feat(work): 新增企业邮箱新邮件提醒相关接口

src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinExmailExtensions.cs

@@ -285,5 +285,27 @@ namespace SKIT.FlurlHttpClient.Wechat.Work
             return await client.SendRequestWithJsonAsync<Models.CgibinExmailUserOptionUpdateResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
         }
         #endregion
+
+        #region Mail
+        /// <summary>
+        /// <para>异步调用 [POST] /cgi-bin/exmail/mail/get_newcount 接口。</para>
+        /// <para>REF: https://developer.work.weixin.qq.com/document/path/95514 </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.CgibinExmailMailGetNewCountResponse> ExecuteCgibinExmailMailGetNewCountAsync(this WechatWorkClient client, Models.CgibinExmailMailGetNewCountRequest request, CancellationToken cancellationToken = default)
+        {
+            if (client is null) throw new ArgumentNullException(nameof(client));
+            if (request is null) throw new ArgumentNullException(nameof(request));
+
+            IFlurlRequest flurlReq = client
+                .CreateRequest(request, HttpMethod.Post, "cgi-bin", "exmail", "mail", "get_newcount")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendRequestWithJsonAsync<Models.CgibinExmailMailGetNewCountResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
+        #endregion
     }
 }

src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinExmail/Mail/CgibinExmailMailGetNewCountRequest.cs

@@ -0,0 +1,15 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /cgi-bin/exmail/mail/get_newcount 接口的请求。</para>
+    /// </summary>
+    public class CgibinExmailMailGetNewCountRequest : WechatWorkRequest
+    {
+        /// <summary>
+        /// 获取或设置成员账号。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("userid")]
+        [System.Text.Json.Serialization.JsonPropertyName("userid")]
+        public string UserId { get; set; } = string.Empty;
+    }
+}

src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinExmail/Mail/CgibinExmailMailGetNewCountResponse.cs

@@ -0,0 +1,15 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /cgi-bin/exmail/mail/get_newcount 接口的响应。</para>
+    /// </summary>
+    public class CgibinExmailMailGetNewCountResponse : WechatWorkResponse
+    {
+        /// <summary>
+        /// 获取或设置新邮件数。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("count")]
+        [System.Text.Json.Serialization.JsonPropertyName("count")]
+        public int NewCount { get; set; }
+    }
+}

test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinExmail/Mail/CgibinExmailMailGetNewCountRequest.json

@@ -0,0 +1,3 @@
+{
+    "userid": "member"
+}

test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinExmail/Mail/CgibinExmailMailGetNewCountResponse.json

@@ -0,0 +1,5 @@
+{
+    "errcode": 0,
+    "errmsg": "ok",
+    "count": 1
+}