using System.Collections.Generic;
using UnityEngine.UI;
using UnityEngine;
using TowerDefense.Level;

/**
 * 无尽模式buff预览
 * @Author: chenxin
 * @Date: 2020-11-12 10:01:36
 */
namespace KTGMGemClient
{
    public class EndlessBuffPreview : MonoBehaviour
    {
        /// <summary>
        /// buff预览界面
        /// </summary>
        public GameObject Panel;

        public GameObject Content;

        /// <summary>
        /// buff预览界面返回按钮
        /// </summary>
        public Button BackBtn;

        /// <summary>
        /// 未获得buff提示文字
        /// </summary>
        public Text NoBuffText;

        private float preTimeScale;

        // Start is called before the first frame update
        private void Start()
        {
            GetComponent<Button>().onClick.AddListener(OnClick);
            BackBtn.onClick.AddListener(HideBuffPreview);
            EventCenter.Ins.Add((int)KTGMGemClient.EventType.EndlessBuffRefresh, Refresh);
            Panel.SetActive(false);
        }

        public void OnClick()
        {
            if (GameConfig.IsNewbie) return;

            ShowBuffPreview();
        }

        private void Refresh()
        {
            ClearContent();

            List<EndlessBuffConfig> buffList = EndlessBuffManager.instance.BuffList;

            if (buffList.Count == 0)
            {
                NoBuffText.gameObject.SetActive(true);
                return;
            }

            NoBuffText.gameObject.SetActive(false);

            for (int i = 0; i < buffList.Count; ++i)
            {
                GameObject prefab = Resources.Load<GameObject>("UI/BuffPreview/BuffItem");
                GameObject item = Instantiate(prefab);
                item.transform.SetParent(Content.transform, false);

                SelectBuffIcon buffSelect = item.GetComponent<SelectBuffIcon>();
                buffSelect.SetIcon(buffList[i].Config.image);
                buffSelect.SetQuality(buffList[i].Config.rare);
                buffSelect.SetName(buffList[i].Config.name);
                buffSelect.SetEffect(buffList[i].Config.brief);
                buffSelect.SetRare(buffList[i].Config.rare);
            }
        }

        private void ClearContent()
        {
            for (int i = Content.transform.childCount - 1; i >= 0; --i)
            {
                Destroy(Content.transform.GetChild(i).gameObject);
            }
        }

        private void ShowBuffPreview()
        {
            preTimeScale = Time.timeScale;
            Time.timeScale = 0;
            Refresh();
            Panel.SetActive(true);
        }

        private void HideBuffPreview()
        {
            Time.timeScale = preTimeScale;
            Panel.SetActive(false);
        }
    }
}