import fs from 'node:fs';
import path from 'node:path';
import vm from 'node:vm';
import assert from 'node:assert/strict';
import ts from '../../../../job-tracker-ui/node_modules/typescript/lib/typescript.js';
import { fileURLToPath } from 'node:url';

const here = path.dirname(fileURLToPath(import.meta.url));
const root = path.resolve(here, '../../../..');
const source = fs.readFileSync(path.join(root, 'job-tracker-ui/src/i18n/translations.ts'), 'utf8');
const compiled = ts.transpileModule(source, { compilerOptions: { module: ts.ModuleKind.CommonJS } }).outputText;
const sandbox = { exports: {} };
vm.runInNewContext(compiled, sandbox);
const { en, nb } = sandbox.exports.translations;
const placeholders = value => [...new Set(value.match(/\{\w+\}/g) ?? [])].sort();
assert.deepEqual(placeholders('A {count} and {name} {count}'), ['{count}', '{name}']);
const missingNb = Object.keys(en).filter(key => !(key in nb));
const extraNb = Object.keys(nb).filter(key => !(key in en));
const placeholderDifferences = Object.keys(en).filter(key => key in nb && JSON.stringify(placeholders(en[key])) !== JSON.stringify(placeholders(nb[key])));
const unchangedStrings = Object.keys(en).filter(key => en[key] === nb[key]).map(key => ({ key, value: en[key] }));
const report = { englishKeys: Object.keys(en).length, bokmalKeys: Object.keys(nb).length, missingNb, extraNb, placeholderDifferences, unchangedStrings,
  limitation: 'Dictionary/placeholder parity is static evidence. Equal strings can be proper names or technical words. Human Bokmal review and provider-generated/server messages remain separate.' };
fs.writeFileSync(path.join(here, 'localisation.json'), JSON.stringify(report, null, 2) + '\n');
assert.deepEqual(missingNb, []);
assert.deepEqual(extraNb, []);
assert.deepEqual(placeholderDifferences, []);
console.log(JSON.stringify({ ...report, unchangedStrings: unchangedStrings.length }));