using System;
using System.Data;
using System.Data.SqlClient;
using System.Collections;
using System.Collections.Generic;
using DSWeb.DataAccess;
using DSWeb.Models;

namespace DSWeb.EntityDA
{
    public class RoleDA
    {
        private const string PARM_MODULE_GID = "@gid";
        private const string PARM_USER_GID = "@userid";
        private const string PARM_ROLE_NAME = "@name";
        private const string PARM_ROLE_DESCRIPTION = "@description";
        private const string PARM_ROLE_CREATEUSER = "@createuser";
        private const string PARM_ROLE_STATE = "@state";
        private const string PARM_ROLE_SORT = "@sort";
        private const string PARM_ROLE_MODIFIEDUSER = "@modifieduser";

        private const string SQL_SELECT_ROLE = " SELECT GID,NAME,DESCRIPTION,CREATEUSER,CREATETIME,MODIFIEDUSER,MODIFIEDTIME,STATE,SORT FROM role WHERE GID = @gid ";
        private const string SQL_SELECT_ROLE_ALL = " SELECT GID,NAME,DESCRIPTION,CREATEUSER,CREATETIME,MODIFIEDUSER,MODIFIEDTIME,STATE,SORT FROM role ";

        private const string SQL_INSERT_ROLE = " INSERT INTO role (GID,NAME,DESCRIPTION,CREATEUSER,STATE,SORT) VALUES(@gid,@name,@description,@createuser,@state,@sort) ";
        private const string SQL_UPDATE_ROLE = " UPDATE role SET NAME = @name,DESCRIPTION = @description,MODIFIEDUSER = @modifieduser, "//MODIFIEDTIME = (GETDATE()),
                                             + " STATE = @state,SORT = @sort WHERE GID = @gid ";

        private const string SQL_SELECT_USER_ROLE = " SELECT A.GID,A.NAME,A.DESCRIPTION,A.CREATEUSER,A.CREATETIME,A.MODIFIEDUSER,A.MODIFIEDTIME,A.STATE,A.SORT,C.USERNAME FROM role as A "
                                                  + " INNER JOIN user_role as B ON A.GID = B.ROLEID INNER JOIN [user] as C ON B.USERID = C.GID AND C.GID = @userid ";

        #region 根据角色GID获取角色信息
        /// <summary>
        /// 根据角色GID获取角色信息
        /// </summary>
        /// <param name="strRoleGID"></param>
        /// <returns></returns>
        public RoleEntity GetRoleByID(string strRoleGID)
        {
            //初始化返回变量
            RoleEntity roleEntity = null;
            //初始化参数并赋值
            SqlParameter parm = new SqlParameter(PARM_MODULE_GID, SqlDbType.VarChar, 36);
            parm.Value = strRoleGID;

            using (SqlDataReader sqlRead = SqlHelper.ExecuteReader(SqlHelper.ConnectionStringLocalTransaction, CommandType.Text, SQL_SELECT_ROLE, parm))
            {
                try
                {
                    roleEntity = new RoleEntity();
                    //读取字段值
                    while (sqlRead.Read())
                    {
                        if (!sqlRead.IsDBNull(0))
                        {
                            roleEntity.GID = sqlRead.GetString(0);
                        }
                        if (!sqlRead.IsDBNull(1))
                        {
                            roleEntity.RoleName = sqlRead.GetString(1);
                        }
                        if (!sqlRead.IsDBNull(2))
                        {
                            roleEntity.RoleDescription = sqlRead.GetString(2);
                        }
                        if (!sqlRead.IsDBNull(3))
                        {
                            roleEntity.CreateUserID = sqlRead.GetString(3);
                        }
                        if (!sqlRead.IsDBNull(4))
                        {
                            roleEntity.CreateTime = sqlRead.GetDateTime(4);
                        }
                        if (!sqlRead.IsDBNull(5))
                        {
                            roleEntity.ModifiedUserID = sqlRead.GetString(5);
                        }
                        if (!sqlRead.IsDBNull(6))
                        {
                            roleEntity.ModifiedTime = sqlRead.GetDateTime(6);
                        }
                        if (!sqlRead.IsDBNull(7))
                        {
                            roleEntity.State = sqlRead.GetInt32(7);
                        }
                        if (!sqlRead.IsDBNull(8))
                        {
                            roleEntity.Sort = sqlRead.GetInt32(8);
                        }
                    }
                }
                catch (Exception exceError)
                {
                    //抛出异常
                    throw exceError;
                }
            }
            return roleEntity;
        }
        #endregion

        #region 获取所有角色信息
        /// <summary>
        /// 获取所有角色信息
        /// </summary>
        /// <returns></returns>
        public IList<RoleEntity> GetAll()
        {
            IList<RoleEntity> roleEntites = new List<RoleEntity>();

            using (SqlDataReader sqlRead = SqlHelper.ExecuteReader(SqlHelper.ConnectionStringLocalTransaction, CommandType.Text, SQL_SELECT_ROLE_ALL, null))
            {
                try
                {
                    //读取字段值
                    while (sqlRead.Read())
                    {
                        RoleEntity roleEntity = new RoleEntity();
                        if (!sqlRead.IsDBNull(0))
                        {
                            roleEntity.GID = sqlRead.GetString(0);
                        }
                        if (!sqlRead.IsDBNull(1))
                        {
                            roleEntity.RoleName = sqlRead.GetString(1);
                        }
                        if (!sqlRead.IsDBNull(2))
                        {
                            roleEntity.RoleDescription = sqlRead.GetString(2);
                        }
                        if (!sqlRead.IsDBNull(3))
                        {
                            roleEntity.CreateUserID = sqlRead.GetString(3);
                        }
                        if (!sqlRead.IsDBNull(4))
                        {
                            roleEntity.CreateTime = sqlRead.GetDateTime(4);
                        }
                        if (!sqlRead.IsDBNull(5))
                        {
                            roleEntity.ModifiedUserID = sqlRead.GetString(5);
                        }
                        if (!sqlRead.IsDBNull(6))
                        {
                            roleEntity.ModifiedTime = sqlRead.GetDateTime(6);
                        }
                        if (!sqlRead.IsDBNull(7))
                        {
                            roleEntity.State = sqlRead.GetInt32(7);
                        }
                        if (!sqlRead.IsDBNull(8))
                        {
                            roleEntity.Sort = sqlRead.GetInt32(8);
                        }

                        roleEntites.Add(roleEntity);
                    }
                }
                catch (Exception exceError)
                {
                    //抛出异常
                    throw exceError;
                }
            }
            return roleEntites;
        }
        #endregion

        /// <summary>
        /// 插入角色信息
        /// </summary>
        /// <param name="roleEntity">角色实体类</param>
        /// <returns>值为1插入数据正常,-1操作异常</returns>
        public int InserRole(RoleEntity roleEntity)
        {
            int iResult = 0;
            //获取参数
            SqlParameter[] parms = GetInsertParms();
            parms[0].Value = roleEntity.GID;
            parms[1].Value = roleEntity.RoleName;
            parms[2].Value = roleEntity.RoleDescription;
            parms[3].Value = roleEntity.State;
            parms[4].Value = roleEntity.Sort;
            parms[5].Value = roleEntity.CreateUserID;

            using (SqlConnection conn = new SqlConnection(SqlHelper.ConnectionStringLocalTransaction))
            {
                int existVal = SqlHelper.ExecuteNonQuery(conn, CommandType.Text, SQL_INSERT_ROLE, parms);
                if (existVal > 0)
                {
                    iResult = 1;
                }
                else
                {
                    iResult = -1;//执行异常
                }
            }
            return iResult;
        }

        /// <summary>
        /// 更新角色信息
        /// </summary>
        /// <param name="roleEntity"></param>
        /// <returns></returns>
        public int UpdateRole(RoleEntity roleEntity)
        {
            int iResult = 0;
            SqlParameter[] parms = GetUpdateParms();
            parms[0].Value = roleEntity.GID;
            parms[1].Value = roleEntity.RoleName;
            parms[2].Value = roleEntity.RoleDescription;
            parms[3].Value = roleEntity.State;
            parms[4].Value = roleEntity.Sort;
            parms[5].Value = roleEntity.ModifiedUserID;

            using (SqlConnection conn = new SqlConnection(SqlHelper.ConnectionStringLocalTransaction))
            {
                int existVal = SqlHelper.ExecuteNonQuery(conn, CommandType.Text, SQL_UPDATE_ROLE, parms);
                if (existVal > 0)
                {
                    iResult = 1;
                }
                else
                {
                    iResult = -1;//执行异常
                }
            }
            return iResult;
        }


        #region 生成插入语句参数
        /// <summary>
        /// 生成插入语句参数
        /// </summary>
        /// <returns>返回SqlParameter数组</returns>
        private SqlParameter[] GetInsertParms()
        {
            SqlParameter[] parms = new SqlParameter[]{
                      new SqlParameter("@gid",SqlDbType.VarChar,36),
                      new SqlParameter("@name",SqlDbType.VarChar,150),
                      new SqlParameter("@description",SqlDbType.VarChar,300),
                      new SqlParameter("@state",SqlDbType.Int),
                      new SqlParameter("@sort",SqlDbType.Int),
                      new SqlParameter("@modifieduser",SqlDbType.VarChar,36)
            };

            return parms;
        }
        #endregion

        #region 生成插入语句参数
        /// <summary>
        /// 生成插入语句参数
        /// </summary>
        /// <returns>返回SqlParameter数组</returns>
        private SqlParameter[] GetUpdateParms()
        {
            SqlParameter[] parms = new SqlParameter[]{
                      new SqlParameter("@gid",SqlDbType.VarChar,36),
                      new SqlParameter("@name",SqlDbType.VarChar,150),
                      new SqlParameter("@description",SqlDbType.VarChar,300),
                      new SqlParameter("@state",SqlDbType.Int),
                      new SqlParameter("@sort",SqlDbType.Int),
                      new SqlParameter("@modifieduser",SqlDbType.VarChar,36)
            };

            return parms;
        }
        #endregion

        #region 返回角色数据集
        /// <summary>
        /// 返回角色数据集
        /// </summary>
        /// <param name="strSql">查询SQL语句</param>
        /// <returns>返回角色数据集</returns>
        public DataSet GetRoleList(string strSql)
        {
            DataSet roleSet = new DataSet();

            roleSet = SqlHelper.ExecuteDataset(SqlHelper.ConnectionStringLocalTransaction, CommandType.Text, strSql);
            return roleSet;
        }
        #endregion
    }
}