app_root = ENV['APP_ROOT'] || RAILS_ROOT
plugin_prefix = ENV["BLUE_RIDGE_PREFIX"] || "#{app_root}/vendor/plugins/blue-ridge"
rhino_command = "java -Dblue.ridge.prefix=\"#{plugin_prefix}\" -jar #{plugin_prefix}/lib/js.jar -w -debug"
test_runner_command = "#{rhino_command} #{plugin_prefix}/lib/test_runner.js"

def find_base_dir
  target_dirs = %w[test/javascript spec/javascripts examples/javascripts test spec examples]
  base_dir = target_dirs.find {|d| Dir["#{d}/spec_helper.js"].first }
  raise "Could not find JavaScript test/spec directory.\nNone of the following directories existed and contained spec_helper.js: #{target_dirs.join(", ")}.\nMaybe you need to call './script/generate blue_ridge'?" unless base_dir
  base_dir
end

def fixture_file_for_spec(spec)
  fixture_name = File.basename(spec).gsub(/_spec.js/, ".html")
  File.join(File.dirname(spec), "fixtures", fixture_name)
end

# Support Test::Unit & Test/Spec style
namespace :test do
  desc "Runs all the JavaScript tests and outputs the results"
  task :javascripts do
    require "fileutils"
    require "erb"
    Dir.chdir(find_base_dir) do
      all_fine = true
      if ENV["TEST"]
        all_fine = false unless system("#{test_runner_command} #{ENV["TEST"]}_spec.js")
      else
        Dir.glob("**/*_spec.js").each do |file|
          fixture_file = fixture_file_for_spec(file)
          unless File.exists?(fixture_file)
            FileUtils.mkdir_p(File.dirname(fixture_file))
            File.open(fixture_file, "w") do |f|
              template = "#{plugin_prefix}/blue_ridge_generators/javascript_spec/templates/fixture.html.erb"
              class_name_without_spec = file.gsub(/_spec.js/,'').classify
              f << ERB.new(File.read(template), nil, '-').result(binding)
            end
          end
          all_fine = false unless system("#{test_runner_command} #{file}")
        end
      end
      raise "JavaScript test failures" unless all_fine
    end
  end
  
  task :javascript => :javascripts
  task :js         => :javascripts
end

# Support RSpec style
namespace :spec do
  task :javascripts => ["test:javascripts"]
  task :javascript  => ["test:javascripts"]
  task :js          => ["test:javascripts"]
end

# Support Micronaut style
namespace :examples do
  task :javascripts => ["test:javascripts"]
  task :javascript  => ["test:javascripts"]
  task :js          => ["test:javascripts"]
end


namespace :js do
  desc "Open fixtures directory"
  task :fixtures do
    fixture_dir = "#{find_base_dir}/fixtures"
    
    if PLATFORM[/darwin/]
      system("open #{fixture_dir}")
    elsif PLATFORM[/linux/]
      system("firefox #{fixture_dir}")
    else
      puts "You can run your in-browser fixtures from #{fixture_dir}."
    end
  end
  
  desc "Run Rhino JS shell"
  task :shell do
    rlwrap = `which rlwrap`.chomp
    system("#{rlwrap} #{rhino_command} -f #{plugin_prefix}/lib/shell.js -f -")
  end
end