年齢レーティングの質問票に、記憶ではなくリポジトリの宣言で答える

#!/usr/bin/env python3
"""宣言した年齢レーティング回答と、実装が示す事実を突き合わせる。
標準ライブラリのみ。exit 1 = 宣言と実装が食い違っている。"""
import json, plistlib, re, sys
from pathlib import Path
 
SOURCE_SUFFIXES = {".swift", ".m", ".mm", ".h", ".kt", ".java"}
 
# 自分のソースに現れたら「その機能が有る」と見なす印
SOURCE_SIGNS = {
    "in_app_browser": [r"\bSFSafariViewController\b", r"\bWKWebView\b",
                       r"\bASWebAuthenticationSession\b", r"\bUIWebView\b"],
    "advertising":    [r"\bGoogleMobileAds\b", r"\bBannerView\b", r"\bAppLovin", r"\bGADMobileAds\b"],
    "user_generated_content": [r"\bUITextView\b", r"\bTextEditor\b", r"uploadComment", r"submitPost"],
    "in_app_purchase": [r"\bStoreKit\b", r"\bTransaction\.currentEntitlements\b", r"\bSKPayment"],
    "location_sharing": [r"\bCLLocationManager\b", r"\brequestWhenInUseAuthorization\b"],
    "tracking":       [r"\bATTrackingManager\b", r"\brequestTrackingAuthorization\b"],
}
 
# Info.plist にこの鍵があれば、その機能に到達する道がある
PLIST_SIGNS = {
    "location_sharing": ["NSLocationWhenInUseUsageDescription",
                         "NSLocationAlwaysAndWhenInUseUsageDescription"],
    "tracking":         ["NSUserTrackingUsageDescription"],
}
 
# 依存 SDK が内側に持ち込むもの（自分のソースには一行も現れない）
DEPENDENCY_IMPLIES = {
    r"Google-Mobile-Ads-SDK|GoogleMobileAds": [
        ("advertising", "広告 SDK が同梱されています"),
        ("in_app_browser", "広告のランディング先をアプリ内ブラウザで開きます"),
    ],
    r"AppLovin|InMobi|UnityAds": [
        ("advertising", "広告メディエーション SDK が同梱されています"),
        ("in_app_browser", "広告のランディング先をアプリ内ブラウザで開きます"),
    ],
}
 
# 「無い」と宣言してよいのは、証拠が一つも出なかったときだけ
DECLARED_ABSENT = {
    "in_app_browser": lambda v: v == "none",
    "advertising": lambda v: v == "none",
    "user_generated_content": lambda v: v == "none",
    "in_app_purchase": lambda v: v is False,
    "location_sharing": lambda v: v is False,
    "tracking": lambda v: v is False,
}
 
 
def collect_evidence(root: Path) -> dict[str, list[str]]:
    found: dict[str, list[str]] = {}
    for path in sorted(root.rglob("*")):
        if not path.is_file():
            continue
        if path.suffix in SOURCE_SUFFIXES:
            text = path.read_text(encoding="utf-8", errors="ignore")
            for line_no, line in enumerate(text.splitlines(), 1):
                for key, patterns in SOURCE_SIGNS.items():
                    for pattern in patterns:
                        if re.search(pattern, line):
                            found.setdefault(key, []).append(
                                f"{path.relative_to(root)}:{line_no} {line.strip()[:60]}")
        elif path.name == "Info.plist":
            try:
                plist = plistlib.loads(path.read_bytes())
            except Exception:
                continue
            for key, plist_keys in PLIST_SIGNS.items():
                for plist_key in plist_keys:
                    if plist_key in plist:
                        found.setdefault(key, []).append(
                            f"{path.relative_to(root)} {plist_key}")
        elif path.name in {"Podfile.lock", "Package.resolved"}:
            text = path.read_text(encoding="utf-8", errors="ignore")
            for pattern, implications in DEPENDENCY_IMPLIES.items():
                if re.search(pattern, text):
                    for key, why in implications:
                        found.setdefault(key, []).append(
                            f"{path.relative_to(root)} 依存越し: {why}")
    return found
 
 
def main() -> int:
    manifest_path, app_root = Path(sys.argv[1]), Path(sys.argv[2])
    answers = json.loads(manifest_path.read_text(encoding="utf-8"))["answers"]
    evidence = collect_evidence(app_root)
 
    conflicts = 0
    print(f"{'項目':<24}{'宣言':<14}{'証拠':>4}  判定")
    print("-" * 72)
    for key, declared in answers.items():
        hits = evidence.get(key, [])
        says_absent = DECLARED_ABSENT[key](declared)
        if says_absent and hits:
            verdict, conflicts = "✗ 実装は有ると言っています", conflicts + 1
        elif not says_absent and not hits:
            verdict = "△ 証拠が見つかりません"
        else:
            verdict = "✓"
        print(f"{key:<24}{str(declared):<14}{len(hits):>4}  {verdict}")
        if says_absent and hits:
            for hit in hits:
                print(f"{'':<24}└ {hit}")
 
    print("-" * 72)
    print(f"食い違い: {conflicts} 件")
    return 1 if conflicts else 0
 
 
if __name__ == "__main__":
    raise SystemExit(main())

$ python3 check_rating_answers.py rating-answers.json WallpaperApp
項目                      宣言              証拠  判定
------------------------------------------------------------------------
in_app_browser          none             2  ✗ 実装は有ると言っています
                        └ Podfile.lock 依存越し: 広告のランディング先をアプリ内ブラウザで開きます
                        └ Settings/SupportLinkView.swift:7 vc.present(SFSafariViewController(url: url), a
advertising             contextual       3  ✓
user_generated_content  none             0  ✓
in_app_purchase         True             2  ✓
location_sharing        False            0  ✓
tracking                False            1  ✗ 実装は有ると言っています
                        └ Info.plist NSUserTrackingUsageDescription
------------------------------------------------------------------------
食い違い: 2 件
$ echo $?
1

$ python3 check_rating_answers.py rating-answers.json WallpaperApp
項目                      宣言              証拠  判定
------------------------------------------------------------------------
in_app_browser          restricted       2  ✓
advertising             contextual       3  ✓
user_generated_content  none             0  ✓
in_app_purchase         True             2  ✓
location_sharing        False            0  ✓
tracking                True             1  ✓
------------------------------------------------------------------------
食い違い: 0 件
$ echo $?
0

# .github/workflows/rating-answers.yml
name: rating-answers
on:
  pull_request:
    paths:
      - "**/Info.plist"
      - "**/Podfile.lock"
      - "**/Package.resolved"
      - "rating-answers.json"
      - "**/*.swift"
jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: python3 check_rating_answers.py rating-answers.json WallpaperApp