desc "Checkout project code from repositories"
task :'checkout' => :'checkout:all'

namespace :'checkout' do

  task :'all' => [ :'setup', :'pre', :'main', :'post' ]
  task :'pre'
  task :'post'

  task :'main' => [ :'buildtools', :'packages' ]
  
  task :'packages'

end

desc "Update the code"
task :'update' => [ :'checkout', :'update:all' ]

namespace :'update' do  

  task :'all' => [ :'setup', :'pre', :'main', :'post' ]
  task :'pre'
  task :'post'

  task :'main' => [ :'buildtools', :'packages' ]

  task :'buildtools' => BUILD_DIR
  task :'packages' => BUILD_DIR
  
  directory BUILD_DIR

end



# common tasks and helpers
task :'checkout-update:setup-tasks' do

  def _checkout_or_update(proc, pkg)
    case proc.arity
    when 0
        proc.call()
    when 1
        proc.call(pkg)
    when 2
        proc.call(pkg, BUILD_DIR)
    else
      error "Invalid checkouter arity (#{proc}, arity #{proc.arity()}"
    end
  end

  project.packages_and_application.each do | pkg |
    doit = true
    if pkg.nested_package?
      # do not checkout nor update nested packages
      doit = false
      # unless they are not in the same repo as parent package
      if (pkg.property_defined? :checkout)
        doit = true
      elsif (pkg.property_defined? :repository) and (pkg.repository != pkg.parent_package.repository)
        # doit = true        
      end 
      
    end

    if doit
      pkg_wc = File.join(BUILD_DIR , pkg.directory)
      # define checkout task
      # TODO
      task :'checkout:packages' => :"checkout:package:#{pkg.name}"

      if pkg.nested_package?
        task :"checkout:package:#{pkg.name}" => :"checkout:package:#{pkg.parent_package.name}"
      end
      
      task :"checkout:package:#{pkg.name}" => pkg_wc
      file pkg_wc do
        _checkout_or_update(pkg.checkout(), pkg)
      end


      
      # define update task
      task :'update:packages' => :"update:package:#{pkg.name}"
      task :"update:package:#{pkg.name}" do
        if (File.exist? pkg_wc)
          _checkout_or_update(pkg.update(), pkg)
        else 
          _checkout_or_update(pkg.checkout(), pkg)
        end
      end    
    end
  end
end

task :'setup:tasks' => 'checkout-update:setup-tasks'