using System;
using System.Text;
using System.Collections;
using System.Collections.Generic;

namespace FastReport.Functions
{
    internal class NumToWordsNl : NumToWordsBase
    {
        private static Dictionary<string, CurrencyInfo> currencyList;

        private static string[] fixedWords =
        {
      "", "een", "twee", "drie", "vier", "vijf", "zes",
      "zeven", "acht", "negen", "tien", "elf",
      "twaalf", "dertien", "veertien", "vijftien",
      "zestien", "zeventien", "achttien", "negentien"
    };

        private static string[] tens =
        {
      "", "tien", "twintig", "dertig", "veertig", "vijftig",
      "zestig", "zeventig", "tachtig", "negentig"
    };

        private static string[] hunds =
        {
      "", "honderd", "tweehonderd", "driehonderd", "vierhonderd",
      "vijfhonderd", "zeshonderd", "zevenhonderd", "achthonderd", "negenhonderd"
    };

        private static WordInfo thousands = new WordInfo("duizend");
        private static WordInfo millions = new WordInfo("miljoen");
        private static WordInfo milliards = new WordInfo("miljard");
        private static WordInfo trillions = new WordInfo("trillion");

        protected override string Str1000(long value, WordInfo info, int counter)
        {
            long val = value % 1000;
            if (val == 0)
                return "";

            StringBuilder r = new StringBuilder();
            // add hundred
            string hund = GetHund(info.male, val);
            if (hund != "")
                r.Append(hund);

            // decide whether to use the 100-10 separator or not
            string sep100_10 = Get100_10Separator();
            if (value < 1000 && hund == "")
                sep100_10 = "";

            val = val % 100;
            if (val < GetFixedWordsCount())
            {
                // val is less than fixed words count (usually 20), get fixed words
                string frac20 = GetFixedWords(info.male, val);
                if (frac20 != "")
                    r.Append(sep100_10 + frac20);
            }
            else
            {
                // val is greater than fixed words count (usually 20), get tens separately
                string ten = GetTen(info.male, val / 10);
                string frac10 = GetFixedWords(info.male, val % 10);

                string sep10_1 = "en";
                if (val % 10 == 2 || val % 10 == 3)
                    sep10_1 = "ën";
                // decide whether to use 10-1 separator or not
                if (ten != "" && frac10 != "")
                    r.Append(sep100_10 + frac10 + sep10_1 + ten);
                else if (ten != "")
                    r.Append(sep100_10 + ten);
                else if (frac10 != "")
                    r.Append(sep100_10 + frac10);
            }

            // add currency/group word
            if (counter != 2)
                r.Append(" ");
            r.Append(Case(value, info));

            // make the result starting with letter and ending with space
            if (r.Length != 0)
                r.Append(" ");
            return r.ToString().TrimStart(' ');
        }

        protected override string GetFixedWords(bool male, long value)
        {
            return fixedWords[value];
        }

        protected override string GetTen(bool male, long value)
        {
            return tens[value];
        }

        protected override string GetHund(bool male, long value)
        {
            return hunds[value / 100];
        }

        protected override WordInfo GetThousands()
        {
            return thousands;
        }

        protected override WordInfo GetMillions()
        {
            return millions;
        }

        protected override WordInfo GetMilliards()
        {
            return milliards;
        }

        protected override WordInfo GetTrillions()
        {
            return trillions;
        }

        protected override CurrencyInfo GetCurrency(string currencyName)
        {
            currencyName = currencyName.ToUpper();
            if (currencyName == "CAD")
                currencyName = "USD";
            return currencyList[currencyName];
        }

        protected override string GetZero()
        {
            return "nul";
        }

        protected override string GetMinus()
        {
            return "min";
        }

        protected override string GetDecimalSeparator()
        {
            return "en ";
        }

        static NumToWordsNl()
        {
            currencyList = new Dictionary<string, CurrencyInfo>();
            currencyList.Add("USD", new CurrencyInfo(
              new WordInfo("dollar", "dollar"),
              new WordInfo("cent", "cent")));
            currencyList.Add("EUR", new CurrencyInfo(
              new WordInfo("euro", "euro"),
              new WordInfo("cent", "cent")));
            currencyList.Add("GBP", new CurrencyInfo(
              new WordInfo("pound", "pound"),
              new WordInfo("penny", "penny")));
        }
    }
}