// Unit coverage for sizing/risk product contracts used by tRPC routers.
import { test } from 'node:test';
import { strict as assert } from 'node:assert';
import { sizePosition } from '../../sizing/SizingEngine.ts';
import { assessRisk, ADR_0007_FOOTER } from '../RiskEngine.ts';

test('sizing.compute contract: math implies shares, ADR-0007 footer-ready', () => {
  const result = sizePosition(
    { symbol: 'NVDA', tier: 'B', riskFraction: 0.01, stopPerShare: 5 },
    { equity: 100_000, complexity: 'beginner' },
    {
      holdings: [],
      regime: 'trending-up',
      clusterCaps: { uncategorized: 25_000 },
      aStarUnlocked: false,
    },
  );
  // 100000 * 0.01 / 5 = 200 shares * B(×1) = 200
  assert.equal(result.shares, 200);
  assert.equal(result.blocked, false);
  assert.ok(result.explanations.some((e) => /math implies/i.test(e)));
  assert.ok(result.explanations.some((e) => /not investment advice/i.test(e)));
});

test('risk.posture contract: peak breach yields halt + consideration', () => {
  const posture = assessRisk({
    portfolio: [
      { symbol: 'NVDA', shares: 100, avgCost: 100, cluster: 'uncategorized', stopPrice: 90, rewardTarget: 130 },
    ],
    account: { equity: 80_000, drawdownTolerancePct: 15, complexity: 'beginner' },
    peakEquity: 100_000,
    regime: 'trending-down',
    sizingContext: { clusterCaps: { uncategorized: 20_000 } },
  });
  assert.equal(posture.halted, true);
  assert.ok(posture.recommendedActions.length > 0);
  assert.ok(posture.recommendedActions.every((a) => a.explanation.includes(ADR_0007_FOOTER)
    || a.explanation.toLowerCase().includes('trade-off')));
  assert.ok(!JSON.stringify(posture.recommendedActions).toLowerCase().includes('you should sell'));
});