stefan-kolb/nucleus

module Nucleus
  module Adapters
    module V1
      class OpenshiftV2 < Stub
        module Regions
          # @see Stub#regions
          def regions
            response = get('/regions').body[:data]
            response.each { |region| to_nucleus_region(region) }
            # filter all non-available regions
            response.delete_if { |region| region[:allow_selection] == false }
            response
          end

          # @see Stub#region
          def region(region_name)
            region = convert_region(region_name)
            if region.nil?
              raise Errors::AdapterResourceNotFoundError,
                    "Region '#{region_name}' does not exist at the endpoint"
            end
            region
          end

          private

          # Retrieve a native region for the abstracted ID and assign its name to the application entity
          def retrieve_region(application)
            return unless application.key?(:region)
            found_region = native_region(application[:region])
            if found_region.nil?
              raise Errors::SemanticAdapterRequestError,
                    "Region '#{application[:region]}' does not exist at the endpoint"
            end
            application[:region] = found_region[:name]
          end

          def convert_region(region_name)
            found_region = native_region(region_name)
            found_region = to_nucleus_region(found_region) unless found_region.nil?
            found_region
          end

          def native_region(region_name)
            response = get('/regions').body[:data]
            response.delete_if { |region| region[:allow_selection] == false }
            response.find { |region| region[:name].casecmp(region_name).zero? }
          end

          def to_nucleus_region(region)
            region[:id] = region.delete(:name)
            # first created zone
            region[:created_at] = region[:zones].min_by { |v| v[:created_at] }
            # last updated zone
            region[:updated_at] = region[:zones].max_by { |v| v[:updated_at] }
            region
          end
        end
      end
    end
  end
end