using System.Linq;
using Dlhis.ScheduledTask.Entities;

namespace Dlhis
{
    public class SqlGeneration
    {
        private static string _insertSql;
        private static string _updateSql;

        static SqlGeneration()
        {
            //""
            var properties = typeof(GainfoSap).GetProperties();

            var insertFields = properties
               .Where(x => !x.IsDefined(typeof(IgnoreColumnAttribute), false))
               .Where(x => !x.IsDefined(typeof(PkColumnAttribute), false))
               .Select(x => x.Name);
            _insertSql = $" insert into gainfo_sap({string.Join(",", insertFields)}) \r\n values \r\n ({string.Join(",", insertFields.Select(x => $"@{x}"))})";

            var updateFields = properties
              .Where(x => !x.IsDefined(typeof(IgnoreColumnAttribute), false))
              .Where(x => !x.IsDefined(typeof(PkColumnAttribute), false))
              .Where(x => !x.IsDefined(typeof(UpdateColumnAttribute), false))
              .Select(x => x.Name);
            _updateSql = $" update gainfo_sap set {string.Join(",", updateFields.Select(x => $"{x}=@{x}"))} \t\n where ename=@ename";
        }

        public static string InsertSql => _insertSql;
        public static string UpdateSql => _updateSql;
    }
}