package com.gh.common.util;


import android.content.Context;
import android.content.pm.*;
import android.os.Handler;
import android.os.Message;
import com.gh.gamecenter.eventbus.EBPackage;
import de.greenrobot.event.EventBus;

import java.util.*;

/**
 * 下载完成跳安装，
 */
public class InstallUtils {

    private static final int MAX_TIME = 5 * 60 * 1000;

    private static Map<String, Long> installMap;
    private static Map<String, Long> uninstallMap;

    private static InstallUtils mInstance;
    private PackageManager packageManager;
    private Handler handler;
    private boolean isRunning;

    private InstallUtils(Context context) {
        isRunning = false;

        packageManager = context.getPackageManager();

        handler = new Handler(context.getMainLooper()) {
            @Override
            public void handleMessage(Message msg) {
                if (msg.what == 0x123 && packageManager != null) {
                    ArrayList<String> list = new ArrayList<>();
                    List<PackageInfo> packageInfos = packageManager.getInstalledPackages(0);
                    for (PackageInfo packageInfo : packageInfos) {
                        if ((packageInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 0) {
                            list.add(packageInfo.packageName);
                        }
                    }
                    if (installMap != null && installMap.size() != 0) {
                        ArrayList<String> keys = new ArrayList<>();
                        for (String packageName : installMap.keySet()) {
                            long time = installMap.get(packageName);
                            if (System.currentTimeMillis() - time >= MAX_TIME) {
                                keys.add(packageName);
                            } else if (list.contains(packageName)) {
                                keys.add(packageName);
                                EventBus.getDefault().post(new EBPackage("安装", packageName));
                            }
                        }
                        for (String key : keys) {
                            installMap.remove(key);
                        }
                    }
                    if (uninstallMap != null && uninstallMap.size() != 0) {
                        ArrayList<String> keys = new ArrayList<>();
                        for (String packageName : uninstallMap.keySet()) {
                            long time = uninstallMap.get(packageName);
                            if (System.currentTimeMillis() - time >= MAX_TIME) {
                                keys.add(packageName);
                            } else if (list.contains(packageName)) {
                                keys.add(packageName);
                                EventBus.getDefault().post(new EBPackage("卸载", packageName));
                            }
                        }
                        for (String key : keys) {
                            uninstallMap.remove(key);
                        }
                    }
                    if ((installMap != null && installMap.size() != 0)
                            || (uninstallMap != null && uninstallMap.size() != 0)) {
                        sendEmptyMessageDelayed(0x123, 3000);
                    } else {
                        isRunning = false;
                    }
                }
            }
        };
    }

    public static InstallUtils getInstance(Context context) {
        if (mInstance == null) {
            synchronized (InstallUtils.class) {
                if (mInstance == null) {
                    mInstance = new InstallUtils(context);
                }
            }
        }
        return mInstance;
    }

    public void addInstall(String packageName) {
        if (installMap == null) {
            installMap = Collections.synchronizedMap(new HashMap<String, Long>());
        }
        installMap.put(packageName, System.currentTimeMillis());
        run();
    }

    public void removeInstall(String packageName) {
        if (installMap != null) {
            installMap.remove(packageName);
        }
    }

    public void addUninstall(String packageName) {
        if (uninstallMap == null) {
            uninstallMap = Collections.synchronizedMap(new HashMap<String, Long>());
        }
        uninstallMap.put(packageName, System.currentTimeMillis());
        run();
    }

    public void removeUninstall(String packageName) {
        if (uninstallMap != null) {
            uninstallMap.remove(packageName);
        }
    }

    public void run() {
        if ((installMap == null || installMap.isEmpty()) && (uninstallMap == null || uninstallMap.isEmpty())) {
            return;
        }
        if (isRunning) {
            return;
        }
        isRunning = true;
        handler.sendEmptyMessageDelayed(0x123, 10000);
    }

}