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

import { aggregateWorkEffort, roundHalfHour } from './work-effort-engine';

test('roundHalfHour rounds to nearest half hour', () => {
  assert.equal(roundHalfHour(0.24), 0);
  assert.equal(roundHalfHour(0.25), 0.5);
  assert.equal(roundHalfHour(1.24), 1);
  assert.equal(roundHalfHour(1.25), 1.5);
});

test('aggregateWorkEffort calculates weighted progress by estimate', () => {
  const result = aggregateWorkEffort([
    { estimateHours: 1, actualHours: 0, progress: 0 },
    { estimateHours: 3, actualHours: 1.25, progress: 100 },
  ]);

  assert.equal(result.estimateHours, 4);
  assert.equal(result.actualHours, 1.5);
  assert.equal(result.progress, 75);
});

test('aggregateWorkEffort preserves sub-half-hour AI estimates', () => {
  const result = aggregateWorkEffort([
    { estimateHours: 0.2, actualHours: 0, progress: 50 },
  ]);

  assert.equal(result.estimateHours, 0.2);
  assert.equal(result.progress, 50);
});

test('aggregateWorkEffort falls back to item average when estimates are zero', () => {
  const result = aggregateWorkEffort([
    { estimateHours: 0, actualHours: 0, progress: 50 },
    { estimateHours: 0, actualHours: 0, progress: 100 },
  ]);

  assert.equal(result.progress, 75);
});