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


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

        public List<SalesAnalysisBO> GetSalesTaxReturn(DateTime startDate, DateTime finishDate, ref decimal freeSale, ref decimal voids, ref decimal pending, ref decimal net, ref decimal tax)
        {
            var list = new List<SalesAnalysisBO>();
            using (var cmd = new SqlCommand())
            {
                const string query = @"
SELECT NEWID(), 
CAST(i.Tax AS nvarchar(10)) AS Section, 
SUM(i.Quantity * i.Rate * (1 - i.Discount) * (i.Tax)) AS Quantity, 
SUM(i.Quantity * i.Rate * (1 - i.Discount)) AS Net, 
SUM(i.Amount) AS Gross
FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
WHERE t.Type = 'S' AND s.PaidStatus != @Pending AND s.PaidStatus != @Void
AND t.Date BETWEEN @StartDate AND @FinishDate
GROUP BY i.Tax
ORDER BY Section DESC;";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@Pending", (int)PaidStatus.Pending);
                cmd.Parameters.AddWithValue("@Void", (int)PaidStatus.Void);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                list = BusinessObjectDAO<SalesAnalysisBO>.GetBusinessObjects(connection.ExecuteReader(cmd));
            }


            using (var cmd = new SqlCommand())
            {
                const string query = @"
SELECT ISNULL(SUM(Quantity * Rate), 0) AS Amount
FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
WHERE t.Type = 's' AND s.PaidStatus != @Pending AND s.PaidStatus != @Void
AND t.Date BETWEEN @StartDate AND @FinishDate
AND i.Amount = 0";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@Pending", (int)PaidStatus.Pending);
                cmd.Parameters.AddWithValue("@Void", (int)PaidStatus.Void);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                freeSale = Math.Round((decimal)connection.ExecuteScalar(cmd));
            }
            using (var cmd = new SqlCommand())
            {
                const string query = @"
SELECT ISNULL(SUM(Amount), 0) AS Amount
FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
WHERE t.Type = 's'
AND t.Date BETWEEN @StartDate AND @FinishDate
AND s.PaidStatus = @Void";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@Void", (int)PaidStatus.Void);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                voids = Math.Round((decimal)connection.ExecuteScalar(cmd));
            }
            using (var cmd = new SqlCommand())
            {
                const string query = @"
SELECT ISNULL(SUM(Amount), 0) AS Amount
FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
WHERE t.Type = 's' AND s.PaidStatus = @Pending
AND t.Date BETWEEN @StartDate AND @FinishDate";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@Pending", (int)PaidStatus.Pending);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                pending = Math.Round((decimal)connection.ExecuteScalar(cmd));
            }
            using (var cmd = new SqlCommand())
            {
                const string query = @"
SELECT ISNULL(SUM(Quantity * Rate * (1 - Discount )), 0) AS Amount
FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
WHERE t.Type = 's' AND s.PaidStatus != @Pending AND s.PaidStatus != @Void
AND t.Date BETWEEN @StartDate AND @FinishDate";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@Pending", (int)PaidStatus.Pending);
                cmd.Parameters.AddWithValue("@Void", (int)PaidStatus.Void);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                net = Math.Round((decimal)connection.ExecuteScalar(cmd));
            }
            using (var cmd = new SqlCommand())
            {
                const string query = @"
SELECT ISNULL(SUM(Amount), 0) AS Amount
FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
WHERE t.Type = 's' AND s.PaidStatus != @Pending AND s.PaidStatus != @Void
AND t.Date BETWEEN @StartDate AND @FinishDate";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@Pending", (int)PaidStatus.Pending);
                cmd.Parameters.AddWithValue("@Void", (int)PaidStatus.Void);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                tax = Math.Round((decimal)connection.ExecuteScalar(cmd));
            }
            return list;
        }
        public void GetAdditionalInfo(ref decimal freeSale, ref decimal voids, ref decimal pending, ref decimal net, ref decimal tax, DateTime startDate, DateTime finishDate)
        {
            using (var cmd = new SqlCommand())
            {
                const string query = @"
SELECT ISNULL(SUM(Quantity * Rate), 0) AS Amount
FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
WHERE t.Type = 's' AND s.PaidStatus != @Pending AND s.PaidStatus != @Void
AND t.LastEditDate BETWEEN @StartDate AND @FinishDate
AND i.Amount = 0";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@Pending", (int)PaidStatus.Pending);
                cmd.Parameters.AddWithValue("@Void", (int)PaidStatus.Void);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                freeSale = Math.Round((decimal)connection.ExecuteScalar(cmd));
            }
            using (var cmd = new SqlCommand())
            {
                const string query = @"
SELECT ISNULL(SUM(Amount), 0) AS Amount
FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
WHERE t.Type = 's'
AND t.LastEditDate BETWEEN @StartDate AND @FinishDate
AND s.PaidStatus = @Void";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@Void", (int)PaidStatus.Void);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                voids = Math.Round((decimal)connection.ExecuteScalar(cmd));
            }
            using (var cmd = new SqlCommand())
            {
                const string query = @"
SELECT ISNULL(SUM(Amount), 0) AS Amount
FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
WHERE t.Type = 's' AND s.PaidStatus = @Pending
AND t.LastEditDate BETWEEN @StartDate AND @FinishDate
ORDER BY Amount DESC;";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@Pending", (int)PaidStatus.Pending);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                pending = Math.Round((decimal)connection.ExecuteScalar(cmd));
            }
            using (var cmd = new SqlCommand())
            {
                const string query = @"
SELECT ISNULL(SUM(Quantity * Rate * (1 - Discount )), 0) AS Amount
FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
WHERE t.Type = 's' AND s.PaidStatus != @Pending AND s.PaidStatus != @Void
AND t.LastEditDate BETWEEN @StartDate AND @FinishDate";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@Pending", (int)PaidStatus.Pending);
                cmd.Parameters.AddWithValue("@Void", (int)PaidStatus.Void);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                net = Math.Round((decimal)connection.ExecuteScalar(cmd));
            }
            using (var cmd = new SqlCommand())
            {
                const string query = @"
SELECT ISNULL(SUM(Amount), 0) AS Amount
FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
WHERE t.Type = 's' AND s.PaidStatus != @Pending AND s.PaidStatus != @Void
AND t.LastEditDate BETWEEN @StartDate AND @FinishDate";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@Pending", (int)PaidStatus.Pending);
                cmd.Parameters.AddWithValue("@Void", (int)PaidStatus.Void);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                tax = Math.Round((decimal)connection.ExecuteScalar(cmd));
            }
        }
        public List<SalesAnalysisDetailBO> GetSaleDetail(DateTime startDate, DateTime finishDate, Guid costCenterID)
        {
            using (SqlCommand cmd = new SqlCommand())
            {
                string query = @"
SELECT p.Name AS Product, pt.Name AS Section, SUM(i.Quantity) AS Quantity, SUM(Amount) AS Amount
FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
INNER JOIN Products p ON i.ProductID = p.ProductID
INNER JOIN ProductTypes pt ON p.ProductTypeID = pt.ProductTypeID
INNER JOIN Ledgers l ON p.SaleLedgerID = l.LedgerID
WHERE t.Type = 's' AND s.PaidStatus != @Pending AND s.PaidStatus != @Void
AND t.LastEditDate BETWEEN @StartDate AND @FinishDate AND l.CostCenterID = @CostCenterID
GROUP BY p.Name, pt.Name
ORDER BY Amount DESC;";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@Pending", (int)PaidStatus.Pending);
                cmd.Parameters.AddWithValue("@Void", (int)PaidStatus.Void);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@CostCenterID", costCenterID);
                return BusinessObjectDAO<SalesAnalysisDetailBO>.GetBusinessObjects(connection.ExecuteReader(cmd));

            }
        }
        public List<SalesAnalysisBO> GetSale(DateTime startDate, DateTime finishDate)
        {
            using (var cmd = new SqlCommand())
            {
                const string query = @"
SELECT c.CostCenterID AS TypeID, c.Name AS Section, SUM(i.Quantity) AS Quantity, SUM(Amount) AS Gross, SUM(i.Quantity * i.Rate * (1 - Discount)) AS Net
FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
INNER JOIN Products p ON i.ProductID = p.ProductID
INNER JOIN Ledgers l ON p.SaleLedgerID = l.LedgerID
INNER JOIN CostCenters c ON l.CostCenterID = c.CostCenterID
WHERE t.Type = 's' AND s.PaidStatus != @Pending AND s.PaidStatus != @Void
AND t.LastEditDate BETWEEN @StartDate AND @FinishDate
GROUP BY c.CostCenterID, c.Name
ORDER BY Net DESC;";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@Pending", (int)PaidStatus.Pending);
                cmd.Parameters.AddWithValue("@Void", (int)PaidStatus.Void);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                var list = BusinessObjectDAO<SalesAnalysisBO>.GetBusinessObjects(connection.ExecuteReader(cmd));
                decimal gross = 0, net = 0;
                foreach (var i in list)
                {
                    gross += i.Gross;
                    net += i.Net;
                }
                list.Add(new SalesAnalysisBO
                {
                    Section = "Total",
                    Gross = gross,
                    Net = net
                });
                list.Add(new SalesAnalysisBO() { Section = "  --  ", Gross = 0, Net = 0 });
                list.Add(new SalesAnalysisBO
                {
                    Section = "Tax",
                    Net = gross - net
                });
                return GetSettlement(list, startDate, finishDate);
            }
        }

        private List<SalesAnalysisBO> GetSettlement(List<SalesAnalysisBO> outList, DateTime startDate, DateTime finishDate)
        {
            outList.Add(new SalesAnalysisBO() { Section = "  --  ", Gross = 0, Net = 0 });
            if (finishDate <= startDate)
                return new List<SalesAnalysisBO>();
            using (var cmd = new SqlCommand())
            {
                const string query = @"
SELECT s.PaidStatus AS Status, Sum(i.Amount) AS Amount
FROM Vouchers v INNER JOIN SaleVoucher s ON v.VoucherID = s.VoucherID
INNER JOIN Inventory i ON v.VoucherID = i.VoucherID
WHERE v.LastEditDate BETWEEN @StartDate AND @FinishDate
GROUP BY s.PaidStatus
ORDER BY s.PaidStatus
";
                cmd.CommandText = query;
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);

                var list = BusinessObjectDAO<SettlementReportBO>.GetBusinessObjects(connection.ExecuteReader(cmd));
                decimal amount = 0;
                foreach (var item in list)
                {
                    amount += item.Amount;
                    outList.Add(new SalesAnalysisBO(){ Section = item.Status.ToString() , Net = item.Amount});
                }
                outList.Add(new SalesAnalysisBO() { Section = "Total", Net = amount });
                return outList;
            }
        }

        public decimal GetDetail(PaidStatus paidStatus, DateTime startDate, DateTime finishDate)
        {
            const string query = @"
SELECT SUM(i.Amount) AS Amount, SUM(i.Quantity * i.Rate * i.Discount) AS Discount FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
WHERE t.Type = 'S'
AND t.LastEditDate BETWEEN @StartDate AND @FinishDate
AND s.PaidStatus = @PaidStatus
";
            using (var cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@PaidStatus", (int)paidStatus);
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                return (decimal)connection.ExecuteScalar(cmd);
            }
        }
    }
}