class Gamefic::Action

def self.sort(actions)
  actions.sort_by.with_index do |action, idx|
    [-action.substantiality, -action.strictness, -action.precision, idx]
  end
end

def arguments
  matches.map(&:argument)
end

def command
  @command ||= Command.new(response.verb, matches.map(&:argument), response.meta?, input)
end

def execute
  response.execute(actor, *arguments)
  self
end

def initialize(actor, response, matches, input = nil)
  @actor = actor
  @response = response
  @matches = matches
  @input = input
end

def invalid?
  !valid?
end

def meta?
  response.meta?
end

def precision
  response.precision
end

def queries
  response.queries
end

def strictness
  matches.sum(0, &:strictness)
end

def substantiality
  arguments.that_are(Entity).length + (verb ? 1 : 0)
end

def valid?
  response.accept?(actor, command)
end

def verb
  response.verb
end