using System;
using System.Collections.Generic;
using System.Data;


using MyShop.DALFactory;
using MyShop.IDAL;
using MyShop.Model;

namespace MyShop.BLL
{
    public class Config
    {
        private IConfig dal = DataAccess.CreateConfig(); 

        private ConfigInfo configInfo = new ConfigInfo();
        private string tableName = "Ljh_Config";

        public Config()
        {

            if (!string.IsNullOrEmpty(configInfo.TablePrefix.Trim()))
                tableName = configInfo.TablePrefix + "Config";

        }

        #region IConfig

        public int Add(ConfigInfo model)
        {
            if (model == null)
            {
                return 0;
            }
            return dal.Add(model);
        }

        public int Delete(string filter)
        {
            if (string.IsNullOrEmpty(filter))
                return 0;
            return dal.Delete(filter);
        }

        public bool Exist(string filter)
        {
            filter = filter.Trim();
            if (string.IsNullOrEmpty(filter))
                return false;
            return dal.Exist(filter);
        }
        public DataSet GetDataSet()
        {
            return dal.GetDataSet();
        }

        public DataSet GetDataSet(string filter)
        {
            filter = filter.Trim();
            if (string.IsNullOrEmpty(filter))
                return null;
            return dal.GetDataSet(filter);
        }

        public ConfigInfo GetModel(DataRow dr)
        {
            if (dr == null)
                return null;
            return dal.GetModel(dr);
        }

        private DataSet Query(string sql)
        {
            sql = sql.Trim();
            if (string.IsNullOrEmpty(sql))
                return null;
            return dal.Query(sql);
        }

        public int Update(ConfigInfo model, string filter)
        {
            if (model == null)
                return 0;
            filter = filter.Trim();
            return dal.Update(model, filter);
        }

        #endregion

        #region common

        public int Add(ConfigInfo model, out string msg)
        {
            msg = "";
            if (model == null)
            {
                msg = msg + "<li>数据不能为空</li>";
                return 0;
            }

            bool isErr = false;


            if (isErr)
                return 0;

            int count = 0;
            count = Add(model);
            if (count == 0)
                msg = "<li>系统发生错误,请重新添加!</li>";
            if (count == 1)
                msg = "<li>添加成功!</li>";
            return count;
        }

        public int Update(ConfigInfo model)
        {

            if (model == null)
            {
                return 0;
            }
            string filter;
            filter = "";
            return Update(model, filter);
        }

        public ConfigInfo GetModel()
        {
            DataSet dataset = new DataSet();
            dataset = GetDataSet();
            if (dataset != null)
                return GetModel(dataset.Tables[0].Rows[0]);
            return null;

        }

        #endregion


 
    }
}