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

namespace NOVA.DevFx.Security.DataHandler
{
    /// <summary>
    /// 角色数据操作类
    /// </summary>
    public static class RoleHandler
    {

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

        /// <summary>
        /// 获取指定用户编码的所有角色列表
        /// </summary>
        /// <returns></returns>
        public static List<Role> GetListByUserID(int userid)
        {
            return GetList(" [id] in (select role_id from s_user_in_role where user_id="+userid.ToString()+")");
        }

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

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



        /// <summary>
        /// 获取指定编号的用户信息
        /// </summary>
        /// <param name="uid"></param>
        /// <returns></returns>
        public static Role GetItem(int rid)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select id,name,description,sort_index ");
            strSql.Append(" FROM s_role ");
            strSql.Append(" WHERE [id]=@id ");
            SqlParameter[] parameters = {
					new SqlParameter("@id", SqlDbType.Int,4)};
            int n = 0;
            parameters[n++].Value = rid;

            SqlDataReader read = SqlHelper.ExecuteReader(strSql.ToString(), parameters);
            Role item = null;

            if (read.Read())
            {
                item = DataReaderToEntites(read);
            }
            if (item != null)
            {
                read.Close();
                return item;
            }
            else
            {
                return null;
            }
        }

        /// <summary>
        /// 获取指定用户名的用户信息
        /// </summary>
        /// <param name="uid"></param>
        /// <returns></returns>
        public static Role GetItemByName(int uname)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select id,name,description,sort_index ");
            strSql.Append(" FROM s_role ");
            strSql.Append(" WHERE [name]=@name ");
            SqlParameter[] parameters = {
					new SqlParameter("@name", SqlDbType.VarChar,50)};
            int n = 0;
            parameters[n++].Value = uname;

            SqlDataReader read = SqlHelper.ExecuteReader(strSql.ToString(), parameters);
            Role item = null;
            if (read.Read())
            {
                item = DataReaderToEntites(read);
            }
            if (item != null)
            {
                read.Close();
                return item;
            }
            else
            {
                return null;
            }
        }


    }
}