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

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

        private static string[] fixedWords =
        {
      "", "un", "deux", "trois", "quatre", "cinq", "six",
      "sept", "huit", "neuf", "dix", "onze",
      "douze", "treize", "quatorze", "quinze",
      "seize", "dix-sept", "dix-huit", "dix-neuf"
    };

        private static string[] fixedWords71to79 =
        {
      "soixante et onze", "soixante-douze", "soixante-treize", "soixante-quatorze",
      "soixante-quinze", "soixante-seize", "soixante-dix-sept", "soixante-dix-huit", "soixante-dix-neuf"
    };

        private static string[] fixedWords91to99 =
        {
      "quatre-vingt-onze", "quatre-vingt-douze", "quatre-vingt-treize", "quatre-vingt-quatorze",
      "quatre-vingt-quinze", "quatre-vingt-seize", "quatre-vingt-dix-sept", "quatre-vingt-dix-huit", "quatre-vingt-dix-neuf"
    };

        private static string[] tens =
        {
      "", "dix", "vingt", "trente", "quarante", "cinquante",
      "soixante", "soixante-dix", "quatre-vingt", "quatre-vingt-dix"
    };

        private static string[] hunds =
        {
      "", "cent", "deux cent", "trois cent", "quatre cent",
      "cinq cent", "six cent", "sept cent", "huit cent", "neuf cent"
    };

        private static WordInfo thousands = new WordInfo(false, "mille", "mille", "mille");
        private static WordInfo millions = new WordInfo(false, "million", "millions", "millions");
        private static WordInfo milliards = new WordInfo(false, "milliard", "milliards", "milliards");
        private static WordInfo trillions = new WordInfo(false, "billion", "billions", "billions");

        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 < 20)
            {
                r.Append(sep100_10 + GetFixedWords(info.male, val));
            }
            else if (val > 70 && val < 80)
            {
                r.Append(sep100_10 + fixedWords71to79[val - 71]);
            }
            else if (val > 90 && val < 100)
            {
                r.Append(sep100_10 + fixedWords91to99[val - 91]);
            }
            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);

                // decide whether to use 10-1 separator or not
                if (ten != "" && frac10 != "")
                {
                    string sep10_1 = "-";
                    if (val % 10 == 1)
                        if (val / 10 != 8)
                            sep10_1 = " et ";
                    r.Append(sep100_10 + ten + sep10_1 + frac10);
                }
                else if (ten != "")
                    r.Append(sep100_10 + ten);
                else if (frac10 != "")
                    r.Append(sep100_10 + frac10);
            }

            // special cases
            if (counter == 1) // the final
            {
                // 80 ends with 's' in case it's the final word
                if (val == 80)
                    r.Append("s");
                // 100's ends with 's' in case it's the final word
                if (val == 0 && value % 1000 > 100)
                    r.Append("s");
            }

            // add currency/group word
            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)
        {
            string result = fixedWords[value];
            if (!male)
            {
                if (value == 1)
                    return "une";
            }
            return result;
        }

        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 "zéro";
        }

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

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

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