require 'require_all'
require 'faraday'
require 'uri'

class LearnCreate
  def initialize
    puts 'Note: You must have write access to the learn-co-curriculum org on GitHub to use this tool'

    # Checks to see if chosen name already exists as a repository
    @repo_name = ''

    loop do
      puts 'What is the name of the repository you would like to create?'
      @repo_name = gets.chomp
      url = 'https://api.github.com/repos/learn-co-curriculum/' + @repo_name
      encoded_url = URI.encode(url).slice(0, url.length)

      # Will hit rate limint on github is used too much
      check_existing = Faraday.get URI.parse(encoded_url)

      break if check_existing.body.include? '"Not Found"'

      puts 'A repository with that name already exists:'
      puts 'https://github.com/learn-co-curriculum/' + @repo_name
      puts ''
    end

    readme = ''
    loop do
      puts 'Is this a Readme? (y/n)'
      readme = gets.chomp.downcase
      break if readme =~ /^(y|n)/
      puts 'Please enter yes or no'
      puts ''
    end

    # If not a readme, create language specific lab, otherwise create a standard readme
    if readme =~ /^n$/

      language = choose_language

      case language
      when /^ru/
        create_local_lesson('lab', 'Ruby')

      when /^j/
        create_local_lesson('lab', 'JavaScript')

      when /^re/
        create_local_lesson('lab', 'React')

      else
        puts 'I am sorry, something went wrong, please start over'

      end

    else

      create_local_lesson('readme')

    end

    create_new_repo
  end

  private

  def choose_language
    language = ''
    loop do
      puts 'What lab template would you like to use? (Ruby/JavaScript/React)'
      language = gets.chomp.downcase
      break if language =~ /^(ru|j|re)/
      puts 'Please enter Ruby, JavaScript or React, or at minimum, the first two letters:'
      puts ''
    end
    language
  end

  def create_local_lesson(type = 'readme', language = nil)
    puts "Creating #{language} #{type}"
    gem_template_location = File.dirname(__FILE__)
    template_folder = if !language
                        "/templates/#{type}_template"
                      else
                        "/templates/#{language}_#{type}_template"
                      end
    template_path = File.expand_path(gem_template_location) + template_folder
    copy_template(template_path)
  end

  def copy_template(template_path)
    # copies a template folder from the learn_create gem to a subfolder of the current directory

    cmd = "rsync -aP #{template_path} #{Dir.pwd}/#{@repo_name}"
    `#{cmd}`
  end

  def git_init
    'git init'
  end

  def git_add
    'git add .'
  end

  def git_commit
    'git commit -m "automated initial commit"'
  end

  def git_create
    "hub create learn-co-curriculum/#{@repo_name}"
  end

  def git_set_remote
    "git remote set-url origin https://github.com/learn-co-curriculum/#{@repo_name}"
  end

  def git_push
    'git push -u origin master'
  end

  def create_new_repo
    # must be in a single chain. 'cd' doesn't work the way it would in the shell
    cmd = "cd #{@repo_name} && #{git_init} && #{git_add} && #{git_commit} && #{git_create} && #{git_set_remote} && #{git_push} && cd .."
    `#{cmd}`
  end
end