class DigitsParser

# File lib/supporting_classes/digits_parser.rb, line 7
def initialize
    @satuans = ["nol", "satu", "dua", "tiga", "empat", "lima", "enam", "tujuh", "delapan", "sembilan"]    
    @adjective_sayings = {puluh: "puluh", belas: "belas", ratusan: "ratus", ribuan: "ribu", jutaan: "juta", milyaran: "milyar"}
    @anomalies = {a10: "sepuluh", a11: "sebelas", a100:"seratus", a1rb: "seribu", a1jt: "sejuta", a1M:"semilyar"}
end

# File lib/supporting_classes/digits_parser.rb, line 73
def get_digit_adjectives(number, adjectives)
    adjective_index = 0

    digit_adjectives = []

    number_s = number.to_s

    backward_index = number_s.length - 1
    while backward_index >= 0

        digit_s = number_s[backward_index]
        digit_adjectives.push [adjectives[adjective_index], digit_s]

        adjective_index += 1

        backward_index -= 1
    end         

    digit_adjectives        
end

# File lib/supporting_classes/digits_parser.rb, line 17
def handle_digit(i, current_digit, digit_adjectives, results)
    front_digit = digit_adjectives[i - 1][1]
    if front_digit == "0"
        if current_digit != "0"
            satuan = @satuans[current_digit.to_i]
            results.push satuan
        end
    else
        parse_belasan front_digit: front_digit, current_digit: current_digit, destination: results
    end        
end

# File lib/supporting_classes/digits_parser.rb, line 29
def handle_hundreds(current_digit, results)
    if current_digit == "1"
        results.push @anomalies[:a100]
    else
        if current_digit != "0"
            ratusan = @satuans[current_digit.to_i]
            results.push "#{ratusan} #{@adjective_sayings[:ratusan]}"
        end
    end    
end

# File lib/supporting_classes/digits_parser.rb, line 40
def handle_thousands(i, current_digit, current_adjective, digit_adjectives, results)
    has_puluhan = i > 0
    if !has_puluhan
        if current_digit == "1"
            if current_adjective == :ribuan
                results.push "#{@anomalies[:a1rb]}"
            else
                results.push "#{@anomalies[:a1jt]}"
            end
        else
            ribuan = @satuans[current_digit.to_i]
            results.push "#{ribuan} #{@adjective_sayings[current_adjective]}"
        end  
    else
        front_digit = digit_adjectives[i - 1][1]
        if front_digit == "0"
            if current_digit != "0"
                satuan = satuans[current_digit.to_i]
                results.push "#{satuan}"
                results.push @adjective_sayings[current_adjective]
            else
                ratusan_val = digit_adjectives[i - 2][1] 
                if ratusan_val != "0"                                    
                    results.push @adjective_sayings[current_adjective]
                end
            end
        else
            parse_belasan front_digit: front_digit, current_digit: current_digit, destination: results
            results.push @adjective_sayings[current_adjective]
        end                                        
    end                          
end

# File lib/supporting_classes/digits_parser.rb, line 94
def parse(digit_adjectives, results)
    digit_adjectives.each_with_index do |digit_adjective, i|

        current_adjective = digit_adjective[0]
        current_digit = digit_adjective[1]

        if current_adjective == :satuan
            handle_digit i, current_digit, digit_adjectives, results
        end 

        if current_adjective == :ratusan or current_adjective == :ratusan_ribu or 
            current_adjective == :ratusan_juta or current_adjective == :ratusan_milyar

            handle_hundreds current_digit, results

        end

        if current_adjective == :ribuan or current_adjective == :jutaan or current_adjective == :milyaran
            handle_thousands i, current_digit, current_adjective, digit_adjectives, results
        end
    end
    
end

# File lib/supporting_classes/digits_parser.rb, line 13
def parse_belasan(param)        
    @belasan_parser.parse param
end

# File lib/supporting_classes/digits_parser.rb, line 118
def say(number)
    adjectives = [:satuan, :puluhan, :ratusan, :ribuan, :puluhan_ribu, :ratusan_ribu, :jutaan, :puluhan_juta, :ratusan_juta, :milyaran, :puluhan_milyar, :ratusan_milyar]

    
    if number < 10
        return satuans[number]
    else # 10, 11, 19, 20...99, 100
        results = []

        digit_adjectives = get_digit_adjectives number, adjectives

        digit_adjectives = digit_adjectives.reverse

        parse digit_adjectives, results

        return results.join " "
    end

end