using Core.Economy;
using KTGMGemClient;
using TMPro;
using TowerDefense.Level;
using UnityEngine;
using DG.Tweening;
using Core.Utilities;

namespace TowerDefense.UI.HUD
{
    /// <summary>
    /// A class for controlling the displaying the currency
    /// </summary>
    public class EndlessCurrencyUI : MonoBehaviour
    {
        /// <summary>
        /// TextMeshPro对应的金币数据
        /// </summary>
        public TextMeshProUGUI DisplayText;

        protected Currency currency;

        private ParticleSystem goldGetPs;//金币获得动画

        /// <summary>
        /// 每秒增加的金币数量
        /// </summary>
        private int addCurrencyPerSecond;

        private float duration;

        /// <summary>
        /// 一秒前金币
        /// </summary>
        private int lastCurrency;

        [SerializeField]
        private GameObject addCurrencyPrefab;

        private void Start()
        {
            goldGetPs = transform.Find("CurrencyImage/Effect_UI_JinBi_HuoDe/Particle System (6)").GetComponent<ParticleSystem>();

            if (EndlessLevelManager.instanceExists)
            {
                currency = EndlessLevelManager.instance.Currency;

                UpdateDisplay();
                currency.currencyChanged += UpdateDisplay;
            }
            else
                Debug.LogError("[UI] No EndlessLevelManager to get currency from");

            EventCenter.Ins.Add((int)KTGMGemClient.EventType.PlayGetGoldPS, PlayGetGoldPS);
        }

        /// <summary>
        /// Unsubscribe from events
        /// </summary>
        protected virtual void OnDestroy()
        {
            if (currency != null)
                currency.currencyChanged -= UpdateDisplay;
        }

        /// <summary>
        /// A method for updating the display based on the current currency
        /// </summary>
        protected void UpdateDisplay()
        {
            int current = currency.currentCurrency;
            int lastCurrency = currency.lastCurrency;
            DisplayText.text = current.ToString();

            if (lastCurrency > 0 && current - lastCurrency > 0)
                ToBig().OnComplete(ToSmall);
        }

        private Tweener ToBig()
        {
            return DOTween.To(
                () => DisplayText.transform.localScale,
                (Vector3 v) => DisplayText.transform.localScale = v,
                new Vector3(1.15f, 1.15f, 1.15f),
                0.15f);
        }

        private void ToSmall()
        {
            DOTween.To(
                () => DisplayText.transform.localScale,
                (Vector3 v) => DisplayText.transform.localScale = v,
                new Vector3(1f, 1f, 1f),
                0.1f);
        }

        public void PlayGetGoldPS()
        {
            goldGetPs.Play();
        }

        /// <summary>
        /// 在数字中加入逗号
        /// </summary>
        /// <param name="str"></param>
        protected string AddNumberSemi(string str)
        {
            int len = str.Length;
            for (int ipos = len - 3; ipos > 0; ipos -= 3)
            {
                str = str.Insert(ipos, ",");
            }
            return str;
        }

        private void Update()
        {
            FloatAddCurrency();
        }

        /// <summary>
        /// 飘1s内增加的金币
        /// </summary>
        private void FloatAddCurrency()
        {
            if (duration <= 0.0001f)
            {
                lastCurrency = currency.currentCurrency;
            }

            duration += Time.deltaTime;

            if (duration >= 1f)
            {
                int add = currency.currentCurrency - lastCurrency;

                if (add > 0)
                {
                    GameObject obj = Instantiate(addCurrencyPrefab);
                    obj.transform.SetParent(GameObject.Find("UICamera/BottomCanvas/Panel/Bottom/CurrencyContainer").transform, false);
                    obj.transform.localPosition = new Vector3(148f, -30f, 0f);
                    obj.transform.localScale = new Vector3(0.66f, 0.66f, 0.66f);
                    TextMeshProUGUI textMeshProUGUI = obj.GetComponent<TextMeshProUGUI>();
                    textMeshProUGUI.text = $"+{add}";

                    DOTween.To(
                        () => obj.transform.localPosition.y,
                        (float v) =>
                            {
                                Vector3 pos = obj.transform.localPosition;
                                pos.y = v;
                                obj.transform.localPosition = pos;
                            },
                        -20f, 0.2f);
                    Destroy(obj, 0.5f);
                }

                duration = 0f;
            }
        }
    }
}