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

namespace Payroll.Service
{
    public class RecruitementProcessDA
    {

        internal static void Insert(RecruitementProcess obRecrProc, TransactionContext tc)
        {
            DateTime? endDate;
            if (obRecrProc.EndDate == DateTime.MinValue) endDate = null;
            else endDate = obRecrProc.EndDate;

            string sql = SQLParser.MakeSQL(@"Insert Into RecruitementProcess(RecruitementProcessID,Code,
                         Description,StartDate,EndDate,ProcessStatus) Values(%n,%s,%s,%D,%d,%n)", obRecrProc.ID.Integer, obRecrProc.Code,
                         obRecrProc.Description, obRecrProc.StartDate, DataReader.GetNullValue(endDate), obRecrProc.ProcessStatus);
            tc.ExecuteNonQuery(sql);
        }

        internal static void Update(RecruitementProcess obRecrProc,TransactionContext tc)
        {
            DateTime? endDate;
            if (obRecrProc.EndDate == DateTime.MinValue) endDate = null;
            else endDate = obRecrProc.EndDate;
            string sql = SQLParser.MakeSQL(@"Update RecruitementProcess Set Code = %s,
                         Description = %s,StartDate = %D,EndDate = %d,ProcessStatus = %n Where RecruitementProcessID = %n",
                         obRecrProc.Code, obRecrProc.Description, obRecrProc.StartDate, DataReader.GetNullValue(endDate), obRecrProc.ProcessStatus,obRecrProc.ID.Integer);
            tc.ExecuteNonQuery(sql);
        }
        internal static void Delete(ID id,TransactionContext tc)
        {
            string sql = SQLParser.MakeSQL(@"Delete From RecruitementProcess Where RecruitementProcessID = %n", id.Integer);
            tc.ExecuteNonQuery(sql);
        }

        internal static IDataReader Get(TransactionContext tc)
        {
            string sql = SQLParser.MakeSQL(@"Select * From RecruitementProcess");
            return tc.ExecuteReader(sql);
        }

        internal static IDataReader GetByProcessId(TransactionContext tc, ID procID)
        {
            string sql = SQLParser.MakeSQL(@"Select * From RecruitementProcess Where RecruitementProcessID = %n",
                                           procID.Integer);
            return tc.ExecuteReader(sql);
        }

        internal static DataSet GetShortListedCandidates(ID processID,TransactionContext tc)
        {
////            string sql = SQLParser.MakeSQL(@"
////                         select A.cvID as candidateID,count(A.cvID) as totalStep ,IsEmployee = 0 from 
////                         (select cvID from RecruitementCandidate  where processID = %n and IsEmployee = 0) as A 
////                         inner join 
////                         (
////                         select * From recruitementSelectedCandidate Where processID = %n And (
////                         stepID in (select RecruitementStepID from RecruitementStep Where ProcessId = %n) And isSelected = 1 and IsEmployee = 0) 
////                         ) 
////                         as B
////                         on 
////                         A.cvID = B.CandidateID 
////                         group by cvID having count(A.cvID) = (select count(*) from RecruitementStep where processID = %n)
////                         union 
////                         select A.employeeID as candidateID,count(A.employeeID) as totalStep,IsEmployee = 1 from 
////                         (select employeeID from RecruitementCandidate  where processID = %n and IsEmployee = 1) as A 
////                         inner join 
////                         ( 
////                         select * From recruitementSelectedCandidate Where processID = %n And (
////                         stepID in (select RecruitementStepID from RecruitementStep Where ProcessId = %n) And isSelected = 1 and IsEmployee = 1) 
////                         ) 
////                         as B
////                         on 
////                         A.employeeID = B.CandidateID 
////                         group by employeeID having count(A.employeeID) = (select count(*) from RecruitementStep where processID = %n)",processID.Integer,processID.Integer,processID.Integer,processID.Integer,processID.Integer,processID.Integer,processID.Integer,processID.Integer);

            string sql =
                SQLParser.MakeSQL(
                    @"select * From recruitementSelectedCandidate  Where processID = %n And (isSelected = 1 And 
                         stepID = (select MAX(RecruitementStepID) from RecruitementStep Where ProcessId = %n) )", processID.Integer, processID.Integer);
            
            return tc.ExecuteDataSet(sql);
        }

        internal static IDataReader CheckCode(TransactionContext tc, string code)
        {
            string sql = SQLParser.MakeSQL(@"Select * From RecruitementProcess Where Code = %s", code);
            return tc.ExecuteReader(sql);
        }

        internal static IDataReader GetByCandediateID(TransactionContext tc, ID nCandidateID)
        {
            string sql = SQLParser.MakeSQL(@"Select * from RecruitementCandidate where CandidateID=%n", nCandidateID.Integer);
            return tc.ExecuteReader(sql);
        }

        internal static IDataReader Get(string query, TransactionContext tc)
        {
            string sql = SQLParser.MakeSQL(@"Select * From RecruitementProcess Where (%q)", query);
            return tc.ExecuteReader(sql);
        }

        internal static IDataReader GetProcess(TransactionContext tc, int status)
        {
            string sql = SQLParser.MakeSQL(@"Select * From RecruitementProcess Where ProcessStatus = %n", status);
            return tc.ExecuteReader(sql);
        }

        internal static IDataReader GetProcess(TransactionContext tc, ID processID, ID stepID, int empID)
        {
            string sql = SQLParser.MakeSQL(@"Select * From RecruitementProcess Where  RecruitementProcessID in (select ProcessId"+
                         " from dbo.RecruitementBoardMember where EmployeeId=%n and StepId=%n and ProcessId=%n)", 
                         empID, stepID.Integer, processID.Integer);
            return tc.ExecuteReader(sql);
        }

        internal static IDataReader GetProcess(TransactionContext tc, int status, int empID)
        {
            string sql = SQLParser.MakeSQL(@"Select * From RecruitementProcess Where ProcessStatus = %n and RecruitementProcessID in " +
                          " (select ProcessId from dbo.RecruitementBoardMember where EmployeeId=%n)",
                          status,empID);
            return tc.ExecuteReader(sql);
        }

        internal static IDataReader GetProcessID(TransactionContext tc, int status, int empID, ID stepID)
        {
            string sql = SQLParser.MakeSQL(@"Select * From RecruitementProcess Where  RecruitementProcessID in (select ProcessId" +
                         " from dbo.RecruitementBoardMember where EmployeeId=%n and StepId=%n )", empID, stepID.Integer);
            return tc.ExecuteReader(sql);
        }
    }
}