# Vendor callback: GET or POST
# Volcengine example (GET):
#   ?bytedToken=xxx&resultCode=10000&algorithmBaseRespCode=0
#   &reqMeasureInfoValue=1&verify_type=real_time
# Return format depends on vendor requirements.

debug("[rl_callback] ===== START =====")
debug(f"[rl_callback] params_kw: {params_kw}")
print(f"[rl_callback] params_kw: {params_kw}")

body_str = http_request.get("body", "") or ""
byted_token = ""
result_code = ""

# 1. Try POST body (JSON)
try:
    body = json.loads(body_str) if body_str else {}
    byted_token = (body.get("BytedToken") or body.get("bytedToken")
                   or body.get("byted_token") or body.get("Token") or "")
    result_code = body.get("resultCode") or body.get("ResultCode") or ""
except Exception as e:
    debug(f"[rl_callback] body parse error: {e}")

# 2. Fallback: query string params (GET callback)
if not byted_token:
    byted_token = (params_kw.get("bytedToken")
                   or params_kw.get("BytedToken")
                   or params_kw.get("byted_token")
                   or "")
if not result_code:
    result_code = params_kw.get("resultCode", "")

debug(f"[rl_callback] byted_token={byted_token}, resultCode={result_code}")
print(f"[rl_callback] byted_token={byted_token}, resultCode={result_code}")

if not byted_token:
    debug("[rl_callback] ERROR: missing bytedToken")
    return json.dumps({"code": "400", "message": "Missing bytedToken"})

# Process callback
try:
    debug(f"[rl_callback] calling rl_handle_callback")
    result = await rl_handle_callback(byted_token, project_name="default")
    debug(f"[rl_callback] result: {result}")
    print(f"[rl_callback] result: {result}")
except Exception as e:
    debug(f"[rl_callback] exception: {e}")
    print(f"[rl_callback] exception: {e}")
    print(traceback.format_exc())
    return json.dumps({"code": "500", "message": f"Internal error: {str(e)}"})

if result.get("success"):
    return json.dumps({"code": "200", "message": "ok"})
else:
    return json.dumps({"code": "500", "message": result.get("message", "callback error")})