class Maglev::GetPageFullpath

def build_fullpath(base_url, path)
  fullpath = [base_url]
  fullpath.push(locale) if prefix_by_default_locale?
  fullpath.push(path) unless path == 'index' # for SEO purpose)
  fullpath.push(nil) if fullpath == [nil] # avoid "" as the fullpath
  fullpath.join('/')
end

def call
  base_url = get_base_url.call(preview_mode: preview_mode)
  safe_path = path || fetch_path
  return unless safe_path
  build_fullpath(base_url, safe_path)
end

def default_locale
  site.default_locale.prefix
end

def fetch_path
  paths = if page.respond_to?(:path_translations)
            # static pages already have all the translated paths
            page.path_translations.stringify_keys
          else
            # we need to request the DB to get the paths in all the locales
            fetch_paths
          end
  paths[locale.to_s] || paths[default_locale.to_s]
end

def fetch_paths
  page.respond_to?(:path_hash) ? page.path_hash : Maglev::PagePath.canonical_value_hash(page)
end

def prefix_by_default_locale?
  !same_as_default_locale?
end

def same_as_default_locale?
  locale.to_s == default_locale.to_s
end

def site
  @site ||= fetch_site.call
end