#!/usr/bin/env ruby

require 'optparse'

require_relative '../lib/gemwarrior/game'
require_relative '../lib/gemwarrior/version'

GAME_NAME = 'Gem Warrior'

def parse_options_cli
  options = {
    :beast_mode     => false, 
    :debug_mode     => false, 
    :god_mode       => false, 
    :new_game       => false,
    :sound          => false,
    :use_wordnik    => false, 
    :extra_command  => nil
  }

  optparse = OptionParser.new do |opts|
    opts.on('-b', '--beast', 'Enable debug[beastmode]') do
      options[:beast_mode] = true
    end

    opts.on('-d', '--debug', 'Enable debug commands in-game') do
      options[:debug_mode] = true
    end

    opts.on('-g', '--god', 'Enable debug[godmode]') do
      options[:god_mode] = true
    end

    opts.on('-n', '--new', 'Immediately start a new game, skipping main menu') do
      options[:new_game] = true
    end
    
    opts.on('-s', '--sound', 'Enable sound (experimental)') do
      options[:sound] = true
    end

    opts.on('-v', '--version', 'Display version number and exit') do
      puts "#{GAME_NAME} v#{Gemwarrior::VERSION}"
      exit
    end

    opts.on('-w', '--wordnik', 'Enable Wordnik to generate more diverse, dynamic descriptors of entities') do
      options[:use_wordnik] = true
    end

    opts.on('-x', '--extra COMMAND', 'Run a command immediately upon beginning the game') do |xc|
      options[:extra_command] = xc.to_s
    end
  end

  optparse.parse!()

  return options
end

def print_error(error)
  case error
  when OptionParser::InvalidOption
    puts "#{$GAME_NAME}: illegal option #{error.args.join(' ')}"
  else
    puts "An unexpected error occurred while running #{$GAME_NAME}:"
    puts "  #{error}\n"
  end
end

def get_options_file_path
  "#{Dir.home}/.gemwarrior_options"
end

def read_options_file
  options = []
  if File.exist?(get_options_file_path)
    File.open(get_options_file_path).readlines.each do |line|
      options << line.chomp.split(':')
    end
    return options
  end
  nil
end

begin
  options = parse_options_cli

  options_file = read_options_file
  
  unless options_file.nil?
    sound_option = options_file[0][1].eql?('false') ? false : true
    wordnik_option = options_file[1][1].eql?('false') ? false : true
    
    options[:sound] = sound_option
    options[:use_wordnik] = wordnik_option
  end
  
  Gemwarrior::Game.new(options)
rescue => error
  print_error(error)
  exit(false)
end