#!/usr/bin/env python3
"""안드로이드 설정 한 번에 맞추기.

사용: flutter create --platforms=android --org com.friendlymap --project-name friendly_map .
      python3 tool/android_patch.py
권한(인터넷, 카메라, 같은 네트워크 발견), 평문 통신(같은 네트워크 직접 연결), minSdk 23 이상을 맞춘다.
여러 번 실행해도 같은 결과가 나온다.
"""
import pathlib, re, sys

root = pathlib.Path(__file__).resolve().parent.parent / "android" / "app"
manifest = root / "src" / "main" / "AndroidManifest.xml"
MIN_SDK = 23
PERMS = [
    "android.permission.INTERNET",
    "android.permission.ACCESS_NETWORK_STATE",
    "android.permission.ACCESS_WIFI_STATE",
    "android.permission.CHANGE_WIFI_MULTICAST_STATE",
    "android.permission.CAMERA",
    "android.permission.ACCESS_FINE_LOCATION",
    "android.permission.ACCESS_COARSE_LOCATION",
    "android.permission.READ_CALL_LOG",
    "android.permission.POST_NOTIFICATIONS",
    "android.permission.RECEIVE_BOOT_COMPLETED",
    "android.permission.VIBRATE",
]
RECEIVERS = """        <receiver android:exported="false" android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationReceiver"/>
        <receiver android:exported="false" android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED"/>
            </intent-filter>
        </receiver>
"""


def patch_manifest(text: str) -> str:
    add = "".join(f'    <uses-permission android:name="{p}"/>\n' for p in PERMS if p not in text)
    if add:
        text = re.sub(r"(<manifest[^>]*>\s*\n)", lambda m: m.group(1) + add, text, count=1)
    if "usesCleartextTraffic" not in text:
        text = text.replace("<application", '<application\n        android:usesCleartextTraffic="true"', 1)
    if "ScheduledNotificationReceiver" not in text:
        text = text.replace("</application>", RECEIVERS + "    </application>", 1)
    return text


def patch_gradle(text: str) -> str:
    # minSdk 는 23 이상이면 된다. flutter.minSdkVersion(현재 Flutter 는 24)은 그대로 둔다.
    # Flutter 는 빌드할 때 자기 최소값보다 낮은 숫자를 flutter.minSdkVersion 으로 되돌리므로 낮추지 않는다.
    text = re.sub(r"(minSdk\s*=\s*|minSdkVersion\s+)(\d+)",
                  lambda m: m.group(1) + str(max(int(m.group(2)), MIN_SDK)), text)
    # 예약 알림 플러그인이 요구하는 자바 새 기능 지원(desugaring)
    if "isCoreLibraryDesugaringEnabled" not in text and "coreLibraryDesugaringEnabled" not in text:
        if "compileOptions {" in text:
            flag = "isCoreLibraryDesugaringEnabled = true" if "kotlin" in text or "=" in text.split("compileOptions {")[1][:80] else "coreLibraryDesugaringEnabled true"
            text = text.replace("compileOptions {", "compileOptions {\n        " + flag, 1)
        if "coreLibraryDesugaring(" not in text and "coreLibraryDesugaring '" not in text:
            kts = "isCoreLibraryDesugaringEnabled" in text
            dep = 'coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:2.1.4")' if kts else "coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.1.4'"
            text += "\ndependencies {\n    " + dep + "\n}\n"
    return text


def main() -> int:
    if not manifest.exists():
        print("android/ 가 비어 있어요. 먼저 flutter create --platforms=android ... . 를 실행해 주세요.")
        return 1
    manifest.write_text(patch_manifest(manifest.read_text(encoding="utf-8")), encoding="utf-8")
    for name in ("build.gradle.kts", "build.gradle"):
        g = root / name
        if g.exists():
            g.write_text(patch_gradle(g.read_text(encoding="utf-8")), encoding="utf-8")
    print("안드로이드 설정을 맞췄어요.")
    return 0


if __name__ == "__main__":
    sys.exit(main())