, contains('target'));
    });

    test('returns ok: true for valid args', () {
      final result = ToolRegistry.validateArgs('front.navigate_to_route', {
        'target': '/settings',
      });

      expect(result.ok, true);
      expect(result.error, isNull);
    });

    test('returns error for unknown tool', () {
      final result = ToolRegistry.validateArgs('unknown_tool', {});

      expect(result.ok, false);
      expect(result.error, contains('Tool not found'));
    });
  });

  group('execute', () {
    test('throws ToolNotFoundException for unknown tool', () async {
      expect(
        () => ToolRegistry.execute('unknown_tool', {}),
        throwsA(isA<ToolNotFoundException>()),
      );
    });

    test('front.navigate_to_route rejects disallowed target', () async {
      final result = await ToolRegistry.execute('front.navigate_to_route', {
        'target': '/admin',
      });

      expect(result['ok'], false);
      expect(result['error'], contains('not allowed'));
    });

    test(
      'front.navigate_to_route executes allowed target when navigator is bound',
      () async {
        String? navigatedTo;
        bool replaced = false;
        RouteNavigationTool.instance.bindNavigator((target, {replace = false}) {
          navigatedTo = target;
          replaced = replace;
        });

        final result = await ToolRegistry.execute('front.navigate_to_route', {
          'target': '/settings',
          'replace': true,
        });

        expect(result['ok'], true);
        expect(navigatedTo, '/settings');
        expect(replaced, true);
      },
    );
  });

  group('getAllTools', () {
    test('returns list of tool definitions', () {
      final tools = ToolRegistry.getAllTools();

      expect(tools, isNotEmpty);
      expect(tools.any((t) => t.name == 'front.navigate_to_route'), true);
      expect(tools.any((t) => t.name == 'create_calendar_event'), false);
    });
  });
}