using System.Collections;
using UnityEngine;
using System;
using UnityEngine.Networking;
using System.Text;
using GFGGame.Launcher;

namespace GFGGame
{
    /// <summary>
    /// Http Request SDK 
    /// </summary>
    public class HttpTool : SingletonMonoBase<HttpTool>
    {

        public void Get(string prefixUrl, string methodName, Action<string> callback)
        {
            StartCoroutine(GetRequest(prefixUrl, methodName, callback));
        }

        public IEnumerator GetRequest(string prefixUrl, string methodName, Action<string> callback)
        {
            string url = prefixUrl + methodName;
            Debug.Log("get url : " + url);
            using (UnityWebRequest webRequest = UnityWebRequest.Get(url))
            {
                webRequest.timeout = LauncherConfig.HTTP_GET_TIME_OUT;
                yield return webRequest.SendWebRequest();
                ResultHandler(webRequest, callback, prefixUrl, () =>
                {
                    Get(prefixUrl, methodName, callback);
                });
            }
        }

        //jsonString 为json字符串，post提交的数据包为json
        public void Post(string prefixUrl, string methodName, string jsonString, Action<string> callback)
        {
            StartCoroutine(PostRequest(prefixUrl, methodName, jsonString, callback));
        }

        public IEnumerator PostRequest(string prefixUrl, string methodName, string jsonString, Action<string> callback)
        {
            string url = prefixUrl + methodName;
             Debug.Log(string.Format("post url:{0} postData:{1}", url, jsonString));
            using (UnityWebRequest webRequest = new UnityWebRequest(url, "POST"))
            {
                byte[] bodyRaw = Encoding.UTF8.GetBytes(jsonString);
                webRequest.uploadHandler = (UploadHandler)new UploadHandlerRaw(bodyRaw);
                webRequest.downloadHandler = (DownloadHandler)new DownloadHandlerBuffer();
                webRequest.timeout = LauncherConfig.HTTP_POST_TIME_OUT;
                //http header 的内容
                webRequest.SetRequestHeader("Content-Type", "application/json");
                // webRequest.timeout;
                yield return webRequest.SendWebRequest();
                ResultHandler(webRequest, callback, jsonString, () =>
                {
                    Post(prefixUrl, methodName, jsonString, callback);
                });
            }
        }

        public void ResultHandler(UnityWebRequest webRequest, Action<string> callback, string tag, Action retryCall)
        {
            string paramCallback = null;
            if (webRequest.result == UnityWebRequest.Result.ProtocolError || webRequest.result == UnityWebRequest.Result.ConnectionError)
            {
                Debug.LogError(webRequest.error + "\n" + webRequest.downloadHandler.text);
                Alert.Show("连接服务器失败：\n请检查网络和服务器状态")
                .SetRightButton(true, "重试", (object data) =>
                {
                    retryCall();
                });
            }
            else
            {
                 Debug.Log("from server " + webRequest.downloadHandler.text + "\nby " + tag);
                paramCallback = webRequest.downloadHandler.text;
                //paramCallback = System.Text.Encoding.UTF8.GetString(webRequest.downloadHandler.data, 3, webRequest.downloadHandler.data.Length - 3);
                callback?.Invoke(paramCallback);
            }
        }
    }
}