#!/usr/bin/env ruby
# frozen_string_literal: true

require 'tty-config'
require 'tty-prompt'

def prompt
  @prompt ||= TTY::Prompt.new
end

def config
  unless @config
    @config ||= TTY::Config.new do |c|
      c.filename = '.rubocop'
      c.set(:inherit_gem, :'dvla-lint', value: '.rubocop.yml')
    end
  end
  @config
end

def create_file
  prompt_text = 'Which type of project are you building?'
  choices = [
    'Plain old Ruby files',
    'Functional tests with Cucumber',
    'Ruby on Rails project',
  ]
  choice = prompt.select(prompt_text, choices)
  config.set(:Rails, :Enabled, value: true) if choice == choices[2] # Rails
  config.write(force: true)
  puts 'Done'
end

def config_file_exists
  prompt_text = 'WARNING: you already have a rubocop configuration, ' \
                "do you want to overwrite it with the DVLA rubocop configuration?\n" \
                "(#{file_name})"
  create_file if prompt.yes?(prompt_text)
end

def config_file_new
  prompt_text = "Do you want to install the default DVLA rubocop configuration?\n" \
                "(#{file_name})"
  create_file if prompt.yes?(prompt_text)
end

def file_name
  File.join(Dir.pwd, '.rubocop.yml')
end

def create_config
  if File.exist?(file_name)
    config_file_exists
  else
    config_file_new
  end
end

if ARGV[0]&.strip.eql? 'init'
  create_config
else
  puts <<~USAGE
    Usage:
      dvla-lint init           # create or overwrite a default Rubocop configuration
  USAGE
end