import http from 'k6/http';
import { check, sleep } from 'k6';
import { BASE, FEEDS, ITEMS, as, me, pick, feedId, p95 } from './lib.js';

// An evening's browsing: twenty-five people at once opening their feed list, All Subscriptions,
// a feed, a search, the Directory and a feed's page in it. Each answer's budget is well above what
// it takes now, so it fails on a query that has started asking once per feed -- the Directory
// asked the database three questions a feed until 0.10.0 -- not on a slow minute. Fifty measured
// the queue for SQLite's one connection (#136) more than any query.
export const options = {
  scenarios: {
    evening: {
      executor: 'ramping-vus',
      stages: [{ duration: '15s', target: 25 }, { duration: '45s', target: 25 }, { duration: '10s', target: 0 }],
    },
  },
  thresholds: {
    http_req_failed: ['rate==0'],
    checks: ['rate==1'],
    // About twice each one's p95 on 2026-10-05 on Tower. SQLite: 236, 118, 133, 119, 259, 312ms;
    // Postgres: 54, 34, 24, 44, 71, 88ms.
    'http_req_duration{name:feeds}': p95(500, 150),
    'http_req_duration{name:all-entries}': p95(300, 100),
    'http_req_duration{name:feed-entries}': p95(300, 100),
    'http_req_duration{name:search}': p95(300, 100),
    'http_req_duration{name:directory}': p95(600, 200),
    'http_req_duration{name:listed}': p95(700, 200),
  },
};

export default function () {
  const u = me();
  const feeds = http.get(`${BASE}/api/feeds`, as(u, 'feeds'));
  check(feeds, { 'your thirty feeds': r => r.status === 200 && r.json().length === 30 });

  const all = http.get(`${BASE}/api/entries?limit=50&filter=all&sort=published&dir=desc`, as(u, 'all-entries'));
  check(all, { 'All Subscriptions, a page of it': r => r.status === 200 && r.json().entries.length === 50 });

  const f = pick(feeds.json());
  const one = http.get(`${BASE}/api/feeds/${f.id}/entries?limit=50&sort=title&dir=asc`, as(u, 'feed-entries'));
  check(one, { 'a feed of yours, every item': r => r.status === 200 && r.json().entries.length === ITEMS });

  // Every generated item mentions the weather, in its text, not its title.
  const found = http.get(`${BASE}/api/entries?q=weather&limit=50`, as(u, 'search'));
  check(found, { 'a search of everything you read': r => r.status === 200 && r.json().total === 30 * ITEMS });

  const dir = http.get(`${BASE}/api/directory`, as(u, 'directory'));
  check(dir, { 'the whole Directory': r => r.status === 200 && r.json().length === FEEDS });

  const listed = http.get(`${BASE}/api/directory/${feedId(Math.floor(Math.random() * FEEDS))}`, as(u, 'listed'));
  check(listed, { "a feed's page in the Directory": r => r.status === 200 && r.json().items.length === ITEMS });

  sleep(1 + Math.random() * 2);
}