using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;

namespace foda
{
    public class BasicBLL<T> where T : class, new()
    {
        BaseDAL<T> db = new BaseDAL<T>();
        /// 新增信息
        public bool AddInfo(T md)
        {
            try
            {
                if (db.Add(md) > 0)
                {
                    return true;
                }
                return false;
            }
            catch (Exception ex)
            {
                //LogErrBLL.AddInfo(ex.ToString(), MethodBase.GetCurrentMethod());
                return false;
            }

        }
        /// 修改信息
        public bool UpdateInfo(T md, params string[] proNames)
        {
            try
            {
                //T u = new T() { uId = 1, uLoginName = "asdfasdf" };
                if (db.Modify(md, proNames) > 0)
                {
                    return true;
                }
                return false;
            }
            catch (Exception ex)
            {
                //LogErrBLL.AddInfo(ex.ToString(), MethodBase.GetCurrentMethod());
                return false;
            }

        }
        /// 删除信息
        public bool DelInfo(T md)
        {
            try
            {
                if (db.Del(md) > 0)
                {
                    return true;
                }
                return false;
            }
            catch (Exception ex)
            {
                //LogErrBLL.AddInfo(ex.ToString(), MethodBase.GetCurrentMethod());
                return false;
            }

        }
        public List<T> SearchInfo(int page, int pagesize, out int total)
        {
            total = 0;
            try
            {
                var list = db.GetListBy(LambdaHelper.CreateEqual<T>("IsUseing", 1)).ToList();
                total = list.Count;
                int Skipcount = (page - 1) * pagesize;
                return list.Skip(Skipcount).Take(pagesize).ToList();
            }
            catch (Exception ex)
            {
                total = 0;
                //LogErrBLL.AddInfo(ex.ToString(), MethodBase.GetCurrentMethod());
                return null;
            }

        }
        public List<T> SearchInfoByKey(string keyname, object keyvalue)
        {
            try
            {
                var list = db.GetListBy(LambdaHelper.CreateEqual<T>(keyname, keyvalue)).ToList();
                return list;
            }
            catch (Exception)
            {
                return new List<T>();
                //return null;
            }

        }

        public List<T> SearchInfoContains(string keyname, string keyvalue)
        {
            try
            {
                var list = db.GetListBy(LambdaHelper.GetContains<T>(keyname, keyvalue)).ToList();
                return list;
            }
            catch (Exception)
            {
                return new List<T>();
                //return null;
            }

        }



        public List<T> SearchInfoAll(int page, int pagesize, out int total)
        {
            total = 0;
            try
            {
                var list = db.GetListBy(LambdaHelper.True<T>()).ToList();
                total = list.Count;
                int Skipcount = (page - 1) * pagesize;
                return list.Skip(Skipcount).Take(pagesize).ToList();
            }
            catch (Exception ex)
            {
                total = 0;
                //LogErrBLL.AddInfo(ex.ToString(), MethodBase.GetCurrentMethod());
                return null;
            }

        }
        public T SearchInfoByID(string ID)
        {
            try
            {
                var list = db.Find(ID);
                return list;
            }
            catch (Exception ex)
            {
                return null;
            }

        }
        public List<T> SearchAllInfo()
        {
            try
            {
                return db.GetListBy(LambdaHelper.True<T>()).ToList();
            }
            catch (Exception ex)
            {
                //LogErrBLL.AddInfo(ex.ToString(), MethodBase.GetCurrentMethod());
                return null;
            }

        }
        public List<T> SearchInfoByTime(string cname, DateTime stime, DateTime etime)
        {
            try
            {
                IQueryable<T> list = db.GetListBy(LambdaHelper.CreateCompareToLater<T>(cname, stime)).AsQueryable();
                list = list.Where(LambdaHelper.CreateCompareToEarlier<T>(cname, etime));
                return list.ToList();
            }
            catch (Exception)
            {
                return new List<T>();
                //return null;
            }

        }

    }
}