package com.mogo.utils;

import android.app.Activity;

import java.util.ArrayDeque;
import java.util.Deque;
import java.util.Iterator;

public class ActivityStack {
    private static final Deque< Activity > ACTIVITY_STACK = new ArrayDeque<>();

    public static synchronized void addActivity( Activity activity) {
        if(activity != null){
            ACTIVITY_STACK.offer(activity);
        }
    }

    public static synchronized Activity currentActivity() {
        return ACTIVITY_STACK.peekLast();
    }

    public static synchronized void finishCurrentActivity() {
        Activity activity = ACTIVITY_STACK.pop();
        if (!activity.isFinishing()) {
            activity.finish();
        }
    }

    public static synchronized void finishActivity( Activity activity) {
        ACTIVITY_STACK.remove(activity);
        if (!activity.isFinishing()) {
            activity.finish();
        }
    }

    public static synchronized void finishActivity( Class<? extends Activity > cls) {
        Iterator< Activity > iterator = ACTIVITY_STACK.iterator();
        while (iterator.hasNext()) {
            Activity next = iterator.next();
            if(next.getClass().equals(cls)){
                iterator.remove();
                if(!next.isFinishing()){
                    next.finish();
                }
            }
        }
    }

    public static synchronized void finishActivityExcept( Class<?> cls) {
        Iterator< Activity > iterator = ACTIVITY_STACK.iterator();
        while (iterator.hasNext()) {
            Activity next = iterator.next();
            if (!next.getClass().equals(cls)) {
                iterator.remove();
                if(!next.isFinishing()){
                    next.finish();
                }
            }
        }
    }

    public static synchronized void finishAllActivity() {
        Iterator< Activity > iterator = ACTIVITY_STACK.iterator();
        while (iterator.hasNext()) {
            iterator.remove();
            Activity next = iterator.next();
            if(!next.isFinishing()){
                next.finish();
            }
        }
    }

    public static synchronized boolean isActivityExist( Class<? extends Activity > cls){
        Iterator< Activity > iterator = ACTIVITY_STACK.iterator();
        while (iterator.hasNext()) {
            Activity next = iterator.next();
            if(next.getClass().equals(cls)){
                return true;
            }
        }
        return false;
    }

}