Improve Ident validation, extract Ident from Contact

#569

app/models/contact/ident.rb

@@ -0,0 +1,72 @@
+class Contact::Ident
+  include ActiveModel::Model
+
+  attr_accessor :code
+  attr_accessor :type
+  attr_accessor :country_code
+
+  validates :code, presence: true, code: true
+  validates :code, iso8601: { date_only: true }, if: :birthday?
+  validates :type, presence: true, inclusion: { in: Proc.new { types } }
+  validates :country_code, presence: true, iso31661_alpha2: true
+  validate :mismatched
+
+  def self.epp_code_map
+    {
+      '2003' => [
+        [:code, :blank],
+        [:type, :blank],
+        [:country_code, :blank],
+      ],
+      '2005' => [
+        [:base, :mismatch],
+        [:code, :invalid_national_id],
+        [:code, :invalid_reg_no],
+        [:code, :invalid_iso8601],
+        [:country_code, :invalid_iso31661_alpha2],
+      ],
+    }
+  end
+
+  def self.types
+    %w[org priv birthday]
+  end
+
+  Mismatch = Struct.new(:type, :country)
+
+  def self.mismatches
+    [
+      Mismatch.new('birthday', Country.new('EE')),
+    ]
+  end
+
+  def marked_for_destruction?
+    false
+  end
+
+  def birthday?
+    type == 'birthday'
+  end
+
+  def national_id?
+    type == 'priv'
+  end
+
+  def reg_no?
+    type == 'org'
+  end
+
+  def country
+    Country.new(country_code)
+  end
+
+  private
+
+  # https://github.com/rails/rails/issues/1513
+  def validation_context=(value); end
+
+  def mismatched
+    mismatched = self.class.mismatches.include?(Mismatch.new(type, country))
+    errors.add(:base, :mismatch, type: type, country: country) if mismatched
+  end
+end