using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Text;
using Cysharp.Threading.Tasks;
using UnityEngine;
using UnityEngine.Networking;


public class HttpRequest : SingletonMonobehaviour<HttpRequest>

{
    public const string defaultHttpContentType = "application/x-www-form-urlencoded";
    public const string jsonHttpContentType = "application/json ; charset=utf-8";

    public async void RequestHttpPost(string _url, IDictionary<string, string> _parameters, string _contentType, int _retry = 3, Action<bool, string> _result = null)
    {
        var content = HashtablaToString(_parameters);
         var task = HttpBehaviour.CreateAsync(_url, "POST", content, _contentType, _retry, _result);
         task.Forget();
    }

    public async void RequestHttpPost(string _url, string _content, string _contentType, int _retry = 3, Action<bool, string> _result = null)
    {
         var task = HttpBehaviour.CreateAsync(_url, "POST", _content, _contentType, _retry, _result);
         task.Forget();
    }

    public async void RequestHttpGet(string _url, string _contentType, int _retry = 3, Action<bool, string> _result = null)
    {
         var task = HttpBehaviour.CreateAsync(_url, "GET", "", _contentType, _retry, _result);
         task.Forget();
    }

    public async UniTask<(bool ok, string message)> UnityWebRequestGetAsync(string _url, string _contentType, int _retry = 3, Action<bool, string> _result = null)
    {
        return await HttpBehaviour.CreateAsync(_url, "GET", "", _contentType, _retry, _result);
    }

    //2024-09-26 HttpWebRequest Get CDN资源在某些节日可能无法访问 包含keepalive的设定等不同情况 改用UnityWebRequest
    //获取CDN资源不建议使用HttpWebRequest
    public async UniTask<(bool ok, string message)> UnityWebRequestGet(string _url, int timeout = 5, Action<bool, string> _result = null)
    {
        return await GetDataAsync(_url, timeout, _result);
    }

    private static async UniTask<(bool ok, string message)> GetDataAsync(string remoteURL, int timeout, Action<bool, string> _result = null)
    {
        using (UnityWebRequest request = UnityWebRequest.Get(remoteURL))
        {
            request.timeout = timeout;
            await request.SendWebRequest();

            var ok = request.result == UnityWebRequest.Result.Success;
            var message = ok ? request.downloadHandler.text : request.error;
            _result?.Invoke(ok, message);
            return (ok, message);
        }
    }

    

    static StringBuilder buffer = new StringBuilder();
    public static string HashtablaToString(IDictionary<string, string> parameters)
    {
        buffer.Remove(0, buffer.Length);
        int i = 0;
        foreach (KeyValuePair<string, string> item in parameters)
        {
            if (i > 0)
            {
                buffer.AppendFormat("&{0}={1}", item.Key, item.Value);
            }
            else
            {
                buffer.AppendFormat("{0}={1}", item.Key, item.Value);
            }
            i++;
        }
        string result = buffer.ToString();
        return result;
    }

}