#!/usr/bin/env ruby

require 'rubygems' unless ENV['NO_RUBYGEMS']

Dir[File.join(File.dirname(__FILE__), '..', 'generators', '**', '*_generator.rb')].each{ |f| require File.expand_path(f) }

def check_arguments
  expected_option_list = [
    'install --cucumber',
    'install --rspec',
    'install --cucumber --rspec',
    'install --rspec --cucumber',
    '--version',
    '--help'
  ]

  actual_options = ARGV.map(&:downcase).join(' ')
  unless expected_option_list.include?(actual_options)
    puts "ERROR: incorrect options. Please, see help for details"
    show_help
    exit 1
  end
end

def parse_options
  first_option = ARGV.shift.to_s.downcase
  case first_option
    when 'install' then execute_generator(ARGV.map(&:downcase))
    when '--version' then show_version
    when '--help' then show_help
    else
     puts "ERROR: incorrect first argument ('#{first_option}')"
     show_help
     exit 1
  end
end

private

def show_help
  puts %{
howitzer [command {--cucumber, --rspec}] | {options}

Commands are ...
    install                  Generate test framework units:
          --rspec                add RSpec integration with framework
          --cucumber             add Cucumber integration with framework
Options are ...
    --help                   Display this help message.
    --version                Display the program version.
  }
end

def show_version
  require_relative "../lib/howitzer/version"
  puts "Version: #{Howitzer::VERSION}"
  exit 0
end

def execute_generator(options)
  if %w[--cucumber --rspec].include?(options.first)
    Howitzer::ConfigGenerator.new
    Howitzer::PagesGenerator.new
    Howitzer::TasksGenerator.new
    Howitzer::EmailsGenerator.new
    Howitzer::RootGenerator.new

    options.each do |option|
      case option
        when '--cucumber' then Howitzer::CucumberGenerator.new
        when '--rspec' then Howitzer::RspecGenerator.new
        else nil
      end
    end
  else
    if options.empty?
      puts "ERROR: No option specified for install command."
    else
      puts "ERROR: Unknown '#{options.first}' option specified."
    end
    show_help
    exit 1
  end
end

unless ENV['TEST_MODE']
  check_arguments
  parse_options
end