import { test } from 'node:test';
import assert from 'node:assert/strict';
import { CREDIT_RATING_SCALE, ScoringRules } from '../server/config/ScoringConfig';

test('CREDIT_RATING_SCALE covers full spectrum', () => {
  assert.equal(CREDIT_RATING_SCALE.AAA, 10);
  assert.equal(CREDIT_RATING_SCALE.BBB, 7);
  assert.equal(CREDIT_RATING_SCALE.BB, 6);
  assert.equal(CREDIT_RATING_SCALE.D, 1);
});

test('STOCK base gates are fundamental (Graham-style)', () => {
  const { gates } = ScoringRules.STOCK;
  assert.equal(gates.maxPERatio, 15); // Graham's actual rule: 15x trailing earnings
  assert.equal(gates.maxPegGate, 1.0); // Lynch standard: PEG > 1.0 is paying full price
  assert.equal(gates.minQuickRatio, 0.8); // below 0.8 signals liquidity stress
});

test('REIT sector override zeroes out irrelevant weights', () => {
  const reit = ScoringRules.STOCK.SECTOR_OVERRIDE.REIT!;
  assert.equal(reit.weights!.margin, 0);
  assert.equal(reit.weights!.peg, 0);
  assert.equal(reit.weights!.revenue, 0);
  assert.equal(reit.weights!.yield, 5);
});

test('REIT gates disable P/E and PEG', () => {
  const reit = ScoringRules.STOCK.SECTOR_OVERRIDE.REIT!;
  assert.equal(reit.gates!.maxPERatio, 9999);
  assert.equal(reit.gates!.maxPegGate, 9999);
});

test('TECHNOLOGY gates are realistic for mega-cap', () => {
  const tech = ScoringRules.STOCK.SECTOR_OVERRIDE.TECHNOLOGY!;
  assert.equal(tech.gates!.maxDebtToEquity, 2.0);
  assert.equal(tech.gates!.minQuickRatio, 0.8);
});

test('BOND requires investment-grade floor (BBB = 7)', () => {
  assert.equal(ScoringRules.BOND.gates.minCreditRating, 7);
});