/**
 * 当调用系统安装器 {@link com.anythink.china.api.ATApkManager#startInstall(com.anythink.china.api.ATApk)}后，
 * 界面会跳转到安装器的界面上，这个时候我们没有提供 apk 文件是否安装完成或者失败的回调。
 *
 * 所以，开发者可以利用 activity 或者 fragment 的生命周期回调，结合自己的业务逻辑，去做出正确的展示。
 *
 * 比如，在 activity 中，从当前 app 跳转到系统安装器界面，会回调 onPause() -> onStop()；
 * 从系统安装器界面返回到 app 中的时候，会回调 onRestart() -> onStart() -> onResume()。
 *
 * 当界面从系统安装器返回后，可以通过判断 apk 是否已经安装 {@link #isAPKInstalled(android.content.Context, java.lang.String)} 来更新视图
 */
public class DownloadApkManagerActivity extends Activity implements View.OnClickListener {
    private static final String TAG = DownloadApkManagerActivity.class.getSimpleName();

    private ATApkManager mApkManager;
    private ATApk mApk;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_download_apk_manager);

        mApkManager = ATChinaSDKHandler.getATApkManager(this);
        initListener();
    }

    @Override
    protected void onStart() {
        super.onStart();
        Log.d(TAG, "onStart");
    }

    @Override
    protected void onResume() {
        super.onResume();
        Log.d(TAG, "onResume");
        if (mApk != null && isAPKInstalled(this, mApk.getPackageName())) {
            // 更新你的视图
            Log.i(TAG, "apk 文件已经安装，可以更新你的视图");
        }
    }

    @Override
    protected void onPause() {
        super.onPause();
        Log.d(TAG, "onPause");
    }

    @Override
    protected void onStop() {
        super.onStop();
        Log.d(TAG, "onStop");
    }

    @Override
    protected void onRestart() {
        super.onRestart();
        Log.d(TAG, "onRestart");
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        Log.d(TAG, "onDestroy");
    }

    @Override
    public void onBackPressed() {
        showOpenOrInstallAppDialog(true);
    }

    private void initListener() {
        findViewById(R.id.bt_show_apk_dialog).setOnClickListener(this);
        findViewById(R.id.bt_load_apk).setOnClickListener(this);
        findViewById(R.id.bt_install_apk).setOnClickListener(this);

        if (mApkManager != null) {
            mApkManager.setApkListener(new ATApkListener() {
                @Override
                public void onApkLoad(ATApk apk) {
                    if (apk != null) {
                        DownloadApkManagerActivity.this.mApk = apk;
                        Log.d(TAG, "onApkLoad() >>> title: " + apk.getTitle() + " desc: " + apk.getDesc() + " appName: " + apk.getAppName() +
                                " packageName: " + apk.getPackageName() + " logoUrl: " + apk.getLogoUrl());
                    } else {
                        Log.d(TAG, "apk is null.");
                    }
                }

                @Override
                public void onError(String code, String msg, String networkFirmId) {
                    Log.e(TAG, "onError() >>> code: " + code + " msg: " + msg + " networkFirmId: " + networkFirmId);
                }
            });
        }
    }

    @Override
    public void onClick(View v) {
        if (mApkManager == null) {
            return;
        }
        int viewId = v.getId();
        if (viewId == R.id.bt_show_apk_dialog) {
            //点击按钮进行激活弹窗提示
            showOpenOrInstallAppDialog(false);
        } else if (viewId == R.id.bt_load_apk) {
            mApkManager.loadApk();
        } else {
            if (mApk != null) {
                mApkManager.startInstall(mApk);
            } else {
                Log.e(TAG, "apk is null, can not start install.");
            }
        }
    }

    private void showOpenOrInstallAppDialog(boolean isFromBackPress) {
        if (mApkManager != null) {
            mApkManager.showOpenOrInstallAppDialog(new ATApkDialogClickListener() {
                @Override
                public void onShowResult(int resultType) {
                    Log.d(TAG, "onShowResult() >>> resultType: " + resultType);
                    if (resultType == ATApkDialogClickListener.NO_DLG) {
                        if (isFromBackPress) {
                            finish();
                        } else {
                            Toast.makeText(DownloadApkManagerActivity.this, "没有可以安装或激活的应用", Toast.LENGTH_SHORT).show();
                        }
                    }
                }

                @Override
                public void onButtonClick(int clickType) {
                    Log.d(TAG, "onButtonClick() >>> clickType: " + clickType);
                    if (isFromBackPress) {
                        finish();
                    };
                }
            });
        }
    }

    /**
     * 该方法用于判断某个 apk 是否已经安装
     * @param context
     * @param pkgName
     * @return
     */
    private boolean isAPKInstalled(Context context, String pkgName) {
        if (TextUtils.isEmpty(pkgName)) {
            return false;
        }
        PackageManager pm = context.getPackageManager();
        try {
            PackageInfo packageInfo = pm.getPackageInfo(pkgName, PackageManager.GET_GIDS);
            return packageInfo != null;
        } catch (Throwable e) {
            return false;
        }
    }
}