import {createHash} from 'node:crypto';
import {readdirSync, readFileSync} from 'node:fs';
import path from 'node:path';
import {describe, expect, it, vi} from 'vitest';

vi.mock('i18next-http-backend', () => ({
    default: {type: 'backend', init() {}, read(language, namespace, callback) { callback(null, {}); }},
}));

describe('translation files', () => {
    it('are loaded under a URL that changes with their content, so no browser keeps an old copy', async () => {
        const {default: i18n} = await import('./i18n.js');
        const loadPath = i18n.options.backend.loadPath;

        const dir = path.resolve(import.meta.dirname, '../public/i18n');
        const hash = createHash('sha256');
        for (const file of readdirSync(dir).filter((name) => name.endsWith('.json')).sort()) {
            hash.update(readFileSync(path.join(dir, file)));
        }
        expect(loadPath).toBe(`/i18n/{{lng}}.json?v=${hash.digest('hex').slice(0, 12)}`);
    });
});