using System;
using DDTek.Oracle;
using NLog;

namespace DataModel.Process
{
    /// <summary>
    /// CMS interface
    /// </summary>
    public partial class CMS
    {
        /// <summary>
        /// Query repository name
        /// </summary>
        private const string RepositoryName = "CMS";

        /// <summary>
        /// Query repository instance
        /// </summary>
        private static readonly QueryRepository queries = new QueryRepository(RepositoryName, Config.CMSQueryRepo);

        /// <summary>
        /// Shared logger instance
        /// </summary>
        private static readonly Logger logger = LogManager.GetCurrentClassLogger();

        /// <summary>
        /// Gets an open connection to the CMS DB
        /// </summary>
        /// <returns>Opened connection to the CMS DB</returns>
        private static OracleConnection GetConnection()
        {
            OracleConnection connection;

            try
            {
                //Create the connection to the database and open it
                connection = new OracleConnection(Config.CMSCS);
                connection.Open();
            }
            catch (Exception error)
            {
                //Log error and forward
                logger.Error("GetConnection: failed to open connection to CMS: {0}.", error.Message);
                throw new Exception("CMS: failed to open connection to CMS database.", error);
            }

            return connection;
        }
    }
}