UX: Use user locale for locations. (#6527)

* UX: Use user locale for locations.

* DEV: Added MaxMindDB test data and fixed test.

app/serializers/concerns/user_auth_tokens_mixin.rb

@@ -20,7 +20,7 @@ def client_ip
   end
 
   def location
-    ipinfo = DiscourseIpInfo.get(client_ip)
+    ipinfo = DiscourseIpInfo.get(client_ip, I18n.locale)
 
     location = [ipinfo[:city], ipinfo[:region], ipinfo[:country]].reject { |x| x.blank? }.join(", ")
     return I18n.t('staff_action_logs.unknown') if location.blank?

lib/discourse_ip_info.rb

@@ -4,8 +4,12 @@ class DiscourseIpInfo
   include Singleton
 
   def initialize
+    open_db(File.join(Rails.root, 'vendor', 'data'))
+  end
+
+  def open_db(path)
     begin
-      @mmdb_filename = File.join(Rails.root, 'vendor', 'data', 'GeoLite2-City.mmdb')
+      @mmdb_filename = File.join(path, 'GeoLite2-City.mmdb')
       @mmdb = MaxMindDB.new(@mmdb_filename, MaxMindDB::LOW_MEMORY_FILE_READER)
       @cache = LruRedux::ThreadSafeCache.new(1000)
     rescue Errno::ENOENT => e
@@ -15,7 +19,7 @@ def initialize
     end
   end
 
-  def lookup(ip)
+  def lookup(ip, locale = :en)
     return {} unless @mmdb
 
     begin
@@ -26,22 +30,28 @@ def lookup(ip)
 
     return {} if !result || !result.found?
 
+    locale = locale.to_s.sub('_', '-')
+
     {
-      country: result.country.name,
+      country: result.country.name(locale) || result.country.name,
       country_code: result.country.iso_code,
-      region: result.subdivisions.most_specific.name,
-      city: result.city.name,
+      region: result.subdivisions.most_specific.name(locale) || result.subdivisions.most_specific.name,
+      city: result.city.name(locale) || result.city.name,
     }
   end
 
-  def get(ip)
+  def get(ip, locale = :en)
     return {} unless @mmdb
 
     ip = ip.to_s
-    @cache[ip] ||= lookup(ip)
+    @cache["#{ip}-#{locale}"] ||= lookup(ip, locale)
+  end
+
+  def self.open_db(path)
+    instance.open_db(path)
   end
 
-  def self.get(ip)
-    instance.get(ip)
+  def self.get(ip, locale = :en)
+    instance.get(ip, locale)
   end
 end

spec/serializers/user_auth_token_serializer_spec.rb

@@ -0,0 +1,23 @@
+require 'rails_helper'
+
+describe UserAuthTokenSerializer do
+
+  let(:user) { Fabricate(:user) }
+  let(:token) { UserAuthToken.generate!(user_id: user.id, client_ip: '2a02:ea00::') }
+
+  before(:each) do
+    DiscourseIpInfo.open_db(File.join(Rails.root, 'spec', 'fixtures', 'mmdb'))
+  end
+
+  it 'serializes user auth tokens with respect to user locale' do
+    I18n.locale = 'de'
+    json = UserAuthTokenSerializer.new(token, scope: Guardian.new(user), root: false).as_json
+    expect(json[:location]).to include('Schweiz')
+  end
+
+  it 'correctly translates Discourse locale to MaxMindDb locale' do
+    I18n.locale = 'zh_CN'
+    json = UserAuthTokenSerializer.new(token, scope: Guardian.new(user), root: false).as_json
+    expect(json[:location]).to include('瑞士')
+  end
+end