using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc.ModelBinding.Binders;
using MX.Core.Crypto;
using Newtonsoft.Json.Linq;
using SCHALE.Common.Crypto;
using SCHALE.Common.Crypto.XXHash;
using SCHALE.Common.FlatData;
using SCHALE.Common.NetworkProtocol;
using SCHALE.GameServer.Services.Irc;
using Serilog;
using System.IO.Compression;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Reflection.PortableExecutable;
using System.Runtime.InteropServices;
using System.Security.Policy;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;

namespace SCHALE.GameServer.Services
{
    public class PrivateClientService : BackgroundService
    {
        private readonly HttpClient _httpClient;

        public static readonly string API_URL = "http://10.0.0.149/api/gateway";
        public static readonly string MITM_URL = "http://10.0.0.149:8080";
        public static readonly string OFFICIAL_API_URL = "http://prod-gateway.bluearchiveyostar.com:5100/api/";
        // https://prod-game.bluearchiveyostar.com:5000/api/gateway
        //public static readonly string OFFICIAL_API_URL = "https://prod-gateway.bluearchiveyostar.com:5100/api/";
        public static readonly string OFFICIAL_API_URL_Test = "ec2-52-68-9-200.ap-northeast-1.compute.amazonaws.com";
        // https://prod-game.bluearchiveyostar.com:5000/api/
        public static readonly string SessionKey = "";

        public static uint[] crc_table = [0, 79764919, 159529838, 222504665, 319059676, 398814059, 445009330, 507990021, 638119352, 583659535, 797628118, 726387553, 890018660, 835552979, 1015980042, 944750013, 1276238704, 1221641927, 1167319070, 1095957929, 1595256236, 1540665371, 1452775106, 1381403509, 1780037320, 1859660671, 1671105958, 1733955601, 2031960084, 2111593891, 1889500026, 1952343757, 2552477408, 2632100695, 2443283854, 2506133561, 2334638140, 2414271883, 2191915858, 2254759653, 3190512472, 3135915759, 3081330742, 3009969537, 2905550212, 2850959411, 2762807018, 2691435357, 3560074640, 3505614887, 3719321342, 3648080713, 3342211916, 3287746299, 3467911202, 3396681109, 4063920168, 4143685023, 4223187782, 4286162673, 3779000052, 3858754371, 3904687514, 3967668269, 881225847, 809987520, 1023691545, 969234094, 662832811, 591600412, 771767749, 717299826, 311336399, 374308984, 453813921, 533576470, 25881363, 88864420, 134795389, 214552010, 2023205639, 2086057648, 1897238633, 1976864222, 1804852699, 1867694188, 1645340341, 1724971778, 1587496639, 1516133128, 1461550545, 1406951526, 1302016099, 1230646740, 1142491917, 1087903418, 2896545431, 2825181984, 2770861561, 2716262478, 3215044683, 3143675388, 3055782693, 3001194130, 2326604591, 2389456536, 2200899649, 2280525302, 2578013683, 2640855108, 2418763421, 2498394922, 3769900519, 3832873040, 3912640137, 3992402750, 4088425275, 4151408268, 4197601365, 4277358050, 3334271071, 3263032808, 3476998961, 3422541446, 3585640067, 3514407732, 3694837229, 3640369242, 1762451694, 1842216281, 1619975040, 1682949687, 2047383090, 2127137669, 1938468188, 2001449195, 1325665622, 1271206113, 1183200824, 1111960463, 1543535498, 1489069629, 1434599652, 1363369299, 622672798, 568075817, 748617968, 677256519, 907627842, 853037301, 1067152940, 995781531, 51762726, 131386257, 177728840, 240578815, 269590778, 349224269, 429104020, 491947555, 4046411278, 4126034873, 4172115296, 4234965207, 3794477266, 3874110821, 3953728444, 4016571915, 3609705398, 3555108353, 3735388376, 3664026991, 3290680682, 3236090077, 3449943556, 3378572211, 3174993278, 3120533705, 3032266256, 2961025959, 2923101090, 2868635157, 2813903052, 2742672763, 2604032198, 2683796849, 2461293480, 2524268063, 2284983834, 2364738477, 2175806836, 2238787779, 1569362073, 1498123566, 1409854455, 1355396672, 1317987909, 1246755826, 1192025387, 1137557660, 2072149281, 2135122070, 1912620623, 1992383480, 1753615357, 1816598090, 1627664531, 1707420964, 295390185, 358241886, 404320391, 483945776, 43990325, 106832002, 186451547, 266083308, 932423249, 861060070, 1041341759, 986742920, 613929101, 542559546, 756411363, 701822548, 3316196985, 3244833742, 3425377559, 3370778784, 3601682597, 3530312978, 3744426955, 3689838204, 3819031489, 3881883254, 3928223919, 4007849240, 4037393693, 4100235434, 4180117107, 4259748804, 2310601993, 2373574846, 2151335527, 2231098320, 2596047829, 2659030626, 2470359227, 2550115596, 2947551409, 2876312838, 2788305887, 2733848168, 3165939309, 3094707162, 3040238851, 2985771188];
        public readonly uint POLYNOMIAL = 8;
        public readonly uint MASK = 0;

        public PrivateClientService(HttpClient httpClient)
        {
            _httpClient = httpClient;
        }

        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
        {
            //await SendPostRequestAsync(OFFICIAL_API_URL, JsonSerializer.Serialize(new AcademyGetInfoRequest()
            //{
            //    ClientUpTime = 1,
            //    Resendable = true,
            //    Hash = ,
            //    IsTest = false,
            //    SessionKey = new()
            //    {
            //        AccountServerId = ,
            //        MxToken = ""
            //    },
            //}));


            await SendPostRequestAsync(OFFICIAL_API_URL, JsonSerializer.Serialize(new ShopBuyGacha3Request()
            {
                FreeRecruitId = 0,
                SessionKey = new()
                {
                    AccountServerId = ,
                    MxToken = SessionKey,
                },

                Cost = new()
                {
                    ParcelInfos = [
                        new()
                        {
                            Key = new()
                            {
                                Type = ParcelType.Currency,
                                Id = 4,
                            },
                            Amount = 120,
                            Multiplier = new(10000),
                            Probability = new(10000)
                        }
                    ],

                    Currency = new()
                    {
                        currencyValue = new()
                        {
                            Values = new()
                            {
                                { CurrencyTypes.Gem, 120 }
                            },
                            Tickets = new() { },
                            Property = new() { },
                            Gem = 120,
                            IsEmpty = false
                        },

                        Gold = 0,
                        Gem = 120,

                    },
                    EquipmentDBs = [],
                    ItemDBs = [],
                    FurnitureDBs = [],
                    ConsumeCondition = 0,
                },
                GoodsId = 35838,
                ShopUniqueId = 50667,
                ClientUpTime = 0,
                Resendable = true,
                Hash = ,
                IsTest = false,
            }));
        }

        public bool GetCRC(byte[] buffer, int offset, int length, out uint crc)
        {
            if (buffer == null || offset < 0 || length < 0 || offset + length > buffer.Length)
            {
                crc = 0;
                return false;
            }

            crc = MASK;
            for (int i = offset; i < offset + length; i++)
            {
                byte index = (byte)((crc ^ buffer[i]) & 0xFF);
                crc = (crc >> 8) ^ crc_table[index];
            }
            crc ^= MASK;
            return true;
        }


        public static byte[] CompressToByteArray(byte[] data)
        {
            if (data == null || data.Length == 0)
                return null;

            using (var output = new MemoryStream())
            {
                using (var gzipStream = new GZipStream(output, CompressionMode.Compress))
                {
                    gzipStream.Write(data, 0, data.Length);
                }
                // Get the compressed data as a byte array
                return output.ToArray();
            }
        }

        public static byte[] RequestToBinary(string jsonStr)
        {
            byte[] jsonPayload = Encoding.UTF8.GetBytes(jsonStr);
            byte[] payloadCompressed = CompressToByteArray(jsonPayload);

            XOR.Crypt(payloadCompressed, [0xD9]);

            return payloadCompressed;
        }


        public async Task SendPostRequestAsync(string url, string jsonStr)
        {

            //jsonStr = "";
            Log.Information("Sending Post Request to " + url);
            Log.Information($"Payload: {jsonStr}");
            byte[] payload = PacketCryptManager.Instance.RequestToBinary(Protocol.Shop_BuyGacha3, jsonStr, );


            File.WriteAllBytes("./mx.dat", payload);
            Log.Information("Writeen All Bytes");

            return;
            //GetCRC(payload, 0, payload.Length, out uint crc);

            ////using var xxhash = XXHash32.Create();
            ////xxhash.ComputeHash(Encoding.UTF8.GetBytes(name));

            //Log.Information("CRC: " + crc);

            //SCHALEPacket packet = new SCHALEPacket()
            //{
            //    CRC = crc,
            //    Protocol = (ushort)Protocol.Academy_GetInfo,
            //    PacketSize = payload.Length,

            //    Payload = payload
            //};

            //using var memoryStream = new MemoryStream();
            //using var binaryWriter = new BinaryWriter(memoryStream);

            //binaryWriter.Write(packet.CRC);
            //binaryWriter.Write(packet.Protocol);
            //binaryWriter.Write(packet.PacketSize);
            //binaryWriter.Write(payload);
            //binaryWriter.BaseStream.Position = 0;


            using var fileStream = new FileStream("./mx.dat", FileMode.Create, FileAccess.Write);
            using var binaryWriterFile = new BinaryWriter(fileStream);

            binaryWriterFile.Write(payload);

            var mxFile = new StreamContent(binaryWriterFile.BaseStream);

            mxFile.Headers.ContentType = MediaTypeHeaderValue.Parse("application/octet-stream");

            // Add the in-memory content as a file with a name
            var boundary = "BestHTTP_HTTPMultiPartForm_3";
            using var content = new MultipartFormDataContent(boundary);

            content.Add(mxFile, "mx", "1");

            content.Headers.ContentType = new MediaTypeHeaderValue("multipart/form-data");
            content.Headers.ContentType.Parameters.Add(new NameValueHeaderValue("boundary", boundary));

            // Set up custom headers to match the request shown
            _httpClient.DefaultRequestHeaders.AcceptEncoding.Add(new StringWithQualityHeaderValue("gzip"));
            _httpClient.DefaultRequestHeaders.Add("Bundle-Version", "li3pmyogha");
            _httpClient.DefaultRequestHeaders.Connection.Add("Keep-Alive");
            _httpClient.DefaultRequestHeaders.Connection.Add("TE");
            _httpClient.DefaultRequestHeaders.Add("Keep-Alive", "timeout=21");
            //_httpClient.DefaultRequestHeaders.Add("TE", "identity");
            _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("BestHTTP/2 v2.4.0");
            

            // Send the POST request
            HttpResponseMessage response = await _httpClient.PostAsync(url, content);

            if (response.IsSuccessStatusCode)
            {
                string responseData = await response.Content.ReadAsStringAsync();
                Log.Information("Success: " + responseData);
            } 
                
            else
            {
                Log.Information($"Error: {response.StatusCode}");
            }

        }
    }

    internal static class PrivateClientServiceExtensions
    {
        public static void AddPrivateClientService(this IServiceCollection services)
        {
            services.AddHostedService<PrivateClientService>();
        }
    }

    public class SCHALEPacket // total 12 bytes header
    {
        public uint CRC { get; set; } // 4 bytes
        public int Protocol { get; set; } // 
        public int PacketSize { get; set; } // 

        public byte[] Payload { get; set; }

    }
}