Complete Internationalization Implementation for ARC Platform

app/controllers/application_controller.rb

@@ -2,6 +2,7 @@
 
 class ApplicationController < ActionController::Base
   include Pagy::Backend
+  include LocaleSwitcher
 
   before_action :authenticate_user! # All users should be authenticated in all controllers by default
   before_action :configure_permitted_parameters, if: :devise_controller?

app/controllers/concerns/locale_switcher.rb

@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+module LocaleSwitcher
+  extend ActiveSupport::Concern
+
+  included do
+    around_action :switch_locale
+  end
+
+  private
+
+  def switch_locale(&)
+    locale = locale_from_params || locale_from_session || locale_from_header || I18n.default_locale
+    I18n.with_locale(locale, &)
+  end
+
+  def locale_from_params
+    locale = params[:locale]
+    return locale if locale.present? && I18n.available_locales.include?(locale.to_sym)
+
+    nil
+  end
+
+  def locale_from_session
+    locale = session[:locale]
+    return locale if locale.present? && I18n.available_locales.include?(locale.to_sym)
+
+    nil
+  end
+
+  def locale_from_header
+    return nil unless request.env['HTTP_ACCEPT_LANGUAGE']
+
+    # Parse Accept-Language header and find the first available locale
+    accepted_locales = request.env['HTTP_ACCEPT_LANGUAGE'].scan(/[a-z]{2}/)
+    accepted_locales.find { |locale| I18n.available_locales.include?(locale.to_sym) }
+  end
+
+  def default_url_options
+    I18n.locale == I18n.default_locale ? {} : { locale: I18n.locale }
+  end
+end

config/application.rb

@@ -23,5 +23,14 @@ class Application < Rails::Application
     #
     # config.time_zone = "Central Time (US & Canada)"
     # config.eager_load_paths << Rails.root.join("extras")
+
+    # Set default locale to English
+    config.i18n.default_locale = :en
+
+    # Available locales for the application
+    config.i18n.available_locales = [:en, :sw, :fr]
+
+    # Load all locale files in config/locales/
+    config.i18n.load_path += Dir[Rails.root.join('config', 'locales', '**', '*.{rb,yml}')]
   end
 end

config/locales/en.yml

@@ -1,10 +1,53 @@
-# To learn more, please read the Rails Internationalization guide
-# available at https://guides.rubyonrails.org/i18n.html.
+# English translations for Arc Platform
+# To learn more, please read the Rails Internationalization guide:
+# https://guides.rubyonrails.org/i18n.html
 
 en:
+  # Common translations
+  common:
+    actions:
+      save: 'Save'
+      cancel: 'Cancel'
+      edit: 'Edit'
+      delete: 'Delete'
+      back: 'Back'
+      submit: 'Submit'
+      confirm: 'Are you sure?'
+    messages:
+      success: 'Operation completed successfully'
+      error: 'An error occurred'
+      not_found: 'Record not found'
+      unauthorized: 'You are not authorized to perform this action'
+
+  # Authentication and authorization
   unauthorized:
     sign_in: 'Please sign in to perform the action'
-
+
+  # Flash messages
+  flash:
+    notice: 'Notice'
+    alert: 'Alert'
+    success: 'Success'
+    error: 'Error'
+
+  # Models
+  activerecord:
+    models:
+      chapter: 'Chapter'
+      project: 'Project'
+      country: 'Country'
+    attributes:
+      chapter:
+        title: 'Title'
+        description: 'Description'
+      project:
+        name: 'Name'
+        description: 'Description'
+      country:
+        name: 'Name'
+        code: 'Code'
+
+  # Controllers
   chapters:
     create:
       success: 'Chapter was successfully created.'
@@ -29,10 +72,12 @@ en:
     destroy:
       success: 'Project was successfully destroyed.'
 
+  # Devise and authentication
   registrations:
     bot_detection_failed_alert: "Sorry, we couldn't process your request."
     turnstile_forbidden_error: "We had a problem creating your account."
 
+  # Turnstile (CAPTCHA)
   turnstile:
     warnings:
       pass: "Turnstile: PASS secret in use. All checks passed. Use FAIL secret for failure tests or real secret in production."
@@ -42,3 +87,16 @@ en:
     errors:
       registration_failed: 'Please complete the Turnstile challenge to create an account.'
       login_failed: 'Please complete the Turnstile challenge to sign in.'
+
+  # Date and time formats
+  date:
+    formats:
+      default: "%Y-%m-%d"
+      long: "%B %d, %Y"
+      short: "%b %d"
+
+  time:
+    formats:
+      default: "%a, %d %b %Y %H:%M:%S %z"
+      long: "%B %d, %Y %H:%M"
+      short: "%d %b %H:%M"

config/locales/fr.yml

@@ -0,0 +1,101 @@
+# French translations for Arc Platform
+# Traductions françaises pour Arc Platform
+
+fr:
+  # Common translations
+  common:
+    actions:
+      save: 'Enregistrer'
+      cancel: 'Annuler'
+      edit: 'Modifier'
+      delete: 'Supprimer'
+      back: 'Retour'
+      submit: 'Soumettre'
+      confirm: 'Êtes-vous sûr?'
+    messages:
+      success: 'Opération réussie'
+      error: 'Une erreur est survenue'
+      not_found: 'Enregistrement introuvable'
+      unauthorized: "Vous n'êtes pas autorisé à effectuer cette action"
+
+  # Authentication and authorization
+  unauthorized:
+    sign_in: 'Veuillez vous connecter pour effectuer cette action'
+
+  # Flash messages
+  flash:
+    notice: 'Avis'
+    alert: 'Alerte'
+    success: 'Succès'
+    error: 'Erreur'
+
+  # Models
+  activerecord:
+    models:
+      chapter: 'Chapitre'
+      project: 'Projet'
+      country: 'Pays'
+    attributes:
+      chapter:
+        title: 'Titre'
+        description: 'Description'
+      project:
+        name: 'Nom'
+        description: 'Description'
+      country:
+        name: 'Nom'
+        code: 'Code'
+
+  # Controllers
+  chapters:
+    create:
+      success: 'Le chapitre a été créé avec succès.'
+    update:
+      success: 'Le chapitre a été mis à jour avec succès.'
+    destroy:
+      success: 'Le chapitre a été supprimé avec succès.'
+
+  countries:
+    create:
+      success: 'Le pays a été créé avec succès.'
+    update:
+      success: 'Le pays a été mis à jour avec succès.'
+    destroy:
+      success: 'Le pays a été supprimé avec succès.'
+
+  projects:
+    create:
+      success: 'Le projet a été créé avec succès.'
+    update:
+      success: 'Le projet a été mis à jour avec succès.'
+    destroy:
+      success: 'Le projet a été supprimé avec succès.'
+
+  # Devise and authentication
+  registrations:
+    bot_detection_failed_alert: "Désolé, nous n'avons pas pu traiter votre demande."
+    turnstile_forbidden_error: "Nous avons rencontré un problème lors de la création de votre compte."
+
+  # Turnstile (CAPTCHA)
+  turnstile:
+    warnings:
+      pass: "Turnstile: Secret PASS utilisé. Tous les contrôles sont passés. Utilisez le secret FAIL pour les tests d'échec ou le secret réel en production."
+      fail_mismatch: "Turnstile: Clé de site FAIL avec un secret non-FAIL. Cela peut donner des résultats PASS inattendus."
+      verification_failed: "La vérification Turnstile a échoué: %{errors}"
+      verification_error: "Erreur de vérification Turnstile (tentative %{attempt}/%{max}): %{error}"
+    errors:
+      registration_failed: 'Veuillez compléter le défi Turnstile pour créer un compte.'
+      login_failed: 'Veuillez compléter le défi Turnstile pour vous connecter.'
+
+  # Date and time formats
+  date:
+    formats:
+      default: "%d/%m/%Y"
+      long: "%d %B %Y"
+      short: "%d %b"
+
+  time:
+    formats:
+      default: "%a %d %b %Y %H:%M:%S %z"
+      long: "%d %B %Y %H:%M"
+      short: "%d %b %H:%M"

config/locales/sw.yml

@@ -0,0 +1,101 @@
+# Kiswahili translations for Arc Platform
+# Tafsiri za Kiswahili kwa Arc Platform
+
+sw:
+  # Common translations
+  common:
+    actions:
+      save: 'Hifadhi'
+      cancel: 'Ghairi'
+      edit: 'Hariri'
+      delete: 'Futa'
+      back: 'Rudi'
+      submit: 'Wasilisha'
+      confirm: 'Je, una uhakika?'
+    messages:
+      success: 'Operesheni imekamilika kwa mafanikio'
+      error: 'Hitilafu imetokea'
+      not_found: 'Rekodi haijapatikana'
+      unauthorized: 'Huna ruhusa ya kufanya kitendo hiki'
+
+  # Authentication and authorization
+  unauthorized:
+    sign_in: 'Tafadhali ingia ili kufanya kitendo hiki'
+
+  # Flash messages
+  flash:
+    notice: 'Taarifa'
+    alert: 'Tahadhari'
+    success: 'Mafanikio'
+    error: 'Hitilafu'
+
+  # Models
+  activerecord:
+    models:
+      chapter: 'Sura'
+      project: 'Mradi'
+      country: 'Nchi'
+    attributes:
+      chapter:
+        title: 'Kichwa'
+        description: 'Maelezo'
+      project:
+        name: 'Jina'
+        description: 'Maelezo'
+      country:
+        name: 'Jina'
+        code: 'Msimbo'
+
+  # Controllers
+  chapters:
+    create:
+      success: 'Sura imeundwa kwa mafanikio.'
+    update:
+      success: 'Sura imesasishwa kwa mafanikio.'
+    destroy:
+      success: 'Sura imefutwa kwa mafanikio.'
+
+  countries:
+    create:
+      success: 'Nchi imeundwa kwa mafanikio.'
+    update:
+      success: 'Nchi imesasishwa kwa mafanikio.'
+    destroy:
+      success: 'Nchi imefutwa kwa mafanikio.'
+
+  projects:
+    create:
+      success: 'Mradi umeundwa kwa mafanikio.'
+    update:
+      success: 'Mradi umesasishwa kwa mafanikio.'
+    destroy:
+      success: 'Mradi umefutwa kwa mafanikio.'
+
+  # Devise and authentication
+  registrations:
+    bot_detection_failed_alert: "Samahani, hatukuweza kushughulikia ombi lako."
+    turnstile_forbidden_error: "Tulikuwa na tatizo la kuunda akaunti yako."
+
+  # Turnstile (CAPTCHA)
+  turnstile:
+    warnings:
+      pass: "Turnstile: Siri ya PASS inatumika. Ukaguzi wote umepita. Tumia siri ya FAIL kwa majaribio ya kushindwa au siri halisi katika uzalishaji."
+      fail_mismatch: "Turnstile: Sitekey ya FAIL na siri isiyo ya FAIL. Hii inaweza kutoa matokeo ya PASS yasiyotarajiwa."
+      verification_failed: "Uthibitisho wa Turnstile umeshindwa: %{errors}"
+      verification_error: "Hitilafu ya uthibitisho wa Turnstile (jaribio %{attempt}/%{max}): %{error}"
+    errors:
+      registration_failed: 'Tafadhali kamilisha changamoto ya Turnstile ili kuunda akaunti.'
+      login_failed: 'Tafadhali kamilisha changamoto ya Turnstile ili kuingia.'
+
+  # Date and time formats
+  date:
+    formats:
+      default: "%Y-%m-%d"
+      long: "%d %B, %Y"
+      short: "%d %b"
+
+  time:
+    formats:
+      default: "%a, %d %b %Y %H:%M:%S %z"
+      long: "%d %B, %Y %H:%M"
+      short: "%d %b %H:%M"