using Cysharp.Threading.Tasks;
using System;
using System.Text;
using UnityEngine;
using UnityEngine.Networking;

public class HttpManager : MonoBehaviour
{
    static public int isZhengShi = 3;

    string urlHead = GetUrlHead(isZhengShi);

    static string GetUrlHead(int _isZhengShi)
    {
        string urlHead;
        switch (_isZhengShi)
        {
            case 0:
                urlHead = "http://192.168.0.113:8000/yogame/";
                break;
            case 1:
                urlHead = "http://cat.xiuxiangames.com/yogame/";
                break;
            case 2:
                urlHead = "https://cat.xiuxiangames.com/yogameuat/";
                break;
            case 3:
                urlHead = "https://zshi.gamesverses.com/zsmxj/";
                break;
            default:
                urlHead = "http://192.168.0.113:8000/yogame/"; // 默认地址
                break;
        }

        return urlHead;
    }

    // 单例模式
    public static HttpManager Instance { get; private set; }
    private void Awake()
    {
        // 实现单例模式
        if (Instance != null && Instance != this)
        {
            Destroy(gameObject);
        }
        else
        {
            Instance = this;
            DontDestroyOnLoad(gameObject);
        }
    }

    public async UniTask<T> RequestPost<F, T>(string _url, F req) where F : WWWRequest, new() where T : WWWResponse, new()
    {
        string url = urlHead + _url;
        string json = req.ToJson();

        Debug.Log("Request URL: " + url);
        Debug.Log("Request Body (JSON): " + json);
        Debug.Log("Request Body Length: " + Encoding.UTF8.GetBytes(json).Length);

        try
        {
            // 使用 UnityWebRequest.Post 初始化请求对象
            using (UnityWebRequest www = UnityWebRequest.Post(url, ""))
            {
                www.SetRequestHeader("Content-Type", "application/json;charset=utf-8");
                www.SetRequestHeader("Accept", "*/*");

                // 手动设置 UploadHandler 以发送 JSON 数据
                www.uploadHandler = new UploadHandlerRaw(Encoding.UTF8.GetBytes(json))
                {
                    contentType = "application/json"
                };
                www.downloadHandler = new DownloadHandlerBuffer();

                try
                {
                    UnityWebRequest op = await www.SendWebRequest().ToUniTask();

                    Debug.Log("HTTP Status Code: " + www.responseCode);
                    if (op.result != UnityWebRequest.Result.Success)
                    {
                        Debug.LogError("Error: " + op.error);
                        return null;
                    }

                    if (string.IsNullOrEmpty(op.downloadHandler.text))
                    {
                        Debug.LogError("Empty or null response received.");
                        return null;
                    }

                    Debug.Log("Response Text: " + op.downloadHandler.text);
                    T response = JsonUtility.FromJson<T>(op.downloadHandler.text);
                    return response;
                }
                catch (Exception ex)
                {
                    Debug.LogError("Exception during request: " + ex);
                    return null;
                }
            }
        }
        catch (Exception ex)
        {
            Debug.LogError("Error creating UnityWebRequest: " + ex.Message);
            return null;
        }
    }

    public async UniTask<T> RequestGet<F, T>(string _url, F req) where F : WWWRequest, new() where T : WWWResponse, new()
    {
        string url = urlHead + _url;

        // 将请求对象序列化为 JSON，并进行 URL 编码
        string json = req.ToJson();
        Debug.Log("Request URL: " + url);
        Debug.Log("Request Body (JSON): " + json);
        string encodedQuery = req.ToQueryString();
        url += "?" + encodedQuery;

        Debug.Log("Request URL with Query Parameter: " + url);

        try
        {
            // 使用 UnityWebRequest.Get 初始化请求对象
            using (UnityWebRequest www = UnityWebRequest.Get(url))
            {
                www.SetRequestHeader("Accept", "*/*");

                try
                {
                    UnityWebRequest op = await www.SendWebRequest().ToUniTask();

                    Debug.Log("HTTP Status Code: " + www.responseCode);
                    if (op.result != UnityWebRequest.Result.Success)
                    {
                        Debug.LogError("Error: " + op.error);
                        return null;
                    }

                    if (string.IsNullOrEmpty(op.downloadHandler.text))
                    {
                        Debug.LogError("Empty or null response received.");
                        return null;
                    }

                    Debug.Log("Response Text: " + op.downloadHandler.text);
                    T response = JsonUtility.FromJson<T>(op.downloadHandler.text);
                    return response;
                }
                catch (Exception ex)
                {
                    Debug.LogError("Exception during request: " + ex);
                    return null;
                }
            }
        }
        catch (Exception ex)
        {
            Debug.LogError("Error creating UnityWebRequest: " + ex.Message);
            return null;
        }
    }

}