# The site class includes - in find_for_host - some key retrieval and creation logic that is called from ApplicationController to set the current site context.
# Otherwise it's just another Trusty data model.
require 'acts_as_list'

class Site < ActiveRecord::Base
  acts_as_list
  belongs_to :created_by, class_name: 'User'
  belongs_to :updated_by, class_name: 'User'
  belongs_to :production_homepage, class_name: 'ProductionPage'
  has_many :admins_sites
  has_many :admins, through: :admins_sites, class_name: 'User'

  default_scope { order('position ASC') }

  class << self
    attr_accessor :several

    # I've added one or two sql queries here for the sake of a separate default method

    def find_for_host(hostname = '')
      return default if hostname.blank?

      sites = includes(:homepage).where('domain IS NOT NULL')
      site = sites.find { |site| hostname == site.base_domain || hostname =~ Regexp.compile(site.domain) }
      site || default
    end

    # Site.default returns the the first site it can find with an empty domain pattern.

    def default
      find_by_domain('') || find_by_domain(nil) || catchall
    end

    # If none is found, we are probably brand new, so a workable default site is created.

    def catchall
      create({
               domain: '',
               name: 'default_site',
               base_domain: 'localhost',
               homepage: Page.find_by_parent_id(nil),
             })
    end

    # Returns true if more than one site is present. This is normally only used to make interface decisions, eg whether to show the site-chooser dropdown.

    def several?
      several = (count > 1) if several.nil?
    end
  end

  belongs_to :homepage, class_name: 'Page', foreign_key: 'homepage_id'
  validates_presence_of :name, :base_domain
  validates_uniqueness_of :domain

  after_create :create_homepage
  after_save :reload_routes

  # Returns the fully specified web address for the supplied path, or the root of this site if no path is given.

  def url(path = '/')
    uri = URI.join("http://#{base_domain}", path)
    uri.to_s
  end

  def create_homepage
    if homepage_id.blank?
      self.homepage = build_homepage(title: "#{name} Homepage",
                                     slug: name.to_slug.to_s, breadcrumb: 'Home')
      default_status = TrustyCms::Config['defaults.page.status']
      homepage.status = Status[default_status] if default_status
      default_parts = TrustyCms::Config['defaults.page.parts'].to_s.strip.split(/\s*,\s*/)
      default_parts.each do |name|
        homepage.parts << PagePart.new(name: name, filter_id: TrustyCms::Config['defaults.page.filter'])
      end
      save
    end
  end

  def reload_routes
    TrustyCms::Application.reload_routes!
  end
end