chore: load i18n translations using lingui provider

7 files changed, 136 insertions, 2 deletions

diff --git a/package.json b/package.json
index 804b671..573521e 100644
--- a/package.json
+++ b/package.json
@@ -46,6 +46,7 @@
     "@commitlint/cli": "^15.0.0",
     "@commitlint/config-conventional": "^15.0.0",
     "@lingui/cli": "^3.13.0",
+    "@lingui/loader": "^3.13.0",
     "@lingui/macro": "^3.13.0",
     "@svgr/webpack": "^6.1.2",
     "@testing-library/react": "^12.1.2",
diff --git a/src/components/Branding/Branding.tsx b/src/components/Branding/Branding.tsx
index e5565a4..a8adf9b 100644
--- a/src/components/Branding/Branding.tsx
+++ b/src/components/Branding/Branding.tsx
@@ -12,7 +12,14 @@ const Branding: BrandingReturn = ({ isHome = false }) => {
   return (
     <div className={styles.wrapper}>
       <div className={styles.logo}>
-        <Image src={photo} alt={t`${config.name} picture`} layout="intrinsic" />
+        <Image
+          src={photo}
+          alt={t({
+            message: `${config.name} picture`,
+            comment: 'Branding logo.',
+          })}
+          layout="intrinsic"
+        />
       </div>
       {isHome ? (
         <h1 className={styles.name}>
diff --git a/src/i18n/fr/messages.po b/src/i18n/fr/messages.po
new file mode 100644
index 0000000..a05ea8e
--- /dev/null
+++ b/src/i18n/fr/messages.po
@@ -0,0 +1,23 @@
+msgid ""
+msgstr ""
+"POT-Creation-Date: 2021-12-13 12:10+0100\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Generator: @lingui/cli\n"
+"Language: fr\n"
+"Project-Id-Version: \n"
+"Report-Msgid-Bugs-To: \n"
+"PO-Revision-Date: \n"
+"Last-Translator: \n"
+"Language-Team: \n"
+"Plural-Forms: \n"
+
+#: src/config/website.ts:5
+msgid "Front-end developer"
+msgstr ""
+
+#. Branding logo.
+#: src/components/Branding/Branding.tsx:17
+msgid "{0} picture"
+msgstr ""
diff --git a/src/pages/_app.tsx b/src/pages/_app.tsx
index 8194b10..fde93eb 100644
--- a/src/pages/_app.tsx
+++ b/src/pages/_app.tsx
@@ -1,9 +1,37 @@
+import { useEffect, useRef } from 'react';
+import { useRouter } from 'next/router';
+import { i18n } from '@lingui/core';
+import { I18nProvider } from '@lingui/react';
 import { AppPropsWithLayout } from '@ts/types/app';
+import { initTranslation } from '@utils/helpers/i18n';
 import '../styles/globals.scss';
 
+initTranslation(i18n);
+
 function MyApp({ Component, pageProps }: AppPropsWithLayout) {
+  const router = useRouter();
+  const locale: string = router.locale || router.defaultLocale!;
+  const firstRender = useRef(true);
+
+  if (pageProps.translation && firstRender.current) {
+    i18n.load(locale, pageProps.translation);
+    i18n.activate(locale);
+    firstRender.current = false;
+  }
+
+  useEffect(() => {
+    if (pageProps.translation) {
+      i18n.load(locale, pageProps.translation);
+      i18n.activate(locale);
+    }
+  }, [locale, pageProps.translation]);
+
   const getLayout = Component.getLayout ?? ((page) => page);
-  return getLayout(<Component {...pageProps} />);
+  return (
+    <I18nProvider i18n={i18n}>
+      {getLayout(<Component {...pageProps} />)}
+    </I18nProvider>
+  );
 }
 
 export default MyApp;
diff --git a/src/pages/index.tsx b/src/pages/index.tsx
index 6022497..615fe0a 100644
--- a/src/pages/index.tsx
+++ b/src/pages/index.tsx
@@ -1,5 +1,7 @@
 import Layout from '@components/Layouts/Layout';
 import { NextPageWithLayout } from '@ts/types/app';
+import { loadTranslation } from '@utils/helpers/i18n';
+import { GetStaticProps } from 'next';
 import Head from 'next/head';
 import Image from 'next/image';
 import type { ReactElement } from 'react';
@@ -75,4 +77,17 @@ Home.getLayout = function getLayout(page: ReactElement) {
   return <Layout>{page}</Layout>;
 };
 
+export const getStaticProps: GetStaticProps = async (ctx) => {
+  const translation = await loadTranslation(
+    ctx.locale!,
+    process.env.NODE_ENV === 'production'
+  );
+
+  return {
+    props: {
+      translation,
+    },
+  };
+};
+
 export default Home;
diff --git a/src/utils/helpers/i18n.ts b/src/utils/helpers/i18n.ts
new file mode 100644
index 0000000..38616a2
--- /dev/null
+++ b/src/utils/helpers/i18n.ts
@@ -0,0 +1,35 @@
+import type { I18n } from '@lingui/core';
+import { en, fr } from 'make-plural/plurals';
+
+export interface LocaleData {
+  messages: object;
+  default: object;
+}
+
+export const locales = {
+  en: 'English',
+  fr: 'Français',
+};
+
+export const defaultLocale = 'fr';
+
+export function initTranslation(i18n: I18n): void {
+  i18n.loadLocaleData({
+    en: { plurals: en },
+    fr: { plurals: fr },
+  });
+}
+
+export async function loadTranslation(
+  locale: string,
+  isProduction: boolean = true
+) {
+  let data: LocaleData;
+  if (isProduction) {
+    data = await import(`src/i18n/${locale}/messages`);
+  } else {
+    data = await import(`@lingui/loader!src/i18n/${locale}/messages.po`);
+  }
+
+  return data.messages;
+}
diff --git a/yarn.lock b/yarn.lock
index 4d68102..d136bf8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1484,6 +1484,17 @@
     make-plural "^6.2.2"
     messageformat-parser "^4.1.3"
 
+"@lingui/loader@^3.13.0":
+  version "3.13.0"
+  resolved "https://registry.yarnpkg.com/@lingui/loader/-/loader-3.13.0.tgz#9d41cce476bbb782d0d4bde72c2133c28a47808b"
+  integrity sha512-MuLwM6vVMYH/ilCGunNGIPTvZU9gtjaohU54/bDCRbDJ5teN46UKqFTYqP6TwVWa+AF6hRMcgUprBcQJi7Iw8Q==
+  dependencies:
+    "@babel/runtime" "^7.11.2"
+    "@lingui/cli" "^3.13.0"
+    "@lingui/conf" "^3.13.0"
+    loader-utils "^2.0.0"
+    ramda "^0.27.1"
+
 "@lingui/macro@^3.13.0":
   version "3.13.0"
   resolved "https://registry.yarnpkg.com/@lingui/macro/-/macro-3.13.0.tgz#accb4a97ff7109d76647a1114f6527037cab5fef"
@@ -3458,6 +3469,11 @@ emojis-list@^2.0.0:
   resolved "https://registry.yarnpkg.com/emojis-list/-/emojis-list-2.1.0.tgz#4daa4d9db00f9819880c79fa457ae5b09a1fd389"
   integrity sha1-TapNnbAPmBmIDHn6RXrlsJof04k=
 
+emojis-list@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/emojis-list/-/emojis-list-3.0.0.tgz#5570662046ad29e2e916e71aae260abdff4f6a78"
+  integrity sha512-/kyM18EfinwXZbno9FyUGeFh87KC8HRQBQGildHZbEuRyWFOmv1U10o9BBp8XVZDVNNuQKyIGIu5ZYAAXJ0V2Q==
+
 encoding@0.1.13:
   version "0.1.13"
   resolved "https://registry.yarnpkg.com/encoding/-/encoding-0.1.13.tgz#56574afdd791f54a8e9b2785c0582a2d26210fa9"
@@ -5478,6 +5494,15 @@ loader-utils@1.2.3:
     emojis-list "^2.0.0"
     json5 "^1.0.1"
 
+loader-utils@^2.0.0:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/loader-utils/-/loader-utils-2.0.2.tgz#d6e3b4fb81870721ae4e0868ab11dd638368c129"
+  integrity sha512-TM57VeHptv569d/GKh6TAYdzKblwDNiumOdkFnejjD0XwTH87K90w3O7AiJRqdQoXygvi1VQTJTLGhJl7WqA7A==
+  dependencies:
+    big.js "^5.2.2"
+    emojis-list "^3.0.0"
+    json5 "^2.1.2"
+
 locate-path@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-2.0.0.tgz#2b568b265eec944c6d9c0de9c3dbbbca0354cd8e"