using System;

namespace Common.Library.SQL.Base
{
    public abstract class SQLBase : IDisposable
    {
        protected DBConnectionInformation DBConnectionInfo;

        public enum DBType
        {
            MSSQL,
            MYSQL
        }
        public struct DBConnectionInformation
        {
            public string DBHost {get;set;}
            public string DBName {get;set;}
            public string DBUserName {get;set;}
            public string DBPassword {get;set;}
            public DBType DBType {get;set;}

            public string GetConnectionString()
            {
                string rv = string.Empty;

                switch(DBType)
                {
                    case DBType.MSSQL:
                        break;
                    case DBType.MYSQL:
                        rv = string.Format("Server={0};Database={1};Uid={2};Pwd={3}", DBHost, DBName, DBUserName, DBPassword);
                        break;
                }

                return rv;
            }
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        protected virtual void Dispose(bool disposing)
        {
            if (disposing)
            {
                // free managed resources
            }
            // free native resources if there are any.
        }

        protected abstract void InitConnection();
        protected abstract void DisposeConnection();

        protected abstract int GetOrdinal(string columnName);
        protected abstract int? GetInt(int columnID);
        protected abstract int? GetInt(string columnName);
        protected abstract byte? GetByte(int columnID);
        protected abstract byte? GetByte(string columnName);
        protected abstract byte[] GetBytes(int columnID);
        protected abstract byte[] GetBytes(string columnName);
        protected abstract decimal? GetDecimal(int columnID);
        protected abstract decimal? GetDecimal(string columnName);
        protected abstract long? GetLong(int columnID);
        protected abstract long? GetLong(string columnName);
        protected abstract short? GetShort(int columnID);
        protected abstract short? GetShort(string columnName);
        protected abstract string GetString(int columnID);
        protected abstract string GetString(string columnName);
        protected abstract bool? GetBool(int columnID);
        protected abstract bool? GetBool(string columnName);
        protected abstract DateTime? GetDateTime(int columnID);
        protected abstract DateTime? GetDateTime(string columnName);

    }
}