bitpay invoice api

src/Core/Models/Api/Request/BitPayInvoiceRequestModel.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+
+namespace Bit.Core.Models.Api
+{
+    public class BitPayInvoiceRequestModel : IValidatableObject
+    {
+        public Guid? UserId { get; set; }
+        public Guid? OrganizationId { get; set; }
+        public bool Credit { get; set; }
+        [Required]
+        public decimal? Amount { get; set; }
+        public string ReturnUrl { get; set; }
+        public string Name { get; set; }
+        public string Email { get; set; }
+
+        public NBitpayClient.Invoice ToBitpayClientInvoice()
+        {
+            var inv = new NBitpayClient.Invoice
+            {
+                Price = Amount.Value,
+                Currency = "USD",
+                RedirectURL = ReturnUrl,
+                BuyerEmail = Email,
+                Buyer = new NBitpayClient.Buyer
+                {
+                    email = Email,
+                    Name = Name
+                }
+            };
+
+            var posData = string.Empty;
+            if(UserId.HasValue)
+            {
+                posData = "userId:" + UserId.Value;
+            }
+            else if(OrganizationId.HasValue)
+            {
+                posData = "organizationId:" + OrganizationId.Value;
+            }
+
+            if(Credit)
+            {
+                posData += ",accountCredit:1";
+                inv.ItemDesc = "Bitwarden Account Credit";
+            }
+            else
+            {
+                inv.ItemDesc = "Bitwarden";
+            }
+
+            inv.PosData = posData;
+            return inv;
+        }
+
+        public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
+        {
+            if(!UserId.HasValue && !OrganizationId.HasValue)
+            {
+                yield return new ValidationResult("User or Ooganization is required.");
+            }
+        }
+    }
+}