class MonsterSpawn < ApplicationRecord
  belongs_to :monster
  belongs_to :location
  has_many :monster_spawn_combats

  after_create :send_chat_message

  def alive?
    self.remaining_hp > 0
  end

  def remaining_hp
    self.monster.max_hp - MonsterSpawnCombat.where(monster_spawn: self).sum(:hp_lost)
  end

  private
    def send_chat_message
      chat_message = ChatMessage.new(body: "A leviathan has appeared in #{location.name}!",
                                     chat_room: ChatRoom.find_by_gid("news"))
      if chat_message.save
        ChatRoomChannel.broadcast_chat_message(chat_message)
      end
    end
end