Guardfile

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("features/#{m[1]}_controller"),
        rspec.spec.call("requests/#{m[1]}"),
        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]}") }

    # Run request specs when changing JSON schema definitions
    # This is likely not the right way to test serializers but it works for now
    watch(%r{^spec/support/api/schemas/_?(.+)\.json$}) do |m|
      rspec.spec.call("requests/#{m[1]}")
    end

    # 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

  # Rubocop!
  # Most configuration comes from .rubocop.yml and should be configured
  # there rather than modifying the CLI
  guard :rubocop, all_on_start: false, cli: ['--format', 'clang'] do
    watch(/.+\.rb$/)
    watch(%r{(?:.+/)?\.rubocop\.yml$}) { |m| File.dirname(m[0]) }
  end

  # Brakeman does security checks on the app code. Checking for things like
  # possible code injection, SQL injection, not filtering model attributes,
  # info leakage, bad usage of default routes...
  guard 'brakeman', run_on_start: true do
    watch(%r{^app/.+\.(erb|haml|rhtml|slim|rb)$})
    watch(%r{^config/.+\.rb$})
    watch(%r{^lib/.+\.rb$})
    watch('Gemfile')
  end
end

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

# Run just the livereload monitor with: `guard -P livereload`
guard :livereload do
  watch(%r{app/views/.+\.(erb|haml|slim)$})
  watch(%r{app/helpers/.+\.rb})
  watch(%r{public/.+\.(css|js|html)})
  watch(%r{config/locales/.+\.yml})
  # Rails Assets Pipeline
  watch(%r{(app|vendor)(/assets/\w+/(.+\.(css|js|html|png|jpg))).*}) { |m| "/assets/#{m[3]}" }
  watch(%r{(app|vendor)(/assets/\w+/(.+)\.(scss))}) { |m| "/assets/#{m[3]}.css" }
end