[feature] Add script to auto-generate test-translation.json from .po files

scripts/generateTranslations.js

@@ -0,0 +1,108 @@
+const fs = require("fs");
+const path = require("path");
+
+// Use project-root-relative paths for cross-platform safety
+const poFilePath = path.join(process.cwd(), "i18n", "en.po");
+const outputFilePath = path.join(
+  process.cwd(),
+  "client",
+  "test-translation.json",
+);
+
+// Read the PO file
+const poData = fs.readFileSync(poFilePath, "utf-8");
+
+// Split lines
+const lines = poData.split(/\r?\n/);
+
+// Parse translations
+const translations = {};
+
+let currentId = null;
+let currentMsgstr = [];
+let activeField = null; // "msgid" | "msgstr" | null
+let activeIndex = 0;
+
+// Parse quoted string with error context
+const parseQuoted = (raw, lineNum) => {
+  try {
+    return JSON.parse(raw);
+  } catch (err) {
+    throw new Error(
+      `Failed to parse quoted string at line ${lineNum}: ${raw}\nOriginal error: ${err.message}`,
+    );
+  }
+};
+
+// Flush current entry to translations
+const flushEntry = () => {
+  if (currentId !== null) {
+    translations[currentId] = {
+      msgid: currentId,
+      msgstr: currentMsgstr.length ? currentMsgstr : [""],
+    };
+  }
+  currentId = null;
+  currentMsgstr = [];
+  activeField = null;
+  activeIndex = 0;
+};
+
+// Process each line
+lines.forEach((rawLine, idx) => {
+  const line = rawLine.trim();
+  const lineNum = idx + 1; // for error messages
+
+  if (!line) {
+    flushEntry();
+    return;
+  }
+
+  if (/^msgid\s+/.test(line)) {
+    flushEntry();
+    currentId = parseQuoted(line.replace(/^msgid\s+/, ""), lineNum);
+    activeField = "msgid";
+    return;
+  }
+
+  const msgstrMatch = line.match(/^msgstr(?:\[(\d+)\])?\s+(.*)$/);
+  if (msgstrMatch) {
+    activeField = "msgstr";
+    activeIndex = msgstrMatch[1] ? Number(msgstrMatch[1]) : 0;
+    currentMsgstr[activeIndex] = parseQuoted(msgstrMatch[2], lineNum);
+    return;
+  }
+
+  if (line.startsWith('"')) {
+    const chunk = parseQuoted(line, lineNum);
+    if (activeField === "msgid" && currentId !== null) {
+      currentId += chunk;
+    } else if (activeField === "msgstr") {
+      currentMsgstr[activeIndex] = (currentMsgstr[activeIndex] || "") + chunk;
+    }
+  }
+});
+
+// Flush any remaining entry
+flushEntry();
+
+// Prepare final JSON
+const finalJSON = {
+  charset: "utf-8",
+  headers: {
+    "content-type": "text/plain; charset=utf-8",
+    "plural-forms": "nplurals = 2; plural = (n != 1);",
+    language: "en",
+    "mime-version": "1.0",
+    "content-transfer-encoding": "8bit",
+  },
+  translations: {
+    "": translations,
+  },
+};
+
+// Write output file with trailing newline
+fs.writeFileSync(outputFilePath, `${JSON.stringify(finalJSON, null, 2)}\n`);
+
+// eslint-disable-next-line no-console
+console.log("✅ JSON generated!");