using System.Collections;
using System.Collections.Generic;
using Cysharp.Threading.Tasks;
using LitJson;
using UnityEngine;
using UnityEngine.Networking;

public class Downloader
{
    public static async UniTask<T> DownloadJSONAsync<T>(string url) where T:class
    {
        using (UnityWebRequest webRequest = UnityWebRequest.Get(url))
        {
            // 发送请求并等待响应
            await webRequest.SendWebRequest().ToUniTask();

            if (webRequest.result == UnityWebRequest.Result.ConnectionError || webRequest.result == UnityWebRequest.Result.ProtocolError)
            {
                Debug.LogError("Error: " + webRequest.error);
                return default(T);
            }



            if (string.IsNullOrEmpty(webRequest.downloadHandler.text))
                return default(T);
            Debug.Log($"## 下载到json ：{webRequest.downloadHandler.text}");

            // 返回下载的 JSON 字符串
            return JsonMapper.ToObject<T>(webRequest.downloadHandler.text);
            //return webRequest.downloadHandler.text;
        }
    }
}