Download and decrypt attachments

It's kind of ugly right now.

Author: golf1052

Signal-Windows.Lib/IncomingMessages.cs

@@ -440,10 +440,15 @@ private void HandleSignalMessage(SignalServiceEnvelope envelope, SignalServiceCo
                         ContentType = "",
                         Key = pointer.Key,
                         Relay = pointer.Relay,
-                        StorageId = pointer.Id
+                        StorageId = pointer.Id,
+                        Size = (long)pointer.Size,
+                        Digest = pointer.Digest
                     };
                     attachments.Add(sa);
                 }
+
+                // Make sure to update attachments count
+                message.AttachmentsCount = (uint)attachments.Count;
             }
             SignalLibHandle.Instance.SaveAndDispatchSignalMessage(message, conversation);
         }

Signal-Windows.Lib/LibUtils.cs

@@ -1,13 +1,17 @@
-using libsignalservice;
+using libsignalservice;
 using libsignalservice.push;
 using Microsoft.Extensions.Logging;
+using Microsoft.Toolkit.Uwp.Notifications;
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
+using Windows.Networking.BackgroundTransfer;
+using Windows.Storage;
 using Windows.UI.Core;
+using Windows.UI.Notifications;
 
 namespace Signal_Windows.Lib
 {
@@ -148,5 +152,27 @@ public static EventWaitHandle OpenResetEventUnset()
             Logger.LogTrace("OpenResetEventUnset()");
             return new EventWaitHandle(false, EventResetMode.ManualReset, GlobalEventWaitHandleName, out bool createdNew);
         }
+
+        public static ToastNotification CreateToastNotification(string text)
+        {
+            ToastContent toastContent = new ToastContent()
+            {
+                Visual = new ToastVisual()
+                {
+                    BindingGeneric = new ToastBindingGeneric()
+                    {
+                        Children =
+                        {
+                            new AdaptiveText()
+                            {
+                                Text = text,
+                                HintWrap = true
+                            }
+                        }
+                    }
+                }
+            };
+            return new ToastNotification(toastContent.GetXml());
+        }
     }
 }

Signal-Windows.Lib/Migrations/SignalDB/20180203062229_m4.Designer.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace Signal_Windows.Migrations
+{
+    public partial class m4 : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<byte[]>(
+                name: "Digest",
+                table: "Attachments",
+                nullable: true);
+
+            migrationBuilder.AddColumn<long>(
+                name: "Size",
+                table: "Attachments",
+                nullable: false,
+                defaultValue: 0L);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "Digest",
+                table: "Attachments");
+
+            migrationBuilder.DropColumn(
+                name: "Size",
+                table: "Attachments");
+        }
+    }
+}

Signal-Windows.Lib/Migrations/SignalDB/20180203062229_m4.cs

@@ -14,7 +14,7 @@ partial class SignalDBContextModelSnapshot : ModelSnapshot
         protected override void BuildModel(ModelBuilder modelBuilder)
         {
             modelBuilder
-                .HasAnnotation("ProductVersion", "1.1.2");
+                .HasAnnotation("ProductVersion", "1.1.4");
 
             modelBuilder.Entity("Signal_Windows.Models.GroupMembership", b =>
                 {
@@ -41,6 +41,8 @@ protected override void BuildModel(ModelBuilder modelBuilder)
 
                     b.Property<string>("ContentType");
 
+                    b.Property<byte[]>("Digest");
+
                     b.Property<string>("FileName");
 
                     b.Property<byte[]>("Key");
@@ -51,6 +53,8 @@ protected override void BuildModel(ModelBuilder modelBuilder)
 
                     b.Property<string>("SentFileName");
 
+                    b.Property<long>("Size");
+
                     b.Property<int>("Status");
 
                     b.Property<ulong>("StorageId");