using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class MoveChildrenUI : MonoBehaviour
{
    public Transform source;
    public Transform target;

    // Start is called before the first frame update
    void Start()
    {
        if(source == null || target == null)
        {
            Debug.LogError("MoveChildrenUI: Source and Target must not be null");
        }
    }

    public void MoveToSource(bool sourceIsActive, bool targetIsActive)
    {
        Move(target, source);
        target.gameObject.SetActive(targetIsActive);
        source.gameObject.SetActive(sourceIsActive);
    }

    public void MoveToTarget(bool sourceIsActive, bool targetIsActive)
    {
        Move(source, target);
        source.gameObject.SetActive(sourceIsActive);
        target.gameObject.SetActive(targetIsActive);
    }

    public void ToggleMove(bool sourceIsActive, bool targetIsActive)
    {
        if (source.childCount == 0)
            MoveToSource(sourceIsActive, targetIsActive);
        else
            MoveToTarget(sourceIsActive, targetIsActive);
    }

    private void Move(Transform s, Transform t)
    {
        if (s.gameObject.activeInHierarchy)
        {
            Transform[] children = new Transform[s.childCount];
            int i = 0;
            foreach(Transform child in s)
            {
                children[i] = child;
                i++;
            }
            foreach (Transform child in children)
            {
                if(child.gameObject.activeSelf)
                    child.SetParent(t, false);
            }
        }
    }

    // Update is called once per frame
    void Update()
    {

    }

    void FixedUpdate()
    {

    }
}