"""Small synthetic real gateway probe; no chat sender or client config writes."""
import base64
import io
import json
import sys
import time
import uuid
from pathlib import Path
from urllib import request,error

root=Path(sys.argv[1]).resolve()
sys.path.insert(0,str(root))
import backend_client
settings=backend_client.load_settings()
gateway=settings.get('gateway') or {}
token=backend_client.desktop_access_token()
mode=sys.argv[2]
nonce='SYNTHETIC-AUDIT-'+uuid.uuid4().hex[:10]
if mode=='context':
    messages=[{'role':'system','content':'你是测试助手。这是合成接口验收，不是真实客户对话。只回答用户所问，不使用工具。'},
              {'role':'user','content':'本次测试的包裹取件码为 '+nonce+'，请记住。'},
              {'role':'assistant','content':'已记住你提供的测试取件码。'},
              {'role':'user','content':'请问我刚才提供的取件码是什么？只回答完整取件码。'}]
else:
    from PIL import Image,ImageDraw,ImageFont
    image=Image.new('RGB',(1000,330),'white')
    draw=ImageDraw.Draw(image)
    font=ImageFont.truetype('C:/Windows/Fonts/arial.ttf',36)
    draw.text((35,45),'SYNTHETIC VISION TEST',fill='black',font=font)
    draw.text((35,150),nonce,fill='black',font=font)
    buffer=io.BytesIO();image.save(buffer,format='PNG')
    image.save(Path(__file__).parent/'synthetic-vision.png')
    messages=[{'role':'system','content':'这是合成图片识别测试。请按问题回答，不使用工具。'},
              {'role':'user','content':[{'type':'text','text':'读出图片第二行的完整测试代码，只返回该代码。'},
                 {'type':'image_url','image_url':{'url':'data:image/png;base64,'+base64.b64encode(buffer.getvalue()).decode()}}]}]
if '--compatible-context' in sys.argv:
    import model_protocol
    assert mode=='context'
    messages=[{'role':'user','content':model_protocol.dify_query(messages)}]
payload={'messages':messages,'task_id':'recognition-audit-'+uuid.uuid4().hex,'purpose':'chat',
         'customer_text':'合成上下文验收：请返回此前取件码。' if mode=='context' else '合成视觉验收：读出图中测试代码。'}
started=time.monotonic()
req=request.Request(gateway['url'],data=json.dumps(payload,ensure_ascii=False).encode(),
    headers={'Authorization':'Bearer '+token,'Content-Type':'application/json','X-Device-Id':str(settings.get('device_id') or 'synthetic-audit')},method='POST')
result={'root':str(root),'mode':mode,'synthetic_only':True,'task_id':payload['task_id'],'expected':nonce,'compatible_context':('--compatible-context' in sys.argv)}
try:
    with request.urlopen(req,timeout=65) as response:
        data=json.load(response)
        result.update(http_status=response.status,reply_matches_expected=nonce in str(data.get('reply') or ''),
            reply_excerpt=str(data.get('reply') or '')[:1200],chosen=data.get('chosen'),knowledge=data.get('knowledge'),judge_risk=(data.get('judge') or {}).get('risk'),
            candidates=[{'provider':item.get('provider'),'reply_excerpt':str(item.get('text') or '')[:1200],'reply_matches_expected':nonce in str(item.get('text') or ''),
                         'has_error':bool(item.get('error'))} for item in data.get('candidates',[])])
except error.HTTPError as exc:
    result.update(http_status=exc.code,error_type=type(exc).__name__)
except Exception as exc:
    result.update(error_type=type(exc).__name__)
result['elapsed_seconds']=round(time.monotonic()-started,2)
out=Path(sys.argv[3]);out.write_text(json.dumps(result,ensure_ascii=False,indent=2),encoding='utf-8')
print(json.dumps(result,ensure_ascii=False))