"""Vacuum cuts in the real pixel frame loop with active browser workers and hardware graphics."""
import pathlib
import sys
sys.path.insert(0, str(pathlib.Path(__file__).resolve().parents[1] / 'tools'))
from use_venv import ensure_playwright; ensure_playwright()
from browser import launch, consume_gpu_option, capabilities
consume_gpu_option()
ROOT = pathlib.Path(__file__).resolve().parents[1]
with launch(viewport={'width': 1440, 'height': 760}) as (_, page, url):
    errors = []
    page.on('pageerror', lambda e: errors.append(str(e)))
    page.goto(url)
    caps = capabilities(page)
    assert caps['isolated'] and caps['webgpu'], caps
    print('GPU', caps, flush=True)
    page.evaluate("""() => {
      const enter = enterGame; enterGame = function() { enter(); GAME.paused = true; };
      SET.workerCap=2; SET.fog=false; SET.lighting='off'; SET.cameraLead=false; SET.autosave=0;
      startNewWorld(7,768,600);
    }""")
    page.wait_for_function('GAME.running', timeout=60000)
    page.evaluate((ROOT / 'test/pile-cut.js').read_text())
    page.evaluate("""() => {
      pileCutWorld(); pileCutSetup(160,false); pileCutSetup(416,true);
      bot.x=700;bot.y=100;for(let k=0;k<600;k++)simTick();
      renderDirty.fill(1);GPU.world=null;SM.surf=-1;
    }""")
    page.evaluate('startThreads()')
    page.evaluate("""() => {
      // Tiny isolated fixtures otherwise run inline below the production dispatch threshold.
      simPool.force=true;
      window.cutTicks=0;window.cutEnd=0;
      const tool=toolTick;toolTick=()=>{
        tool();
        if(cutEnd && tick===cutEnd+180) window.cutResult={tick,cutEnd,
          stone:pileCutProfile(160),mixed:pileCutProfile(416),helpers:simPool.activeMax};
        if(cutTicks<140){pileCutStroke(cutTicks%2?416:160);cutTicks++;if(cutTicks===140)cutEnd=tick+1;}
      };
      document.querySelectorAll('.card,.toast').forEach(e=>e.remove());
      $('hud').hidden=true;GAME.hidePreviews=true;SET.zoom=3;resizeRender();
      bot.x=288-bot.w/2;bot.y=190-bot.h/2;snapCamera();
      // Keep both heaps in view while the bot follows each vacuum stroke.
      updateCamera=()=>{}; GAME.paused=false;
    }""")
    page.wait_for_function('cutEnd>0', timeout=30000)
    for delay in (0, 60, 120, 180):
        page.wait_for_function(f'tick>=cutEnd+{delay}', timeout=15000)
        result = page.evaluate('({tick,cutEnd,stone:pileCutProfile(160),mixed:pileCutProfile(416),helpers:simPool.activeMax})')
        print('profile', delay, result, flush=True)
        page.screenshot(path=str(ROOT / f'shots/t93b-time-{delay}.png'))
    page.wait_for_function('window.cutResult', timeout=15000)
    result = page.evaluate('cutResult')
    page.evaluate('GAME.paused=true')
    page.screenshot(path=str(ROOT / 'shots/t93b-after.png'))
    assert result['helpers'] > 0, result
    assert result['stone']['cliff'] <= 2 and result['mixed']['cliff'] <= 2, result
    assert not errors, errors
    print('PASS vacuum-cut stone and mixed faces slump within 180 real-loop ticks with browser helpers')