namespace Tiobon.Core.Common
{
    public class DbSelect
    {
        #region 属性
        private string tableNames;
        private string primaryTableAlias;
        private string companyId;
        private string selectItems;
        private string whereCondition;
        private string orderBy;
        private string groupBy;
        private bool isInitDefaultValue = true;
        /// <summary>
        /// 是否初始化默认查询条件，如COMPANY_ID等
        /// </summary>
        public bool IsInitDefaultValue
        {
            get
            {
                return isInitDefaultValue;
            }
            set { isInitDefaultValue = value; }
        }
        #endregion

        #region 构造函数
        public DbSelect(string tableNames, string primaryTableAlias, string companyId)
        {
            this.tableNames = tableNames;
            this.primaryTableAlias = primaryTableAlias;
            this.companyId = companyId;
        }

        public DbSelect(string tableNames, string primaryTableAlias)
        {
            this.tableNames = tableNames;
            this.primaryTableAlias = primaryTableAlias;
            this.companyId = null;
        }
        #endregion

        #region Select
        /// <summary>
        /// 解密查询
        /// </summary>
        /// <param name="selectItem"></param>
        public void SelectSecurity(string selectItem)
        {
            string aliasName = selectItem.Substring(selectItem.IndexOf(".") + 1);
            this.selectItems += "cast(decryptbykey(" + selectItem + ") AS NVARCHAR(256))" + " AS " + aliasName + ",";
        }
        /// <summary>
        /// 解密查询
        /// </summary>
        /// <param name="selectItem"></param>
        /// <param name="aliasName"></param>
        public void SelectSecurity(string selectItem, string aliasName)
        {
            this.selectItems += "cast(decryptbykey(" + selectItem + ") AS NVARCHAR(256))" + " AS " + aliasName + ",";
        }
        /// <summary>
        /// 对加密字段求和
        /// </summary>
        /// <param name="selectItem"></param>
        public void SelectSecuritySum(string selectItem)
        {
            string aliasName = selectItem.Substring(selectItem.IndexOf(".") + 1);
            this.selectItems += "isnull(sum(cast (cast(decryptbykey(" + selectItem + ") AS NVARCHAR(256)) as decimal(20,6))),0)" + " AS " + aliasName + ",";
        }
        /// <summary>
        /// 对加密字段求和
        /// </summary>
        /// <param name="selectItem"></param>
        /// <param name="aliasName"></param>
        public void SelectSecuritySum(string selectItem, string aliasName)
        {
            this.selectItems += "isnull(sum(cast (cast(decryptbykey(" + selectItem + ") AS NVARCHAR(256)) as decimal(20,6))),0)" + " AS " + aliasName + ",";
        }

        public void Select(string selectItems)
        {
            this.selectItems += selectItems + ",";
        }
        public void Select(string selectItem, string aliasName)
        {
            this.selectItems += selectItem + " AS " + aliasName + ",";
        }
        public void Select(string selectItem, string aliasName, DateFormat dateFormat)
        {
            string tempValue = string.Empty;
            switch (dateFormat)
            {
                case DateFormat.Month:
                    {
                        tempValue = "DBO.TO_CHAR(" + selectItem + ",'YYYY/MM')" + " AS " + aliasName + ",";
                        break;
                    }
                case DateFormat.Day:
                    {
                        tempValue = "DBO.TO_CHAR(" + selectItem + ",'YYYY/MM/DD')" + " AS " + aliasName + ",";
                        break;
                    }
                case DateFormat.Hour:
                    {
                        tempValue = "DBO.TO_CHAR(" + selectItem + ",'YYYY/MM/DD HH24')" + " AS " + aliasName + ",";
                        break;
                    }
                case DateFormat.Minute:
                    {
                        tempValue = "DBO.TO_CHAR(" + selectItem + ",'YYYY/MM/DD HH24:MI')" + " AS " + aliasName + ",";
                        break;
                    }
                case DateFormat.Second:
                    {
                        tempValue = "DBO.TO_CHAR(" + selectItem + ",'YYYY/MM/DD HH24:MI:SS')" + " AS " + aliasName + ",";
                        break;
                    }
            }
            this.selectItems += tempValue;
        }
        private string GetInternalSelect()
        {
            string result;
            if (string.IsNullOrEmpty(this.selectItems))
            {
                result = "*";
            }
            else
            {
                result = this.selectItems.Substring(0, this.selectItems.Length - 1);
            }
            return result;
        }
        /// <summary>
        /// 返回SQL的SELECT部分，如：SELECT *
        /// </summary>
        /// <returns></returns>
        public string GetSelect()
        {
            string result;
            if (string.IsNullOrEmpty(this.selectItems))
            {
                result = "*";
            }
            else
            {
                result = this.selectItems.Substring(0, this.selectItems.Length - 1);
            }
            return "SELECT " + result;
        }
        #endregion

        #region Where
        public void Where(string whereCondition)
        {
            this.whereCondition += whereCondition + " AND ";
        }
        public void Where(string whereCondition, params string[] args)
        {
            this.whereCondition += string.Format(whereCondition, args) + " AND ";
        }
        public void Where(string whereCondition, DateTime fieldValue)
        {
            string tempFieldValue = Convert.ToString(fieldValue);
            tempFieldValue = tempFieldValue.Replace("'", "''");
            //if (IsOracle)
            //{
            //    whereCondition = string.Format(whereCondition, "TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')");
            //}
            //else
            //{
            //    //whereCondition = string.Format(whereCondition, "DBO.TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')");
            //    whereCondition = string.Format(whereCondition, "'{0}'");
            //}
            whereCondition = string.Format(whereCondition, "'{0}'");
            whereCondition = string.Format(whereCondition, tempFieldValue);
            this.whereCondition += whereCondition + " AND ";
        }
        public void Where(string whereCondition, DateTime fieldValue1, DateTime fieldValue2)
        {
            string tempFieldValue1 = Convert.ToString(fieldValue1);
            tempFieldValue1 = tempFieldValue1.Replace("'", "''");
            string tempFieldValue2 = Convert.ToString(fieldValue2);
            tempFieldValue2 = tempFieldValue2.Replace("'", "''");
            //if (IsOracle)
            //{
            //    whereCondition = string.Format(whereCondition, "TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{1}','YYYY/MM/DD HH24:MI:SS')");
            //}
            //else
            //{
            //    //whereCondition = string.Format(whereCondition, "DBO.TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{1}','YYYY/MM/DD HH24:MI:SS')");
            //    whereCondition = string.Format(whereCondition, "'{0}'", "'{1}'");
            //}
            whereCondition = string.Format(whereCondition, "'{0}'", "'{1}'");
            whereCondition = string.Format(whereCondition, tempFieldValue1, tempFieldValue2);
            this.whereCondition += whereCondition + " AND ";
        }
        public void Where(string whereCondition, DateTime fieldValue1, DateTime fieldValue2, DateTime fieldValue3)
        {
            string tempFieldValue1 = Convert.ToString(fieldValue1);
            tempFieldValue1 = tempFieldValue1.Replace("'", "''");
            string tempFieldValue2 = Convert.ToString(fieldValue2);
            tempFieldValue2 = tempFieldValue2.Replace("'", "''");
            string tempFieldValue3 = Convert.ToString(fieldValue3);
            tempFieldValue3 = tempFieldValue3.Replace("'", "''");
            //if (IsOracle)
            //{
            //    whereCondition = string.Format(whereCondition, "TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{1}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{2}','YYYY/MM/DD HH24:MI:SS')");
            //}
            //else
            //{
            //    //whereCondition = string.Format(whereCondition, "DBO.TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{1}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{2}','YYYY/MM/DD HH24:MI:SS')");
            //    whereCondition = string.Format(whereCondition, "'{0}'", "'{1}'", "'{2}'");
            //}
            whereCondition = string.Format(whereCondition, "'{0}'", "'{1}'", "'{2}'");
            whereCondition = string.Format(whereCondition, tempFieldValue1, tempFieldValue2, tempFieldValue3);
            this.whereCondition += whereCondition + " AND ";
        }
        public void Where(string whereCondition, DateTime fieldValue1, DateTime fieldValue2, DateTime fieldValue3, DateTime fieldValue4)
        {
            string tempFieldValue1 = Convert.ToString(fieldValue1);
            tempFieldValue1 = tempFieldValue1.Replace("'", "''");
            string tempFieldValue2 = Convert.ToString(fieldValue2);
            tempFieldValue2 = tempFieldValue2.Replace("'", "''");
            string tempFieldValue3 = Convert.ToString(fieldValue3);
            tempFieldValue3 = tempFieldValue3.Replace("'", "''");
            string tempFieldValue4 = Convert.ToString(fieldValue4);
            tempFieldValue4 = tempFieldValue4.Replace("'", "''");
            //if (IsOracle)
            //{
            //    whereCondition = string.Format(whereCondition, "TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{1}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{2}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{3}','YYYY/MM/DD HH24:MI:SS')");
            //}
            //else
            //{
            //    //whereCondition = string.Format(whereCondition, "DBO.TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{1}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{2}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{3}','YYYY/MM/DD HH24:MI:SS')");
            //    whereCondition = string.Format(whereCondition, "'{0}'", "'{1}'", "'{2}'", "'{3}'");
            //}
            whereCondition = string.Format(whereCondition, "'{0}'", "'{1}'", "'{2}'", "'{3}'");
            whereCondition = string.Format(whereCondition, tempFieldValue1, tempFieldValue2, tempFieldValue3, tempFieldValue4);
            this.whereCondition += whereCondition + " AND ";
        }
        public void Where(string whereCondition, DateTime fieldValue1, DateTime fieldValue2, DateTime fieldValue3, DateTime fieldValue4, DateTime fieldValue5)
        {
            string tempFieldValue1 = Convert.ToString(fieldValue1);
            tempFieldValue1 = tempFieldValue1.Replace("'", "''");
            string tempFieldValue2 = Convert.ToString(fieldValue2);
            tempFieldValue2 = tempFieldValue2.Replace("'", "''");
            string tempFieldValue3 = Convert.ToString(fieldValue3);
            tempFieldValue3 = tempFieldValue3.Replace("'", "''");
            string tempFieldValue4 = Convert.ToString(fieldValue4);
            tempFieldValue4 = tempFieldValue4.Replace("'", "''");
            string tempFieldValue5 = Convert.ToString(fieldValue5);
            tempFieldValue5 = tempFieldValue5.Replace("'", "''");
            //if (IsOracle)
            //{
            //    whereCondition = string.Format(whereCondition, "TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{1}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{2}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{3}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{4}','YYYY/MM/DD HH24:MI:SS')");
            //}
            //else
            //{
            //    //whereCondition = string.Format(whereCondition, "DBO.TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{1}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{2}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{3}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{4}','YYYY/MM/DD HH24:MI:SS')");
            //    whereCondition = string.Format(whereCondition, "'{0}'", "'{1}'", "'{2}'", "'{3}'", "'{4}'");
            //}
            whereCondition = string.Format(whereCondition, "'{0}'", "'{1}'", "'{2}'", "'{3}'", "'{4}'");

            whereCondition = string.Format(whereCondition, tempFieldValue1, tempFieldValue2, tempFieldValue3, tempFieldValue4, tempFieldValue5);
            this.whereCondition += whereCondition + " AND ";
        }
        public void Where(string whereCondition, DateTime fieldValue1, DateTime fieldValue2, DateTime fieldValue3, DateTime fieldValue4, DateTime fieldValue5, DateTime fieldValue6)
        {
            string tempFieldValue1 = Convert.ToString(fieldValue1);
            tempFieldValue1 = tempFieldValue1.Replace("'", "''");
            string tempFieldValue2 = Convert.ToString(fieldValue2);
            tempFieldValue2 = tempFieldValue2.Replace("'", "''");
            string tempFieldValue3 = Convert.ToString(fieldValue3);
            tempFieldValue3 = tempFieldValue3.Replace("'", "''");
            string tempFieldValue4 = Convert.ToString(fieldValue4);
            tempFieldValue4 = tempFieldValue4.Replace("'", "''");
            string tempFieldValue5 = Convert.ToString(fieldValue5);
            tempFieldValue5 = tempFieldValue5.Replace("'", "''");
            string tempFieldValue6 = Convert.ToString(fieldValue6);
            tempFieldValue6 = tempFieldValue6.Replace("'", "''");
            //if (IsOracle)
            //{
            //    whereCondition = string.Format(whereCondition, "TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{1}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{2}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{3}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{4}','YYYY/MM/DD HH24:MI:SS')", "TO_DATE('{5}','YYYY/MM/DD HH24:MI:SS')");
            //}
            //else
            //{
            //    //whereCondition = string.Format(whereCondition, "DBO.TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{1}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{2}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{3}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{4}','YYYY/MM/DD HH24:MI:SS')", "DBO.TO_DATE('{4}','YYYY/MM/DD HH24:MI:SS')");
            //    whereCondition = string.Format(whereCondition, "'{0}'", "'{1}'", "'{2}'", "'{3}'", "'{4}'", "'{5}'");
            //}
            whereCondition = string.Format(whereCondition, "'{0}'", "'{1}'", "'{2}'", "'{3}'", "'{4}'", "'{5}'");
            whereCondition = string.Format(whereCondition, tempFieldValue1, tempFieldValue2, tempFieldValue3, tempFieldValue4, tempFieldValue5, tempFieldValue6);
            this.whereCondition += whereCondition + " AND ";
        }
        public void Where(string fieldName, string condition, string fieldValue)
        {
            this.whereCondition += fieldName.ToUpper() + condition + "'" + fieldValue + "'" + " AND ";
        }
        public void Where(string fieldName, string condition, Guid fieldValue)
        {
            this.whereCondition += fieldName.ToUpper() + condition + "'" + fieldValue + "'" + " AND ";
        }
        public void Where(string fieldName, string condition, decimal fieldValue)
        {
            this.whereCondition += fieldName.ToUpper() + condition + fieldValue + " AND ";
        }
        public void Where(string fieldName, string condition, int fieldValue)
        {
            this.whereCondition += fieldName.ToUpper() + condition + fieldValue + " AND ";
        }
        public void Where(string fieldName, string condition, bool fieldValue)
        {
            this.whereCondition += fieldName.ToUpper() + condition + "'" + fieldValue + "'" + " AND ";
        }
        public void Where(string fieldName, string condition, DateTime fieldValue)
        {

            string tempFieldValue = Convert.ToString(fieldValue);
            tempFieldValue = tempFieldValue.Replace("'", "''");
            string tempValue = string.Empty;
            //if (IsOracle)
            //{
            //    tempValue = fieldName.ToUpper() + condition + "TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')" + " AND ";
            //}
            //else
            //{
            //    //tempValue = fieldName.ToUpper() + condition + "DBO.TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')" + " AND ";
            //    tempValue = fieldName.ToUpper() + condition + "'{0}'" + " AND ";
            //}
            tempValue = fieldName.ToUpper() + condition + "'{0}'" + " AND ";
            tempValue = string.Format(tempValue, tempFieldValue);
            this.whereCondition += tempValue;
        }
        /// <summary>
        /// 对字段解密后进行比较
        /// </summary>
        /// <param name="fieldName"></param>
        /// <param name="condition"></param>
        /// <param name="fieldValue"></param>
        public void WhereSecurity(string fieldName, string condition, string fieldValue)
        {
            this.whereCondition += "cast(decryptbykey(" + fieldName.ToUpper() + ") AS NVARCHAR(256))" + condition + "'" + fieldValue + "'" + " AND ";
        }
        /// <summary>
        /// 对字段解密后进行比较
        /// </summary>
        /// <param name="fieldName"></param>
        /// <param name="condition"></param>
        /// <param name="fieldValue"></param>
        public void WhereSecurity(string fieldName, string condition, decimal fieldValue)
        {
            this.whereCondition += "cast(decryptbykey(" + fieldName.ToUpper() + ") AS NVARCHAR(256))" + condition + fieldValue + " AND ";
        }
        /// <summary>
        /// 对字段解密后进行比较
        /// </summary>
        /// <param name="fieldName"></param>
        /// <param name="condition"></param>
        /// <param name="fieldValue"></param>
        public void WhereSecurity(string fieldName, string condition, int fieldValue)
        {
            this.whereCondition += "cast(decryptbykey(" + fieldName.ToUpper() + ") AS NVARCHAR(256))" + condition + fieldValue + " AND ";
        }
        private string GetInternalWhere()
        {
            string result;
            #region 不初始化默认值
            if (IsInitDefaultValue == false)
            {
                if (string.IsNullOrEmpty(this.whereCondition))
                {
                    if (string.IsNullOrEmpty(companyId))
                    {
                        result = "1=1";
                    }
                    else
                    {
                        result = primaryTableAlias + ".CompanyId='" + companyId + "'";
                    }
                }
                else
                {
                    if (string.IsNullOrEmpty(companyId))
                    {
                        result = this.whereCondition.Substring(0, this.whereCondition.Length - 5);
                    }
                    else
                    {
                        result = this.whereCondition + primaryTableAlias + ".CompanyId='" + companyId + "'";
                    }
                }
            }
            #endregion
            #region 初始化默认值
            else
            {
                if (string.IsNullOrEmpty(this.whereCondition))
                {
                    if (string.IsNullOrEmpty(companyId))
                    {
                        result = "IsActive='true' AND IsDeleted='false'";
                    }
                    else
                    {
                        result = primaryTableAlias + ".CompanyId='" + companyId + "' AND " + primaryTableAlias + ".IsActive='true' AND " + primaryTableAlias + ".IsDeleted='false'";
                    }
                }
                else
                {
                    if (string.IsNullOrEmpty(companyId))
                    {
                        result = this.whereCondition + primaryTableAlias + ".IsActive='true' AND " + primaryTableAlias + ".IsDeleted='false'";
                    }
                    else
                    {
                        result = this.whereCondition + primaryTableAlias + ".CompanyId='" + companyId + "' AND " + primaryTableAlias + ".IsActive='true' AND " + primaryTableAlias + ".IsDeleted='false'";
                    }
                }
            }
            #endregion
            return result;
        }
        /// <summary>
        /// 返回SQL的WHERE部分，如：IsActive='true'
        /// </summary>
        /// <returns></returns>
        public string GetWhere()
        {
            string result;
            if (string.IsNullOrEmpty(this.whereCondition))
            {
                result = "1=1";
            }
            else
            {
                result = this.whereCondition.Substring(0, this.whereCondition.Length - 5);
            }
            return result;
        }
        #endregion

        #region 排序
        public void OrderBy(string fieldName, string direction)
        {

            string tempOrderBy = fieldName + " " + direction + ",";
            this.orderBy += tempOrderBy;
        }
        private string GetOrderBy()
        {
            string result = string.Empty;
            if (!string.IsNullOrEmpty(this.orderBy))
            {
                return " ORDER BY " + this.orderBy.Substring(0, this.orderBy.Length - 1);
            }
            else
            {
                return result;
            }
        }
        #endregion

        #region 分组
        public void GroupBy(string fieldName)
        {
            this.groupBy += fieldName + ",";
        }
        private string GetGroupBy()
        {
            string result = string.Empty;
            if (!string.IsNullOrEmpty(this.groupBy))
            {
                return " GROUP BY " + this.groupBy.Substring(0, this.groupBy.Length - 1);
            }
            else
            {
                return result;
            }
        }
        #endregion

        #region 返回SQL语句
        /// <summary>
        /// 返回SQL语句
        /// </summary>
        /// <returns></returns>
        public string GetSql()
        {
            string result = string.Empty;
            result = "SELECT " + GetInternalSelect() + " FROM " + tableNames + " WHERE " + GetInternalWhere() + GetGroupBy() + GetOrderBy();
            return result;
        }
        #endregion
    }

    public enum DateFormat
    {
        Year,
        Quarter,
        /// <summary>
        /// YYYY/MM
        /// </summary>
        Month,
        Week,
        /// <summary>
        /// YYYY/MM/DD
        /// </summary>
        Day,
        /// <summary>
        /// YYYY/MM/DD HH24
        /// </summary>
        Hour,
        /// <summary>
        /// YYYY/MM/DD HH24:MI
        /// </summary>
        Minute,
        /// <summary>
        /// YYYY/MM/DD HH24:MI:SS
        /// </summary>
        Second
    }
}