using System;
using System.Collections.Generic;
using System.Text;
using System.Data.SqlClient;
using Tanshu.Accounts.Contracts;
using Tanshu.Data.DAO;
using Tanshu.Accounts.DAOFactory;

namespace Tanshu.Accounts.SqlDAO
{
    public class AdvanceDAO : BaseDAO, IAdvanceDAO
    {
        public AdvanceDAO(IConnectionDAO connection)
            : base(connection)
        { }

        public void Insert(AdvanceBO advance)
        {
            SqlCommand cmd = new SqlCommand(@"
SET @AdvanceID = NEWID();
INSERT INTO Advances (AdvanceID, Amount, Narration, CashierIn, DateIn, CashierOut, DateOut) 
VALUES (@AdvanceID, @Amount, @Narration, @CashierIn, @DateIn, @CashierOut, @DateOut)
");
            cmd.Parameters.Add("@AdvanceID", System.Data.SqlDbType.UniqueIdentifier);
            cmd.Parameters["@AdvanceID"].Direction = System.Data.ParameterDirection.Output;
            cmd.Parameters.AddWithValue("@Amount", advance.Amount);
            cmd.Parameters.AddWithValue("@Narration", advance.Narration);
            cmd.Parameters.AddWithValue("@CashierIn", advance.CashierIn);
            cmd.Parameters.AddWithValue("@DateIn", advance.DateIn);
            if (advance.CashierOut.HasValue)
                cmd.Parameters.AddWithValue("@CashierOut", advance.CashierOut);
            else
                cmd.Parameters.AddWithValue("@CashierOut", DBNull.Value);
            if (advance.DateOut.HasValue)
                cmd.Parameters.AddWithValue("@DateOut", advance.DateOut);
            else
                cmd.Parameters.AddWithValue("@DateOut", DBNull.Value);
            connection.ExecuteNonQuery(cmd);
            advance.AdvanceID = (Guid)cmd.Parameters["@AdvanceID"].Value;
        }
        public List<AdvanceDisplayBO> GetAdvances(DateTime fromDate, DateTime toDate, bool all)
        {
            string query = "SELECT a.*, u.Name AS Cashier FROM Advances a INNER JOIN Users u ON a.CashierIn = u.UserID WHERE DateIn BETWEEN @StartDate AND @FinishDate";
            if (!all)
                query += " AND CashierOut IS NULL";
            SqlCommand cmd = new SqlCommand(query);
            cmd.Parameters.AddWithValue("@StartDate", fromDate);
            cmd.Parameters.AddWithValue("@FinishDate", toDate);
            return BusinessObjectDAO<AdvanceDisplayBO>.GetBusinessObjects(connection.ExecuteReader(cmd));
        }
        public void Adjust(Guid advanceID, Guid userID)
        {
            SqlCommand cmd = new SqlCommand("UPDATE Advances SET CashierOut = @CashierOut, DateOut = GETDATE() WHERE AdvanceID = @AdvanceID");
            cmd.Parameters.AddWithValue("@AdvanceID", advanceID);
            cmd.Parameters.AddWithValue("@CashierOut", userID);
            connection.ExecuteNonQuery(cmd);
        }
    }
}