Restructure project

Repository/Repository.Core/Sql/DefaultSqlConnectionFactory.cs

@@ -0,0 +1,20 @@
+using Microsoft.Data.SqlClient;
+using Microsoft.Extensions.Configuration;
+
+
+namespace DataAccessLayer.Sql
+{
+    public class DefaultSqlConnectionFactory(IConfiguration configuration) : ISqlConnectionFactory
+    {
+        private readonly string _connectionString = Environment.GetEnvironmentVariable("DB_CONNECTION_STRING")
+                                                    ?? configuration.GetConnectionString("Default")
+                                                    ?? throw new InvalidOperationException(
+                                                        "Database connection string not configured. Set DB_CONNECTION_STRING env var or ConnectionStrings:Default."
+                                                    );
+
+        public SqlConnection CreateConnection()
+        {
+            return new SqlConnection(_connectionString);
+        }
+    }
+}

Repository/Repository.Core/Sql/ISqlConnectionFactory.cs

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+using Microsoft.Data.SqlClient;
+
+namespace DataAccessLayer.Sql
+{
+    public interface ISqlConnectionFactory
+    {
+        SqlConnection CreateConnection();
+    }
+}