package com.yunduan.parking.manager;

import android.app.Activity;
import android.app.ActivityManager;
import android.content.Context;

import com.yunduan.parking.service.SerialService;

import java.util.Stack;

/**
 * author cowards
 * created on 2018\10\17 0017
 **/
public class ActManager {
    private static Stack<Activity> activityStack;
    private static ActManager instance;

    private ActManager() {
    }

    /**
     * 單一例項
     */
    public static ActManager getAppManager() {
        if (instance == null) {
            instance = new ActManager();
        }
        return instance;
    }

    /**
     * 新增Activity到堆疊
     */
    public void addActivity(Activity activity) {
        if (activityStack == null) {
            activityStack = new Stack<Activity>();
        }
        activityStack.add(activity);
    }

    /**
     * 獲取當前Activity（堆疊中最後一個壓入的）
     */
    public Activity currentActivity() {
        Activity activity = activityStack.lastElement();
        return activity;
    }

    /**
     * 結束當前Activity（堆疊中最後一個壓入的）
     */
    public void finishActivity() {
        Activity activity = activityStack.lastElement();
        if (activity != null) {
            activity.finish();
            activity = null;
        }
    }

    /**
     * 結束指定的Activity
     */
    public void finishActivity(Activity activity) {
        if (activity != null) {
            activityStack.remove(activity);
            activity.finish();
            activity = null;
        }
    }

    /**
     * 結束指定類名的Activity
     */
    public void finishActivity(Class<?> cls) {
        for (Activity activity : activityStack) {
            if (activity.getClass().equals(cls)) {
                finishActivity(activity);
            }
        }
    }

    /**
     * 結束所有Activity
     */
    public void finishAllActivity() {
        for (int i = 0, size = activityStack.size(); i < size; i++) {
            if (null != activityStack.get(i)) {
                activityStack.get(i).finish();
            }
        }
        activityStack.clear();
    }

    /**
     * 退出應用程式
     */
    public void AppExit(Context context) {
        try {
            finishAllActivity();
            ActivityManager activityMgr = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
            activityMgr.restartPackage(context.getPackageName());
            System.exit(0);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}