module RailsConnector

# This module manages storage of different kind of cache data.
module CmsCacheStorage
  VERSION = 'v1'.freeze

  class << self
    attr_writer :cache

    def cache
      @cache ||= begin
        prefix = VERSION.dup
        prefix.concat('-utf8') if String.new.encoding_aware?
        Cache.new(fallback_backend: backend_cache, cache_prefix: prefix)
      end
    end

    def backend_cache=(new_cache)
      @backend_cache = new_cache
      @cache = nil
    end

    def backend_cache
      @backend_cache || Rails.cache
    end

    def read_workspace_data(workspace_id)
      cache.read("workspace/#{workspace_id}")
    end

    def write_workspace_data(workspace_id, workspace_data)
      cache.write("workspace/#{workspace_id}", workspace_data)
    end

    def read_content_state(content_state_id)
      cache.read("content/#{content_state_id}")
    end

    def write_content_state(content_state_id, content_state)
      cache.write("content/#{content_state_id}", content_state)
    end

    def read_obj_data(content_state_id, index, key)
      cache.read("content/#{content_state_id}/obj/#{index}/#{key}")
    end

    def write_obj_data(content_state_id, index, key, data)
      cache.write("content/#{content_state_id}/obj/#{index}/#{key}", data)
    end
  end
end

end