using System.Data.Common;
using WebLib;

namespace 報到系統
{
    /// <summary>
    /// BWEX 系統設定資料存取類別
    /// </summary>
    public class DAC_BWEX : DAC
    {
        public DAC_BWEX() : base() { }

        public DAC_BWEX(DbConnection conn) : base(conn) { }

        /// <summary>依 KeyName 取得 KeyValue</summary>
        public string GetKeyValue(string keyName)
        {
            DbCommand cmd = NewCommand();
            cmd.CommandText = "select [BSNAM] from [BWEX] where [BSNUM] = @KeyName and [BSITM] = '   1'";
            AddParam(cmd, "KeyName", keyName);
            string result;
            ExecuteScalar(cmd, out result);
            return result;
        }

        /// <summary>更新 KeyValue（若不存在則 INSERT）</summary>
        public void SetKeyValue(string keyName, string keyValue)
        {
            DbCommand cmd = NewCommand();
            cmd.CommandText =
                "if exists (select 1 from [BWEX] where [BSNUM] = @KeyName and [BSITM] = '   1') " +
                "  update [BWEX] set [BSNAM] = @KeyValue where [BSNUM] = @KeyName and [BSITM] = '   1'" +
                "else " +
                "  insert into [BWEX] ([BSNUM], [BSITM], [BSNAM]) values (@KeyName, '   1', @KeyValue)";
            AddParam(cmd, "KeyName", keyName);
            AddParam(cmd, "KeyValue", keyValue);
            ExecuteNonQuery(cmd);
        }
    }
}