import test from 'node:test';
import assert from 'node:assert/strict';
import { SceneFlow } from '../../YouleNexus/assets/scripts/platform-login/scene-flow.ts';

test('repeated lobby notifications share one pending transition and bind once',async()=>{
  const calls:string[]=[];
  const flow=new SceneFlow(async name=>{calls.push(name);});
  await Promise.all([flow.enterOnce('Lobby',()=>{calls.push('bind');}),flow.enterOnce('Lobby',()=>{calls.push('duplicate');})]);
  await flow.enterOnce('Lobby',()=>{calls.push('duplicate');});
  assert.deepEqual(calls,['Lobby','bind']);
  await flow.enter('Login',()=>{});
  await flow.enterOnce('Lobby',()=>{calls.push('new');});
  assert.deepEqual(calls,['Lobby','bind','Login','Lobby','new']);
});
test('scene transitions are sequential and disposal prevents late scene binding',async()=>{
  const calls:string[]=[];let finish!:()=>void;
  const flow=new SceneFlow(async name=>{calls.push(name);if(name==='Loading')await new Promise<void>(r=>finish=r);});
  const loading=flow.enter('Loading',()=>{calls.push('bindLoading');});
  const login=flow.enter('Login',()=>{calls.push('bindLogin');});
  await Promise.resolve();assert.deepEqual(calls,['Loading']);finish();await loading;await login;
  assert.deepEqual(calls,['Loading','bindLoading','Login','bindLogin']);
  flow.dispose();await assert.rejects(flow.enter('Login',()=>{}),/disposed/);
});