using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Net.NetworkInformation;
using System.Net.Sockets;
using System.Text;
using UnityEngine;
using UnityEngine.Networking;
public enum ADDRESSFAM
{
    IPv4, IPv6
}
public static class InterfaceData
{
    /// <summary>
    /// 发送Get请求
    /// </summary>
    /// <param name="url">地址</param>
    /// <param name="dic">请求参数定义</param>
    /// <returns></returns>
    public static string HttpWebRequestGet(string url, Dictionary<string, string> dic)
    {
        string result = "";
        StringBuilder builder = new StringBuilder();
        builder.Append(url);
        if (dic.Count > 0)
        {
            builder.Append("?");
            int i = 0;
            foreach (var item in dic)
            {
                if (i > 0)
                    builder.Append("&");
                builder.AppendFormat("{0}={1}", item.Key, item.Value);
                i++;
            }
        }
        HttpWebRequest req = (HttpWebRequest)WebRequest.Create(builder.ToString());
        //添加参数
        HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
        Stream stream = resp.GetResponseStream();
        try
        {
            //获取内容
            using (StreamReader reader = new StreamReader(stream))
            {
                result = reader.ReadToEnd();
            }
        }
        finally
        {
            stream.Close();
        }
        Debug.Log("result: " + result);
        return result;
    }
    /// <summary>
    /// Post请求
    /// </summary>
    /// <param name="url"></param>
    /// <param name="fromDic"></param>
    /// <param name="textCallBack"></param>
    /// <returns></returns>
    public static IEnumerator UnityWebRequestPost(string url, Dictionary<string, string> fromDic, Action<string> textCallBack)
    {
        WWWForm form = new WWWForm();
        foreach (var item in fromDic)
        {
            form.AddField(item.Key, item.Value);
        }
        UnityWebRequest request = UnityWebRequest.Post(url, form);
        request.SetRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        yield return request.SendWebRequest();
        if (request.isHttpError || request.isNetworkError)
        {
            Debug.LogError(request.error);
        }
        else
        {
            string result = request.downloadHandler.text;
            textCallBack?.Invoke(result);
        }
    }


    /// <summary>
    /// 获取本机IP
    /// </summary>
    /// <param name="Addfam">要获取的IP类型</param>
    /// <returns></returns>
    public static string GetIP(ADDRESSFAM Addfam)
    {
        if (Addfam == ADDRESSFAM.IPv6 && !Socket.OSSupportsIPv6)
        {
            return null;
        }

        string output = "";

        foreach (NetworkInterface item in NetworkInterface.GetAllNetworkInterfaces())
        {
#if UNITY_EDITOR_WIN || UNITY_STANDALONE_WIN
            NetworkInterfaceType _type1 = NetworkInterfaceType.Wireless80211;
            NetworkInterfaceType _type2 = NetworkInterfaceType.Ethernet;

            if ((item.NetworkInterfaceType == _type1 || item.NetworkInterfaceType == _type2) && item.OperationalStatus == OperationalStatus.Up)
#endif 
            {
                foreach (UnicastIPAddressInformation ip in item.GetIPProperties().UnicastAddresses)
                {
                    //IPv4
                    if (Addfam == ADDRESSFAM.IPv4)
                    {
                        if (ip.Address.AddressFamily == AddressFamily.InterNetwork)
                        {
                            output = ip.Address.ToString();
                            //Debug.Log("IP:" + output);
                        }
                    }

                    //IPv6
                    else if (Addfam == ADDRESSFAM.IPv6)
                    {
                        if (ip.Address.AddressFamily == AddressFamily.InterNetworkV6)
                        {
                            output = ip.Address.ToString();
                        }
                    }
                }
            }
        }
        return output;
    }

}