import 'package:flame_lua_runtime/runtime/events/runtime_event_gate.dart';
import 'package:flame_lua_runtime/runtime/lifecycle/runtime_session.dart';
import 'package:flame_lua_runtime/runtime/models/runtime_event.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  group('RuntimeEventGate', () {
    test('attaches session id without exposing lifecycle fields to Lua', () {
      final session = RuntimeSession(gameId: 'game')..activate();
      final gate = RuntimeEventGate(
        session: session,
        isScopeAlive: (_) => true,
      );

      final event = gate.attachSession(const RuntimeEvent(type: 'tap'));

      expect(event.sessionId, session.id);
      expect(event.toMap(), {'type': 'tap'});
    });

    test('accepts only active matching sessions', () {
      final session = RuntimeSession(gameId: 'game')..activate();
      final gate = RuntimeEventGate(
        session: session,
        isScopeAlive: (_) => true,
      );

      expect(
        gate.accepts(RuntimeEvent(type: 'tap', sessionId: session.id)),
        isTrue,
      );
      expect(
        gate.accepts(RuntimeEvent(type: 'tap', sessionId: session.id + 1)),
        isFalse,
      );

      session.beginDisposing();
      expect(
        gate.accepts(RuntimeEvent(type: 'tap', sessionId: session.id)),
        isFalse,
      );
    });

    test('drops dead scopes and stale epochs', () {
      final session = RuntimeSession(gameId: 'game')..activate();
      final gate = RuntimeEventGate(
        session: session,
        isScopeAlive: (scope) => scope == 'alive',
        isNodeEpochAlive: (id, epoch) => epoch == 2,
      );

      expect(
        gate.accepts(
          RuntimeEvent(
            type: 'tap',
            sessionId: session.id,
            scope: 'alive',
            scopeEpoch: 2,
            target: 'button',
            targetEpoch: 2,
          ),
        ),
        isTrue,
      );
      expect(
        gate.accepts(
          RuntimeEvent(type: 'tap', sessionId: session.id, scope: 'dead'),
        ),
        isFalse,
      );
      expect(
        gate.accepts(
          RuntimeEvent(
            type: 'tap',
            sessionId: session.id,
            target: 'button',
            targetEpoch: 1,
          ),
        ),
        isFalse,
      );
    });
  });
}