# hx/listing/flatindex - Flat index generator
#
# Copyright (c) 2009-2011 MenTaLguY <mental@rydia.net>
# 
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
# 
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

require 'hx'
require 'hx/listing'
require 'set'

module Hx
module Listing

class FlatIndex
  include Hx::Filter

  def self.new(input, options)
    listing = super(input, options)
    Listing.apply_options(listing, options)
  end

  def initialize(input, options)
    @input = input
    @index_name = options[:index_name] || "index"
  end

  def each_entry_path(selector)
    yield @index_name if selector.accept_path? @index_name
    self
  end

  def get_entry(path)
    raise NoSuchEntryError, path unless path == @index_name
    index = {'items' => []}
    @input.each_entry(Path::ALL) do |path, entry|
      index['items'] << {'path' => path, 'entry' => entry}
      updated = [entry['updated'], index['updated']].compact.max
      index['updated'] = updated if updated
    end
    index
  end
end

end
end