using DevExpress.Xpo;
using System;
using System.Data;

namespace AFKAbutment
{
    public static class DatabaseFormatJudgment
    {


        /// <summary>
        /// 判断输入的字符串是否可以转换成数值类型
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static bool IsNumberic(string str)
        {
            double vsNum;
            bool isNum;
            isNum = double.TryParse(str, System.Globalization.NumberStyles.Float,
                System.Globalization.NumberFormatInfo.InvariantInfo, out vsNum);
            if (string.IsNullOrWhiteSpace(str)) isNum = false;
            return isNum;
        }

        /// <summary>
        /// <para>说明：SQLQuery验证</para>
        /// <para>创建人：</para>
        /// <para>创建日期： </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// <param name="TableProperties">数据库的表格属性表</param>
        /// <param name="fieldKey">列名</param>
        /// <param name="fieldValue">值</param>
        /// </summary>
        public static string SQLQueryVerification(DataTable TableProperties, string fieldKey, string fieldValue,string Comment = null)
        {

            if (TableProperties.Rows.Count == 0) return "";
            DataRow[] ListOfAttributes = TableProperties.Select("COLUMN_NAME='" + fieldKey + "'");//指定列的数据库属性
            if (ListOfAttributes == null || ListOfAttributes.Length == 0) return "";
            string saveErrorMessage = string.Empty;
            int MaxInputLength = 0;//最大长度

            //判断长度是否超出
            //if (ListOfAttributes[0]["DATA_TYPE"].ToString().Equals("varchar"))
            //{
            //    if (int.Parse(ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"].ToString()) == -1)
            //    {
            //        ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"] = 8000;
            //    }
            //    MaxInputLength = System.Text.Encoding.Default.GetBytes(fieldValue).Length;
            //}
            //else if (ListOfAttributes[0]["DATA_TYPE"].ToString().Equals("nvarchar"))
            //{
            //    if (int.Parse(ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"].ToString()) == -1)
            //    {
            //        ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"] = 4000;
            //    }
            //    MaxInputLength = fieldValue.Length;
            //}
            //if (!string.IsNullOrWhiteSpace(ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"] + "") && IsNumberic(ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"] + "") && int.Parse(ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"].ToString()) < MaxInputLength)
            //{
            //    saveErrorMessage = saveErrorMessage + fieldKey + ": 输入内容长度超出限制;\r\n";
            //}

            //判断属性是否正确
            //if ((ListOfAttributes[0]["DATA_TYPE"].ToString().Equals("int") || ListOfAttributes[0]["DATA_TYPE"].ToString().Equals("decimal")) && !IsNumberic((row[col.ColumnName] + "").Replace("'", "''")) && !string.IsNullOrWhiteSpace((row[col.ColumnName] + "")))
            //{
            //    saveErrorMessage = saveErrorMessage + hasContainRow["username"].ToString() + "~" + col.ColumnName + ": 数据格式错误,请输入数值;\r\n";
            //}

            //判断非空
            if ((ListOfAttributes[0]["IS_NULLABLE"].ToString().Equals("NO") && string.IsNullOrWhiteSpace(fieldValue)))
            {
                saveErrorMessage = saveErrorMessage + (string.IsNullOrWhiteSpace(Comment) ? fieldKey : Comment + "不能为空#");
            }

            return saveErrorMessage;
        }


        /// <summary>
        /// <para>说明：MYSQL验证</para>
        /// <para>创建人：</para>
        /// <para>创建日期： </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// <param name="TableProperties">数据库的表格属性表</param>
        /// <param name="fieldKey">列名</param>
        /// <param name="fieldValue">值</param>
        /// </summary>
        public static string MYSqlVerification(DataTable TableProperties, string fieldKey, string fieldValue, string Comment = null)
        {

            if (TableProperties.Rows.Count == 0) return "";
            DataRow[] ListOfAttributes = TableProperties.Select("Field='" + fieldKey + "'");//指定列的数据库属性
            if (ListOfAttributes == null || ListOfAttributes.Length == 0) return "";
            string saveErrorMessage = string.Empty;
            int MaxInputLength = 0;//最大长度

            //判断长度是否超出
            //if (ListOfAttributes[0]["DATA_TYPE"].ToString().Equals("varchar"))
            //{
            //    if (int.Parse(ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"].ToString()) == -1)
            //    {
            //        ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"] = 8000;
            //    }
            //    MaxInputLength = System.Text.Encoding.Default.GetBytes(fieldValue).Length;
            //}
            //else if (ListOfAttributes[0]["DATA_TYPE"].ToString().Equals("nvarchar"))
            //{
            //    if (int.Parse(ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"].ToString()) == -1)
            //    {
            //        ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"] = 4000;
            //    }
            //    MaxInputLength = fieldValue.Length;
            //}
            //if (!string.IsNullOrWhiteSpace(ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"] + "") && IsNumberic(ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"] + "") && int.Parse(ListOfAttributes[0]["CHARACTER_MAXIMUM_LENGTH"].ToString()) < MaxInputLength)
            //{
            //    saveErrorMessage = saveErrorMessage + fieldKey + ": 输入内容长度超出限制;\r\n";
            //}

            //判断属性是否正确
            //if ((ListOfAttributes[0]["DATA_TYPE"].ToString().Equals("int") || ListOfAttributes[0]["DATA_TYPE"].ToString().Equals("decimal")) && !IsNumberic((row[col.ColumnName] + "").Replace("'", "''")) && !string.IsNullOrWhiteSpace((row[col.ColumnName] + "")))
            //{
            //    saveErrorMessage = saveErrorMessage + hasContainRow["username"].ToString() + "~" + col.ColumnName + ": 数据格式错误,请输入数值;\r\n";
            //}

            //判断非空
            if ((ListOfAttributes[0]["Null"].ToString().Equals("NO") && string.IsNullOrWhiteSpace(fieldValue)))
            {
                saveErrorMessage = saveErrorMessage + (string.IsNullOrWhiteSpace(Comment) ? fieldKey : Comment + "不能为空#");
            }

            return saveErrorMessage;
        }


    }
}