Guardfile

guard :bundler do
  require 'guard/bundler'
  require 'guard/bundler/verify'
  helper = Guard::Bundler::Verify.new

  files = ['Gemfile']
  files += Dir['*.gemspec'] if files.any? { |f| helper.uses_gemspec?(f) }

  # Assume files are symlinked from somewhere
  files.each { |file| watch(helper.real_path(file)) }
end

group :red_green_refactor, halt_on_fail: true do
  guard :rspec, cmd: 'bundle exec rspec' do
    require 'guard/rspec/dsl'
    dsl = Guard::RSpec::Dsl.new(self)

    # Feel free to open issues for suggestions and improvements

    # RSpec files
    rspec = dsl.rspec
    watch(rspec.spec_helper) { rspec.spec_dir }
    watch(rspec.spec_support) { rspec.spec_dir }
    watch(rspec.spec_files)

    # Ruby files
    ruby = dsl.ruby
    dsl.watch_spec_files_for(ruby.lib_files)

    # Rails files
    rails = dsl.rails(view_extensions: %w[erb haml slim])
    dsl.watch_spec_files_for(rails.app_files)
    dsl.watch_spec_files_for(rails.views)

    watch(rails.controllers) do |m|
      [
        rspec.spec.call("routing/#{m[1]}_routing"),
        rspec.spec.call("controllers/#{m[1]}_controller"),
        rspec.spec.call("acceptance/#{m[1]}")
      ]
    end

    # Rails config changes
    watch(rails.spec_helper)     { rspec.spec_dir }
    watch(rails.routes)          { "#{rspec.spec_dir}/routing" }
    watch(rails.app_controller)  { "#{rspec.spec_dir}/controllers" }

    # Capybara features specs
    watch(rails.view_dirs)     { |m| rspec.spec.call("features/#{m[1]}") }
    watch(rails.layouts)       { |m| rspec.spec.call("features/#{m[1]}") }

    # Turnip features and steps
    watch(%r{^spec/acceptance/(.+)\.feature$})
    watch(%r{^spec/acceptance/steps/(.+)_steps\.rb$}) do |m|
      Dir[File.join("**/#{m[1]}.feature")][0] || 'spec/acceptance'
    end
  end

  guard :rubocop, all_on_start: false, cli: ['--format', 'clang', '--rails'], keep_failed: false do
    watch(/.+\.rb$/)
    watch(%r{(?:.+/)?\.rubocop\.yml$}) { |m| File.dirname(m[0]) }
  end
end

guard 'livereload' do
  extensions = {
    css: :css,
    scss: :css,
    sass: :css,
    js: :js,
    es6: :js,
    coffee: :js,
    html: :html,
    png: :png,
    gif: :gif,
    jpg: :jpg,
    jpeg: :jpeg
  }

  rails_view_exts = %w[erb haml slim]

  # file types LiveReload may optimize refresh for
  compiled_exts = extensions.values.uniq
  watch(%r{public/.+\.(#{compiled_exts * '|'})})

  extensions.each do |ext, type|
    watch(%r{
          (?:app|vendor)
          (?:/assets/\w+/(?<path>[^.]+) # path+base without extension
           (?<ext>\.#{ext})) # matching extension (must be first encountered)
          (?:\.\w+|$) # other extensions
          }x) do |m|
      path = m[1]
      "/assets/#{path}.#{type}"
    end
  end

  # file needing a full reload of the page anyway
  watch(%r{app/views/.+\.(#{rails_view_exts * '|'})$})
  watch(%r{app/helpers/.+\.rb})
  watch(%r{app/concepts/.+\.rb})
  watch(%r{app/concepts/.+\.(#{rails_view_exts * '|'})$})
  watch(%r{config/locales/.+\.yml})
end

# available options:
#   notify_on:
#     failure, success, both, none
guard :slimlint, notify_on: :both do
  watch(/^.+(\.html\.slim)$/)
end