using Framework;
using System;
using TMPro;
using UnityEngine;

/// <summary>
/// 控制高级账户剩余天数UI的显示和更新
/// </summary>
public class PremiumRemainingDaysUI : MonoBehaviour
{
    [Header("显示剩余天数的文本组件")]
    [SerializeField] private TextMeshProUGUI remainingDaysText;

    private void OnEnable()
    {
        EventManager.Instance.Register<PremiumStatusChangedEvent>(EventManager.EventName.PremiumStatusRefresh, OnPremiumStatusChanged);
        EventManager.Instance.Send(EventManager.EventName.RequestPremiumStatus);
    }

    private void OnDisable()
    {
        EventManager.Instance.Unregister<PremiumStatusChangedEvent>(EventManager.EventName.PremiumStatusRefresh, OnPremiumStatusChanged);
        CancelInvoke(nameof(UpdateDaily));
    }

    private void OnPremiumStatusChanged(PremiumStatusChangedEvent eventData)
    {
        if (eventData.IsActivated && eventData.ExpirationTimestamp > 0)
        {
            gameObject.transform.localScale = Vector3.one;
                        UpdateRemainingDays(eventData.RemainingSeconds);

            // 为了防止重复调用，先取消之前的
            CancelInvoke(nameof(UpdateDaily));

            // 安排一个每日更新任务，在第二天的零点过1秒后触发
            DateTime now = DateTime.Now;
            DateTime tomorrow = now.AddDays(1).Date;
            double secondsUntilTomorrow = (tomorrow - now).TotalSeconds;
            Invoke(nameof(UpdateDaily), (float)secondsUntilTomorrow + 1);
        }
        else
        {
            gameObject.transform.localScale = Vector3.zero;
            CancelInvoke(nameof(UpdateDaily));
        }
    }

    /// <summary>
    /// 每日自动更新的函数
    /// </summary>
    private void UpdateDaily()
    {
        // 重新请求一下最新状态，保证数据准确性，并重新安排下一次更新
        EventManager.Instance.Send(EventManager.EventName.RequestPremiumStatus);
    }

    /// <summary>
    /// 根据剩余时间（秒）更新UI
    /// </summary>
    private void UpdateRemainingDays(long remainingSeconds)
    {
        if (remainingDaysText == null) return;

        TimeSpan remainingTime = TimeSpan.FromSeconds(remainingSeconds);

        // 向上取整，例如剩余1.1天，也算作2天。如果小于0则为0。
        int days = Math.Max(0, (int)Math.Ceiling(remainingTime.TotalDays));

        int hours = remainingTime.Hours;
        if (days > 0)
        {
            remainingDaysText.text = StringManager.Instance.GetLocalizeTextByKeyAndParams("PremiumPerk_Remain_Day", days);
        }
        else
        {
            remainingDaysText.text = StringManager.Instance.GetLocalizeTextByKeyAndParams("PremiumPerk_Remain_Hour", hours);
        }
    }
}