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

namespace Tanshu.Accounts.SqlDAO
{
    public class CheckoutDAO : BaseDAO, ICheckoutDAO
    {
        private DateTime startDate;
        private DateTime finishDate;
        private Guid userID;
        public CheckoutDAO(DateTime startDate, DateTime finishDate, Guid userID, IConnectionDAO connection)
            : base(connection)
        {
            this.startDate = startDate;
            this.finishDate = finishDate;
            this.userID = userID;
        }
        public decimal GetPending(ref string info)
        {
            decimal amount = 0;
            info = "";

            string query = @"
SELECT t.Date, s.BillID, c.Name, SUM(i.Amount) AS Amount, SUM(Quantity * Rate * Discount) AS Discount FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
INNER JOIN Customers c ON s.CustomerID = c.CustomerID
WHERE t.Type = 'S'
AND t.LastEditDate BETWEEN @StartDate AND @FinishDate AND t.UserID = @UserID
AND s.Void = 0 AND s.Paid = 0
GROUP  BY t.Date, c.Name, s.BillID
";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@UserID", userID);

                using (IDataReader dr = connection.ExecuteReader(cmd))
                {
                    if (dr.Read())
                    {
                        info = "\n\r--- Pending Bills ------------------------";

                        do
                        {
                            amount += dr.GetDecimal(3);
                            info += string.Format("\n\r{0:dd-MMM-yyyy HH:mm:ss} {1} {2}", dr.GetDateTime(0), dr.GetString(1), dr.GetString(2));
                            info += string.Format("\n\rAmount: {0:#0.00} :: Discount: {1:#0.00}", dr.GetDecimal(3), dr.GetDecimal(4));
                            info += "\n\r------------------------------------------";
                        } while (dr.Read());
                    }
                }
            }
            return amount;
        }
        public decimal GetCreditCard(ref string info)
        {
            decimal amount = 0;
            info = "";

            string query = @"
SELECT t.Date, s.BillID, c.Name, SUM(i.Amount) AS Amount, SUM(Quantity * Rate * Discount) AS Discount FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
INNER JOIN Customers c ON s.CustomerID = c.CustomerID
WHERE t.Type = 'S'
AND t.LastEditDate BETWEEN @StartDate AND @FinishDate AND t.UserID = @UserID
AND s.Void = 0 AND s.Paid = 1 AND s.CreditCard = 1
GROUP  BY t.Date, c.Name, s.BillID
";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@UserID", userID);

                using (IDataReader dr = connection.ExecuteReader(cmd))
                {
                    if (dr.Read())
                    {
                        info = "\n\r--- Credit Card Bills --------------------";

                        do
                        {
                            amount += dr.GetDecimal(3);
                            info += string.Format("\n\r{0:dd-MMM-yyyy HH:mm:ss} {1} {2}", dr.GetDateTime(0), dr.GetString(1), dr.GetString(2));
                            info += string.Format("\n\rAmount: {0:#0.00} :: Discount: {1:#0.00}", dr.GetDecimal(3), dr.GetDecimal(4));
                            info += "\n\r------------------------------------------";
                        } while (dr.Read());
                    }
                }
            }
            return amount;
        }
        public decimal GetVoids(ref string info)
        {
            decimal amount = 0;
            info = "";

            string query = @"
SELECT t.Date, s.BillID, c.Name, SUM(i.Amount) AS Amount, SUM(Quantity * Rate * Discount) AS Discount FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
INNER JOIN Customers c ON s.CustomerID = c.CustomerID
WHERE t.Type = 'S'
AND t.LastEditDate BETWEEN @StartDate AND @FinishDate AND t.UserID = @UserID
AND s.Void = 1
GROUP  BY t.Date, c.Name, s.BillID
";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                using (IDataReader dr = connection.ExecuteReader(cmd))
                {
                    if (dr.Read())
                    {
                        info = "\n\r--- Void Bills ---------------------------";

                        do
                        {
                            amount += dr.GetDecimal(3);
                            info += string.Format("\n\r{0:dd-MMM-yyyy HH:mm:ss} {1} {2}", dr.GetDateTime(0), dr.GetString(1), dr.GetString(2));
                            info += string.Format("\n\rAmount: {0:#0.00} :: Discount: {1:#0.00}", dr.GetDecimal(3), dr.GetDecimal(4));
                            info += "\n\r------------------------------------------";
                        } while (dr.Read());
                    }
                }
            }
            return amount;
        }
        public decimal GetOpenings()
        {
            string query = "SELECT ISNULL(SUM(Amount), 0) FROM Payments WHERE Type = 'Opening' AND Date BETWEEN @StartDate AND @FinishDate AND CashierID = @UserID";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                return (decimal)connection.ExecuteScalar(cmd);
            }
        }
        public decimal GetReceipts()
        {
            string query = "SELECT ISNULL(SUM(Amount), 0) FROM Payments WHERE Type = 'Receipt' AND Date BETWEEN @StartDate AND @FinishDate AND CashierID = @UserID";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                return (decimal)connection.ExecuteScalar(cmd);
            }
        }
        public decimal GetPayments()
        {
            string query = "SELECT ISNULL(SUM(Amount), 0) FROM Payments WHERE Type = 'Payment' AND Date BETWEEN @StartDate AND @FinishDate AND CashierID = @UserID";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                return (decimal)connection.ExecuteScalar(cmd);
            }
        }
        public decimal GetAdditionalVoids()
        {
            string query = "SELECT ISNULL(SUM(Amount), 0) FROM Payments WHERE Type = 'Additional Void' AND Date BETWEEN @StartDate AND @FinishDate AND CashierID = @UserID";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                return (decimal)connection.ExecuteScalar(cmd);
            }
        }
        public decimal GetRetainedOvernight()
        {
            string query = "SELECT ISNULL(SUM(Amount), 0) FROM Payments WHERE Type = 'Retained at Night' AND Date BETWEEN @StartDate AND @FinishDate AND CashierID = @UserID";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                return (decimal)connection.ExecuteScalar(cmd);
            }
        }
        public decimal GetAdvancesReceived()
        {
            string query = "SELECT ISNULL(SUM(Amount), 0) FROM Advances WHERE DateIn BETWEEN @StartDate AND @FinishDate AND CashierIn = @UserID";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                return (decimal)connection.ExecuteScalar(cmd);
            }
        }
        public decimal GetAdvancesAdjusted()
        {
            string query = "SELECT ISNULL(SUM(Amount), 0) FROM Advances WHERE DateOut BETWEEN @StartDate AND @FinishDate AND CashierOut = @UserID";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                return (decimal)connection.ExecuteScalar(cmd);
            }
        }
        public string GetPaymentString()
        {
            string paymentString = "";
            string query = "SELECT Date, Type, Amount, Narration FROM Payments WHERE Date BETWEEN @StartDate AND @FinishDate AND CashierID = @UserID ORDER BY Type";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                using (IDataReader dr = connection.ExecuteReader(cmd))
                {
                    string currentType = "";
                    while (dr.Read())
                    {
                        if (currentType != dr.GetString(1))
                        {
                            paymentString += string.Format("\n\r--- {0,-30} -------", dr.GetString(1));
                            currentType = dr.GetString(1);
                        }
                        paymentString += string.Format("\n\r{0:HH:mm} => {1:#0.00} => {2}", dr.GetDateTime(0), dr.GetDecimal(2), dr.GetString(3));
                    }
                }
            }
            return paymentString;
        }
        public string GetActiveCashiers()
        {
            string cashiers = "";
            string query = @"
SELECT Name FROM Users WHERE UserID IN
(
SELECT DISTINCT UserID FROM Vouchers WHERE Date BETWEEN @StartDate AND @FinishDate 
UNION 
SELECT DISTINCT CashierID FROM Payments WHERE Date BETWEEN @StartDate AND @FinishDate 
UNION
SELECT DISTINCT CashierIn FROM Advances WHERE DateIn BETWEEN @StartDate AND @FinishDate 
UNION
SELECT DISTINCT CashierOut FROM Advances WHERE DateOut BETWEEN @StartDate AND @FinishDate
)";

            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);

                using (IDataReader dr = connection.ExecuteReader(cmd))
                {
                    while (dr.Read())
                    {
                        cashiers += string.Format("{0}, ", dr.GetString(0));
                    }
                }
            }
            return cashiers;
        }
        public decimal GetNetSales()
        {
            string query = @"
SELECT ISNULL(SUM(i.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
INNER JOIN Customers c ON s.CustomerID = c.CustomerID
WHERE t.Type = 'S'
AND t.LastEditDate BETWEEN @StartDate AND @FinishDate AND t.UserID = @UserID
AND s.Void = 0 AND s.Paid = 1
";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                return (decimal)connection.ExecuteScalar(cmd);
            }
        }
        public decimal GetDiscountsBills(ref string info)
        {
            decimal amount = 0;
            info = "";

            string query = @"
SELECT t.Date, s.BillID, c.Name, SUM(i.Amount) AS Amount, SUM(Quantity * Rate * Discount) AS Discount FROM Vouchers t INNER JOIN SaleVoucher s ON t.VoucherID = s.VoucherID
INNER JOIN Inventory i ON t.VoucherID = i.VoucherID
INNER JOIN Customers c ON s.CustomerID = c.CustomerID
WHERE t.Type = 'S'
AND t.LastEditDate BETWEEN @StartDate AND @FinishDate AND t.UserID = @UserID
AND s.Void = 1
GROUP  BY t.Date, c.Name, s.BillID, i.Discount
HAVING i.Discount > .2
";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@FinishDate", finishDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                using (IDataReader dr = connection.ExecuteReader(cmd))
                {
                    if (dr.Read())
                    {
                        info = "\n\r--- High Discounts Bills -----------------";

                        do
                        {
                            amount += dr.GetDecimal(3);
                            info += string.Format("\n\r{0:dd-MMM-yyyy HH:mm:ss} {1} {2}", dr.GetDateTime(0), dr.GetString(1), dr.GetString(2));
                            info += string.Format("\n\rAmount: {0:#0.00} :: Discount: {1:#0.00}", dr.GetDecimal(3), dr.GetDecimal(4));
                            info += "\n\r------------------------------------------";
                        } while (dr.Read());
                    }
                }
            }
            return amount;
        }

        public decimal GetOldPending()
        {
            string query = @"
SELECT ISNULL(SUM(i.Amount), 0) 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.Void = 0
AND s.Paid = 0
AND t.LastEditDate < @StartDate AND t.UserID = @UserID
";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                return (decimal)connection.ExecuteScalar(cmd);
            }
        }
        public decimal GetOldReceipts()
        {
            string query = @"
SELECT ISNULL(SUM(i.Amount), 0) 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.Void = 0
AND s.Paid = 1
AND t.CreationDate < @StartDate AND t.LastEditDate >= @StartDate AND t.UserID = @UserID
";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                return (decimal)connection.ExecuteScalar(cmd);
            }
        }
        public decimal GetOldVoided()
        {
            string query = @"
SELECT ISNULL(SUM(i.Amount), 0) 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.Void = 1
AND t.CreationDate < @StartDate AND t.LastEditDate >= @StartDate AND t.UserID = @UserID
";
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@StartDate", startDate);
                cmd.Parameters.AddWithValue("@UserID", userID);
                return (decimal)connection.ExecuteScalar(cmd);
            }
        }
    }
}