using System;
using System.Collections.Generic;
using System.Text;
using BookManage.Model;
using BookManage.DAL;
using System.Web.Security;
using System.Web;
namespace BookManage.BLL
{

    public class EMUser
    {
        BookManage.DAL.EMUser dal = new BookManage.DAL.EMUser();
        /// <summary>
        /// 檢驗用戶登陸并返回用戶權限
        /// </summary>
        /// <returns>返回用戶的權限,0為管理員,1為普通用戶,如果用戶登陸失敗則設權限為-1</returns>
        public int Login(string userName, string password)
        {
            password = FormsAuthentication.HashPasswordForStoringInConfigFile(password, "md5");
            return dal.Login(userName, password);
        }

        /// <summary>
        /// 檢查用戶名是否存在
        /// </summary>
        /// <param name="userName">用戶名</param>
        /// <returns></returns>
        public bool UserNameExiste(string userName)
        {
            return dal.UserNameExiste(userName);
        }

        /// <summary>
        /// 添加用戶
        /// </summary>
        /// <param name="userName">用戶名</param>
        /// <param name="password">密碼</param>
        public int AddUser(EMUserProfile profile)
        {
            profile.Password = FormsAuthentication.HashPasswordForStoringInConfigFile(profile.Password, "md5");
            return dal.AddUser(profile);
        }

        /// <summary>
        /// 刪除用戶
        /// </summary>
        /// <param name="userName">用戶名</param>
        public void DeleteUser(string userID)
        {
            dal.DeleteUser(userID);
        }

        /// <summary>
        /// 更新用戶權限
        /// </summary>
        /// <param name="userName">用戶名</param>
        /// <param name="userPower">用戶權限</param>
        public int UpdateUserProfile(EMUserProfile profile)
        {
            if (profile.Password != "******")
                profile.Password = FormsAuthentication.HashPasswordForStoringInConfigFile(profile.Password, "md5");
          
            return dal.UpdateUserProfile(profile);

        }
        /// <summary>
        /// 修改用戶密碼
        /// </summary>
        /// <param name="userName">用戶名</param>
        /// <param name="oldPwd">原密碼</param>
        /// <param name="newPwd">新密碼</param>
        /// <returns></returns>
        public int UpdatePassword(string userName, string oldPwd, string newPwd)
        {
            oldPwd = FormsAuthentication.HashPasswordForStoringInConfigFile(oldPwd, "md5");
            newPwd = FormsAuthentication.HashPasswordForStoringInConfigFile(newPwd, "md5");
            return dal.UpdatePassword(userName, oldPwd, newPwd); 
        }
        /// <summary>
        /// 獲取所有用戶列表
        /// </summary>
        /// <returns>所有用戶列表</returns>
        public IList<EMUserProfile> GetUserList()
        {
            return dal.GetUserList();
        } 
        
        /// <summary>
        /// 根據權限獲取用戶列表
        /// </summary>
        /// <param name="userPower">用戶權限</param>
        /// <returns>用戶列表</returns>
        public IList<EMUserProfile> GetUserListByPower(int userPower)
        {
            if(userPower==-1)
                return dal.GetUserList();
            else
                return dal.GetUserListByPower(userPower);
        }
        /// <summary>
        /// 根據用戶名獲取用戶列表
        /// </summary>
        /// <param name="userName">用戶名</param>
        /// <returns></returns>
        public IList<EMUserProfile> SearchUserListResult(string userName)
        {
            return dal.SearchUserListResult(userName);
        }

        /// <summary>
        /// 根據用戶ID獲取用戶資料
        /// </summary>
        /// <param name="userID">用戶ID</param>
        /// <returns></returns>
        public EMUserProfile GetUserDetail(string userID)
        {
            return dal.GetUserDetail(userID);
        }

    }
}