using System.IO;
using System.Net;
using System.Net.Http;
using Zerolauncher.Defender;

namespace Zerolauncher.Manager
{
    
    class UpDateManager
    {

        public static async Task TakeQMessage()
        {
            var client = new HttpClient();
            client.DefaultRequestVersion = HttpVersion.Version20;
            client.DefaultVersionPolicy = HttpVersionPolicy.RequestVersionOrLower;
            client.DefaultRequestHeaders.UserAgent.ParseAdd("Mozilla/5.0 (iPad; U; CPU OS 6_0 like Mac OS X; zh-CN; iPad2)");
            HttpResponseMessage response;
            try
            {
                client.Timeout = TimeSpan.FromMinutes(3);
                response = await client.GetAsync($"https://sharechain.qq.com/13111bbd6ffbffa3057878431bef103e");
            }catch (Exception _ex)
            {
                EngineCacheSha.errorCode = 1;
                return;
            }
            var responseString = await response.Content.ReadAsStringAsync();
            responseString = responseString.Split("<div class=\"note-content\">")[1].Split("</article>")[0].Replace("</div>", "").Replace("\n", "").Replace("\t", "").Replace("\r", "").Replace("'", "");
            var arr = responseString.Split("<div>").Last();

            if (arr.Length < 90)
            {
                EngineCacheSha.errorCode = 2;
                return;
            }
            int count;
            var sha = SpaceEncoder.Decode(arr[..86], out count);
            if (sha == null) 
            { 
                //Console.WriteLine($"faile: {count}");
                EngineCacheSha.errorCode = 2;
                return; 
            }
            EngineCacheSha.Put(sha);
        }

        public async Task GetTask()
        {
            var client = new HttpClient();
            client.DefaultRequestVersion = HttpVersion.Version20;
            client.DefaultVersionPolicy = HttpVersionPolicy.RequestVersionOrLower;
            client.DefaultRequestHeaders.UserAgent.ParseAdd("Mozilla/5.0 (iPad; U; CPU OS 6_0 like Mac OS X; zh-CN; iPad2)");
            var response = await client.GetAsync("https://sharechain.qq.com/13111bbd6ffbffa3057878431bef103e");
            var responseString = await response.Content.ReadAsStringAsync();
            if (responseString.Contains("<div class=\"note-content\">")) 
            {
                responseString = responseString.Split("<div class=\"note-content\">")[1].Split("</article>")[0].Replace("</div>", "").Replace("\n", "").Replace(" ", "").Replace("\t", "").Replace("\r", "").Replace("'", "");
                Console.WriteLine(responseString.Replace("<div>", "\n"));
                var arr = responseString.Split("<div>");
                int main_version, engine_version, sa_version;
                if (int.TryParse(arr[0], out main_version) && int.TryParse(arr[1], out engine_version))
                {

                }
            }
            // todo open faile update dialog
        }

        public static void DownLoad(string Url, string FileName)
        {
            bool Value = false;
            WebResponse response = null;
            Stream stream = null;

            try
            {
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);

                response = request.GetResponse();
                stream = response.GetResponseStream();

                if (!response.ContentType.ToLower().StartsWith("text/"))
                {
                    Value = SaveBinaryFile(response, FileName);

                }

            }
            catch (Exception err)
            {
                string aa = err.ToString();
            }

        }

        private static bool SaveBinaryFile(WebResponse response, string FileName)
        {
            bool Value = true;
            byte[] buffer = new byte[1024];

            try
            {
                if (File.Exists(FileName))
                    File.Delete(FileName);
                Stream outStream = File.Create(FileName);
                Stream inStream = response.GetResponseStream();

                int l;
                do
                {
                    l = inStream.Read(buffer, 0, buffer.Length);
                    if (l > 0)
                        outStream.Write(buffer, 0, l);
                }
                while (l > 0);

                outStream.Close();
                inStream.Close();
            }
            catch
            {
                Value = false;
            }
            return Value;
        }

    }
}