Basics setup, going to change how repos work

DBConnection/Extensions/BuilderExtensions.cs

@@ -0,0 +1,40 @@
+using System.Reflection;
+using DBConnection.Repositories.Interfaces;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace DBConnection.Extensions;
+
+public static class BuilderExtensions
+{
+    /// <summary>
+    /// Adds dbcontext and all repositories in repository namespace
+    /// </summary>
+    /// <param name="collection">service collection</param>
+    /// <param name="config">configuration</param>
+    public static void AddDbServices(this IServiceCollection collection, IConfiguration config)
+    {
+        string dbConnectionString = config.GetConnectionString("DefaultConnection");
+        collection.AddDbContext<AppDbContext>(opt =>
+        {
+            opt.UseNpgsql(dbConnectionString);
+        });
+        Type[] repositories = Assembly.GetExecutingAssembly().GetTypes()
+            .Where(t => t.IsClass && !t.IsAbstract && t.Namespace.Contains(nameof(DBConnection.Repositories)) && typeof(IRepository).IsAssignableFrom(t)).ToArray();
+        foreach (var repo in repositories)
+        {
+            var repoInterface = repo.GetInterfaces()
+                .FirstOrDefault(repoInterface => typeof(IRepository).IsAssignableFrom(repoInterface) && repoInterface != typeof(IRepository));
+            if (repoInterface != null)
+            {
+                collection.AddScoped(repoInterface, repo);
+            }
+            else
+            {
+                collection.AddScoped(repo);
+            }
+        }
+        
+    }
+}