//--------------------------------------------------------
//    [Author]:           第二世界
//    [  Date ]:           Friday, September 08, 2017
//--------------------------------------------------------

using System.Collections.Generic;
using UnityEngine;

namespace Snxxz.UI
{
    public class NewItemGetWin : Window
    {
        [SerializeField] Transform m_StartPoint;
        [SerializeField] Transform m_EndPoint;

        Queue<string> newItemQueue = new Queue<string>();
        List<GameObject> showingItems = new List<GameObject>();

        float nextShowTime = 0f;

        PlayerPackModel playerPack { get { return ModelCenter.Instance.GetModel<PlayerPackModel>(); } }
        PackModelInterface modelInterface { get { return ModelCenter.Instance.GetModel<PackModelInterface>(); } }

        #region Built-in
        protected override void BindController()
        {
            InitPool();
        }

        protected override void AddListeners()
        {
        }

        protected override void OnPreOpen()
        {
            modelInterface.RefreshPickItemEvent += OnGetNewItem;
        }

        protected override void OnAfterOpen()
        {
        }

        protected override void OnPreClose()
        {
            modelInterface.RefreshPickItemEvent -= OnGetNewItem;
            for (int i = 0; i < showingItems.Count; i++)
            {
                var item = showingItems[i];
                itemGetBehaviourPool.Release(item);
            }

            showingItems.Clear();
        }

        protected override void OnAfterClose()
        {
        }

        #endregion

        private void OnGetNewItem(PackType type, string guid)
        {
            if (newItemQueue.Count >= 10)
            {
                newItemQueue.Dequeue();
            }

            newItemQueue.Enqueue(guid);
        }

        protected override void LateUpdate()
        {
            base.LateUpdate();

            if (newItemQueue.Count > 0 && Time.time > nextShowTime)
            {
                nextShowTime = Time.time + 0.2f;

                ItemModel model = null;
                do
                {
                    var guid = newItemQueue.Dequeue();
                    model = playerPack.GetItemModelByGUID(guid);
                }
                while (model == null && newItemQueue.Count > 0);

                if (model != null)
                {
                    int itemId = model.itemInfo.ItemID;
                    var itemBehaviour = RequireBehaviour();
                    if (itemBehaviour != null)
                    {
                        itemBehaviour.transform.SetParentEx(this.transform, Vector3.zero, Quaternion.identity, Vector3.one);
                        itemBehaviour.Begin(new Item(itemId, 1), m_StartPoint.localPosition, m_EndPoint.localPosition, OnBehaviourFinished);
                        showingItems.Add(itemBehaviour.gameObject);
                    }
                }

            }

        }

        private void OnBehaviourFinished()
        {
            ReycleUnShowingItem();
        }

        GameObjectPoolManager.GameObjectPool itemGetBehaviourPool;

        private void InitPool()
        {
            var prefab = UILoader.LoadPrefab("NewItemGetBehaviour");
            if (prefab != null)
            {
                itemGetBehaviourPool = GameObjectPoolManager.Instance.RequestPool(prefab);
            }
        }

        private NewItemGetBehaviour RequireBehaviour()
        {
            var item = itemGetBehaviourPool.Request();
            return item.GetComponent<NewItemGetBehaviour>();
        }

        private void ReycleUnShowingItem()
        {
            for (int i = showingItems.Count - 1; i >= 0; i--)
            {
                var item = showingItems[i];
                if (!item.activeInHierarchy)
                {
                    itemGetBehaviourPool.Release(item);
                    item.transform.SetParent(null);
                    item.SetActive(false);
                    showingItems.Remove(item);
                }
            }

        }
    }


}