Application.cs

using System;
using System.Linq;
using System.Net;
using System.Text.Json;
using SimApi.Communications;
using Newtonsoft.Json;
using SimApi.Helpers;

namespace SimUcApp
{
    public class Application
    {
        private string Server { get; }
        public string AppId { get; }
        private string AppKey { get; }

        public Application(string server, string appId, string appKey)
        {
            Server = server + "/api/application";
            AppId = appId;
            AppKey = appKey;
        }

        private string Query(string uri, string body)
        {
            var wc = new WebClient();
            wc.Headers.Add(HttpRequestHeader.ContentType, "application/json");
            Console.WriteLine($"请求的地址是: {Server + uri}");
            Console.WriteLine($"请求的内容: {body}");
            var resp = wc.UploadString(Server + uri, body);
            Console.WriteLine($"请求的结果: {resp}");
            return resp;
        }

        private string SignRequest<T>(T request)
        {
            (request as SimUcRequest.BaseApiRequest).AppId = AppId;
            (request as SimUcRequest.BaseApiRequest).Time = (int)(DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0)).TotalSeconds;
            var requestJson = JsonConvert.SerializeObject(request);
            var parameters = JsonDocument.Parse(requestJson).RootElement.EnumerateObject();

            var dic = parameters.ToDictionary(x => x.Name, x => x.Value.ToString());
            dic.Remove("Sign");
            var sorted = dic.OrderBy(x => x.Key);
            string signStr = "";
            foreach (var item in sorted)
            {
                signStr += $"{item.Key}={item.Value}&";
            }

            signStr = signStr.TrimEnd('&');
            Console.WriteLine($"签名的字符串: {signStr}");
            var sign = SimApiUtil.Md5(signStr + AppKey);
            Console.WriteLine($"签名: {sign}");
            (request as SimUcRequest.BaseApiRequest).Sign = sign;
            return JsonConvert.SerializeObject(request);
        }

        /// <summary>
        /// 更新应用卡片
        /// </summary>
        /// <param name="userId"></param>
        /// <param name="groupId"></param>
        /// <param name="type"></param>
        /// <param name="data"></param>
        /// <param name="image"></param>
        /// <returns></returns>
        public SimApiBaseResponse UpdateCard(int userId, int groupId, CardDataTypeEnum type, string data, string image = null)
        {
            var request = new SimUcRequest.UpdateCardRequest
            {
                UserId = userId,
                GroupId = groupId,
                Type = type.ToString(),
                Data = data,
                Image = image
            };
            var body = SignRequest(request);
            Console.WriteLine(body);
            var resp = Query("/card", body);
            return JsonConvert.DeserializeObject<SimApiBaseResponse>(resp);
        }


        /// <summary>
        /// 向用户发送信息
        /// </summary>
        /// <param name="userId"></param>
        /// <param name="type"></param>
        /// <param name="text"></param>
        /// <param name="title"></param>
        /// <param name="image"></param>
        /// <returns></returns>
        public SimApiBaseResponse SendMessage(int userId, CardDataTypeEnum type, string text, string title = null, string image = null)
        {
            var request = new SimUcRequest.SendMessageRequest
            {
                UserId = userId,
                Type = type.ToString(),
                Text = text,
                Title = title,
                Image = image
            };
            var body = SignRequest(request);
            var resp = Query("/message", body);
            return JsonConvert.DeserializeObject<SimApiBaseResponse>(resp);
        }

        /// <summary>
        /// 使用Token获取用户信息
        /// </summary>
        /// <param name="token"></param>
        /// <returns></returns>
        public SimUcResponse.GetUserByTokenResponse GetUserByToken(string token)
        {
            var request = new SimUcRequest.GetUserByTokenRequest
            {
                Token = token
            };
            var body = SignRequest(request);
            var resp = Query("/token", body);
            return JsonConvert.DeserializeObject<SimUcResponse.GetUserByTokenResponse>(resp);
        }

        /// <summary>
        /// 发起交易
        /// </summary>
        /// <param name="amount"></param>
        /// <param name="name"></param>
        /// <param name="ext"></param>
        /// <returns></returns>
        public SimApiBaseResponse<string> TradeCreate(int amount, string name, string ext)
        {
            var request = new SimUcRequest.TradeCreateRequest
            {
                Amount = amount,
                Name = name,
                Ext = ext
            };
            var body = SignRequest(request);
            var resp = Query("/trade/create", body);
            return JsonConvert.DeserializeObject<SimApiBaseResponse<string>>(resp);
        }

        /// <summary>
        /// 查询交易
        /// </summary>
        /// <param name="tradeNo"></param>
        /// <returns></returns>
        public SimUcResponse.TradeCheckResponse TradeCheck(string tradeNo)
        {

            var request = new SimUcRequest.TradeCheckRequest
            {
                TradeNo = tradeNo
            };
            var body = SignRequest(request);
            var resp = Query("/trade/result", body);
            return JsonConvert.DeserializeObject<SimUcResponse.TradeCheckResponse>(resp);
        }
    }

}