using System.Collections;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

namespace BulletHellTemplate
{
    public class CurrencyDisplay : MonoBehaviour
    {
        [Header("Currency Settings")]
        public string currencyID;
        public TextMeshProUGUI currencyAmount;
        public Image currencyIcon;

        [Header("Recharge UI (only used if isRechargeable is true)")]
        public bool isRechargeable;
        public TextMeshProUGUI rechargeAmount;
        public TextMeshProUGUI nextRechargeTime;

        private Currency _currencyData;

        private float timeLeftForNextCharge = 0f;
        private bool isAtMax = false;

        private void OnEnable()
        {
            MonetizationManager.OnCurrencyChanged += UpdateCurrencyDisplay;
            ForceUpdateCurrency();
        }

        private void OnDisable()
        {
            MonetizationManager.OnCurrencyChanged -= UpdateCurrencyDisplay;
        }

        private void Start()
        {
            StartCoroutine(InitializeCurrencyDisplay());
        }

        private IEnumerator InitializeCurrencyDisplay()
        {
            while (MonetizationManager.Singleton == null)
                yield return null;

            foreach (Currency item in MonetizationManager.Singleton.currencies)
            {
                if (item != null && item.coinID == currencyID)
                {
                    _currencyData = item;
                    break;
                }
            }

            if (_currencyData != null && currencyIcon != null)
                currencyIcon.sprite = _currencyData.icon;

            ForceUpdateCurrency();

            if (isRechargeable && _currencyData != null && _currencyData.isRechargeableCurrency)
            {
                float chunkDuration = GetSecondsByScale(_currencyData.rechargeableTime, _currencyData.rechargeableTimeScale);
                int current = MonetizationManager.GetCurrency(currencyID);

                if (_currencyData.useMaxAmount && current >= _currencyData.maxAmount && !_currencyData.canExceedMaxValue)
                {
                    timeLeftForNextCharge = 0;
                    isAtMax = true;
                }
                else
                {
                    timeLeftForNextCharge = chunkDuration;
                    isAtMax = false;
                }
            }

            UpdateRechargeUI(true);
        }

        private void Update()
        {
            if (!isRechargeable || _currencyData == null || !_currencyData.isRechargeableCurrency)
                return;


            if (isAtMax) return;
            timeLeftForNextCharge -= Time.deltaTime;
            if (timeLeftForNextCharge <= 0f)
            {
 
                bool reachedMax = RechargeablesManager.Singleton.ApplyAllPendingCharges(_currencyData);

                ForceUpdateCurrency();

                if (reachedMax)
                {
                    isAtMax = true;
                    timeLeftForNextCharge = 0f;
                }
                else
                {
                    float chunkDuration = GetSecondsByScale(_currencyData.rechargeableTime, _currencyData.rechargeableTimeScale);
                    timeLeftForNextCharge = chunkDuration;
                }
            }

            UpdateRechargeUI();
        }

        public void ForceUpdateCurrency()
        {
            UpdateCurrencyDisplay(currencyID, MonetizationManager.GetCurrency(currencyID));
        }

        private void UpdateCurrencyDisplay(string changedCurrency, int amount)
        {
            if (changedCurrency == currencyID && currencyAmount != null)
                currencyAmount.text = amount.ToString();
        }

        private void UpdateRechargeUI(bool forceShow = false)
        {
            if (_currencyData == null || !_currencyData.isRechargeableCurrency || !isRechargeable)
            {
                if (rechargeAmount) rechargeAmount.gameObject.SetActive(false);
                if (nextRechargeTime) nextRechargeTime.gameObject.SetActive(false);
                return;
            }

            if (rechargeAmount) rechargeAmount.gameObject.SetActive(true);
            if (nextRechargeTime) nextRechargeTime.gameObject.SetActive(true);

            int current = MonetizationManager.GetCurrency(currencyID);

            if (_currencyData.useMaxAmount && current >= _currencyData.maxAmount && !_currencyData.canExceedMaxValue)
            {
                if (rechargeAmount) rechargeAmount.text = "";
                if (nextRechargeTime) nextRechargeTime.text = "";
                return;
            }
            else
            {

                if (rechargeAmount) rechargeAmount.text = $"+{_currencyData.rechargeAmount}";
            }

            if (nextRechargeTime)
            {
                if (timeLeftForNextCharge <= 0)
                    nextRechargeTime.text = "0s";
                else
                    nextRechargeTime.text = $"{Mathf.CeilToInt(timeLeftForNextCharge)}s";
            }
        }

        private float GetSecondsByScale(float timeValue, rechargeableTimeScale scale)
        {
            switch (scale)
            {
                case rechargeableTimeScale.Seconds: return timeValue;
                case rechargeableTimeScale.Minutes: return timeValue * 60f;
                case rechargeableTimeScale.Hours: return timeValue * 3600f;
                default: return timeValue;
            }
        }
    }
}