using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Transmission.SDK
{
    public class DataCheckHelper
    {
        #region 方法 -> 枚举参数过滤处理
        /// <summary>
        /// 枚举参数过滤处理，解决麻烦的SQL拼接
        /// （对照数据表给定添加、更新的参数枚举类型ValueType）
        /// Mr.Cai 2018-03-12
        /// </summary>
        /// <param name="_Type"></param>
        /// <param name="_String"></param>
        /// <returns></returns>
        public static string IsArrayType(ValueType _Type, string _String = null)
        {
            if (_String != null && _String.Length > 0)
            {
                switch (_Type)
                {
                    case ValueType.String:
                    case ValueType.DateTime_SqlSvr:
                        return string.Format("'{0}'", _String);
                    case ValueType.Int:
                    case ValueType.Double:
                    case ValueType.Boolean:
                        return _String;
                    case ValueType.DateTime:
                        return string.Format("TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", _String);
                }
            }
            return "null";
        }
        public static string IsDataType(ValueType valueType,string dataString = null)
        {
            if (dataString != null && dataString.Length > 0)
            {
                switch (valueType)
                {
                    case ValueType.String:
                    case ValueType.DateTime:
                    case ValueType.DateTime_SqlSvr:
                        return string.Format("'{0}'", dataString);
                    case ValueType.Int:
                    case ValueType.Double:
                    case ValueType.Boolean:
                        return dataString;
                }
            }
            return "null";
        }
        /// <summary>
        /// 枚举参数过滤处理，解决麻烦的SQL拼接
        /// （对照数据表给定添加、更新的参数枚举类型ValueType）
        /// Mr.Cai 2018-03-12
        /// </summary>
        /// <param name="_Type"></param>
        /// <param name="_Default">是否使用缺省值</param>
        /// <returns></returns>
        private static string IsArrayType(ValueType _Type, bool _DefaultValue = false)
        {
            if (_DefaultValue)
            {
                switch (_Type)
                {
                    case ValueType.String:
                        return "''";
                    case ValueType.Int:
                    case ValueType.Double:
                    case ValueType.Boolean:
                        return "0";
                    case ValueType.DateTime:
                        return string.Format("TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", DateTime.Now.ToString());
                    case ValueType.DateTime_SqlSvr:
                        return string.Format("'{0}'", DateTime.Now.ToString());
                }
            }
            return "null";
        }
        #endregion

        #region 方法 -> 枚举参数比较处理
        public static bool IsCheckValue(CheckType _Type, object _Front, object _After)
        {

            if ((_Front == null && _After == null) || (_Front != null && _After != null &&
                string.IsNullOrEmpty(_Front.ToString())) && string.IsNullOrEmpty(_After.ToString()))
            {
                return true;
            }

            if (_Front != null && _After != null)
            {
                switch (_Type)
                {
                    case CheckType.String:
                        if (_Front.ToString() == _After.ToString())
                        {
                            return true;
                        }
                        break;
                    case CheckType.DateTime:
                        try
                        {
                            if (DateTime.Parse(_Front.ToString()) == DateTime.Parse(_After.ToString()))
                            {
                                return true;
                            }
                        }
                        catch { }
                        break;
                    case CheckType.Decimal:
                        try
                        {
                            if (Decimal.Parse(_Front.ToString()) == Decimal.Parse(_After.ToString()))
                            {
                                return true;
                            }
                        }
                        catch { }
                        break;
                }
            }
            return false;
        }
        #endregion

        #region 方法 -> 定义 5个类型的枚举
        /// <summary>
        /// 值类型
        /// </summary>
        public enum ValueType
        {
            String = 0,
            Int = 1,
            Double = 2,
            Boolean = 3,
            DateTime = 4,
            DateTime_SqlSvr = 5
        }
        #endregion

        #region 方法 -> 定义 参数比较类型的枚举
        /// <summary>
        /// 参数比较类型
        /// </summary>
        public enum CheckType
        {
            String = 0,
            Decimal = 1,
            DateTime = 2
        }
        #endregion
    }
}