#
# Author:: John Keiser (<jkeiser@opscode.com>)
# Copyright:: Copyright (c) 2013 Opscode, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

require 'chef_fs/file_system/chef_repository_file_system_entry'
require 'chef_fs/file_system/chef_repository_file_system_cookbooks_dir'

module ChefFS
  module FileSystem
    class ChefRepositoryFileSystemCookbookEntry < ChefRepositoryFileSystemEntry
      def initialize(name, parent, file_path = nil, ruby_only = false, recursive = false)
        super(name, parent, file_path)
        @ruby_only = ruby_only
        @recursive = recursive
      end

      attr_reader :ruby_only
      attr_reader :recursive

      def children
        Dir.entries(file_path).sort.
            select { |child_name| can_have_child?(child_name, File.directory?(File.join(file_path, child_name))) }.
            map { |child_name| ChefRepositoryFileSystemCookbookEntry.new(child_name, self, nil, ruby_only, recursive) }.
            select { |entry| !(entry.dir? && entry.children.size == 0) }
      end

      def can_have_child?(name, is_dir)
        if is_dir
          return recursive && name != '.' && name != '..'
        elsif ruby_only
          return false if name[-3..-1] != '.rb'
        end

        # Check chefignore
        ignorer = parent
        begin
          if ignorer.is_a?(ChefRepositoryFileSystemCookbooksDir)
            # Grab the path from entry to child
            path_to_child = name
            child = self
            while child.parent != ignorer
              path_to_child = PathUtils.join(child.name, path_to_child)
              child = child.parent
            end
            # Check whether that relative path is ignored
            return !ignorer.chefignore || !ignorer.chefignore.ignored?(path_to_child)
          end
          ignorer = ignorer.parent
        end while ignorer

        true
      end
    end
  end
end