feat(i18n): wire locale switcher, verify translations, and add CI check

.github/workflows/ci.yml

@@ -0,0 +1,23 @@
+name: CI
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+jobs:
+  check-locales:
+    name: Check Locale Parity
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+
+      - name: Check Locales Parity
+        run: node scripts/check-locales.js

messages/es.json

@@ -130,7 +130,7 @@
   },
   "LoanCard": {
     "totalOwed": "Total adeudado",
-    "principal": "Principal",
+    "principal": "Capital",
     "accruedInterest": "Interés acumulado",
     "interest": "Interés",
     "nextPayment": "Próximo pago",

messages/tl.json

@@ -5,10 +5,10 @@
     "getStarted": "Magsimula Na",
     "learnMore": "Matuto Nang Higit Pa",
     "stats": {
-      "netWorth": "Net Worth",
+      "netWorth": "Netong Halaga",
       "activeLoans": "Mga aktibong loan",
       "totalRemitted": "Kabuuang naipadala",
-      "yieldApy": "Yield (APY)"
+      "yieldApy": "Kita (APY)"
     },
     "activity": {
       "title": "Kamakailang aktibidad",
@@ -23,7 +23,7 @@
       "sendRemittanceDesc": "Maglipat ng pondo sa buong mundo"
     },
     "outreach": {
-      "title": "Community Outreach",
+      "title": "Programa sa Komunidad",
       "description": "Ang mga bagong borrower sa Ghana ay naghahanap ng mga micro-loan para sa mga kagamitang pang-agrikultura. Tulungang palaguin ang ecosystem!",
       "explore": "Galugarin ang mga pagkakataon"
     }
@@ -46,7 +46,7 @@
       "completed": "Nakumpleto",
       "repaid": "Binayaran",
       "failed": "Nabigo",
-      "liquidated": "Liquidated",
+      "liquidated": "Na-liquidate",
       "defaulted": "Di-nakamit"
     },
     "pagination": {
@@ -60,22 +60,22 @@
       "amount": "Halaga",
       "status": "Katayuan",
       "transactionHash": "Hash ng Transaksyon",
-      "stellarExplorerLink": "Stellar Explorer Link"
+      "stellarExplorerLink": "Link ng Stellar Explorer"
     }
   },
   "WalletPage": {
     "csv": {
       "date": "Petsa",
       "type": "Uri",
       "amount": "Halaga",
-      "asset": "Asset",
+      "asset": "Ari-arian",
       "status": "Katayuan",
       "transactionHash": "Hash ng Transaksyon",
-      "stellarExplorerLink": "Stellar Explorer Link"
+      "stellarExplorerLink": "Link ng Stellar Explorer"
     }
   },
   "Navigation": {
-    "home": "Home",
+    "home": "Pangunahin",
     "loans": "Mga Loan",
     "repay": "Bayaran",
     "dashboard": "Dashboard",
@@ -98,7 +98,7 @@
       "all": "Lahat",
       "active": "Aktibo",
       "repaid": "Bayad Na",
-      "defaulted": "Defaulted"
+      "defaulted": "Hindi Nabayaran"
     },
     "empty": {
       "title": "Walang nahanap na loan",
@@ -110,15 +110,15 @@
       "next": "Susunod",
       "pageOf": "Pahina {current} of {total}"
     },
-    "loanNumber": "Loan #{id}",
+    "loanNumber": "Utang #{id}",
     "due": "Dapat bayaran sa {date}",
     "status": {
       "active": "Aktibo",
       "pending": "Nakabinbin"
     }
   },
   "Kingdom": {
-    "title": "Kingdom Dashboard",
+    "title": "Dashboard ng Kaharian",
     "description": "Subaybayan ang iyong pag-unlad, i-unlock ang mga tagumpay, at umangat sa mga ranggo",
     "welcome": "Maligayang pagdating, {kingdomTitle}!",
     "level": "Ngayon ay nasa Level {level} ka",
@@ -130,7 +130,7 @@
   },
   "LoanCard": {
     "totalOwed": "Kabuuang Utang",
-    "principal": "Principal",
+    "principal": "Pangunahing Halaga",
     "accruedInterest": "Naipon na Interes",
     "interest": "Interes",
     "nextPayment": "Susunod na Pagbabayad",
@@ -140,7 +140,7 @@
     "onTrack": "Sa Track",
     "dueSoon": "Malapit nang Dapat Bayaran",
     "overdue": "Lintasan",
-    "defaulted": "Defaulted",
+    "defaulted": "Hindi Nabayaran",
     "repayNow": "Bayaran Ngayon",
     "payNowOverdue": "Bayaran Ngayon (Lintasan)",
     "contactSupport": "Kontakin ang Support",

package.json

@@ -11,7 +11,8 @@
     "format": "prettier --write .",
     "test:e2e": "playwright test",
     "prepare": "husky",
-    "analyze": "ANALYZE=true next build"
+    "analyze": "ANALYZE=true next build",
+    "check-locales": "node scripts/check-locales.js"
   },
   "dependencies": {
     "@sentry/nextjs": "^10.46.0",

scripts/check-locales.js

@@ -0,0 +1,81 @@
+const fs = require("fs");
+const path = require("path");
+
+const MESSAGES_DIR = path.join(__dirname, "../messages");
+const EN_FILE = path.join(MESSAGES_DIR, "en.json");
+const OTHER_LOCALES = ["es.json", "tl.json"];
+
+function flattenObject(ob) {
+  let toReturn = {};
+  for (let i in ob) {
+    if (!ob.hasOwnProperty(i)) continue;
+
+    if (typeof ob[i] == "object" && ob[i] !== null) {
+      let flatObject = flattenObject(ob[i]);
+      for (let x in flatObject) {
+        if (!flatObject.hasOwnProperty(x)) continue;
+        toReturn[i + "." + x] = flatObject[x];
+      }
+    } else {
+      toReturn[i] = ob[i];
+    }
+  }
+  return toReturn;
+}
+
+function checkLocales() {
+  console.log("Checking locale drift...");
+
+  if (!fs.existsSync(EN_FILE)) {
+    console.error("Error: en.json not found");
+    process.exit(1);
+  }
+
+  const enContent = JSON.parse(fs.readFileSync(EN_FILE, "utf8"));
+  const enKeys = Object.keys(flattenObject(enContent)).sort();
+
+  let hasErrors = false;
+
+  OTHER_LOCALES.forEach((localeFile) => {
+    const localePath = path.join(MESSAGES_DIR, localeFile);
+    if (!fs.existsSync(localePath)) {
+      console.error(`Error: ${localeFile} not found`);
+      hasErrors = true;
+      return;
+    }
+
+    const localeContent = JSON.parse(fs.readFileSync(localePath, "utf8"));
+    const localeKeys = Object.keys(flattenObject(localeContent)).sort();
+
+    const missingKeys = enKeys.filter((k) => !localeKeys.includes(k));
+    const extraKeys = localeKeys.filter((k) => !enKeys.includes(k));
+
+    if (missingKeys.length > 0) {
+      console.error(`\n❌ [${localeFile}] Missing keys compared to en.json:`);
+      missingKeys.forEach((k) => console.error(`  - ${k}`));
+      hasErrors = true;
+    }
+
+    if (extraKeys.length > 0) {
+      console.error(`\n❌ [${localeFile}] Extra keys not found in en.json:`);
+      extraKeys.forEach((k) => console.error(`  - ${k}`));
+      hasErrors = true;
+    }
+
+    if (missingKeys.length === 0 && extraKeys.length === 0) {
+      console.log(`✅ ${localeFile} is in sync with en.json`);
+    }
+  });
+
+  if (hasErrors) {
+    console.error(
+      "\n❌ Locale drift detected! Please ensure all locale files have the exact same keys as en.json.",
+    );
+    process.exit(1);
+  } else {
+    console.log("\n✨ All locales are perfectly in sync!");
+    process.exit(0);
+  }
+}
+
+checkLocales();

src/app/[locale]/settings/page.tsx

@@ -1,6 +1,7 @@
 "use client";
 
 import { useEffect, useState } from "react";
+import { useParams, useRouter, usePathname } from "next/navigation";
 import {
   User,
   Wallet,
@@ -423,15 +424,25 @@ function SecuritySection() {
 // ─── Display section ──────────────────────────────────────────────────────────
 
 function DisplaySection() {
+  const router = useRouter();
+  const pathname = usePathname();
+  const params = useParams();
+  const currentLocale = (params?.locale as string) || "en";
+
   const LANGUAGES = [
     { code: "en", label: "English" },
     { code: "es", label: "Español" },
-    { code: "fr", label: "Français" },
-    { code: "pt", label: "Português" },
-    { code: "hi", label: "हिन्दी" },
+    { code: "tl", label: "Tagalog" },
   ];
 
-  const [language, setLanguage] = useState("en");
+  const handleLanguageChange = (e: React.ChangeEvent<HTMLSelectElement>) => {
+    const newLocale = e.target.value;
+    if (pathname.startsWith(`/${currentLocale}`)) {
+      router.push(pathname.replace(`/${currentLocale}`, `/${newLocale}`));
+    } else {
+      router.push(`/${newLocale}${pathname}`);
+    }
+  };
 
   const theme = useThemeStore((s) => s.theme);
   const hydrated = useThemeStore((s) => s.hydrated);
@@ -488,8 +499,8 @@ function DisplaySection() {
           </label>
           <select
             id="settings-language"
-            value={language}
-            onChange={(e) => setLanguage(e.target.value)}
+            value={currentLocale}
+            onChange={handleLanguageChange}
             className="w-full rounded-lg border border-zinc-200 bg-white px-3 py-2 text-sm text-zinc-900 focus:border-indigo-500 focus:outline-none dark:border-zinc-800 dark:bg-zinc-900 dark:text-zinc-50"
           >
             {LANGUAGES.map((l) => (
@@ -498,9 +509,6 @@ function DisplaySection() {
               </option>
             ))}
           </select>
-          <p className="text-xs text-zinc-400 dark:text-zinc-500 mt-1.5">
-            Full i18n support is coming soon. Only English is fully translated.
-          </p>
         </div>
       </CardContent>
     </Card>