Agregar archivos de proyecto.

MieSystem/Data/Repositories/DatabaseConnectionFactory.cs

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+using Dapper;
+using MieSystem.Data.Interfaces;
+using Npgsql;
+using System.Data;
+
+namespace MieSystem.Data.Repositories
+{
+    public class DatabaseConnectionFactory : IDatabaseConnectionFactory
+    {
+        private readonly IConfiguration _configuration;
+        private readonly string? _connectionString;
+
+        public DatabaseConnectionFactory(IConfiguration configuration)
+        {
+            _configuration = configuration;
+            _connectionString = _configuration.GetConnectionString("PostgreSQL");
+
+            // Mapear tipos de PostgreSQL a .NET
+            Dapper.DefaultTypeMap.MatchNamesWithUnderscores = true;
+            NpgsqlConnection.GlobalTypeMapper.UseJsonNet();
+
+        }
+
+        public IDbConnection CreateConnection()
+        {
+            var connection = new NpgsqlConnection(_connectionString);
+
+            // Configuración adicional
+            connection.Open();
+            connection.ReloadTypes(); // Para tipos custom de PostgreSQL
+
+            return connection;
+        }
+
+        public async Task<IDbConnection> CreateConnectionAsync()
+        {
+            var connection = new NpgsqlConnection(_connectionString);
+
+            await connection.OpenAsync();
+            await connection.ReloadTypesAsync();
+
+            return connection;
+        }
+    }
+}