Module: Gexp::StateDefinition::StateMachine::ClassMethods

Defined in:
lib/gexp/state_definition/state_machine.rb

Instance Method Summary collapse

Instance Method Details

#define_state_by(state_configs) ⇒ Object 



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# File 'lib/gexp/state_definition/state_machine.rb', line 12

def define_state_by(state_configs)
  sm            = state_configs
  state_aliases = [ :all, :any ]

  self.instance_eval do
    unless self.methods.include?("state_machine")
      extend ::StateMachine::MacroMethods
    end

    state_machine initial: sm[:initial] do

      # Внешний хук от Handlers
      around_transition :around_handlers

      # State Machine Context
      smc = self

      # State definition
      sm[:states].each do |name, hash|
        smc.state name.to_sym
      #  method = hash
      #  smc.state name do
      #    (methods || []).each do |method|
      #      self.send(method)
      #    end
      #  end
      end

      # Events definition
      sm[:events].each do |name, transitions|

        smc.event name do

          transitions.each do |opts|
            opts[:if] ||= []
            opts[:do] ||= []

            from = opts[:from] || :any
            to   = opts[:to]   || :any

            from = send(from) if state_aliases.include?(from)
            to   = send(to) if state_aliases.include?(to)

            transition from => to, :if => lambda { |item|
              opts[:if].map { |method|
                item.send(method)
              }.all?
            }
            #, :do => lambda { |item|
            #  opts[:do].each { |method|
            #    item.send(method)
            #  }
            #}
          end

        end
      end

      # Before/After transition
      [ :before, :after ].each do |name|

        (sm[name] || []).each do |opts|

          from = opts[:from] || :any
          to   = opts[:to]   || :any

          from = send(from) if state_aliases.include?(from)
          to   = send(to) if state_aliases.include?(to)

          smc.send(:"#{name}_transition", from => to, :do => lambda { |item|
            opts[:do].each do |method|
              item.send(method)
            end
          })

        end
      end

    end
  end
end