require 'rbbcode'
require 'bb-ruby'

class Post < ActiveRecord::Base
  BBCODE_DEFAULTS = {
    'Quote' => [
      /\[quote(:.*)?=(.*?)\](.*?)\[\/quote\1?\]/mi,
      '<fieldset class="quote"><legend>\2</legend>\3</fieldset>',
      'Quote with citation',
      '[quote=mike]please quote me[/quote]',
      :quote
    ],
      'Quote without author' => [
        /\[quote(:.*)\](.*?)\[\/quote\1?\]/mi,
        '<fieldset class="quote">\2</fieldset>',
        'Quote without citation',
        '[quote]please quote me[/quote]',
        :quote
    ],
  }

    include Extra
    attr_protected :id, :updated_at, :created_at, :votes, :user_id

    scope :basic, :include => [{:user => [:team, :profile]}, :topic]

    validates_presence_of :topic, :user
    validates_length_of :text, :in => 1..10000

    before_save :parse_text
    after_create :remove_readings
    after_destroy :remove_topics, :if => Proc.new {|post| post.topic.posts.count == 0}

    belongs_to :user
    belongs_to :topic

    def number pages, i
      if i != -1
        pages.per_page * (pages.current_page - 1) + i + 1
      else
        topic.posts.count + 1
      end
    end

    def remove_readings
      Reading.delete_all ["readable_type = 'Topic' AND readable_id = ?", topic.id]
      Reading.delete_all ["readable_type = 'Forum' AND readable_id = ?", topic.forum.id]
    end

    def parse_text
      self.text_parsed = self.text.bbcode_to_html(BBCODE_DEFAULTS) if self.text
    end

    def remove_topics
      topic.destroy
    end

    def error_messages
      self.errors.full_messages.uniq
    end

    def can_create? cuser
      return false unless cuser
      errors.add :lock, I18n.t(:topics_locked) if topic.lock
      errors.add :user, I18n.t(:bans_mute) if cuser.banned?(Ban::TYPE_MUTE) and topic.forum != Forum::BANS
      errors.add :user, I18n.t(:registered_for_week) unless cuser.verified?
      (Forum.available_to(cuser, Forumer::ACCESS_REPLY).of_forum(topic.forum).first and errors.size == 0)
    end

    def can_update? cuser, params = {}
      return false unless cuser
      true if Verification.contain(params, [:text, :topic_id]) and user == cuser or cuser.admin?
    end

    def can_destroy? cuser
      cuser and cuser.admin?
    end
end