back photo + event tags and persons

back/ServicesExtensions/DatabaseContexts.cs

@@ -0,0 +1,37 @@
+using back.context;
+using back.Options;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Options;
+
+namespace back.ServicesExtensions;
+
+public static partial class ServicesExtensions
+{
+    private static IServiceCollection AddDatabaseContexts(this IServiceCollection services)
+    {
+        services
+            .AddContext<EventContext>()
+            .AddContext<GalleryContext>()
+            .AddContext<PersonContext>()
+            .AddContext<PhotoContext>()
+            .AddContext<TagContext>()
+            .AddContext<UserContext>()
+        ;
+
+        return services;
+    }
+    private static IServiceCollection AddContext<T>(this IServiceCollection services)
+        where T : DbContext
+    {
+        var config = services
+            .BuildServiceProvider()
+            .GetRequiredService<IOptionsSnapshot<DatabaseConfig>>()
+            .Get(DatabaseConfig.DataStorage);
+
+        services.AddDbContext<T>(options =>
+        {
+            options.UseDatabaseConfig(config);
+        });
+        return services;
+    }
+}