'use strict';
const assert = require('node:assert/strict');
const Score = require('../js/skin-score');
const dims = (firm, vita, stab) => ({ firm: { S: firm }, vita: { S: vita }, stab: { S: stab } });
for (const [scores, total] of [
  [[8, 9, 8.5], 85], [[10, 10, 10], 99], [[7, 7, 7], 70],
  [[10, 7, 7], 82], [[7, 10, 7], 79], [[7, 7, 10], 79],
  [[8.01, 8.82, 8], 83], [[7.69, 8.72, 9.1], 84]
]) assert.equal(Score.weightedTotal(dims(...scores)), total, scores.join('/'));
for (const invalid of [null, undefined, NaN, Infinity, -Infinity, '9', -1, 11]) {
  for (const key of ['firm', 'vita', 'stab']) {
    const d = dims(8, 9, 8.5); d[key].S = invalid;
    assert.equal(Score.weightedTotal(d), null, 'no reweighting invalid/missing ' + key);
  }
}
for (const d of [null, {}, { firm: { S: 9 }, vita: { S: 8 } }]) assert.equal(Score.weightedTotal(d), null);
const input = JSON.parse(JSON.stringify(Score.MOCK_RESULT));
const before = JSON.stringify(input);
const expected = Score.buildViewModel(input, Score.MOCK_SIDE, {});
assert.equal(expected.totalRule, 'dimensions-433-v1');
assert.equal(JSON.stringify(input), before, 'preserve raw upstream data');
for (const value of [0, 100, null, undefined]) {
  const r = JSON.parse(JSON.stringify(input));
  if (value === undefined) delete r.score_info.total_score; else r.score_info.total_score = value;
  const changed = Score.buildViewModel(r, Score.MOCK_SIDE, {});
  assert.equal(changed.total, expected.total, 'API total has no influence');
  assert.deepEqual(changed.dims, expected.dims);
  assert.deepEqual(changed.recommendation, expected.recommendation);
}
assert.equal(Score.buildViewModel({}, null, {}).total, null);
console.log('PASS weighted total: 4:3:3, integer/half rounding, missing/invalid dimensions, API total ignored, source/scores/recommendation unchanged');