class Scheduling


  attr_reader :sticky_user

  def initialize(tasks, users)
    @users = users
    @assigments = order_tasks(tasks).map do |task|
      users = select_users_for_task(task)
      Assignment.new(task, users, self)
    end
  end

  private

  def order_tasks(tasks)
    #here we order tasks by priority
  end

  def select_users_for_task(task)
    #here we get all the users that could perform that task, from our @users array.
  end

end

class Assignment
  def initialize(task, users, scheduling)
    @scheduling = scheduling
    @task = task
    @scheduling.sticky_user = @user = order_users(users).first
    @events = @user.add_to_bucket(self)
  end

  private

  def order_users(users)
    #here we find the best user to do the job.

    #rule 1 - the 'sticky user' gets priority
    if @scheduling.sticky_user && users.include?(@scheduling.sticky_user)
      ( [@scheduling.sticky_user] + users ).uniq
    else
      users
    end
  end


end