#!/usr/bin/env ruby

require 'optparse'
require 'punctuation_name'

# -------------------------------------------------------------------------------- #
# Send Mssage to Slack                                                             #
# -------------------------------------------------------------------------------- #
# This function will take the input arguments and then send the message.           #
# -------------------------------------------------------------------------------- #

def punctuation_name(options)
    pn = PunctuationName.new

    if options[:dictionary]
        puts pn.name(options[:punctuation], options[:dictionary])
    else
        puts pn.name(options[:punctuation])
    end
end

# -------------------------------------------------------------------------------- #
# Process Arguments                                                                #
# -------------------------------------------------------------------------------- #
# This function will process the input from the command line and work out what it  #
# is that the user wants to see.                                                   #
#                                                                                  #
# This is the main processing function where all the processing logic is handled.  #
# -------------------------------------------------------------------------------- #

def process_arguments
    options = {}
    # Enforce the presence of
    mandatory = %I[punctuation]

    optparse = OptionParser.new do |opts|
        opts.banner = "Usage: #{File.basename($PROGRAM_NAME)}"

        opts.on('-h', '--help', 'Display this screen') do
            puts opts
            exit(1)
        end

        opts.on('-d', '--dictionary string', 'The dictionary to us') do |dictionary|
            options[:dictionary] = dictionary
        end
        opts.on('-p', '--punctuation string', 'The punctuation to lookup') do |punctuation|
            options[:punctuation] = punctuation
        end
    end

    begin
        optparse.parse!
        missing = mandatory.select { |param| options[param].nil? }
        raise OptionParser::MissingArgument.new(missing.join(', ')) unless missing.empty?
    rescue OptionParser::InvalidOption, OptionParser::MissingArgument => e
        puts e.to_s
        puts optparse
        exit(1)
    end

    punctuation_name(options)
end

# -------------------------------------------------------------------------------- #
# Main()                                                                           #
# -------------------------------------------------------------------------------- #
# The main function where all of the heavy lifting and script config is done.      #
# -------------------------------------------------------------------------------- #

def main
    process_arguments
end

main

# -------------------------------------------------------------------------------- #
# End of Script                                                                    #
# -------------------------------------------------------------------------------- #
# This is the end - nothing more to see here.                                      #
# -------------------------------------------------------------------------------- #