move ReceiverCreateDto to commands

EnvelopeGenerator.Application/Receivers/Commands/ReceiverCreateDto.cs

@@ -0,0 +1,53 @@
+using Microsoft.AspNetCore.Mvc;
+using System.ComponentModel.DataAnnotations;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace EnvelopeGenerator.Application.Receivers.Commands;
+
+/// <summary>
+/// 
+/// </summary>
+[ApiExplorerSettings(IgnoreApi = true)]
+public record ReceiverCreateDto
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    public ReceiverCreateDto()
+    {
+        _sha256HexOfMail = new(() =>
+        {
+            var bytes_arr = Encoding.UTF8.GetBytes(EmailAddress!.ToUpper());
+            var hash_arr = SHA256.HashData(bytes_arr);
+            var hexa_str = BitConverter.ToString(hash_arr);
+            return hexa_str.Replace("-", string.Empty);
+        });
+    }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    [EmailAddress]
+    public required string EmailAddress { get; init; }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    public string? TotpSecretkey { get; init; }
+
+    /// <summary>
+    /// var bytes_arr = Encoding.UTF8.GetBytes(EmailAddress.ToUpper());<br/>
+    /// var hash_arr = SHA256.HashData(bytes_arr);
+    /// var hexa_str = BitConverter.ToString(hash_arr);
+    /// return hexa_str.Replace("-", string.Empty);
+    /// </summary>
+    public string Signature => _sha256HexOfMail.Value;
+
+    private readonly Lazy<string> _sha256HexOfMail;
+
+    /// <summary>
+    /// Default value is DateTime.Now
+    /// </summary>
+    public DateTime AddedWhen { get; } = DateTime.Now;
+};