// Login ads are a flat 30-day slot, not a daily meter.
//
// The old model charged 100 credits for every day a campaign was shown, with no end date.
// That produced 74-day queues, and every new campaign added 100/day of charges while adding
// no inventory — on 18 Sep, 15 campaigns were charged 1,500 credits against a platform that
// had produced 367 login impressions in its whole life.
import { createRequire } from 'node:module';
const require = createRequire(import.meta.url);
const ads = require('../ads.js');

const ok = [], bad = [];
const t = (n, c, extra) => { (c ? ok : bad).push(n + (c || !extra ? '' : '  -> ' + extra)); };

const r = ads.rates();
t('a slot price is configured', Number(r.loginSlotCredits) > 0, String(r.loginSlotCredits));
t('a slot length is configured', Number(r.loginSlotDays) > 0, String(r.loginSlotDays));
t('the slot is 3,000 credits for 30 days', r.loginSlotCredits === 3000 && r.loginSlotDays === 30,
  r.loginSlotCredits + ' / ' + r.loginSlotDays);

// the price matches what 30 days used to cost, so nobody pays more than before
t('same total as 30 days at the old daily rate',
  r.loginSlotCredits === 30 * r.loginCreditsPerDay,
  r.loginSlotCredits + ' vs ' + (30 * r.loginCreditsPerDay));

// the source guarantees that matter, checked directly — these are the behaviours that stop
// a slot draining against days when the gate produced nothing
const src = require('fs').readFileSync(new URL('../ads.js', import.meta.url), 'utf8');

t('buying a slot charges the whole price up front',
  /Login-ad slot \(/.test(src) && /chargeCredits\(campaign\.id, v\.c\.budget, 'Login-ad slot/.test(src));
t('a slot gets an end date at purchase',
  /out\.expires = Date\.now\(\) \+ days \* 86400000/.test(src));
t('the MySQL daily meter skips slot campaigns',
  /expires IS NULL AND \(last_day_charged/.test(src));
t('the JSON daily meter skips slot campaigns',
  /if \(c\.expires\) continue; \/\/ slot buy/.test(src));
t('a short budget is refused with the slot price named',
  /A login-ad slot is ' \+ cost \+ ' credits for ' \+ days \+ ' days/.test(src));

console.log('PASS ' + ok.length);
for (const b of bad) console.log('FAIL ' + b);
process.exit(bad.length ? 1 : 0);