require 'acts-as-taggable-on'
require 'seo_meta'

module Refinery
  class BlogPost < ActiveRecord::Base

    is_seo_meta if self.table_exists?

    default_scope :order => 'published_at DESC'
    #.first & .last will be reversed -- consider a with_exclusive_scope on these?

    belongs_to :author, :class_name => 'Refinery::User', :foreign_key => :user_id, :readonly => true

    has_many :comments, :class_name => 'Refinery::BlogComment', :dependent => :destroy
    acts_as_taggable

    has_many :categorizations, :dependent => :destroy
    has_many :categories, :through => :categorizations, :source => :blog_category

    acts_as_indexed :fields => [:title, :body]

    validates :title, :presence => true, :uniqueness => true
    validates :body,  :presence => true

    has_friendly_id :friendly_id_source, :use_slug => true,
                    :default_locale => (::Refinery::I18n.default_frontend_locale rescue :en),
                    :approximate_ascii => Refinery::Setting.find_or_set(:approximate_ascii, false, :scoping => 'blog'),
                    :strip_non_ascii => Refinery::Setting.find_or_set(:strip_non_ascii, false, :scoping => 'blog')

    scope :by_archive, lambda { |archive_date|
      where(['published_at between ? and ?', archive_date.beginning_of_month, archive_date.end_of_month])
    }

    scope :by_year, lambda { |archive_year|
      where(['published_at between ? and ?', archive_year.beginning_of_year, archive_year.end_of_year])
    }

    scope :all_previous, lambda { where(['published_at <= ?', Time.now.beginning_of_month]) }

    scope :live, lambda { where( "published_at <= ? and draft = ?", Time.now, false) }

    scope :previous, lambda { |i| where(["published_at < ? and draft = ?", i.published_at, false]).limit(1) }
    
    scope :uncategorized, lambda { 
      live.includes(:categories).where(:categories => { Refinery::Categorization.table_name => { :blog_category_id => nil } })
    }

    attr_accessible :title, :body, :custom_teaser, :tag_list, :draft, :published_at, :custom_url
    attr_accessible :browser_title, :meta_keywords, :meta_description, :user_id, :category_ids
    
    self.per_page = Refinery::Setting.find_or_set(:blog_posts_per_page, 10)
    
    def next
      BlogPost.next(self).first
    end

    def prev
      BlogPost.previous(self).first
    end

    def live?
      !draft and published_at <= Time.now
    end

    def category_ids=(ids)
      self.categories = ids.reject{|id| id.blank?}.collect {|c_id|
        Refinery::BlogCategory.find(c_id.to_i) rescue nil
      }.compact
    end

    def friendly_id_source
      custom_url.present? ? custom_url : title
    end

    class << self
      def next(current_record)
        self.send(:with_exclusive_scope) do
          where(["published_at > ? and draft = ?", current_record.published_at, false]).order("published_at ASC")
        end
      end

      def comments_allowed?
        Refinery::Setting.find_or_set(:comments_allowed, true, :scoping => 'blog')
      end

      def teasers_enabled?
        Refinery::Setting.find_or_set(:teasers_enabled, true, :scoping => 'blog')
      end

      def teaser_enabled_toggle!
        currently = Refinery::Setting.find_or_set(:teasers_enabled, true, :scoping => 'blog')
        Refinery::Setting.set(:teasers_enabled, :value => !currently, :scoping => 'blog')
      end
    end

    module ShareThis
      DEFAULT_KEY = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"

      class << self
        def key
          Refinery::Setting.find_or_set(:share_this_key, BlogPost::ShareThis::DEFAULT_KEY, :scoping => 'blog')
        end

        def enabled?
          key = BlogPost::ShareThis.key
          key.present? and key != BlogPost::ShareThis::DEFAULT_KEY
        end
      end
    end

  end
end