using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Text;
using Sog;
using LitJson;
using ProtoCSStruct;
using Sog.Crypto;
using Sog.Service;
using System.Text.Json;


namespace HttpProxyPay
{
    public class HuaweiPaySvc
    {
        // paysvr部署在美国, 华为推荐选择德国站点
        private static string _PayCheckUrl 
            = "https://orders-dre.iap.hicloud.com/applications/purchases/tokens/verify";

        private static string _GetTokenUrl
            = "https://oauth-login.cloud.huawei.com/oauth2/v3/token";

        // 游戏产品在SDK平台的应用ID
        private static string ClientId = "105624843";

        // 游戏产品在SDK平台的应用私钥
        private static string ClientSecret = "1913208d8b4d11a0d9c1c3c096318ad84c8a41ef9105313ea5f2ad245ebc5d96";

        // 支付公钥
        private static string PayPublicKey = "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";


        public static void Init(string clientId, string clientSecret, string payCheckUrl, string getTokenUrl)
        {
            if (! string.IsNullOrEmpty(clientId))
            {
                ClientId = clientId;
            }

            if (! string.IsNullOrEmpty(clientSecret))
            {
                ClientSecret = clientSecret;
            }

            if (! string.IsNullOrEmpty(payCheckUrl))
            {
                _PayCheckUrl = payCheckUrl;
            }

            if (! string.IsNullOrEmpty(getTokenUrl))
            {
                _GetTokenUrl = getTokenUrl;
            }

            TraceLog.Trace("HuaweiPaySvc.Init clientId {0} clientSecret {1} payUrl {2} tokenUrl {3}"
                , ClientId, ClientSecret, _PayCheckUrl, _GetTokenUrl);
        }


        public static string GetAppAccessToken()
        {
            var allParams = new Dictionary<string, string>();
            allParams["client_id"] = ClientId;
            allParams["client_secret"] = ClientSecret;
            allParams["grant_type"] = "client_credentials";

            var content = new FormUrlEncodedContent(allParams);
            string ret = HttpUtils.HttpPost(_GetTokenUrl, content, out bool exception);
            if (ret == null)
            {
                TraceLog.Error("HuaweiPaySvc.GetAppAccessToken HttpPost failed");
                return null;
            }

            TraceLog.Trace("HuaweiPaySvc.GetAppAccessToken ret {0}", ret);

            JsonData jsonData = JsonMapper.ToObject(ret);
            JsonData tokenData = jsonData["access_token"];
            if (tokenData == null)
            {
                TraceLog.Error("HuaweiPaySvc.GetAppAccessToken no access_token");
                return null;
            }

            return tokenData.ToString();
        }

        private static void FillPayGoogleSuccRes(ref SSPayGoogleSuccessReq req, ref SSPayGoogleSuccessRes res)
        {
            res.Uid = req.Uid;
            res.PayType = req.PayType;
            res.GmTestPay = req.GmTestPay;
            res.PayParam1 = req.PayParam1;
            res.PayParam2 = req.PayParam2;
            res.ItemID = req.ItemID;
            res.OrderId.SetString(req.OrderId.GetPtr());
            res.OrderId3rd.SetString(req.OrderId3rd.GetPtr());
            res.Currency.SetString(req.Currency.GetPtr());
        }

        // 客户端通知服务器支付成功
        public static void OnCltPayGoogleSuccReq(uint remoteAppID, StructPacket packet)
        {
            ref var req = ref packet.GetMessage<SSPayGoogleSuccessReq>();

            string publicKeyBase64 = HttpProxyPayServerUtils.GetServerConfig().huaweiPayPublicKey;
            if (string.IsNullOrEmpty(publicKeyBase64))
            {
                publicKeyBase64 = PayPublicKey;
            }

            string purchaseData = req.PurchaseData.GetString();
            string signature = req.Signature.GetString();
            
            // 校验签名
            bool ret = HuaweiPaySecurity.VerifyRsaSign(purchaseData, signature, publicKeyBase64, HuaweiPaySignatureType.SHA256WithRSA);
            if (ret == false)
            {
                TraceLog.Error("HuaweiPaySvc.OnCltPayGoogleSuccReq uid {0} sign check failed", req.Uid);
                return;
            }

            string orderId = req.OrderId.GetString();
            if (string.IsNullOrEmpty(orderId))
            {
                TraceLog.Error("HuaweiPaySvc.OnCltPayGoogleSuccReq uid {0} orderId is null", req.Uid);
                return;
            }

            // 分发到线程池到华为服务器校验PayToken
            int idx = (int)(HashHelper.HashStringForIndex(orderId) % HttpProxyPayServerUtils.HttpWorkThreadCount);
            TraceLog.Debug("HuaweiPaySvc.OnCltPayGoogleSuccReq uid {0} distribute to task {1}", req.Uid, idx);
            
            MessageTaskDistributor.Instance.Distribute(remoteAppID, packet, idx);
        }


        public static int HttpPostCheckPayTokenInner(string payToken, string productId, out JsonData payDetail)
        {
            // payToken校验成功时, response中可以获取到华为服务器返回的支付详情
            payDetail = null;

            var svrData = HttpProxyPayServerUtils.GetHttpProxyServerData();
            if (svrData.huaweiAppAccessToken == null)
            {
                svrData.huaweiAppAccessToken = GetAppAccessToken();
            }

            if (svrData.huaweiAppAccessToken == null)
            {
                return -1;
            }

            string oriString = $"APPAT:{svrData.huaweiAppAccessToken}";
            string authString = Convert.ToBase64String(Encoding.UTF8.GetBytes(oriString));

            Dictionary<string, string> httpHeaders = new Dictionary<string, string>();
            httpHeaders.Add("Authorization", $"Basic {authString}");

            try
            {
                Dictionary<string, string> bodyMap = new Dictionary<string, string>();
                bodyMap.Add("purchaseToken", payToken);
                bodyMap.Add("productId", productId);
                var bodyString = JsonSerializer.Serialize(bodyMap);
                var httpContent = new StringContent(bodyString, Encoding.UTF8, "application/json");

                string httpRet = HttpUtils.HttpPost(_PayCheckUrl, httpContent, httpHeaders, 10, out int statusCode);
                TraceLog.Debug("HuaweiPaySvc.HttpPostCheckPayToken HttpPost res status code {0}", statusCode);

                // 没有权限表示token过期, 需要重新申请
                if (statusCode == 401)
                {
                    TraceLog.Error("HuaweiPaySvc.HttpPostCheckPayToken HttpPost res status code {0}", statusCode);
                    return statusCode;
                }

                if (httpRet == null)
                {
                    TraceLog.Error("HuaweiPaySvc.HttpPostCheckPayToken HttpPost return null");
                    return -1;
                }

                JsonData jsonData = JsonMapper.ToObject(httpRet);
                if (! jsonData.ContainsKey("responseCode"))
                {
                    TraceLog.Error("HuaweiPaySvc.HttpPostCheckPayToken no [responseCode]");
                    return -1;
                }

                string codeStr = jsonData["responseCode"].ToString();
                if (! int.TryParse(codeStr, out int resCode))
                {
                    TraceLog.Error("HuaweiPaySvc.HttpPostCheckPayToken invalid responseCode {0}", codeStr);
                    resCode = -1;
                }

                TraceLog.Trace("HuaweiPaySvc.HttpPostCheckPayToken HttpPost responseCode {0}", resCode);

                if (resCode == 0)
                {
                    payDetail = JsonMapper.ToObject(jsonData["purchaseTokenData"].ToString());
                }

                return resCode;
            }
            catch (Exception ex)
            {
                TraceLog.Exception(ex);
            }

            return -1;
        }
    }
}