class Conversation
  include AASM

  aasm do
    state :needs_attention, :initial => true
    state :read
    state :closed
    state :awaiting_response
    state :junk

    event :new_message do
    end

    event :view do
      transitions :to => :read, :from => [:needs_attention]
    end

    event :reply do
    end

    event :close do
      transitions :to => :closed, :from => [:read, :awaiting_response]
    end

    event :junk do
      transitions :to => :junk, :from => [:read]
    end

    event :unjunk do
    end
  end

  def initialize(persister)
    @persister = persister
  end

  private

  def aasm_read_state
    @persister.read_state
  end

  def aasm_write_state(state)
    @persister.write_state(state)
  end
end

class ConversationMultiple
  include AASM

  aasm(:left) do
    state :needs_attention, :initial => true
    state :read
    state :closed
    state :awaiting_response
    state :junk

    event :new_message do
    end

    event :view do
      transitions :to => :read, :from => [:needs_attention]
    end

    event :reply do
    end

    event :close do
      transitions :to => :closed, :from => [:read, :awaiting_response]
    end

    event :junk do
      transitions :to => :junk, :from => [:read]
    end

    event :unjunk do
    end
  end

  def initialize(persister)
    @persister = persister
  end

  private

  def aasm_read_state
    @persister.read_state
  end

  def aasm_write_state(state)
    @persister.write_state(state)
  end
end