Extract the registration request from the registration service

.rubocop_todo.yml

@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2019-05-02 14:26:35 -0500 using RuboCop version 0.65.0.
+# on 2019-05-07 10:46:45 -0700 using RuboCop version 0.65.0.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -29,27 +29,27 @@ Lint/UriEscapeUnescape:
     - 'app/controllers/sdr_controller.rb'
     - 'spec/controllers/sdr_controller_spec.rb'
 
-# Offense count: 22
+# Offense count: 23
 Metrics/AbcSize:
-  Max: 122
+  Max: 94
 
 # Offense count: 3
 # Configuration parameters: CountComments.
 Metrics/ClassLength:
-  Max: 139
+  Max: 124
 
-# Offense count: 4
+# Offense count: 5
 Metrics/CyclomaticComplexity:
-  Max: 27
+  Max: 11
 
 # Offense count: 27
 # Configuration parameters: CountComments, ExcludedMethods.
 Metrics/MethodLength:
-  Max: 63
+  Max: 43
 
-# Offense count: 3
+# Offense count: 4
 Metrics/PerceivedComplexity:
-  Max: 27
+  Max: 11
 
 # Offense count: 9
 Naming/AccessorMethodName:
@@ -155,7 +155,7 @@ RSpec/ExpectInHook:
     - 'spec/services/publish_metadata_service_spec.rb'
     - 'spec/services/registration_service_spec.rb'
 
-# Offense count: 127
+# Offense count: 111
 # Configuration parameters: AssignmentOnly.
 RSpec/InstanceVariable:
   Exclude:
@@ -178,11 +178,6 @@ RSpec/MessageSpies:
     - 'spec/services/registration_service_spec.rb'
     - 'spec/services/version_service_spec.rb'
 
-# Offense count: 2
-# Configuration parameters: AggregateFailuresByDefault.
-RSpec/MultipleExpectations:
-  Max: 11
-
 # Offense count: 22
 RSpec/NestedGroups:
   Max: 5
@@ -261,7 +256,7 @@ Style/ConditionalAssignment:
   Exclude:
     - 'spec/support/foxml_helper.rb'
 
-# Offense count: 13
+# Offense count: 12
 Style/Documentation:
   Exclude:
     - 'spec/**/*'
@@ -275,7 +270,6 @@ Style/Documentation:
     - 'app/models/dor/service_item.rb'
     - 'app/models/dor/update_marc_record_service.rb'
     - 'app/services/dublin_core_service.rb'
-    - 'app/services/registration_service.rb'
     - 'config/application.rb'
     - 'config/initializers/okcomputer.rb'
 
@@ -363,17 +357,14 @@ Style/StringLiterals:
 
 # Offense count: 3
 # Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, MinSize.
+# Configuration parameters: .
 # SupportedStyles: percent, brackets
 Style/SymbolArray:
-  Exclude:
-    - 'app/controllers/versions_controller.rb'
-    - 'app/services/release_tags.rb'
-    - 'lib/tasks/rspec.rake'
+  EnforcedStyle: percent
+  MinSize: 4
 
-# Offense count: 3
+# Offense count: 2
 # Cop supports --auto-correct.
 Style/ZeroLengthPredicate:
   Exclude:
     - 'app/models/dor/update_marc_record_service.rb'
-    - 'app/services/registration_service.rb'

app/models/registration_request.rb

@@ -0,0 +1,103 @@
+# frozen_string_literal: true
+
+require 'uuidtools'
+
+# This represents the request a user could make to register an object
+class RegistrationRequest
+  # @param [Hash{Symbol => various}] params
+  # @option params [String] :object_type required
+  # @option params [String] :label required
+  # @option params [String] :admin_policy required
+  # @option params [String] :metadata_source
+  # @option params [String] :rights
+  # @option params [String] :collection
+  # @option params [Hash{String => String}] :source_id Primary ID from another system, max one key/value pair!
+  # @option params [Hash] :other_ids including :uuid if known
+  # @option params [String] :pid Fully qualified PID if you don't want one generated for you
+  # @option params [Integer] :workflow_priority]
+  # @option params [Array<String>] :seed_datastream datastream_names (only 'descMetadata' is a permitted value)
+  # @option params [Array<String>] :initiate_workflow workflow_ids
+  # @option params [Array] :tags
+  def initialize(params)
+    @params = params
+  end
+
+  # Raises Dor::ParameterError if the parameters aren't valid
+  def validate!
+    %i[object_type label admin_policy].each do |required_param|
+      raise Dor::ParameterError, "#{required_param.inspect} must be specified in call to register_object" unless params[required_param]
+    end
+    raise Dor::ParameterError, 'label cannot be empty to call register_object' if params[:label].empty? && %w[label none].include?(metadata_source)
+
+    raise Dor::ParameterError, "Unknown item type: '#{object_type}'" if item_class.nil?
+
+    raise Dor::ParameterError, "Unknown value for seed_datastream: '#{params[:seed_datastream]}'" if params[:seed_datastream] && params[:seed_datastream] != ['descMetadata']
+
+    raise ArgumentError, ":source_id Hash can contain at most 1 pair: recieved #{source_id.size}" if source_id.size > 1
+
+    raise Dor::ParameterError, "Unknown rights setting '#{rights}' when calling #{name}.register_object" if rights && rights != 'default' && !Dor::RightsMetadataDS.valid_rights_type?(rights)
+  end
+
+  def pid
+    params[:pid]
+  end
+
+  # TODO: Move to validate
+  def rights
+    params[:rights]
+  end
+
+  def initiate_workflow
+    Array(params[:initiate_workflow])
+  end
+
+  def workflow_priority
+    params[:workflow_priority] ? params[:workflow_priority].to_i : 0
+  end
+
+  def object_type
+    params[:object_type]
+  end
+
+  def admin_policy
+    params[:admin_policy]
+  end
+
+  def item_class
+    Dor.registered_classes[object_type]
+  end
+
+  def metadata_source
+    params[:metadata_source]
+  end
+
+  def seed_desc_metadata
+    params[:seed_datastream] && params[:seed_datastream] == ['descMetadata']
+  end
+
+  def label
+    params[:label].length > 254 ? params[:label][0, 254] : params[:label]
+  end
+
+  def source_id
+    params[:source_id] || {}
+  end
+
+  def other_ids
+    hash = params[:other_ids] || {}
+    hash[:uuid] ||= UUIDTools::UUID.timestamp_create.to_s
+    hash
+  end
+
+  def tags
+    params[:tags] || []
+  end
+
+  def collection
+    params[:collection]
+  end
+
+  private
+
+  attr_reader :params
+end