Add support for PhonyRails.default_country_code that would be used by…

… normalize_number and plausible_number?

lib/phony_rails.rb

@@ -5,6 +5,24 @@
 require 'yaml'
 
 module PhonyRails
+
+  def self.default_country_code
+    @default_country_code ||= nil
+  end
+
+  def self.default_country_code=(new_code)
+    @default_country_code = new_code
+    @default_country_number = nil # Reset default country number, will lookup next time its asked for
+  end
+
+  def self.default_country_number
+    @default_country_number ||= default_country_code.present? ? country_number_for(default_country_code) : nil
+  end
+
+  def self.default_country_number=(new_number)
+    @default_country_number = new_number
+  end
+
   def self.country_number_for(country_code)
     return if country_code.nil?
 
@@ -37,7 +55,7 @@ def self.normalize_number(number, options = {})
       if !Phony.plausible?(number) || _country_number != country_code_from_number(number)
         number = "#{_country_number}#{number}"
       end
-    elsif _default_country_number = options[:default_country_number] || country_number_for(options[:default_country_code])
+    elsif _default_country_number = options[:default_country_number] || country_number_for(options[:default_country_code]) || default_country_number
       options[:add_plus] = true if options[:add_plus].nil?
       # We try to add the default country number and see if it is a
       # correct phone number. See https://github.com/joost/phony_rails/issues/87#issuecomment-89324426
@@ -71,7 +89,8 @@ def self.plausible_number?(number, options = {})
     return false if number.nil? || number.blank?
     number = normalize_number(number, options)
     country_number = options[:country_number] || country_number_for(options[:country_code]) ||
-                     options[:default_country_number] || country_number_for(options[:default_country_code])
+                     options[:default_country_number] || country_number_for(options[:default_country_code]) ||
+                     default_country_number
     Phony.plausible? number, cc: country_number
   rescue
     false

spec/lib/phony_rails_spec.rb

@@ -320,6 +320,31 @@ class NormalHome < ActiveRecord::Base
     it 'should normalize even an implausible number' do
       expect(PhonyRails.normalize_number('01')).to eql('1')
     end
+
+    context 'with default_country_code set' do
+
+      before { PhonyRails.default_country_code = 'NL' }
+      after { PhonyRails.default_country_code = nil }
+
+      it 'normalize using the default' do
+        expect(PhonyRails.normalize_number('010-1234123')).to eql('+31101234123')
+        expect(PhonyRails.normalize_number('010-1234123')).to eql('+31101234123')
+        expect(PhonyRails.normalize_number('070-4157134')).to eql('+31704157134')
+        expect(PhonyRails.normalize_number('0031-70-4157134')).to eql('+31704157134')
+        expect(PhonyRails.normalize_number('+31-70-4157134')).to eql('+31704157134')
+      end
+
+      it 'allows default_country_code to be overridden' do
+        expect(PhonyRails.normalize_number('0322-69497', country_code: 'BE')).to eql('+3232269497')
+        expect(PhonyRails.normalize_number('+32 3 226 94 97', country_code: 'BE')).to eql('+3232269497')
+        expect(PhonyRails.normalize_number('0450 764 000', country_code: 'AU')).to eql('+61450764000')
+
+        expect(PhonyRails.normalize_number('0322-69497', default_country_code: 'BE')).to eql('+3232269497')
+        expect(PhonyRails.normalize_number('+32 3 226 94 97', default_country_code: 'BE')).to eql('+3232269497')
+        expect(PhonyRails.normalize_number('0450 764 000', default_country_code: 'AU')).to eql('+61450764000')
+      end
+
+    end
   end
 
   describe 'PhonyRails.plausible_number?' do
@@ -367,6 +392,24 @@ class NormalHome < ActiveRecord::Base
       expect(Phony).to receive(:plausible?).twice.and_raise('unexpected error')
       is_expected.not_to be_plausible_number normalizable_number, country_code: 'US'
     end
+
+    context 'with default_country_code set' do
+
+      before { PhonyRails.default_country_code = 'FR' }
+      after { PhonyRails.default_country_code = nil }
+
+      it 'uses the default' do
+        is_expected.not_to be_plausible_number normalizable_number
+        is_expected.to be_plausible_number formatted_french_number_with_country_code
+      end
+
+      it 'allows default_country_code to be overridden' do
+        is_expected.not_to be_plausible_number empty_number, country_code: 'US'
+        is_expected.not_to be_plausible_number nil_number, country_code: 'US'
+      end
+
+    end
+
   end
 
   shared_examples_for 'model with PhonyRails' do