# -*- coding: utf-8 -*-
"""Activity 骨架必须完整（防"白屏"这类事故）。

为什么要单独一个测试：
    我删诊断代码时，脚本是"方法体里出现标记就删掉整个方法"。
    onCreate 里调了 buildDiagPanel()，于是**整个 onCreate 被删了**。

    它照样编译通过（Activity.onCreate 不是抽象方法），
    回归也全绿，但 App 打开就是**白屏**。

    这类"能编译但跑不起来"的问题，源码级断言能挡住。
"""
from __future__ import annotations

import re
import sys
import zipfile
from pathlib import Path

ROOT = Path(__file__).resolve().parent.parent
WATCH = ROOT / "android" / "src" / "com" / "lanremote" / "watch"
MAIN = WATCH / "MainActivity.java"

passed = 0
failed = 0


def check(name, ok, detail=""):
    global passed, failed
    if ok:
        passed += 1
        print("  [PASS] " + name)
    else:
        failed += 1
        print("  [FAIL] " + name + "  " + str(detail))


def body_of(src: str, signature: str) -> str:
    """取出某个方法的完整方法体（花括号配平）。"""
    index = src.find(signature)
    if index < 0:
        return ""
    start = src.find("{", index)
    if start < 0:
        return ""
    depth = 0
    for pos in range(start, len(src)):
        if src[pos] == "{":
            depth += 1
        elif src[pos] == "}":
            depth -= 1
            if depth == 0:
                return src[start:pos + 1]
    return ""


def main() -> int:
    src = MAIN.read_text(encoding="utf-8")

    print("一、Activity 生命周期骨架")
    check("有 onCreate", "protected void onCreate(Bundle" in src)
    check("有 onDestroy", "protected void onDestroy()" in src)

    create = body_of(src, "protected void onCreate(Bundle")
    check("onCreate 有方法体", bool(create), len(create))
    if create:
        check("调了 super.onCreate", "super.onCreate(" in create)
        check("**调了 setContentView**（不调就是白屏）",
              "setContentView(" in create, "白屏的直接原因")
        check("建了 root 容器", "root = new FrameLayout" in create)
        check("建了连接页", "buildConnectPanel()" in create)
        check("建了控制页", "buildControlPanel()" in create)
        check("建了镜像页", "buildMirrorPanel()" in create)
        check("初始化了 store", "new DeviceStore(" in create)
        check("初始化了 ui 线程 Handler", "new Handler(" in create)
        check("初始化了 client", "new RemoteClient(" in create)
        check("装了崩溃兜底", "installCrashGuard()" in create)
        check("装了崩溃兜底在 ui 之后（否则 NPE）",
              create.find("new Handler(") < create.find("installCrashGuard()"),
              "顺序")

    print()
    print("二、三个面板都有创建方法")
    for name in ("private void buildConnectPanel()",
                 "private void buildControlPanel()",
                 "private void buildMirrorPanel()"):
        check(f"{name[13:-3]} 存在", name in src)

    print()
    print("三、关键字段都有赋值（不只是声明）")
    for field, pattern in (
            ("store", r"\bstore\s*=\s*new DeviceStore"),
            ("ui", r"\bui\s*=\s*new Handler"),
            ("client", r"\bclient\s*=\s*new RemoteClient"),
            ("root", r"\broot\s*=\s*new FrameLayout")):
        check(f"{field} 被赋值", bool(re.search(pattern, src)))

    print()
    print("四、打包后的 APK 里 Activity 类在")
    apks = sorted((ROOT / "dist").glob("*watch*.apk"),
                  key=lambda p: p.stat().st_mtime, reverse=True)
    if apks:
        with zipfile.ZipFile(apks[0]) as archive:
            names = archive.namelist()
            check("classes.dex 在", "classes.dex" in names)
            check("AndroidManifest.xml 在", "AndroidManifest.xml" in names)
            check("dex 不是空的",
                  archive.getinfo("classes.dex").file_size > 100000,
                  archive.getinfo("classes.dex").file_size)
    else:
        check("找到 APK", False, "dist 里没有 watch apk")

    print()
    print("=" * 62)
    print(f"通过 {passed} 项，失败 {failed} 项")
    return 0 if failed == 0 else 1


if __name__ == "__main__":
    raise SystemExit(main())