Initial commit.

Wino.Core/Extensions/MimeExtensions.cs

@@ -0,0 +1,52 @@
+using System.IO;
+using System.Text;
+using Google.Apis.Gmail.v1.Data;
+using MimeKit;
+using MimeKit.IO;
+using MimeKit.IO.Filters;
+using Wino.Core.Domain;
+using Wino.Core.Domain.Entities;
+
+namespace Wino.Core.Extensions
+{
+    public static class MimeExtensions
+    {
+        /// <summary>
+        /// Returns MimeKit.MimeMessage instance for this GMail Message's Raw content.
+        /// </summary>
+        /// <param name="message">GMail message.</param>
+        public static MimeMessage GetGmailMimeMessage(this Message message)
+        {
+            if (message == null || message.Raw == null)
+                return null;
+
+            // Gmail raw is not base64 but base64Safe. We need to remove this HTML things.
+            var base64Encoded = message.Raw.Replace(",", "=").Replace("-", "+").Replace("_", "/");
+
+            byte[] bytes = Encoding.ASCII.GetBytes(base64Encoded);
+
+            var stream = new MemoryStream(bytes);
+
+            // This method will dispose outer stream.
+
+            using (stream)
+            {
+                using var filtered = new FilteredStream(stream);
+                filtered.Add(DecoderFilter.Create(ContentEncoding.Base64));
+
+                return MimeMessage.Load(filtered);
+            }
+        }
+
+        public static AddressInformation ToAddressInformation(this MailboxAddress address)
+        {
+            if (address == null)
+                return new AddressInformation() { Name = Translator.UnknownSender, Address = Translator.UnknownAddress };
+
+            if (string.IsNullOrEmpty(address.Name))
+                address.Name = address.Address;
+
+            return new AddressInformation() { Name = address.Name, Address = address.Address };
+        }
+    }
+}