using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.SqlClient;
using System.Runtime.InteropServices;

namespace DatabaseConnection
{
    //[ComVisible(true)]
    //[Guid("8bebe939-7a73-4ba3-877b-50cd2a7e4586")]
    //[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
    public interface bnhtradeDbInterface
    {
        SqlConnection Connection(string DataSource, string InitialCatalog, string UserId, string Password, bool PersistSecurityInfo = true, bool MultipleActiveResultSets = true);
    }

    //[ComVisible(true)]
    //[Guid("b0e29c9e-d353-4d3a-83dd-5278b520af54")]
    //[ClassInterface(ClassInterfaceType.None)]
    ////[ProgId("MyNameSpace.Criteria")]
    public class bnhtradeDb : bnhtradeDbInterface
    {
        public SqlConnection Connection(string DataSource, string InitialCatalog, string UserId, string Password, bool PersistSecurityInfo = true, bool MultipleActiveResultSets = true)
        {
            if (InitialCatalog == "" || DataSource == "" || UserId == "" || Password == "")
            {
                throw new Exception("Insuficent info supplied for sql connection string");
            }
            string connString =
                "Data Source=" + DataSource + ";Initial Catalog=" + InitialCatalog + ";Persist Security Info=" + PersistSecurityInfo.ToString() + ";" +
                "User ID=" + UserId + ";Password=" + Password + ";MultipleActiveResultSets=" + MultipleActiveResultSets.ToString() + "";

            SqlConnection sqlConn = new SqlConnection(connString);

            return sqlConn;
        }
    }
}