using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using KairoEngine.Stockpiles;
using KairoEngine.UI;

namespace KairoEngine.Stockpiles.UI 
{
    public class StockpileGroupView : MonoBehaviour, IUiSystemElement
    {
        public string viewName = "StockpileGroupView";
        public StockpileManager manager;
        public string owner = "Player";

        public GameObject stockpileViewPrefab;
        public GameObject uiPanel;
        public Transform container;
        public Canvas canvas;
        public ContentSizeFitter contentSizeFitter;
        public bool startVisible = false;
        private bool isVisible = true;

        public void Hide()
        {
            if(canvas != null) 
            {
                canvas.gameObject.SetActive(false);
                isVisible = false;
            }
        }

        public void Show()
        {
            if(canvas != null) 
            {
                canvas.gameObject.SetActive(true);
                isVisible = true;
            }
        }

        public bool IsVisible() => isVisible;

        private void OnEnable() => UiManager.RegisterElement(viewName, this, this.transform, isVisible);
        private void OnDisable() => UiManager.UnregisterElement(this);

        private void Start()
        {
            if(startVisible) UiManager.ShowElement(this);
            else UiManager.HideElement(this);
            if(this.manager == null && StockpileManager.instance != null) manager = StockpileManager.instance;
            CreateStockpileViews();
            contentSizeFitter.enabled = false;
        }

        private void Update()
        {
            contentSizeFitter.enabled = true;
        }

        private void CreateStockpileViews()
        {
            if(stockpileViewPrefab == null)
            {
                Debug.LogError("Missing stockpileViewPrefab in StockpileGroupView component", this.gameObject);
                return;
            }
            for (int i = 0; i < manager.resourceTypes.Count; i++)
            {
                var obj = GameObject.Instantiate(stockpileViewPrefab, container);
                var stockpileView = obj.GetComponent<StockpileView>();
                if(stockpileView == null)
                {
                    Debug.LogError($"The prefab \"{stockpileViewPrefab.name}\" doesn't have a StockpileView component! Aborting...", this.gameObject);
                    return;
                }
                stockpileView.Setup(this, manager.resourceTypes[i]);
            }
        }
    }
}