class BlogComment < ActiveRecord::Base
  # attr_accessible :title, :body
  include Redmine::SafeAttributes
  belongs_to :blog
  belongs_to :author, :class_name => 'User', :foreign_key => 'author_id'

  acts_as_tree :counter_cache => :comments_count, :order => "#{BlogComment.table_name}.sticky desc ,#{BlogComment.table_name}.created_on ASC"
  acts_as_attachable
  belongs_to :last_reply, :class_name => 'BlogComment', :foreign_key => 'last_comment_id'
  # 虚拟关联
  has_many :user_acts, :class_name => 'UserAcivity',:as =>:act
  acts_as_watchable

  validates_presence_of  :title, :content
  validates_length_of :title, :maximum => 255
  #validate :cannot_reply_to_locked_comment, :on => :create
  safe_attributes 'title', 'content',"sticky", "locked"

  after_save :add_user_activity
  after_update :update_activity
  before_destroy :destroy_user_activity

  scope :like, lambda {|arg|
    if arg.blank?
      where(nil)
    else
      pattern = "%#{arg.to_s.strip.downcase}%"
      where(" LOWER(title) LIKE :p ", :p => pattern)
    end
  }

  #动态更新
  def update_activity
    user_activity = UserActivity.where("act_type='BlogComment' and act_id =?",self.id).first
    if user_activity
      user_activity.updated_at = Time.now
      user_activity.save
    end
  end

  #在个人动态里面增加当前动态
  def add_user_activity
    if self.parent_id.nil? #只有发博文才插入动态
        user_activity = UserActivity.where("act_type = '#{self.class.to_s}' and act_id = '#{self.id}'").first
        if user_activity
          user_activity.save
        else
            user_activity = UserActivity.new
            user_activity.act_id = self.id
            user_activity.act_type = self.class.to_s
            user_activity.container_type = "Blog"
            user_activity.container_id = self.blog_id
            user_activity.user_id = self.author_id
            user_activity.save
        end
    end
  end

  def destroy_user_activity
    user_activity = UserActivity.where("act_type = '#{self.class.to_s}' and act_id = '#{self.id}'")
    user_activity.destroy_all
  end
  def deleted_attach_able_by? user
    (user && user.logged? && (self.author == user) ) || user.admin?
  end

  def project
  end
end