using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Collections.Generic;
using BookManage.Model;
using BookManage.DAL;

namespace BookManage.BLL
{
    /// <summary>
    /// 圖書的借閱,歸還操作
    /// </summary>
    public class BookBusiness
    {
        public BookBusiness()
        {
            //
            // TODO: Add constructor logic here
            //
        }
        DAL.BookBusiness dal = new BookManage.DAL.BookBusiness();
        /// <summary>
        /// 獲取已經(jīng)借出的圖書
        /// </summary>
        /// <returns></returns>
        public IList<BookLentInfo> GetBookLendList()
        {
            return dal.GetBookLendList();
        }
        /// <summary>
        /// 獲取用戶借入的圖書
        /// </summary>
        /// <param name="userName"></param>
        /// <returns></returns>
        public IList<BookLentInfo> GetBookLendListByUserName(string userName)
        {
            return dal.GetBookLendListByUserName(userName); ;
        }
        /// <summary>
        /// 借書
        /// </summary>
        /// <param name="bookId"></param>
        /// <param name="userName"></param>
        /// <returns></returns>
        public static int LendBook(int bookId, string userName)
        {

            return BookManage.DAL.BookBusiness.LendBook(bookId, userName);
        }
        /// <summary>
        /// 還書
        /// </summary>
        /// <param name="blId"></param>
        /// <returns></returns>
        public int ReturnBook(int blId)
        {
            return dal.ReturnBook(blId);
        }
        /// <summary>
        /// 用戶已借書數(shù)量
        /// </summary>
        /// <param name="userName"></param>
        /// <returns></returns>
        public int LentBookAmount(string userName)
        {
            return dal.BorrowedBookAmount(userName);
        }
        /// <summary>
        /// 用戶是否有到期圖書未還
        /// </summary>
        /// <param name="userName"></param>
        /// <returns></returns>
        public bool HasExpiredBook(string userName)
        {
            return dal.HasExpiredBook(userName);
        }
    }


}