Revert "i18n: Show translation levels for each language in the UI"

This reverts commit 7aa06e08.

app/helpers/preferences_helper.rb

@@ -76,7 +76,7 @@ module PreferencesHelper
 
   def language_choices
     options_for_select(
-      selectable_locales_with_translation_level.sort,
+      Gitlab::I18n.selectable_locales.map(&:reverse).sort,
       current_user.preferred_language
     )
   end
@@ -107,18 +107,6 @@ module PreferencesHelper
   def default_first_day_of_week
     first_day_of_week_choices.rassoc(Gitlab::CurrentSettings.first_day_of_week).first
   end
-
-  def selectable_locales_with_translation_level
-    Gitlab::I18n.selectable_locales.map do |code, language|
-      [
-        s_("i18n|%{language} (%{percent_translated}%% translated)") % {
-          language: language,
-          percent_translated: Gitlab::I18n.percentage_translated_for(code)
-        },
-        code
-      ]
-    end
-  end
 end
 
 PreferencesHelper.prepend_if_ee('EE::PreferencesHelper')

app/models/user.rb

@@ -431,7 +431,7 @@ class User < ApplicationRecord
 
   def preferred_language
     read_attribute('preferred_language') ||
-      I18n.default_locale.to_s.presence_in(Gitlab::I18n.available_locales) ||
+      I18n.default_locale.to_s.presence_in(Gitlab::I18n::AVAILABLE_LANGUAGES.keys) ||
       'en'
   end
 

changelogs/unreleased/trans-levels-master-patch-26507.yml

----
-title: Add the translation level for each language in the user profile language selector
-merge_request: 59420
-author:
-type: changed

doc/development/i18n/merging_translations.md

@@ -78,10 +78,3 @@ recreate it with the following steps:
 1. Select the `gitlab-org/gitlab` repository.
 1. In `Select Branches for Translation`, select `master`.
 1. Ensure the `Service Branch Name` is `master-i18n`.
-
-## Manually update the translation levels
-
-There's no automated way to pull the translation levels from CrowdIn, to display
-this information in the language selection dropdown. Therefore, the translation
-levels are hard-coded in the `TRANSLATION_LEVELS` constant in [`i18n.rb`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/i18n.rb),
-and must be regularly updated.

lib/gitlab/i18n.rb

@@ -4,6 +4,20 @@ module Gitlab
   module I18n
     extend self
 
+    # Languages with less then 2% of available translations will not
+    # be available in the UI.
+    # https://gitlab.com/gitlab-org/gitlab/-/issues/221012
+    NOT_AVAILABLE_IN_UI = %w[
+      fil_PH
+      pl_PL
+      nl_NL
+      id_ID
+      cs_CZ
+      bg
+      eo
+      gl_ES
+    ].freeze
+
     AVAILABLE_LANGUAGES = {
       'bg' => 'Bulgarian - български',
       'cs_CZ' => 'Czech - čeština',
@@ -28,49 +42,9 @@ module Gitlab
       'zh_HK' => 'Chinese, Traditional (Hong Kong) - 繁體中文 (香港)',
       'zh_TW' => 'Chinese, Traditional (Taiwan) - 繁體中文 (台灣)'
     }.freeze
-    private_constant :AVAILABLE_LANGUAGES
-
-    # Languages with less then MINIMUM_TRANSLATION_LEVEL% of available translations will not
-    # be available in the UI.
-    # https://gitlab.com/gitlab-org/gitlab/-/issues/221012
-    MINIMUM_TRANSLATION_LEVEL = 2
-
-    # Currently monthly updated manually by ~group::import PM.
-    # https://gitlab.com/gitlab-org/gitlab/-/issues/18923
-    TRANSLATION_LEVELS = {
-      'bg' => 1,
-      'cs_CZ' => 1,
-      'de' => 20,
-      'en' => 100,
-      'eo' => 1,
-      'es' => 44,
-      'fil_PH' => 1,
-      'fr' => 14,
-      'gl_ES' => 1,
-      'id_ID' => 0,
-      'it' => 3,
-      'ja' => 49,
-      'ko' => 15,
-      'nl_NL' => 1,
-      'pl_PL' => 1,
-      'pt_BR' => 23,
-      'ru' => 34,
-      'tr_TR' => 18,
-      'uk' => 46,
-      'zh_CN' => 78,
-      'zh_HK' => 3,
-      'zh_TW' => 4
-    }.freeze
-    private_constant :TRANSLATION_LEVELS
 
     def selectable_locales
-      @selectable_locales ||= AVAILABLE_LANGUAGES.reject do |code, _name|
-        percentage_translated_for(code) < MINIMUM_TRANSLATION_LEVEL
-      end
-    end
-
-    def percentage_translated_for(code)
-      TRANSLATION_LEVELS.fetch(code, 0)
+      AVAILABLE_LANGUAGES.reject { |key, _value| NOT_AVAILABLE_IN_UI.include? key }
     end
 
     def available_locales

locale/gitlab.pot

@@ -37939,9 +37939,6 @@ msgstr ""
 msgid "https://your-bitbucket-server"
 msgstr ""
 
-msgid "i18n|%{language} (%{percent_translated}%% translated)"
-msgstr ""
-
 msgid "image diff"
 msgstr ""
 

spec/features/profiles/user_edit_preferences_spec.rb

 # frozen_string_literal: true
-
 require 'spec_helper'
 
 RSpec.describe 'User edit preferences profile', :js do
@@ -64,4 +63,17 @@ RSpec.describe 'User edit preferences profile', :js do
       expect(page).to have_content('Failed to save preferences.')
     end
   end
+
+  describe 'User language' do
+    let(:user) { create(:user, preferred_language: :es) }
+
+    it 'shows the user preferred language by default' do
+      expect(page).to have_select(
+        'user[preferred_language]',
+        selected: 'Spanish - español',
+        options: Gitlab::I18n.selectable_locales.values,
+        visible: :all
+      )
+    end
+  end
 end

spec/helpers/preferences_helper_spec.rb

@@ -121,23 +121,6 @@ RSpec.describe PreferencesHelper do
     end
   end
 
-  describe '#language_choices' do
-    it 'lists all the selectable language options with their translation percent' do
-      stub_const(
-        'Gitlab::I18n::TRANSLATION_LEVELS',
-        'en' => 100,
-        'es' => 65
-      )
-
-      stub_user(preferred_language: :en)
-
-      expect(helper.language_choices).to eq([
-        '<option selected="selected" value="en">English (100% translated)</option>',
-        '<option value="es">Spanish - español (65% translated)</option>'
-      ].join("\n"))
-    end
-  end
-
   def stub_user(messages = {})
     if messages.empty?
       allow(helper).to receive(:current_user).and_return(nil)

spec/lib/gitlab/i18n_spec.rb

@@ -3,21 +3,13 @@
 require 'spec_helper'
 
 RSpec.describe Gitlab::I18n do
-  let(:user) { create(:user, preferred_language: :es) }
+  let(:user) { create(:user, preferred_language: 'es') }
 
   describe '.selectable_locales' do
-    it 'does not return languages with low translation levels', quarantine: 'https://gitlab.com/gitlab-org/gitlab/-/issues/329723' do
-      stub_const(
-        'Gitlab::I18n::TRANSLATION_LEVELS',
-        'pt_BR' => 0,
-        'en' => 100,
-        'es' => 65
-      )
-
-      expect(described_class.selectable_locales).to eq({
-        'en' => 'English',
-        'es' => 'Spanish - español'
-      })
+    it 'does not return languages that should not be available in the UI' do
+      Gitlab::I18n::NOT_AVAILABLE_IN_UI.each do |language|
+        expect(described_class.selectable_locales).not_to include(language)
+      end
     end
   end