import { test } from 'node:test';
import assert from 'node:assert/strict';
import { readFile } from 'node:fs/promises';

const asModule = source => `data:text/javascript;base64,${Buffer.from(source).toString('base64')}`;
const api = asModule(await readFile(new URL('../src/lib/api.js', import.meta.url), 'utf8'));
const source = (await readFile(new URL('../src/lib/suggestions.js', import.meta.url), 'utf8'))
  .replace("'./api'", JSON.stringify(api));

test('suggestions retry failed requests, share the pool, and respect exclusions', async () => {
  const originalFetch = globalThis.fetch;
  let calls = 0;
  globalThis.fetch = async url => {
    calls++;
    if (calls === 1) throw new Error('offline');
    assert.equal(url, '/api/suggestions');
    return { ok: true, json: async () => ({ look: ['Bandana', 'Eyepatch'], smell: ['Tar'] }) };
  };
  try {
    const { getSuggestion } = await import(asModule(source));
    await assert.rejects(getSuggestion('look'), /offline/);
    assert.deepEqual(await Promise.all([
      getSuggestion('look', [' bandana ']), getSuggestion('smell')
    ]), ['Eyepatch', 'Tar']);
    assert.equal(calls, 2);
    assert.equal(await getSuggestion('unknown'), '');
    assert.ok(['Bandana', 'Eyepatch'].includes(await getSuggestion('look', ['Bandana', 'Eyepatch'])));
  } finally {
    globalThis.fetch = originalFetch;
  }
});