using System;
using System.Data;
using System.Linq;
using Ease.CoreV35;
using Ease.CoreV35.Model;
using Ease.CoreV35.DataAccess;
using System.Collections.Generic;
using Payroll.BO; 

namespace Payroll.Service
{
    public class GlobalFunctionService : ServiceTemplate, IGlobalFunctionService
    {
        public GlobalFunctionService()
        {

        }
        protected override T CreateObject<T>(DataReader dr)
        {
            return new object() as T;
        }

        public DateTime GetOperationDate()
        {
            DateTime opDate;

            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                opDate = GlobalFunctionDA.GetOperationDate(tc);

                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);

                throw new ServiceException(e.Message, e);
                #endregion
            }

            return opDate;
        }
        public DataSet GetSalarySummary(DateTime fromDate, DateTime toDate)
        {
            DataSet  opDate;

            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                opDate = GlobalFunctionDA.GetSalarySummary(tc, fromDate, toDate);

                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);

                throw new ServiceException(e.Message, e);
                #endregion
            }

            return opDate;
        }


        public static string GetMaxCode(TransactionContext tc, string parentTag, string childTag, string TableName, string ColumnName)
        {
            string sCode="";
            int intValue=0;
            try
            {
                sCode = GlobalFunctionDA.GetMaxCode(tc, TableName, ColumnName);
                if (sCode != "")
                {
                    if (!int.TryParse(sCode, out intValue))
                         throw new ServiceException("Invalid code format; system can't do auto increment" + sCode);
                    intValue = intValue + 1;
                }
                else
                    intValue = 1;

                int Codelength = ConfigurationManager.GetAttributeIntValue(parentTag, childTag, "codelength", EnumConfigurationType.Logic);
                if (Codelength < 1 || 10 < Codelength)
                    Codelength = 3;

                return intValue.ToString().PadLeft(Codelength, '0');
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);

                throw new ServiceException(e.Message, e);
                #endregion
            }
        }

        public static string GetMaxCode(TransactionContext tc, string parentTag, string childTag, string TableName, string ColumnName, int tier)
        {
            string sCode = "";
            int intValue = 0;
            try
            {
                sCode = GlobalFunctionDA.GetMaxCode(tc, TableName, ColumnName, tier);
                if (sCode != "")
                {
                    if (!int.TryParse(sCode, out intValue))
                        throw new ServiceException("Invalid code format; system can't do auto increment" + sCode);
                    intValue = intValue + 1;
                }
                else
                    intValue = 1;

                int Codelength = ConfigurationManager.GetAttributeIntValue(parentTag, childTag, "codelength", EnumConfigurationType.Logic);
                if (Codelength < 1 || 10 < Codelength)
                    Codelength = 3;

                return intValue.ToString().PadLeft(Codelength, '0');
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);

                throw new ServiceException(e.Message, e);
                #endregion
            }
        }


        public static string GetMaxCodeofTree(TransactionContext tc, string parentTag, string childTag, 
            string TableName, string ColumnName, string parentCode, int Tier)
        {
            string sCode = "";
            int intValue = 0;
            try
            {

                int Codelength = ConfigurationManager.GetAttributeIntValue(parentTag, childTag, "codelength", EnumConfigurationType.Logic);
                if (Codelength < 1 || 10 < Codelength)
                    Codelength = 3;

                bool isAutoGenerated = ConfigurationManager.GetBoolValue(parentTag, childTag, EnumConfigurationType.Logic);
                if (isAutoGenerated == true)
                    sCode = GlobalFunctionDA.GetMaxCode(tc, TableName, ColumnName, Tier);

                if (sCode != "")
                {
                    if (sCode.Length > parentCode.Length)
                    {
                        sCode = sCode.Substring(parentCode.Length + 1, (sCode.Length - parentCode.Length) - 1);                                             
                    }
                    else throw new ServiceException("Invalid Code format:" + sCode);
                    
                    if (!int.TryParse(sCode, out intValue))
                        throw new ServiceException("Invalid code format; system can't do auto increment" + sCode);
                    intValue = intValue + 1;
                }
                else  intValue = 1;
                
                
                return ((parentCode=="")? "" : parentCode+ ".") + intValue.ToString().PadLeft(Codelength, '0');
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);

                throw new ServiceException(e.Message, e);
                #endregion
            }

        }


        public void BackupDatabase(string sPath)
        {
            TransactionContext tc = null;
            try
            {
                tc = TransactionContext.Begin();
                GlobalFunctionDA.BackupDatabase(tc, sPath);

                tc.End();
            }
            catch (Exception e)
            {
                #region Handle Exception
                if (tc != null)
                    tc.HandleError();
                ExceptionLog.Write(e);

                throw new ServiceException(e.Message, e);
                #endregion
            }          
        }

    }
}