using System;
using System.Collections.Generic;
using System.Text;
using NOVA.DevFx.Security.Model;
using System.Data.SqlClient;
using NOVA.DevFx.Data.Utils;
using System.Data;

namespace NOVA.DevFx.Security.DataHandler
{
    /// <summary>
    /// 角色权限关联数据访问类
    /// </summary>
    public static class UserRoleHandler
    {

        /// <summary>
        /// 将数据转换成实体类
        /// </summary>
        public static User_In_Role DataReaderToEntites(IDataReader dr)
        {
            User_In_Role model = new User_In_Role();
            if (dr["id"].ToString() != "")
            {
                model.id = int.Parse(dr["id"].ToString());
            }
            if (dr["user_id"].ToString() != "")
            {
                model.user_id = int.Parse(dr["user_id"].ToString());
            }
            if (dr["role_id"].ToString() != "")
            {
                model.role_id = int.Parse(dr["role_id"].ToString());
            }
            return model;
        }

        /// <summary>
        /// 获得数据列表
        /// </summary>
        public static List<User_In_Role> GetList(string strWhere)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select id,user_id,role_id ");
            strSql.Append(" FROM s_user_in_role ");
            if (strWhere.Trim() != "")
            {
                strSql.Append(" where " + strWhere);
            }
            SqlDataReader read = SqlHelper.ExecuteReader(strSql.ToString());

            List<User_In_Role> m_lst = new List<User_In_Role>();
            while (read.Read())
            {
                User_In_Role item = DataReaderToEntites(read);
                if (item != null)
                {
                    m_lst.Add(item);
                }
            }
            read.Close();
            return m_lst;
        }

        /// <summary>
        /// 根据角色编号获取所有用户列表
        /// </summary>
        /// <returns></returns>
        public static List<User_In_Role> GetUserListByRoleID(int roleid)
        {
            return GetList(" (role_id=" + roleid.ToString() + ")");
        }

        /// <summary>
        /// 根据用户编号获取所有角色列表
        /// </summary>
        /// <returns></returns>
        public static List<User_In_Role> GetRoleListByUserID(int userid)
        {
            return GetList(" (user_id=" + userid.ToString() + ")");
        }

    }
}