using System;
using System.Collections.Generic;

using System.Data;


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

namespace MyShop.BLL
{
    public class GuestBook
    {
        private IGuestBook dal = DataAccess.CreateGuestBook();

        public GuestBook() { }

        #region IGuestBook

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

        #endregion

        #region common

        public int Add(GuestBookInfo 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 Delete(int GuestId)
        {
            if (string.IsNullOrEmpty(GuestId.ToString()))
                return 0;
            string filer;
            filer = " GuestId =" + GuestId;
            return Delete(filer);
        }
        public int Update(GuestBookInfo model)
        {

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

        public GuestBookInfo GetModel(int GuestId)
        {
            DataSet dataset = new DataSet();
            dataset = GetDataSet(" GuestId=" + GuestId);
            if (dataset.Tables[0].Rows.Count > 0)
                return GetModel(dataset.Tables[0].Rows[0]);
            return null;

        }

        #endregion



        /// <summary>
        /// 得到通过审核的列表
        /// </summary>
        /// <returns></returns>
        public DataSet GetPassedList()
        {
            return dal.GetPassedList();
        }


        #region 后台管理

        public DataSet GetDataSetOrderById()
        {
            return GetDataSet(" [GuestId] > 0 Order by  [GuestId] Desc ");
        }

        /// <summary>
        /// 判断该留言是不是审核通过
        /// </summary>
        /// <param name="guestId"></param>
        /// <returns>无该文章时返回false</returns>
        public bool Pass(int guestId)
        {
            GuestBookInfo model = new GuestBookInfo();
            model = GetModel(guestId);
            if (model == null)
                return false;

            if (model.IsPassed == 1)
                return true;
            else
                return false;
        }

        /// <summary>
        /// 取消或设置该文章审核状态
        /// </summary>
        /// <param name="guestId"></param>
        /// <param name="action">true 为审核通过   false为审核未通过</param>
        /// <returns></returns>
        public int Pass(int guestId, bool action)
        {
            GuestBookInfo model = new GuestBookInfo();
            model = GetModel(guestId);
            if (model == null)
                return 0;

            if (action)
            {
                model.IsPassed = 1;
            }
            else
            {
                model.IsPassed = 0;
            }
            return Update(model);
        }



        /// <summary>
        /// 快速搜索
        /// </summary>
        /// <param name="searchType"></param>
        /// <returns></returns>
        public DataSet QuickSearch(int searchType)
        {
            return dal.QuickSearch(searchType);
        }

        /// <summary>
        /// 高级查询
        /// </summary>
        /// <param name="field"></param>
        /// <param name="keywords"></param>
        /// <returns></returns>
        public DataSet KeywordsSearch(string field, string keywords)
        {
            field = Utils.ReplaceBadSQL(field.Trim().ToLower());
            keywords = Utils.ReplaceBadSQL(keywords.ToLower().Trim());
            if (string.IsNullOrEmpty(field) || string.IsNullOrEmpty(keywords))
                return null;
            return dal.KeywordsSearch(field, keywords);
        }

        #endregion
    }
}