feat(client): capture T-105 quantity states
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QiuSW
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"""T-105 数量两态的纯只读取证；人工确认前不识别或操作数量控件。"""
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from __future__ import annotations
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from collections.abc import Callable
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from dataclasses import dataclass
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from datetime import UTC, datetime
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from hashlib import sha256
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import json
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from math import isfinite
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import os
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from pathlib import Path
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import shutil
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from typing import Any, Protocol
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from uuid import uuid4
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from adbutils.errors import AdbTimeout
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from PIL import Image, UnidentifiedImageError
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from uiautomator2.exceptions import HTTPTimeoutError
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from ..device.adb import AdbClient, DeviceConnectionError, DeviceInspection
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from ..device.baseline import (
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HIERARCHY_PARAMS,
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PDD_PACKAGE,
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SCREENSHOT_PARAMS,
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_save_base64_screenshot,
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_sha256_file,
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_validate_hierarchy,
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)
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from .product_open import EXPECTED_PDD_VERSION
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from .product_url import parse_product_url
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EXPECTED_GOODS_ID = "937122477375"
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EXPECTED_DEVICE_MODEL = "PKG110"
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EXPECTED_ANDROID_VERSION = "16"
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EXPECTED_SCREEN_SIZE = (1080, 2376)
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TARGET_SELECTION = {"color": "黑色CHA(纯棉)", "size": "M(建议100-115)"}
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DECLARED_QUANTITIES = {"initial": 1, "target": 2}
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class QuantityGate2EvidenceError(RuntimeError):
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"""T-105 两态证据未形成完整原子产物。"""
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class QuantityGate2EvidenceTimeoutError(QuantityGate2EvidenceError):
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"""只读取证设备调用超时。"""
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class QuantityGate2ReadDevice(Protocol):
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"""阶段一唯一设备边界；故意不暴露任何页面动作。"""
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def app_info(self, package_name: str) -> dict[str, Any]: ...
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def app_current(self) -> dict[str, Any]: ...
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def window_size(self) -> tuple[int, int]: ...
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def jsonrpc_call(self, method: str, params: Any = None, timeout: float = 10) -> Any: ...
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@dataclass(frozen=True)
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class QuantityGate2EvidenceResult:
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output_directory: Path
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manifest_path: Path
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screenshot_path: Path
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hierarchy_path: Path
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app_path: Path
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class QuantityGate2EvidenceCapturer:
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"""记录人工准备的数量状态，不从页面推断声明是否正确。"""
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def __init__(
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self,
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adb_client: AdbClient,
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connector: Callable[[str], QuantityGate2ReadDevice],
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timeout_seconds: float,
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) -> None:
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if not _is_positive_finite(timeout_seconds):
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raise ValueError("timeout_seconds 必须是大于 0 的有限数值")
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self._adb_client = adb_client
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self._connector = connector
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self._timeout_seconds = timeout_seconds
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self._started = False
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def capture(
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self,
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serial: str,
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goods_id: str,
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human_declared_state: str,
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human_declared_quantity: int,
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output_directory: Path,
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) -> QuantityGate2EvidenceResult:
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if self._started:
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raise QuantityGate2EvidenceError("同一取证器不可重复调用。")
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self._started = True
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_validate_inputs(serial, goods_id, human_declared_state, human_declared_quantity)
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target = Path(output_directory)
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_validate_new_target(target)
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staging: Path | None = None
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try:
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inspection = self._adb_client.inspect(serial)
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_require_expected_device(inspection)
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device = self._connector(serial)
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initial_app = _require_read_precondition(device)
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target.parent.mkdir(parents=True, exist_ok=True)
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staging = target.parent / f".{target.name}.staging-{uuid4().hex}"
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staging.mkdir()
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screenshot_path = staging / "screenshot.png"
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screenshot_payload = _read_rpc(
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device,
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"takeScreenshot",
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SCREENSHOT_PARAMS,
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self._timeout_seconds,
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)
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if not isinstance(screenshot_payload, str):
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raise QuantityGate2EvidenceError("数量状态截图无效，未发布证据。")
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_save_base64_screenshot(screenshot_payload, screenshot_path)
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_require_screenshot_size(screenshot_path)
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hierarchy = _read_rpc(
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device,
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"dumpWindowHierarchy",
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HIERARCHY_PARAMS,
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self._timeout_seconds,
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)
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_validate_hierarchy(hierarchy)
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hierarchy_path = staging / "hierarchy.xml"
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hierarchy_path.write_text(hierarchy, encoding="utf-8")
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final_app = _require_read_precondition(device)
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if final_app != initial_app:
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raise QuantityGate2EvidenceError("数量状态取证期间前台页面漂移，未发布证据。")
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app_path = staging / "app.json"
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app_path.write_text(
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json.dumps(final_app, ensure_ascii=False, indent=2, sort_keys=True) + "\n",
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encoding="utf-8",
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)
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manifest_path = staging / "manifest.json"
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manifest_path.write_text(
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json.dumps(
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_manifest(
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inspection,
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serial,
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goods_id,
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human_declared_state,
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human_declared_quantity,
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screenshot_path,
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hierarchy_path,
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app_path,
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),
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ensure_ascii=False,
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indent=2,
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sort_keys=True,
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)
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+ "\n",
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encoding="utf-8",
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)
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os.rename(staging, target)
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staging = None
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except (DeviceConnectionError, QuantityGate2EvidenceError):
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_clean_staging(staging)
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raise
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except (AdbTimeout, HTTPTimeoutError, TimeoutError) as error:
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_clean_staging(staging)
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raise QuantityGate2EvidenceTimeoutError("数量两态只读取证超时，未发布证据。") from error
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except (OSError, UnidentifiedImageError, ValueError) as error:
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_clean_staging(staging)
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raise QuantityGate2EvidenceError("数量两态证据无法原子发布，未发布证据。") from error
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except Exception as error:
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_clean_staging(staging)
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raise QuantityGate2EvidenceError("数量两态只读取证未完成，未发布证据。") from error
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return QuantityGate2EvidenceResult(
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output_directory=target,
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manifest_path=target / "manifest.json",
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screenshot_path=target / "screenshot.png",
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hierarchy_path=target / "hierarchy.xml",
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app_path=target / "app.json",
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)
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def _is_positive_finite(value: object) -> bool:
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return (
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isinstance(value, (int, float))
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and not isinstance(value, bool)
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and value > 0
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and isfinite(value)
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)
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def _validate_inputs(serial: object, goods_id: object, state: object, quantity: object) -> None:
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if type(serial) is not str or not serial.strip() or serial != serial.strip():
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raise QuantityGate2EvidenceError("必须显式提供非空设备通道。")
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if type(goods_id) is not str or goods_id != EXPECTED_GOODS_ID:
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raise QuantityGate2EvidenceError("商品不是 T-105 已批准取证目标。")
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parse_product_url(f"https://mobile.yangkeduo.com/goods.html?goods_id={goods_id}")
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if type(state) is not str or state not in DECLARED_QUANTITIES:
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raise QuantityGate2EvidenceError("人工声明状态无效。")
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if type(quantity) is not int or quantity != DECLARED_QUANTITIES[state]:
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raise QuantityGate2EvidenceError("人工声明数量与批准状态不一致。")
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def _validate_new_target(target: Path) -> None:
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if target.exists() or not target.name:
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raise QuantityGate2EvidenceError("输出目录必须是不存在的明确新目录。")
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def _require_expected_device(inspection: DeviceInspection) -> None:
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if inspection.model != EXPECTED_DEVICE_MODEL or inspection.android_version != EXPECTED_ANDROID_VERSION:
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raise QuantityGate2EvidenceError("设备不是已批准取证组合。")
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def _require_read_precondition(device: QuantityGate2ReadDevice) -> dict[str, str]:
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info = device.app_info(PDD_PACKAGE)
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version = (info.get("versionName") or info.get("version_name")) if isinstance(info, dict) else None
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if version != EXPECTED_PDD_VERSION:
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raise QuantityGate2EvidenceError("拼多多版本不是已批准取证版本。")
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current = device.app_current()
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if not isinstance(current, dict) or current.get("package") != PDD_PACKAGE:
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raise QuantityGate2EvidenceError("拼多多不在前台。")
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activity = current.get("activity")
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if not isinstance(activity, str) or not activity.strip():
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raise QuantityGate2EvidenceError("前台应用摘要不完整。")
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if device.window_size() != EXPECTED_SCREEN_SIZE:
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raise QuantityGate2EvidenceError("屏幕坐标空间不是已批准尺寸。")
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return {"package": PDD_PACKAGE, "activity": activity, "pdd_version": EXPECTED_PDD_VERSION}
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def _read_rpc(
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device: QuantityGate2ReadDevice,
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method: str,
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params: object,
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timeout_seconds: float,
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) -> object:
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return device.jsonrpc_call(method, params, timeout=timeout_seconds)
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def _require_screenshot_size(path: Path) -> None:
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with Image.open(path) as image:
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image.load()
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if image.size != EXPECTED_SCREEN_SIZE or image.format != "PNG":
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raise QuantityGate2EvidenceError("数量状态截图格式或尺寸无效。")
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def _clean_staging(staging: Path | None) -> None:
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if staging is not None and staging.exists():
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shutil.rmtree(staging)
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def _manifest(
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inspection: DeviceInspection,
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serial: str,
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goods_id: str,
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state: str,
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quantity: int,
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screenshot_path: Path,
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hierarchy_path: Path,
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app_path: Path,
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) -> dict[str, Any]:
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return {
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"schema_version": 1,
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"operation": "t105-quantity-gate2-readonly-evidence",
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"captured_at": datetime.now(UTC).isoformat(),
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"product": {
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"goods_id": goods_id,
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"canonical_url": f"https://mobile.yangkeduo.com/goods.html?goods_id={goods_id}",
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},
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"human_declared_state": state,
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"human_declared_quantity": quantity,
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"human_declared_selection": TARGET_SELECTION,
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"review_status": "human_review_required",
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"channel": "wifi" if ":" in serial else "usb",
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"serial_sha256": sha256(serial.encode("utf-8")).hexdigest(),
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"device": {
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"model": inspection.model,
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"android_version": inspection.android_version,
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"pdd_package": PDD_PACKAGE,
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"pdd_version": EXPECTED_PDD_VERSION,
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},
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"artifacts": [
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{
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"path": screenshot_path.name,
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"role": "quantity_state_raw_screenshot",
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"sha256": _sha256_file(screenshot_path),
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},
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{
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"path": hierarchy_path.name,
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"role": "quantity_state_raw_hierarchy_local_only",
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"sha256": _sha256_file(hierarchy_path),
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},
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{
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"path": app_path.name,
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"role": "quantity_state_app_identity",
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"sha256": _sha256_file(app_path),
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},
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],
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}
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