import test from 'node:test';
import assert from 'node:assert/strict';

import { createAlertEngine } from '../src/core/alert-engine.mjs';

function createEngine() {
  return createAlertEngine({
    activePair: 'nep141:btc.omft.near->nep141:eure.omft.near',
    priceStaleMs: 30_000,
    inventoryStaleMs: 30_000,
    fundingCreditPendingMs: 300_000,
    fundingStuckMs: 3_600_000,
    evaluationIntervalMs: 5_000,
  });
}

test('alert engine raises and clears stale state transitions', () => {
  const engine = createEngine();

  let transitions = engine.applyEvent('ref.market_price', {
    price_id: 'price-1',
    pair: 'nep141:btc.omft.near->nep141:eure.omft.near',
    eur_per_btc: '100000',
    btc_per_eure: '0.00001',
    observed_at: '2026-04-03T08:00:00.000Z',
  }, '2026-04-03T08:00:00.000Z');
  assert.equal(transitions.length, 1);
  assert.equal(transitions[0].alert_code, 'inventory_snapshot_stale');
  assert.equal(transitions[0].status, 'raised');

  transitions = engine.applyEvent('state.intent_inventory', {
    inventory_id: 'inventory-1',
    account_id: 'solver.near',
    reconciliation_status: 'ok',
    spendable: { 'nep141:btc.omft.near': '1000' },
    synced_at: '2026-04-03T08:00:00.000Z',
  }, '2026-04-03T08:00:00.000Z');
  assert.equal(transitions.length, 1);
  assert.equal(transitions[0].alert_code, 'inventory_snapshot_stale');
  assert.equal(transitions[0].status, 'cleared');

  transitions = engine.evaluate('2026-04-03T08:00:31.000Z');
  assert.equal(transitions.length, 2);
  assert.deepEqual(
    transitions.map((transition) => `${transition.alert_code}:${transition.status}`).sort(),
    [
      'inventory_snapshot_stale:raised',
      'reference_price_stale:raised',
    ],
  );

  transitions = engine.applyEvent('ref.market_price', {
    price_id: 'price-2',
    pair: 'nep141:btc.omft.near->nep141:eure.omft.near',
    eur_per_btc: '100100',
    btc_per_eure: '0.00000999',
    observed_at: '2026-04-03T08:00:32.000Z',
  }, '2026-04-03T08:00:32.000Z');
  assert.equal(transitions.length, 1);
  assert.equal(transitions[0].alert_code, 'reference_price_stale');
  assert.equal(transitions[0].status, 'cleared');
});

test('executor submission failure produces an alert event and clears on recovery', () => {
  const engine = createEngine();
  engine.applyEvent('ref.market_price', {
    price_id: 'price-1',
    pair: 'nep141:btc.omft.near->nep141:eure.omft.near',
    eur_per_btc: '100000',
    btc_per_eure: '0.00001',
    observed_at: '2026-04-03T08:00:00.000Z',
  }, '2026-04-03T08:00:00.000Z');
  engine.applyEvent('state.intent_inventory', {
    inventory_id: 'inventory-1',
    account_id: 'solver.near',
    reconciliation_status: 'ok',
    spendable: { 'nep141:btc.omft.near': '1000' },
    synced_at: '2026-04-03T08:00:00.000Z',
  }, '2026-04-03T08:00:00.000Z');

  let transitions = engine.applyEvent('exec.trade_result', {
    command_id: 'cmd-1',
    quote_id: 'quote-1',
    pair: 'nep141:btc.omft.near->nep141:eure.omft.near',
    status: 'failed',
    result_code: 'submission_failed',
    error: { message: 'relay timeout' },
  }, '2026-04-03T08:00:10.000Z');
  assert.equal(transitions.length, 1);
  assert.equal(transitions[0].alert_code, 'executor_submission_failed');
  assert.equal(transitions[0].status, 'raised');

  transitions = engine.applyEvent('exec.trade_result', {
    command_id: 'cmd-2',
    quote_id: 'quote-2',
    pair: 'nep141:btc.omft.near->nep141:eure.omft.near',
    status: 'submitted',
    result_code: 'quote_response_ok',
  }, '2026-04-03T08:00:20.000Z');
  assert.equal(transitions.length, 1);
  assert.equal(transitions[0].alert_code, 'executor_submission_failed');
  assert.equal(transitions[0].status, 'cleared');
});