run.rake

def say(msg, &block)
  puts "#{msg}..."

  if block_given?
      yield
    puts " Done."
  end
end

namespace :run_app do

  desc 'To do `bundle install` in given directory'
  task :bundle_install, [:dir_name] do |t, args|
    say 'bundle install command is executing inside '+ "#{args[:dir_name]}"  do
      if Dir.exists?("#{args[:dir_name]}")
        system("cd #{args[:dir_name]} && bundle install")
      else
        puts "File #{args[:dir_name]} not found."
      end
    end
  end

  desc 'To do `bundle update` in given directory'
  task :bundle_update, [:dir_name] do |t, args|
    say 'bundle update command is executing inside ' + "#{args[:dir_name]}" do
      if Dir.exists?("#{args[:dir_name]}")
        system("cd #{args[:dir_name]} && bundle update")
      end
    end
  end

  desc 'To do `bundle exec rails s` in given directory'
  task :rails_server, [:dir_name] do |t, args|
    say 'bundle update command is executing inside '+ "#{args[:dir_name]}"  do
      if Dir.exists?("#{args[:dir_name]}")
        system("cd #{args[:dir_name]} && bundle exec rails s")
      end
    end
  end

  desc 'To run demo_rails rails app '
  task :rails do
    say 'Running rails app..' do
      file_name = 'demo_rails'
      # Rake.application.invoke_task("run_app:bundle_install[#{file_name}]")
      # Rake.application.invoke_task("run_app:bundle_update[#{file_name}]")
      # Rake.application.invoke_task("run_app:rails_server[#{file_name}]")
      #
      # or do these lines:
      Rake::Task["run_app:bundle_install"].invoke("#{file_name}")
      Rake::Task["run_app:bundle_update"].invoke("#{file_name}")
      Rake::Task["run_app:rails_server"].invoke("#{file_name}")
    end
  end

  desc 'To do `bundle exec nanoc compile` in given directory'
  task :nanoc_compile, [:dir_name] do |t, args|
    say '`nanoc` command is executing inside '+ "#{args[:dir_name]}"  do
      if Dir.exists?("#{args[:dir_name]}")
        system("cd #{args[:dir_name]} && bundle exec nanoc")
      end
    end
  end

  desc 'To do `bundle exec nanoc view` in given directory'
  task :nanoc_server, [:dir_name] do |t, args|
    say '`nanoc view` command is executing inside '+ "#{args[:dir_name]}"  do
      if Dir.exists?("#{args[:dir_name]}")
        system("cd #{args[:dir_name]} && bundle exec nanoc view")
      end
    end
  end

  desc 'To run demo_nanoc nanoc app '
  task :nanoc do
    say 'Running nanoc app..' do
      file_name = 'demo_nanoc'
      # Rake.application.invoke_task("run_app:bundle_install[#{file_name}]")
      # Rake.application.invoke_task("run_app:bundle_update[#{file_name}]")
      # Rake.application.invoke_task("run_app:rails_server[#{file_name}]")
      #
      # or do these lines:
      Rake::Task["run_app:bundle_install"].invoke("#{file_name}")
      Rake::Task["run_app:bundle_update"].invoke("#{file_name}")
      Rake::Task["run_app:nanoc_compile"].invoke("#{file_name}")
      Rake::Task["run_app:nanoc_server"].invoke("#{file_name}")
    end
  end

  desc 'To do `bundle exec ruby app.rb` in given directory'
  task :sinatra_server, [:dir_name] do |t, args|
    say '`ruby app.rb` command is executing inside '+ "#{args[:dir_name]}"  do
      if Dir.exists?("#{args[:dir_name]}")
        system("cd #{args[:dir_name]} && bundle exec ruby app.rb")
      end
    end
  end

  desc 'To run demo_sinatra Sinatra app '
  task :sinatra do
    say 'Running sinatra app..' do
      file_name = 'demo_sinatra'
      # Rake.application.invoke_task("run_app:bundle_install[#{file_name}]")
      # Rake.application.invoke_task("run_app:bundle_update[#{file_name}]")
      # Rake.application.invoke_task("run_app:rails_server[#{file_name}]")
      #
      # or do these lines:
      Rake::Task["run_app:bundle_install"].invoke("#{file_name}")
      Rake::Task["run_app:bundle_update"].invoke("#{file_name}")
      Rake::Task["run_app:sinatra_server"].invoke("#{file_name}")
    end
  end
end