#292 Add support for the Manage order lines endpoint

Mollie.Api/Client/Abstract/IOrderClient.cs

@@ -1,6 +1,7 @@
 using System.Threading.Tasks;
 using Mollie.Api.Models.List;
 using Mollie.Api.Models.Order;
+using Mollie.Api.Models.Order.Request;
 using Mollie.Api.Models.Payment.Response;
 using Mollie.Api.Models.Refund;
 using Mollie.Api.Models.Url;
@@ -11,6 +12,7 @@ public interface IOrderClient {
         Task<OrderResponse> GetOrderAsync(string orderId, bool embedPayments = false, bool embedRefunds = false, bool embedShipments = false, bool testmode = false);
         Task<OrderResponse> UpdateOrderAsync(string orderId, OrderUpdateRequest orderUpdateRequest);
         Task<OrderResponse> UpdateOrderLinesAsync(string orderId, string orderLineId, OrderLineUpdateRequest orderLineUpdateRequest);
+        Task<OrderResponse> ManageOrderLinesAsync(string orderId, ManageOrderLinesRequest manageOrderLinesRequest);
         Task CancelOrderAsync(string orderId, bool testmode = false);
         Task<ListResponse<OrderResponse>> GetOrderListAsync(string from = null, int? limit = null, string profileId = null, bool testmode = false);
         Task<ListResponse<OrderResponse>> GetOrderListAsync(UrlObjectLink<ListResponse<OrderResponse>> url);

Mollie.Api/Client/OrderClient.cs

@@ -6,6 +6,7 @@
 using Mollie.Api.Models;
 using Mollie.Api.Models.List;
 using Mollie.Api.Models.Order;
+using Mollie.Api.Models.Order.Request;
 using Mollie.Api.Models.Payment.Response;
 using Mollie.Api.Models.Refund;
 using Mollie.Api.Models.Url;
@@ -32,6 +33,10 @@ public class OrderClient : BaseMollieClient, IOrderClient {
             return await this.PatchAsync<OrderResponse>($"orders/{orderId}/lines/{orderLineId}", orderLineUpdateRequest).ConfigureAwait(false);
         }
 
+        public async Task<OrderResponse> ManageOrderLinesAsync(string orderId, ManageOrderLinesRequest manageOrderLinesRequest) {
+            return await this.PatchAsync<OrderResponse>($"orders/{orderId}/lines", manageOrderLinesRequest).ConfigureAwait(false);
+        }
+
         public async Task CancelOrderAsync(string orderId, bool testmode = false) {
             var data = TestmodeModel.Create(testmode);
             await this.DeleteAsync($"orders/{orderId}", data).ConfigureAwait(false);

Mollie.Api/Models/Order/Request/ManageOrderLinesRequest.cs

@@ -0,0 +1,57 @@
+using System.Collections.Generic;
+
+namespace Mollie.Api.Models.Order.Request {
+    public class ManageOrderLinesRequest {
+        /// <summary>
+        /// List of operations to be processed.
+        /// </summary>
+        public IList<ManageOrderLinesOperation> Operations { get; set; }
+    }
+
+    public static class OrderLineOperation {
+        public const string Add = "add";
+        public const string Update = "update";
+        public const string Cancel = "cancel";
+    }
+
+    public class ManageOrderLinesAddOperationData : OrderLineRequest {
+    }
+
+    public class ManageOrderLinesUpdateOperationData : OrderLineUpdateRequest {
+        public string Id { get; set; } 
+    }
+
+    public class ManagerOrderLinesCancelOperationData : OrderLineDetails {
+    }
+
+    public abstract class ManageOrderLinesOperation {
+        /// <summary>
+        /// Operation type. Either `add`, `update`, or `cancel`.
+        /// </summary>
+        public string Operation { get; protected set; }
+    }
+
+    public class ManageOrderLinesAddOperation : ManageOrderLinesOperation {
+        public ManageOrderLinesAddOperationData Data { get; set; }
+
+        public ManageOrderLinesAddOperation() {
+            this.Operation = OrderLineOperation.Add;
+        }
+    }
+
+    public class ManageOrderLinesUpdateOperation : ManageOrderLinesOperation {
+        public ManageOrderLinesUpdateOperationData Data { get; set; }
+
+        public ManageOrderLinesUpdateOperation() {
+            this.Operation = OrderLineOperation.Update;
+        }
+    }
+
+    public class ManageOrderLinesCancelOperation : ManageOrderLinesOperation {
+        public ManagerOrderLinesCancelOperationData Data { get; set; }
+
+        public ManageOrderLinesCancelOperation() {
+            this.Operation = OrderLineOperation.Cancel;
+        }
+    }
+}

Mollie.Api/Models/Order/Request/OrderLineUpdateRequest.cs

@@ -45,7 +45,7 @@ public class OrderLineUpdateRequest {
         /// Any discounts applied to the order line. For example, if you have a two-for-one sale, you should pass the 
         /// amount discounted as a positive amount.
         /// </summary>
-        public Amount DiscountPrice { get; set; }
+        public Amount DiscountAmount { get; set; }
 
         /// <summary>
         /// The total amount of the line, including VAT and discounts. Adding all totalAmount values together should 

README.md

@@ -106,6 +106,7 @@ In the past, this library used enums that were decorated with the EnumMemberAttr
 - Mollie.Api.Models.Order.OrderLineDetailsType
 - Mollie.Api.Models.Order.OrderLineStatus
 - Mollie.Api.Models.Order.OrderStatus
+- Mollie.Api.Models.Order.OrderLineOperation
 - Mollie.Api.Models.Profile.CategoryCode
 - Mollie.Api.Models.Profile.ProfileStatus
 - Mollie.Api.Models.Refund.RefundStatus