Some code for adding vehicles to DB

AutoCat/ViewModels/HistoryViewModel.cs

@@ -1,12 +1,24 @@
 using System.Threading.Tasks;
 using AutoCatCore.Model;
+using AutoCatCore.Services.Storage;
 
 namespace AutoCat.ViewModels;
 
 public class HistoryViewModel: ViewModelBase
 {
+    #region Dependencies
+
+    private readonly IStorageService _storageService;
+
+    #endregion
+
+    public HistoryViewModel(IStorageService storageService)
+    {
+        _storageService = storageService;
+    }
+    
     public async Task AddVehicle(Vehicle vehicle)
     {
-        
+        await _storageService.AddVehicle(vehicle);
     }
 }

AutoCatCore/Model/AutoCatDbContext.cs

@@ -6,9 +6,18 @@ namespace AutoCatCore.Model
 	{
 		public DbSet<User> Users { get; private set; }
 
+		public DbSet<Vehicle> Vehicles { get; private set; }
+
 		protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
 		{
 			optionsBuilder.UseSqlite("filename=autocat.db");
 		}
+
+		protected override void OnModelCreating(ModelBuilder modelBuilder)
+		{
+			modelBuilder.Entity<Vehicle>().HasOne(v => v.Brand);
+			
+			modelBuilder.Entity<VehicleBrand>().HasNoKey().ToView("VehicleBrandView");
+		}
 	}
 }

AutoCatCore/Model/Osago.cs

@@ -1,9 +1,12 @@
-namespace AutoCatCore.Model
+using System.ComponentModel.DataAnnotations;
+
+namespace AutoCatCore.Model
 {
 	public class Osago
 	{
-		public double? Date { get; set; }
+		[Key]
 		public string? Number { get; set; }
+		public double? Date { get; set; }
 		public string? Vin { get; set; }
 		public string? PlateNumber { get; set; }
 		public string? Name { get; set; }

AutoCatCore/Services/Storage/IStorageService.cs

@@ -9,4 +9,6 @@ public interface IStorageService
     public string? AuthToken { get; }
 
     public Task SetUser(User user);
+
+    public Task AddVehicle(Vehicle vehicle);
 }

AutoCatCore/Services/Storage/StorageService.cs

@@ -20,6 +20,12 @@ public class StorageService: IStorageService
 
     public string? AuthToken => _dbContext.Users.Any() ? _dbContext.Users.First().Token : null;
 
+    public StorageService()
+    {
+        _dbContext = new AutoCatDbContext();
+        _dbContext.Database.EnsureCreated();
+    }
+    
     public async Task SetUser(User user)
     {
         await _dbContext.Users.ExecuteDeleteAsync();
@@ -27,9 +33,9 @@ public class StorageService: IStorageService
         await _dbContext.SaveChangesAsync();
     }
 
-    public StorageService()
+    public async Task AddVehicle(Vehicle vehicle)
     {
-        _dbContext = new AutoCatDbContext();
+        await _dbContext.Vehicles.AddAsync(vehicle);
-        _dbContext.Database.EnsureCreated();
+        await _dbContext.SaveChangesAsync();
     }
 }