using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;
using GCHR.Model.Konto;

namespace GCHR.Model.Mandant
{
    internal class Skr51Hbv : IMandant
    {
        private const string Country = "DE";
        private const string Currency = "EUR";

        private static readonly XNamespace Tns = XNamespace.None;

        internal enum Hauptmarke { Citroen, Hyundai, Kia, Peugeot };
        internal Hauptmarke MandantHauptmarke = Hauptmarke.Kia;

        private XDocument _xmlDocument;
        private readonly XElement _accounts = new XElement(Tns + "RecordList");
        private readonly HashSet<string> _makes = new HashSet<string>();
        private readonly HashSet<string> _sites = new HashSet<string>();
        private readonly HashSet<string> _departments = new HashSet<string>();

        private readonly Konfiguration _config = Konfiguration.GetInstance();

        public bool BalanceDatei
        {
            get { return true; }
        }

        public bool AccountsDatei
        {
            get { return false; }
        }

        public string BalanceHeader
        {
            get
            {
                return String.Empty;
            }
        }

        private IEnumerable<XElement> MakeList
        {
            get
            {
                return (from make in _makes
                        select new XElement("MakeListEntry", new XElement("Make", make), new XElement("MakeCode", make == "01" ? GetMakeNumber() : "0000")));
            }
        }

        private string GetMakeNumber()
        {
            switch (MandantHauptmarke)
            {
                case Hauptmarke.Citroen:
                    return "3001";
                case Hauptmarke.Hyundai:
                    return "8252";
                case Hauptmarke.Kia:
                    return "8253";
                case Hauptmarke.Peugeot:
                    return "3003";

            }
            return "0000";
        }

        private IEnumerable<XElement> BmCodeList
        {
            get
            {
                return (from dept in _departments
                        select
                            new XElement("BmCodeListEntry", new XElement("Make", dept.Split(new[] {'-'})[0]),
                                         new XElement("Site", dept.Split(new[] {'-'})[1]),
                                         new XElement("BmCode", _config.HaendlernummerBmCode)));
            }
        }

        public string BalanceFooter
        {
            get
            {
                _xmlDocument = new XDocument();
                _xmlDocument.Add(new XElement(Tns + "HbvData",
                                              new XElement(Tns + "Header",
                                                           new XElement(Tns + "Country", Country),
                                                           new XElement(Tns + "MainBmCode", _config.HaendlernummerBmCode),
                                                           new XElement(Tns + "Month", _config.AktuellePeriode.Monat),
                                                           new XElement(Tns + "Year", _config.AktuellePeriode.Jahr),
                                                           new XElement(Tns + "Currency", Currency),
                                                           new XElement(Tns + "NumberOfMakes", _makes.Count),
                                                           new XElement(Tns + "NumberOfSites", _sites.Count),
                                                           new XElement(Tns + "ExtractionDate", DateTime.Now.ToShortDateString()),
                                                           new XElement(Tns + "ExtractionTime", string.Format("{0:T}", DateTime.Now)),
                                                           new XElement(Tns + "BeginFiscalYear", _config.Geschaeftsjahr)
                                                  ),
                                              new XElement(Tns + "MakeList", MakeList),
                                              new XElement(Tns + "BmCodeList", BmCodeList),
                                              _accounts
                                     ));
                
                return _xmlDocument.ToString();
            }
        }

        public string BalanceBody(HaendlerKonto konto)
        {
            // Konto: Account-Make-Site-Origin-SalesChannel-CostCarrier
            var split = konto.Kontonummer.Split(new[] {'-'});  
            var make = (split[1] == "??") ? konto.Marke : split[1];
            if (!_makes.Contains(make))
            {
                _makes.Add(make);
            }
            var site = (split[2] == "??") ? konto.Betrieb : split[2];
            if (!_sites.Contains(site))
            {
                _sites.Add(site);
            }
            var department = make + "-" + site;
            if (!_departments.Contains(department))
            {
                _departments.Add(department);
            }

            _accounts.Add(new XElement(Tns + "Record",
                                       new XElement(Tns + "Account", split[0].PadLeft(4, '0')),
                                       new XElement(Tns + "Make", make.PadLeft(2, '0')),
                                       new XElement(Tns + "Site", site.PadLeft(2, '0')),
                                       new XElement(Tns + "Origin", split[3].PadLeft(2, '0')),
                                       new XElement(Tns + "SalesChannel", split[4].PadLeft(2, '0')),
                                       new XElement(Tns + "CostCarrier", split[5].PadLeft(2, '0')),
                                       new XElement(Tns + "CostAccountingString", make.PadLeft(2, '0') + site.PadLeft(2, '0') + split[3].PadLeft(2, '0') + split[4].PadLeft(2, '0') + split[5].PadLeft(2, '0')),
                                       new XElement(Tns + "Decimals", "2"),
                                       new XElement(Tns + "OpeningBalance", string.Format("{0:0.}", konto.Eroeffnungsbilanz * 100)),
                                       new XElement(Tns + "Period01", MonatFormat(konto, 1)),
                                       new XElement(Tns + "Period02", MonatFormat(konto, 2)),
                                       new XElement(Tns + "Period03", MonatFormat(konto, 3)),
                                       new XElement(Tns + "Period04", MonatFormat(konto, 4)),
                                       new XElement(Tns + "Period05", MonatFormat(konto, 5)),
                                       new XElement(Tns + "Period06", MonatFormat(konto, 6)),
                                       new XElement(Tns + "Period07", MonatFormat(konto, 7)),
                                       new XElement(Tns + "Period08", MonatFormat(konto, 8)),
                                       new XElement(Tns + "Period09", MonatFormat(konto, 9)),
                                       new XElement(Tns + "Period10", MonatFormat(konto, 10)),
                                       new XElement(Tns + "Period11", MonatFormat(konto, 11)),
                                       new XElement(Tns + "Period12", MonatFormat(konto, 12)),
                                       new XElement(Tns + "CumulatedYear", string.Format("{0:0.}", konto.Summe * 100))
                              ));
            return String.Empty;
        }

        private static string MonatFormat(HaendlerKonto konto, int monat)
        {
            return string.Format("{0:0.}", konto.Monatssumme(monat)*100);
        }

        public string AccountsHeader
        {
            get { return String.Empty; }
        }

        public string AccountsBody(HaendlerKonto kto)
        {
            return String.Empty;
        }

        public string AccountsFooter
        {
            get { return String.Empty; }
        }

        public string KontonummerFormatieren(HaendlerKonto konto)
        {
            // Konto: Account-Make-Site-Origin-SalesChannel-CostCarrier
            var split = konto.Kontonummer.Split(new[] { '-' });
            if (split.Count() < 6) return konto.ToString();
            var make = (split[1] == "??") ? konto.Marke : split[1];
            var site = (split[2] == "??") ? konto.Betrieb : split[2];
            return split[0].PadLeft(4, '0') + "-" + make.PadLeft(2, '0') + site.PadLeft(2, '0') + split[3].PadLeft(2, '0') + split[4].PadLeft(2, '0') + split[5].PadLeft(2, '0');
        }

        public Encoding Encoding
        {
            get { return Encoding.Default; }
        }
    }
}