package com.wpc.library.util.common;

import android.Manifest;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.provider.Settings;
import android.telephony.TelephonyManager;

import java.util.ArrayList;
import java.util.List;

import androidx.core.app.ActivityCompat;

import static android.content.Context.TELEPHONY_SERVICE;

public class DeviceUtil {

    private static List<PackageInfo> installedPackages;
    private static String imei;
    private static String android_id;
    private static String imsi;

    public static synchronized List<PackageInfo> getInstalledPackagesCache(Context context) {
        if (installedPackages != null) {
            return installedPackages;
        }
        PackageManager pManager = context.getPackageManager();
        //获取手机内所有应用
        installedPackages = pManager.getInstalledPackages(0);
        return installedPackages;
    }


    public static synchronized List<String> getInstalledPackageNamesCache(Context context) {
        List<PackageInfo> list = getInstalledPackagesCache(context);
        List<String> nameList = new ArrayList<>();
        for (PackageInfo pi : list) {
            nameList.add(pi.packageName);
        }
        return nameList;
    }

    public static synchronized String getImeiCache(Context context) {
        if (imei != null) {
            return imei;
        }

        TelephonyManager manager = (TelephonyManager) context.getSystemService(TELEPHONY_SERVICE);
        try {
            if (ActivityCompat.checkSelfPermission(context, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
                return "";
            }
            imei = manager.getDeviceId();
        } catch (Exception e) {

        }
        imei = imei == null ? "" : imei;
        return imei;
    }

    public static synchronized String getAndroidIdCache(Context context) {
        if (android_id != null) {
            return android_id;
        }
        try {
            android_id = Settings.System.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID);
        } catch (Exception e) {

        }
        android_id = android_id == null ? "" : android_id;
        return android_id;
    }


    public static synchronized String getImsiCache(Context context) {
        if (imsi != null) {
            return imsi;
        }
        TelephonyManager mTelephonyMgr = (TelephonyManager) context
                .getSystemService(Context.TELEPHONY_SERVICE);
        try {
            if (ActivityCompat.checkSelfPermission(context, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
                return "";
            }
            imsi = mTelephonyMgr.getSubscriberId();
        }catch(Exception e){

        }
        imsi = imsi == null ? "" : imsi;
        return imsi;
    }

}