import assert from "node:assert/strict";
import test from "node:test";

import { findDuplicateTranslationKeys } from "../scripts/i18n-catalog-validation.mjs";

test("allows the same translation key once in each locale", () => {
  const source = `
    export const generatedTranslations = {
      en: { "i18n:example.share.12345678": "Share" },
      de: { "i18n:example.share.12345678": "Freigeben" }
    };
  `;

  assert.deepEqual(findDuplicateTranslationKeys(source), []);
});

test("rejects duplicate keys within a generated locale catalog", () => {
  const source = `
    export const generatedTranslations = {
      en: {
        "i18n:example.share.12345678": "Share",
        "i18n:example.share.12345678": "Share"
      },
      de: {
        "i18n:example.share.12345678": "Freigabe",
        "i18n:example.share.12345678": "Freigeben"
      }
    };
  `;

  const findings = findDuplicateTranslationKeys(source, "fixture.ts");

  assert.equal(findings.length, 2);
  assert.match(findings[0], /fixture\.ts:\d+:\d+ duplicate generated translation key/);
  assert.match(findings[0], /locale "en"/);
  assert.match(findings[1], /locale "de"/);
  assert.ok(findings.every((finding) => finding.includes("first declared at line")));
});