#if !DISABLE_PLAYFABCLIENT_API && !DISABLE_PLAYFAB_STATIC_API
using System;
using System.Threading.Tasks;
using UnityEngine;

namespace asap.playfab.async
{
    public static partial class PlayFabClientAsyncAPI
    {
        /// <summary>
        /// 通用重试封装，将任意返回 Task&lt;T&gt; 的 PlayFab API 调用包裹在重试逻辑中。
        /// 当 API 调用返回 null（即发生错误）时触发重试，采用指数退避策略。
        /// </summary>
        /// <typeparam name="T">API 返回结果类型</typeparam>
        /// <param name="apiCall">要执行的 API 调用，形如 () => PlayFabClientAsyncAPI.XxxAsync(request)</param>
        /// <param name="maxRetries">最大重试次数，默认 3 次</param>
        /// <param name="retryDelaySeconds">首次重试等待秒数，每次重试翻倍（指数退避），默认 1 秒</param>
        /// <returns>成功时返回结果对象，所有重试均失败后返回 null</returns>
        public static async Task<T> ExecuteWithRetryAsync<T>(
            Func<Task<T>> apiCall,
            int maxRetries = 3,
            float retryDelaySeconds = 1f) where T : class
        {
            var attempts = 0;
            while (true)
            {
                var result = await apiCall();
                if (result != null)
                    return result;

                if (attempts >= maxRetries)
                {
                    Debug.LogWarning($"[PlayFabRetry] 已达到最大重试次数 {maxRetries}，放弃重试。");
                    return null;
                }

                var delaySeconds = retryDelaySeconds * Mathf.Pow(2f, attempts);
                Debug.LogWarning($"[PlayFabRetry] 第 {attempts + 1} 次重试，等待 {delaySeconds:F1} 秒后重试...");
                await Task.Delay(TimeSpan.FromSeconds(delaySeconds));
                attempts++;
            }
        }
    }
}
#endif