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

namespace SimpleInventorySystem
{
    public class AppendUI : MonoBehaviour
    {
        public Transform AttachToTransform;
        public bool FindAttachToScriptInAttachToTransform;
        private Transform targetParentTransform;
        [Tooltip("Leave empty if a container exists in dropped target(s) ItemUI.")]
        public GameObject PrefabUI;
        private GameObject instantiatedUI;
        public bool StackAppend = true;

        private int inCount = 1;

        public void AppendUIToTransform(ItemUI itemUI)
        {
            if(AttachToTransform != null)
            {
                if (AttachToTransform != null && FindAttachToScriptInAttachToTransform)
                {
                    AttachTo attachTarget = AttachToTransform.GetComponentInChildren<AttachTo>();
                    if(attachTarget != null)
                        targetParentTransform = attachTarget.transform;
                }
                else
                {
                    targetParentTransform = AttachToTransform;
                }
            }

            if (itemUI != null && targetParentTransform != null)
            {
                if(itemUI.container != null)
                {
                    Debug.Log("Append: " + targetParentTransform.name);
                    itemUI.container.SetActive(true);
                    itemUI.container.transform.SetParent(targetParentTransform, false);
                    Debug.Log("Append: " + "This should be working...");
                }
                else if (itemUI.containerUIPrefab != null)
                {
                    Debug.Log("Creating new");
                    itemUI.container = Instantiate(itemUI.containerUIPrefab, targetParentTransform, false);
                    itemUI.container.name = itemUI.container.name + " " + inCount;
                    inCount++;
                }
            }
        }

       /*public void AppendUIToTransform()
        {
            if (PrefabUI != null && AttachToTransform != null)
            {
                instantiatedUI = Instantiate(PrefabUI, AttachToTransform);
            }
        }

        public void RemoveUIFromTransform()
        {
            if (instantiatedUI != null)
            {
                // TODO: May need to add more here
                Destroy(instantiatedUI);
            }
        }*/

        public void RemoveUIFromTransform(ItemUI itemUI)
        {
            if (itemUI != null)
            {
                if (itemUI.container != null)
                {
                    Debug.Log("AppendUI:Remove:" + itemUI.gameObject.name + itemUI.container.name);
                    itemUI.container.transform.SetParent(itemUI.transform, false);
                    itemUI.container.SetActive(false);
                }
            }
        }

        public GameObject InstantiatedUI()
        {
            return instantiatedUI;
        }
    }
}