feat(wxapi): 新增小程序支付管理服务退款相关接口

src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteShopExtensions.cs

@@ -1510,6 +1510,7 @@ namespace SKIT.FlurlHttpClient.Wechat.Api
         /// <summary>
         /// <para>异步调用 [POST] /shop/funds/submitwithdraw 接口。</para>
         /// <para>REF: https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/business-capabilities/ministore/minishopopencomponent2/API/funds/submitwithdraw.html </para>
+        /// <para>REF: https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/business-capabilities/ministore/wxafunds/API/funds/submitwithdraw.html </para>
         /// </summary>
         /// <param name="client"></param>
         /// <param name="request"></param>
@@ -1530,6 +1531,7 @@ namespace SKIT.FlurlHttpClient.Wechat.Api
         /// <summary>
         /// <para>异步调用 [POST] /shop/funds/scanwithdraw 接口。</para>
         /// <para>REF: https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/business-capabilities/ministore/minishopopencomponent2/API/funds/scanwithdraw.html </para>
+        /// <para>REF: https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/business-capabilities/ministore/wxafunds/API/funds/scanwithdraw.html </para>
         /// </summary>
         /// <param name="client"></param>
         /// <param name="request"></param>
@@ -1550,6 +1552,7 @@ namespace SKIT.FlurlHttpClient.Wechat.Api
         /// <summary>
         /// <para>异步调用 [POST] /shop/funds/getwithdrawdetail 接口。</para>
         /// <para>REF: https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/business-capabilities/ministore/minishopopencomponent2/API/funds/getwithdrawdetail.html </para>
+        /// <para>REF: https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/business-capabilities/ministore/wxafunds/API/funds/getwithdrawdetail.html </para>
         /// </summary>
         /// <param name="client"></param>
         /// <param name="request"></param>
@@ -1930,6 +1933,26 @@ namespace SKIT.FlurlHttpClient.Wechat.Api
 
             return await client.SendRequestWithJsonAsync<Models.ShopPayProfitSharingOrderResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
         }
+
+        /// <summary>
+        /// <para>异步调用 [POST] /shop/pay/refundorder 接口。</para>
+        /// <para>REF: https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/business-capabilities/ministore/wxafunds/API/order/refunds_order.html </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.ShopPayRefundOrderResponse> ExecuteShopPayRefundOrderAsync(this WechatApiClient client, Models.ShopPayRefundOrderRequest 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, "shop", "pay", "refundorder")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendRequestWithJsonAsync<Models.ShopPayRefundOrderResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
         #endregion
     }
 }

src/SKIT.FlurlHttpClient.Wechat.Api/Models/Shop/Pay/ShopPayRefundOrderRequest.cs

@@ -0,0 +1,57 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /shop/pay/refundorder 接口的请求。</para>
+    /// </summary>
+    public class ShopPayRefundOrderRequest : WechatApiRequest, IInferable<ShopPayRefundOrderRequest, ShopPayRefundOrderResponse>
+    {
+        /// <summary>
+        /// 获取或设置微信商户号。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("mchid")]
+        [System.Text.Json.Serialization.JsonPropertyName("mchid")]
+        public string MerchantId { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 获取或设置用户的 OpenId。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("openid")]
+        [System.Text.Json.Serialization.JsonPropertyName("openid")]
+        public string OpenId { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 获取或设置商户订单号。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("trade_no")]
+        [System.Text.Json.Serialization.JsonPropertyName("trade_no")]
+        public string? OutTradeNumber { get; set; }
+
+        /// <summary>
+        /// 获取或设置微信支付交易单号。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("transaction_id")]
+        [System.Text.Json.Serialization.JsonPropertyName("transaction_id")]
+        public string? TransactionId { get; set; }
+
+        /// <summary>
+        /// 获取或设置商户退款单号。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("refund_no")]
+        [System.Text.Json.Serialization.JsonPropertyName("refund_no")]
+        public string OutRefundNumber { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 获取或设置订单总金额（单位：分）。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("total_amount")]
+        [System.Text.Json.Serialization.JsonPropertyName("total_amount")]
+        public int TotalAmount { get; set; }
+
+        /// <summary>
+        /// 获取或设置退款金额（单位：分）。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("refund_amount")]
+        [System.Text.Json.Serialization.JsonPropertyName("refund_amount")]
+        public int RefundAmount { get; set; }
+    }
+}

src/SKIT.FlurlHttpClient.Wechat.Api/Models/Shop/Pay/ShopPayRefundOrderResponse.cs

@@ -0,0 +1,9 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /shop/pay/refundorder 接口的响应。</para>
+    /// </summary>
+    public class ShopPayRefundOrderResponse : WechatApiResponse
+    {
+    }
+}

test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Shop/Pay/ShopPayRefundOrderRequest.json

@@ -0,0 +1,9 @@
+{
+    "openid": "oTVP50O53a7jgmawAmxKukNlq3XI",
+    "mchid": "1230000109",
+    "trade_no": "1217752501201407033233368018",
+    "transaction_id": "4208450740201411110007820472",
+    "refund_no": "1217752501201407033233368018",
+    "total_amount": 100,
+    "refund_amount": 50
+}