refactor: isolate i18n configuration in api

api/src/shared/infrastructure/i18n/i18n.js

@@ -0,0 +1,31 @@
+import path from 'node:path';
+import * as url from 'node:url';
+
+import { I18n } from 'i18n';
+
+const __dirname = url.fileURLToPath(new URL('.', import.meta.url));
+const translationsFolder = path.resolve(path.join(__dirname, '../../../../translations'));
+
+export const options = {
+  locales: ['en', 'fr', 'es', 'nl'],
+  directory: translationsFolder,
+  defaultLocale: 'fr',
+  queryParameter: 'lang',
+  languageHeaderField: 'Accept-Language',
+  objectNotation: true,
+  updateFiles: false,
+  mustacheConfig: {
+    tags: ['{', '}'],
+    disable: false,
+  },
+};
+
+export function getI18n() {
+  return new I18n(options);
+}
+
+export function getI18nForLocale(locale) {
+  const i18n = getI18n();
+  i18n.setLocale(locale);
+  return i18n;
+}

api/src/shared/infrastructure/plugins/i18n.js

@@ -1,20 +1,7 @@
-import * as url from 'node:url';
-
 import hapiI18n from 'hapi-i18n';
-const __dirname = url.fileURLToPath(new URL('.', import.meta.url));
+
+import { options } from '../i18n/i18n.js';
+
 const plugin = hapiI18n;
-const options = {
-  locales: ['en', 'fr', 'es', 'nl'],
-  directory: __dirname + '../../../../translations',
-  defaultLocale: 'fr',
-  queryParameter: 'lang',
-  languageHeaderField: 'Accept-Language',
-  objectNotation: true,
-  updateFiles: false,
-  mustacheConfig: {
-    tags: ['{', '}'],
-    disable: false,
-  },
-};
 
 export { options, plugin };

api/tests/shared/unit/infrastructure/i18n/i18n_test.js

@@ -0,0 +1,37 @@
+import { getI18n, getI18nForLocale, options } from '../../../../../src/shared/infrastructure/i18n/i18n.js';
+import { expect } from '../../../../test-helper.js';
+
+describe('Unit | Shared | Infrastucture | i18n', function () {
+  describe('default i18n options', function () {
+    it('returns i18n options', function () {
+      expect(options).to.have.property('locales').that.includes('en', 'fr', 'es', 'nl');
+      expect(options).to.have.property('directory').that.is.a('string');
+      expect(options).to.have.property('defaultLocale', 'fr');
+      expect(options).to.have.property('queryParameter', 'lang');
+      expect(options).to.have.property('languageHeaderField', 'Accept-Language');
+      expect(options).to.have.property('objectNotation', true);
+      expect(options).to.have.property('updateFiles', false);
+      expect(options)
+        .to.have.property('mustacheConfig')
+        .to.deep.equal({
+          tags: ['{', '}'],
+          disable: false,
+        });
+    });
+  });
+
+  describe('getI18n', function () {
+    it('returns an instance of I18n with default options', function () {
+      const i18n = getI18n();
+      expect(i18n.getLocale()).to.equal('fr');
+    });
+  });
+
+  describe('getI18nForLocale', function () {
+    it('returns an instance of I18n with the specified locale', function () {
+      const locale = 'es';
+      const i18n = getI18nForLocale(locale);
+      expect(i18n.getLocale()).to.equal(locale);
+    });
+  });
+});