using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
using Tanshu.Accounts.Contracts;
using Tanshu.Accounts.Entities;
using Tanshu.Accounts.Repository;
using System.Diagnostics;
using Tanshu.Common.Helpers;

namespace Tanshu.Accounts.Print
{

    public static partial class Thermal
    {
        private const string DrawLine = "\n\r------------------------------------------";
        private const string DrawEqual = "\n\r==========================================";

        private static string DesignKot(Voucher voucher, Kot kot, IEnumerable<Inventory> billItems, int copyNumber)
        {
            var waiter = voucher.Waiter;
            var billText = "\n\r" + "KOT / BOT".Center42();
            billText += "\n\r" + string.Format("Copy No. {0}", copyNumber).Center42();
            billText += DrawLine;
            billText += string.Format("\n\rKOT ID : {0,-7}/{1,-7} {2:dd-MMM-yyyy HH:mm}", voucher.KotID, kot.Code, kot.Date);
            billText += string.Format("\n\rTable No.: {0} / {1}", voucher.TableID, waiter.Name);
            billText += DrawLine;
            billText += "\n\r Qty.  x Name                             ";
            billText += DrawLine;
            foreach (var item in billItems)
            {
                billText += string.Format("\n\r{0,6:#,##0.00} x {1,-33}", item.Quantity, Name(item.Product));
                foreach (var mod in item.InventoryModifier)
                    billText += string.Format("\n\r      --- {0,-32}", mod.Modifier.Name);
            }
            billText += DrawLine;
            if (voucher.Narration != "")
            {
                billText += "\n\r" + FormatText(voucher.Narration, 42, Align.Centre);
                billText += DrawLine;
            }
            return billText;
        }

        private static string DesignBill(Voucher voucher)
        {
            var list = new Dictionary<int, Inventory>();
            foreach (var item in voucher.Kots.SelectMany(kot => kot.Inventories))
            {
                if (list.ContainsKey(item.Product.ProductID))
                    list[item.Product.ProductID].Quantity += item.Quantity;
                else
                    list.Add(item.Product.ProductID, item);
            }

            return DesignBill(voucher, list);
        }

        private static decimal Amount(IEnumerable<Inventory> list)
        {
            return list.Sum(item => item.Amount);
        }

        private static decimal ServiceTax(IEnumerable<Inventory> list)
        {
            return list.Sum(item => item.Quantity * item.Price * (1 - item.Discount) * (1 + (item.IsScTaxable ? item.ServiceCharge : 0)) * item.ServiceTax);
        }

        private static decimal SplitTax(IEnumerable<Inventory> list, decimal rate)
        {
            return list.Where(x => x.Vat == rate).Sum(item => item.Quantity * item.Price * (1 - item.Discount) * (1 + (item.IsScTaxable ? item.ServiceCharge : 0)) * item.Vat);
        }

        private static string Name(Product product)
        {
            return string.IsNullOrEmpty(product.Units)
                       ? product.Name
                       : string.Format("{0} ({1})", product.Name, product.Units);
        }

        private static string FormatText(string inputString, int width, Align alignment)
        {
            if (inputString.Length > width)
                return inputString.Substring(0, width);
            if (alignment == Align.Left)
                return string.Format("{0,-" + width + "}", inputString);
            if (alignment == Align.Centre)
            {
                int left = Convert.ToInt32(Math.Ceiling(Convert.ToDouble((width - inputString.Length) / 2))) +
                           inputString.Length;
                inputString = string.Format("{0,-" + left + "}", inputString);
                return string.Format("{0," + width + "}", inputString);
            }
            if (alignment == Align.Right)
                return string.Format("{0," + width + "}", inputString);
            return inputString;
        }

        private static string FormatBillNum(decimal amount, int length)
        {
            var temp = String.Format("{0:#,##0.00;(#,##0.00);0}", amount);
            return string.Format("{0," + length + "}", temp);
        }

        private static bool PrintRaw(PrintLocation printer, string text, string documentName)
        {
#if (DEBUG)
            MessageBox.Show(text);
            return true;
#else
            text += printer.CutCode;
            if (!ThermalPrinter.Printer.Print(printer.Printer, documentName, text))
                MessageBox.Show("Error in PrintRAW Function. Please Report immediately");
            return true;
#endif
        }

        public static Boolean PrintAdvance(string user, string advance, string narration)
        {
            var billText = "\n\r" + FormatText("Hops n Grains", 42, Align.Centre);
            billText += "\n\r" + FormatText("The Microbrewery", 42, Align.Centre);
            billText += "\n\r" + FormatText("SCO 358, Sector 9, Panchkula", 42, Align.Centre);
            billText += "\n\r" + FormatText("A Unit of Peitho Foods Pvt. Ltd.", 42, Align.Centre);
            billText += DrawLine;
            billText += "\n\r" +
                        FormatText(string.Format("{0:dd-MMM-yyyy HH:mm:ss}", DateTime.Now), 42, Align.Centre);
            billText += "\n\r" + FormatText("Received Rs. " + advance + " as advance.", 42, Align.Centre);
            billText += DrawLine;
            if (narration != "") billText += "\n\r" + FormatText(narration, 42, Align.Centre);
            billText += DrawLine;
            billText += "\n\r" + FormatText("Thanking you " + user, 42, Align.Left);
            billText += "\n\r";
            billText += "\n\r";
            billText += "\n\r";
            billText += "\n\r";
            billText += "\n\r";
            billText += "Signed" + "\n\r";
            billText += "\n\r";
            PrintRaw(PrintLocationBI.BasePrinter, billText, "Advance for " + user);
            return PrintRaw(PrintLocationBI.BasePrinter, billText, "Advance for " + user);
        }

        public static Boolean PrintClosing(CheckoutBI details)
        {
            try
            {
                var billText = FormatText(string.Format("{0} Checkout By {1}", details.Cashier.Name, details.Manager), 42, Align.Centre);
                billText += string.Format("\n\r{0:dd-MMM-yy} To {1:dd-MMM-yy} @ {2:dd-MMM-yyyy HH:mm}",
                                          details.StartDate, details.FinishDate, DateTime.Now);
                billText += DrawLine;
                //BillText += string.Format("\n\rOpening       : {0,26:#,##0.00}", details.Opening);
                //BillText += string.Format("\n\rReceipts      : {0,26:#,##0.00}", details.Receipts);
                billText += string.Format("\n\rAdvance Rcv.  : {0,26:#,##0.00}", details.AdvanceReceipts);
                billText += string.Format("\n\rCC Receipts   : {0,26:#,##0.00}", details.CcReceipts);
                billText += string.Format("\n\rNC Amount     : {0,26:#,##0.00}", details.NcReceipts);
                billText += string.Format("\n\rBTC Amount    : {0,26:#,##0.00}", details.BtcReceipts);
                billText += string.Format("\n\rCash Amount   : {0,26:#,##0.00}", details.CashReceipts);
                billText += string.Format("\n\rAdvance Adj.  : {0,26:#,##0.00}", details.AdvanceAdjusted);
                //BillText += string.Format("\n\rPayments      : {0,26:#,##0.00}", details.CashPayments);
                //BillText += string.Format("\n\rAddl. Voids   : {0,26:#,##0.00}", details.AdditionalVoids);
                billText += string.Format("\n\rVoids in Sys. : {0,26:#,##0.00}", details.VoidsInSystem);
                billText += string.Format("\n\rDiscounts     : {0,26:#,##0.00}", details.Discount);
                billText += string.Format("\n\rPending Bills : {0,26:#,##0.00}", details.PendingBills);
                billText += string.Format("\n\rNet Sales     : {0,26:#,##0.00}", details.CashReceipts);
                billText += string.Format("\n\rClosing Bal.  : {0,26:#,##0.00}", details.ClosingBalance);
                billText += string.Format("\n\rCash Dep.     : {0,26:#,##0.00}", details.CashDeposited);
                billText += DrawLine;
                billText += string.Format("\n\rOld Pending   : {0,26:#,##0.00}", details.OldPending);
                billText += string.Format("\n\rOld Receipts  : {0,26:#,##0.00}", details.OldReceipts);
                billText += string.Format("\n\rOld Voided    : {0,26:#,##0.00}", details.OldVoided);
                billText += DrawEqual;
                billText += "\n\r" + FormatText(details.Status, 42, Align.Centre);
                billText += DrawEqual;
                billText += string.Format("\n\rActive Cashiers : {0}", details.Cashiers);

                if (details.PendingString.Length > 0)
                    billText += details.PendingString;

                if (details.CcString.Length > 0)
                    billText += details.CcString;

                if (details.NcString.Length > 0)
                    billText += details.NcString;

                if (details.BtcString.Length > 0)
                    billText += details.BtcString;

                if (details.VoidsString.Length > 0)
                    billText += details.VoidsString;

                if (details.PaymentString.Length > 0)
                    billText += details.PaymentString;

                if (details.DiscountString.Length > 0)
                    billText += details.DiscountString;
                return PrintRaw(PrintLocationBI.BasePrinter, billText, "Closing");
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public static string FormatPrintNum(string inputString)
        {
            return inputString == "" ? "0.00" : FormatText(inputString, 24, Align.Right);
            //return FormatText(FormatNumber(InputString.Trim, 2, TriState.UseDefault, TriState.True, TriState.True), 24, False, Align.Right);
        }

        public static void PrintBill(int voucherID)
        {
            Voucher voucher;
            using (var bi = new VoucherBI(false))
                voucher = bi.Get(x => x.VoucherID == voucherID);
            PrintRaw(PrintLocationBI.BasePrinter, DesignBill(voucher), "Bill");
        }

        public static void PrintKot(int voucherID, int kotID)
        {
            var stopwatch = new Stopwatch();
            stopwatch.Start();
            Voucher voucher;
            using (var bi = new VoucherBI(false))
                voucher = bi.Get(x => x.VoucherID == voucherID);
            var dict = new Dictionary<PrintLocation, List<Inventory>>();
            var kot = voucher.Kots.SingleOrDefault(x => x.KotID == kotID);
            if (kot == null)
                return;

            foreach (var inventory in kot.Inventories)
            {
                var type = inventory.Product.ProductGroup.ProductGroupID;
                var printer = PrintLocationBI.KotPrinter(type);
                if (!dict.ContainsKey(printer))
                    dict.Add(printer, new List<Inventory>());
                dict[printer].Add(inventory);
            }
            stopwatch.Stop();
            Trace.TraceWarning("kot and printers built in {0} ms", stopwatch.ElapsedMilliseconds);
            stopwatch.Reset();
            foreach (var item in dict)
            {
                for (var i = 0; i < item.Key.Copies; i++)
                {
                    stopwatch.Start();
                    PrintRaw(item.Key, DesignKot(voucher, kot, item.Value, i), "KOT");
                    stopwatch.Stop();
                    Trace.TraceWarning("kot designed and printed in {0} ms", stopwatch.ElapsedMilliseconds);
                    stopwatch.Reset();
                }
            }
        }

        #region Print Cash Total

        public static Boolean PrintCash(Dictionary<int, int> amount, string user)
        {
            string printText;
            int total = 0;
            try
            {
                printText = FormatText(user, 42, Align.Centre);
                printText += DrawLine;
                printText += "\n\r" +
                             FormatText(string.Format("{0:dd-MMM-yyyy HH:mm:ss}", DateTime.Now), 42, Align.Centre);
                foreach (int key in amount.Keys.OrderByDescending(k => k))
                {
                    printText += CashLine(amount, key);
                    total += amount[key] * key;
                }
                printText += "\n\r" + DrawEqual;
                printText += string.Format("\n\r             Total = {0,10:#,##0}", total);
                printText += DrawLine;
                return PrintRaw(PrintLocationBI.BasePrinter, printText, "Closing/Opening for " + user);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public static Boolean PrintSale(string user, IList<SalesAnalysis> det, DateTime startDate, DateTime endDate)
        {
            var printText = FormatText(user, 42, Align.Centre);
            printText += DrawLine;
            printText += "\n\r" +
                         FormatText(string.Format("{0:dd-MMM-yyyy HH:mm:ss}", DateTime.Now), 42, Align.Centre);
            printText += "\n\r" +
                         FormatText(string.Format("{0:dd-MMM-yyyy} to {1:dd-MMM-yyyy}", startDate, endDate), 42, Align.Centre);
            printText += DrawLine;
            foreach (SalesAnalysis d in det)
            {
                printText += string.Format("\n\r {0,-22} {1,9:#,##0}", d.GroupType, d.Amount);
            }
            printText += DrawEqual;
            return PrintRaw(PrintLocationBI.BasePrinter, printText, "Sale Detail " + user);
        }

        public static Boolean PrintSale(string user, IList<SalesAnalysisDetail> list, DateTime startDate,
                                        DateTime endDate)
        {
            var printText = FormatText(user, 42, Align.Centre);
            printText += DrawLine;
            printText += "\n\r" +
                         FormatText(string.Format("{0:dd-MMM-yyyy HH:mm:ss}", DateTime.Now), 42, Align.Centre);
            printText += "\n\r" +
                         FormatText(string.Format("{0:dd-MMM-yyyy} to {1:dd-MMM-yyyy}", startDate, endDate), 42, Align.Centre);
            printText += DrawLine;
            foreach (var item in list)
            {
                printText += string.Format("\n\r{0,-22} {1,9:#,##0.00} {2,9:#,##0.00} {3,9:#,##0.00}", item.Product, item.Sale, item.NC, item.Staff);
            }
            printText += DrawEqual;
            return PrintRaw(PrintLocationBI.BasePrinter, printText, "Sale Detail " + user);
        }

        private static string CashLine(IDictionary<int, int> amount, int key)
        {
            return amount.ContainsKey(key) ? string.Format("\n\r{0,5:#,##0} x {1,10:#,##0} = {2,10:#,##0}", key, amount[key], key * amount[key]) : string.Empty;
        }

        #endregion
    }
}