import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";

const __dirname = path.dirname(fileURLToPath(import.meta.url));

function parseMessageDict(source) {
	const dict = {};
	const re = /"([^"\\]+)"\s*:\s*((?:"(?:\\.|[^"\\])*")|(?:`(?:\\.|[^`\\])*`))/gs;
	let m;
	while ((m = re.exec(source))) {
		const key = m[1];
		const raw = m[2];
		dict[key] = raw.startsWith("`")
			? raw.slice(1, -1).replace(/\\`/g, "`").replace(/\\\$/g, "$").replace(/\\n/g, "\n")
			: JSON.parse(raw);
	}
	return dict;
}

const en = parseMessageDict(
	fs.readFileSync(path.resolve(__dirname, "../src/lib/i18n/messages/en.ts"), "utf8")
);
const fr = parseMessageDict(
	fs.readFileSync(path.resolve(__dirname, "../src/lib/i18n/messages/fr.ts"), "utf8")
);
const phrases = {};
for (const [k, v] of Object.entries(en)) {
	if (fr[k] === v) phrases[v] = true;
}
const list = Object.keys(phrases);
fs.writeFileSync(path.join(__dirname, "_phrases-needed.json"), JSON.stringify(list, null, 2));
console.log("unique phrases needed", list.length);