using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data;
using ICSharpCode.Core;
using Mesnac.Codd.Session;

namespace Mesnac.Action.Default.Purview
{
    /// <summary>
    /// Purview辅助类
    /// </summary>
    public class PurviewHelper
    {

        #region 角色

        /// <summary>
        /// 判断SeqIndex在角色表中是否存在
        /// </summary>
        /// <param name="shiftID">要判断的SeqIndex</param>
        /// <returns>存在返回true，否则返回false</returns>
        public static bool IsExistsSeqIndex(string seqIndex)
        {
            DbHelper dbHelper = Mesnac.Basic.DataSourceFactory.Instance.GetDbHelper(Mesnac.Basic.DataSourceFactory.MCDbType.Local);
            if (dbHelper == null)
            {
                throw new Exception(Mesnac.Basic.LanguageHelper.DataBaseConnectError);
            }
            string sqlstr = "SELECT COUNT(GUID) FROM BasRole WHERE SeqIndex = @SeqIndex";
            dbHelper.ClearParameter();
            dbHelper.CommandType = CommandType.Text;
            dbHelper.CommandText = sqlstr;
            dbHelper.AddParameter("@SeqIndex", seqIndex);
            object result = dbHelper.ToScalar();
            if (result != null && result != System.DBNull.Value)
            {
                int intResult = 0;
                if (int.TryParse(result.ToString(), out intResult))
                {
                    if (intResult > 0)
                    {
                        return true;
                    }
                }
            }
            return false;
        }

        /// <summary>
        /// 判断RoleName在角色表中是否存在
        /// </summary>
        /// <param name="shiftID">要判断的RoleName</param>
        /// <returns>存在返回true，否则返回false</returns>
        public static bool IsExistsRoleName(string roleName)
        {
            DbHelper dbHelper = Mesnac.Basic.DataSourceFactory.Instance.GetDbHelper(Mesnac.Basic.DataSourceFactory.MCDbType.Local);
            if (dbHelper == null)
            {
                throw new Exception(Mesnac.Basic.LanguageHelper.DataBaseConnectError);
            }
            string sqlstr = "SELECT COUNT(GUID) FROM BasRole WHERE RoleName = @RoleName";
            dbHelper.ClearParameter();
            dbHelper.CommandType = CommandType.Text;
            dbHelper.CommandText = sqlstr;
            dbHelper.AddParameter("@RoleName", roleName);
            object result = dbHelper.ToScalar();
            if (result != null && result != System.DBNull.Value)
            {
                int intResult = 0;
                if (int.TryParse(result.ToString(), out intResult))
                {
                    if (intResult > 0)
                    {
                        return true;
                    }
                }
            }
            return false;
        }

        #endregion

        #region 用户

        /// <summary>
        /// 获取角色列表
        /// </summary>
        /// <returns>返回角色列表</returns>
        public static DataTable GetRoleListForSelect()
        {
            DbHelper dbHelper = Mesnac.Basic.DataSourceFactory.Instance.GetDbHelper(Mesnac.Basic.DataSourceFactory.MCDbType.Local);
            if (dbHelper == null)
            {
                ICSharpCode.Core.LoggingService<PurviewHelper>.Error("获取数据连接失败，请检查数据库连接字符串是否正确!");
                throw new Exception(Mesnac.Basic.LanguageHelper.DataBaseConnectError);
            }
            string sqlstr = @"SELECT '' AS GUID, '0' AS SeqIndex, '{0}' AS RoleName
                              UNION ALL
                             SELECT GUID, SeqIndex, RoleName FROM BasRole WHERE DeleteFlag = '0' ORDER BY SeqIndex";
            sqlstr = String.Format(sqlstr, Mesnac.Basic.LanguageHelper.PleaseSelect);
            return dbHelper.GetDataTableBySql(sqlstr);
        }

        /// <summary>
        /// 获取班组列表
        /// </summary>
        /// <returns>返回班组列表</returns>
        public static DataTable GetClassListForSelect()
        {
            DbHelper dbHelper = Mesnac.Basic.DataSourceFactory.Instance.GetDbHelper(Mesnac.Basic.DataSourceFactory.MCDbType.Local);
            if (dbHelper == null)
            {
                ICSharpCode.Core.LoggingService<PurviewHelper>.Error("获取数据连接失败，请检查数据库连接字符串是否正确!");
                throw new Exception(Mesnac.Basic.LanguageHelper.DataBaseConnectError);
            }
            string sqlstr = @"SELECT '' AS GUID, 0 AS ClassID, '{0}' AS ClassName
                              UNION ALL
                              SELECT GUID, ClassID, ClassName FROM PptClass WHERE UseFlag = '1' ORDER BY ClassID";
            sqlstr = String.Format(sqlstr, Mesnac.Basic.LanguageHelper.PleaseSelect);
            return dbHelper.GetDataTableBySql(sqlstr);
        }

        /// <summary>
        /// 判断SeqIndex在用户表中是否存在
        /// </summary>
        /// <param name="shiftID">要判断的SeqIndex</param>
        /// <returns>存在返回true，否则返回false</returns>
        public static bool IsExistsSeqIndex2(string seqIndex)
        {
            DbHelper dbHelper = Mesnac.Basic.DataSourceFactory.Instance.GetDbHelper(Mesnac.Basic.DataSourceFactory.MCDbType.Local);
            if (dbHelper == null)
            {
                throw new Exception(Mesnac.Basic.LanguageHelper.DataBaseConnectError);
            }
            string sqlstr = "SELECT COUNT(GUID) FROM BasUser WHERE SeqIndex = @SeqIndex";
            dbHelper.ClearParameter();
            dbHelper.CommandType = CommandType.Text;
            dbHelper.CommandText = sqlstr;
            dbHelper.AddParameter("@SeqIndex", seqIndex);
            object result = dbHelper.ToScalar();
            if (result != null && result != System.DBNull.Value)
            {
                int intResult = 0;
                if (int.TryParse(result.ToString(), out intResult))
                {
                    if (intResult > 0)
                    {
                        return true;
                    }
                }
            }
            return false;
        }

        /// <summary>
        /// 判断用户账号在用户表中是否存在
        /// </summary>
        /// <param name="shiftID">要判断的用户账号</param>
        /// <returns>存在返回true，否则返回false</returns>
        public static bool IsExistsUserName(string userName)
        {
            DbHelper dbHelper = Mesnac.Basic.DataSourceFactory.Instance.GetDbHelper(Mesnac.Basic.DataSourceFactory.MCDbType.Local);
            if (dbHelper == null)
            {
                throw new Exception(Mesnac.Basic.LanguageHelper.DataBaseConnectError);
            }
            string sqlstr = "SELECT COUNT(GUID) FROM BasUser WHERE UserName = @UserName";
            dbHelper.ClearParameter();
            dbHelper.CommandType = CommandType.Text;
            dbHelper.CommandText = sqlstr;
            dbHelper.AddParameter("@UserName", userName);
            object result = dbHelper.ToScalar();
            if (result != null && result != System.DBNull.Value)
            {
                int intResult = 0;
                if (int.TryParse(result.ToString(), out intResult))
                {
                    if (intResult > 0)
                    {
                        return true;
                    }
                }
            }
            return false;
        }

        #endregion

    }
}