Update models Messages

Govor.Data/Configurations/MessageViewConfiguration.cs

@@ -0,0 +1,18 @@
+using Govor.Core.Models;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace Govor.Data.Configurations;
+
+public class MessageViewConfiguration : IEntityTypeConfiguration<MessageView>
+{
+    public void Configure(EntityTypeBuilder<MessageView> builder)
+    {
+        builder.HasKey(mv => mv.Id);
+
+        builder.HasIndex(mv => new { mv.MessageId, mv.UserId }).IsUnique();
+
+        builder.Property(mv => mv.ViewedAt)
+            .IsRequired();
+    }
+}