# Template which configures a generic Rails app with Shoulda, Factory Girl,
# HAML, etc while commiting each step into git.
#
# Make sure you have Rails 2.3rc1 or greater installed and run:
# rails -d mysql -m http://gist.github.com/raw/57458/06345c42a92048e699af3140ccd28bbcd8915bc5/archfear.rb my_app

# Helper methods

def environment(data = nil, options = {}, &block)
  options = { :sentinel => 'Rails::Initializer.run do |config|' }.merge(options)

  data = block.call if !data && block_given?

  in_root do
    if options[:env].nil?
      gsub_file 'config/environment.rb', /(#{Regexp.escape(options[:sentinel])})/mi do |match|
        "#{match}\n  " << data
      end
    else
      Array.wrap(options[:env]).each do|env|
        append_file "config/environments/#{env}.rb", "\n#{data}"
      end
    end
  end
end

# Modified version of the "gem" method which places the "config.gem..." lines
# after the examples in config/environment.rb.
def gem(name, options = {})
  log 'gem', name
  env = options.delete(:env)

  gems_code = "config.gem '#{name}'"

  if options.any?
    opts = options.inject([]) {|result, h| result << [":#{h[0]} => '#{h[1]}'"] }.sort.join(", ")
    gems_code << ", #{opts}"
  end

  environment gems_code, :env => env, :sentinel => '  # config.gem "aws-s3", :lib => "aws/s3"'
end

# adds .gitignore files to any empty child directories so that
# they can be tracked by git
def touch_gitignore(path = '.')
  Dir[File.join(File.expand_path(path), '**')].each do |file|
    if File.directory?(file) && File.basename(file) != 'tmp'
      touch_gitignore(file)
      if Dir[File.join(file, '*')].empty?
        run "touch #{File.join(file, '.gitignore')}"
      end
    end
  end  
end


# Setup basic Rails app

SUDO_CMD = yes?("Does gem installation require sudo on your system? (yes/no)") ? "sudo" : ""

run "rm public/index.html"
run "rm public/favicon.ico"
run "rm public/images/*"
run "rm -rf test/fixtures"
run "rm README"
file 'README.markdown', <<-TEXT
README
======

This is the app README.
TEXT
run "cp config/database.yml config/database.yml.example"

file ".gitignore", <<-TEXT
*.DS_Store
/log/*.log
/tmp/**/*
/db/schema.rb
/db/*.sqlite3
/doc/api
/doc/plugins
/doc/app
/config/database.yml
/coverage
/public/stylesheets/screen.css
/public/system
*.swp
TEXT

touch_gitignore
git :init
git :add => "."
git :commit => "-a -m 'Created empty Rails app'"

rake "rails:freeze:gems"
git :add => "vendor/rails"
git :commit => "-a -m 'Froze Rails gems'"


# Disable default routes

gsub_file 'config/routes.rb', /^  map\.connect/ do |match|
  '  # map.connect'
end
git :add => "."
git :commit => "-a -m 'Comment out default routes so that we have to explicitly define any routes that don''t map to a resource.'"


# Return 404 for routing errors

gsub_file 'app/controllers/application_controller.rb', /^end$/ do |match|
  <<-CODE

  unless RAILS_ENV == 'development'
    rescue_from ActiveRecord::RecordNotFound, :with => :render_404
    rescue_from ActionController::UnknownController, :with => :render_404
    rescue_from ActionController::UnknownAction, :with => :render_404
    rescue_from ActionController::RoutingError, :with => :render_404
  end

  def render_403
    respond_to do |type|
      type.html { render :file => "\#{RAILS_ROOT}/public/403.html", :status => 403 }
      type.xml  { render :xml => '<not_found></not_found>', :status => 403 }
      type.all  { render :nothing => true, :status => 403 }
    end
  end

  def render_404
    respond_to do |type|
      type.html { render :file => "\#{RAILS_ROOT}/public/404.html", :status => 404 }
      type.xml  { render :xml => '<not_found></not_found>', :status => 404 }
      type.all  { render :nothing => true, :status => 404 }
    end
  end
end
  CODE
end
git :add => "."
git :commit => "-a -m 'Render 404 page when there are routing errors in production'"


# Setup testing framework - mocha, factory girl, shoulda

# gem "mocha", :env => :test
# run "#{SUDO_CMD} gem install mocha"
# rake "gems:unpack GEM='mocha'"
# git :add => "."
# git :commit => "-a -m 'Installed Mocha gem'"

gem "thoughtbot-factory_girl", :lib => "factory_girl", :source => "http://gems.github.com", 
  :env => :test
run "#{SUDO_CMD} gem install thoughtbot-factory_girl --source http://gems.github.com"
run "rake gems:unpack GEM=thoughtbot-factory_girl RAILS_ENV=test"
file "test/factories.rb", ''
git :add => "."
git :commit => "-a -m 'Installed Factory Girl gem'"

run "#{SUDO_CMD} gem install ruby-prof" #Required by rake shouda:list

gem "thoughtbot-shoulda", :lib => "shoulda", :source => "http://gems.github.com", 
  :env => :test
run "#{SUDO_CMD} gem install thoughtbot-shoulda --source http://gems.github.com"
run "rake gems:unpack GEM=thoughtbot-shoulda RAILS_ENV=test"
append_file "Rakefile", 'Dir["#{RAILS_ROOT}/vendor/gems/thoughtbot-shoulda-*/lib/shoulda/tasks/**/*.rake"].sort.each { |ext| load ext }' + "\n"
git :add => "."
git :commit => "-a -m 'Installed Shoulda gem'"
file 'test/shoulda_macros/html_validation.rb', <<-RUBY
class Test::Unit::TestCase
  # Shoulda macro that ensures output is well-formed HTML.
  def self.should_be_well_formed
    should 'be well formed' do
      assert_select 'html', true
    end
  end
end
RUBY
git :add => "test/shoulda_macros"
git :commit => "-a -m 'Added should_be_well_formed shoulda macro'"

gsub_file 'config/initializers/backtrace_silencers.rb', /^#{Regexp.escape('# Rails.backtrace_cleaner.add_silencer { |line| line =~ /my_noisy_library/ }')}$/ do |match|
<<-RUBY
#{match}
Rails.backtrace_cleaner.add_silencer do |line| 
  %w( shoulda factory_girl ).any? { |dir| line.include?(dir) }
end
RUBY
end

run "#{SUDO_CMD} gem install redgreen" #Required by rake shouda:list
environment "config.gem 'redgreen' if ENV['TM_FILENAME'].nil?\n", :env => :test
run "rake gems:unpack GEM=redgreen RAILS_ENV=test"
git :add => "."
git :commit => "-a -m 'Installed redgreen gem for colorized test output'"

# Install rcov and rcov rake tasks

run "#{SUDO_CMD} gem install mergulhao-rcov" # Relevance's fork of rcov
plugin "rcov_plugin", :git => 'git://github.com/commondream/rcov_plugin.git'
git :add => "."
git :commit => "-a -m 'Installed rcov rake tasks plugin'"


# Setup HAML/SASS templates
gsub_file 'app/helpers/application_helper.rb', /^end$/ do |match|
'  def body_class
    "#{controller.controller_name} #{controller.controller_name}-#{controller.action_name}"
  end
end'
end
git :add => "app/helpers/application_helper.rb"
git :commit => "-a -m 'Added body_class helper'"

gem "haml"
run "#{SUDO_CMD} gem install haml"
rake "gems:unpack GEM='haml'"
run 'haml --rails .'
initializer 'sass.rb', <<-CODE
# Format CSS in standard, human-readable style.
Sass::Plugin.options[:style] = :expanded

# Override default template location of public/stylesheets/sass to something outside of
# public so the raw templates won't be served up by the web server
Sass::Plugin.options[:template_location] = RAILS_ROOT + "/app/views/stylesheets"
CODE
rake ""
git :add => "."
git :commit => "-a -m 'Installed HAML gem and plugin'"

file 'app/views/layouts/application.html.haml', <<-HAML
!!! Strict
%html{ "xml:lang" => "en", :lang => "en-us", :xmlns => "http://www.w3.org/1999/xhtml" }
  %head
    %meta{ :content => "text/html; charset=utf-8", "http-equiv" => "content-type" }
    %title CHANGEME
    = stylesheet_link_tag 'screen', :media => 'all', :cache => true
  %body{ :class => body_class }
    = yield
HAML
file 'app/views/stylesheets/screen.sass', <<-SASS
// Sitewide Stylesheet
SASS
git :add => "."
git :commit => "-a -m 'Added basic layout and stylesheet.'"


# Create DB schemas

if yes?("Create DB schemas? (yes/no)")
  rake "db:create"
  rake "db:create", :env => 'test'
  rake "db:migrate"
end