# frozen_string_literal: true

module Rambling
  module Trie
    module Configuration
      # Provides configurable properties for Rambling::Trie.
      class Properties
        # The configured {Readers Readers}.
        # @return [ProviderCollection<Readers::Reader>] the mapping of configured {Readers Readers}.
        attr_reader :readers

        # The configured {Serializers Serializers}.
        # @return [ProviderCollection<Serializers::Serializer>] the mapping of configured {Serializers Serializers}.
        attr_reader :serializers

        # The configured {Compressor Compressor}.
        # @return [Compressor] the configured compressor.
        attr_accessor :compressor

        # The configured +root_builder+, which returns a {Nodes::Node Node} when called.
        # @return [Proc<Nodes::Node>] the configured +root_builder+.
        attr_accessor :root_builder

        # The configured +tmp_path+, which will be used for throwaway files.
        # @return [String] the configured +tmp_path+.
        attr_accessor :tmp_path

        # Returns a new properties instance.
        def initialize
          reset
        end

        # Resets back to default properties.
        # @return [void]
        def reset
          reset_readers
          reset_serializers

          @compressor = Rambling::Trie::Compressor.new
          @root_builder = -> { Rambling::Trie::Nodes::Raw.new }
          @tmp_path = '/tmp'
        end

        private

        attr_writer :readers, :serializers

        def reset_readers
          @readers = Rambling::Trie::Configuration::ProviderCollection.new :reader, default_reader_providers
        end

        def default_reader_providers
          { txt: Rambling::Trie::Readers::PlainText.new }
        end

        def reset_serializers
          marshal_serializer = Rambling::Trie::Serializers::Marshal.new
          yaml_serializer = Rambling::Trie::Serializers::Yaml.new
          zip_serializer = Rambling::Trie::Serializers::Zip.new self

          @serializers = Rambling::Trie::Configuration::ProviderCollection.new(
            :serializer,
            marshal: marshal_serializer,
            yml: yaml_serializer,
            yaml: yaml_serializer,
            zip: zip_serializer,
          )
        end
      end
    end
  end
end