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

import { endOfLocalDay, formatDateParam, parseLocalDateInput, rangeForDay, rangeForLastDays, rangeForPreviousDay, startOfLocalDay } from './dateRanges.ts';

const assertRange = (range: { start: Date; end: Date }, start: string, end: string) => {
  assert.equal(formatDateParam(range.start), start);
  assert.equal(formatDateParam(range.end), end);
  assert.equal(range.start.getHours(), 0);
  assert.equal(range.start.getMinutes(), 0);
  assert.equal(range.start.getSeconds(), 0);
  assert.equal(range.start.getMilliseconds(), 0);
  assert.equal(range.end.getHours(), 23);
  assert.equal(range.end.getMinutes(), 59);
  assert.equal(range.end.getSeconds(), 59);
  assert.equal(range.end.getMilliseconds(), 999);
};

test('Hoje uses full local calendar-day boundaries', () => {
  const today = new Date(2026, 5, 15, 14, 30, 10, 50);

  assertRange(rangeForDay(today), '2026-06-15', '2026-06-15');
});

test('Ontem uses the full previous local calendar day', () => {
  const today = new Date(2026, 5, 15, 0, 5, 0, 0);

  assertRange(rangeForPreviousDay(today), '2026-06-14', '2026-06-14');
});

test('Ultimos 7 dias includes today plus the previous 6 calendar days', () => {
  const today = new Date(2026, 5, 15, 22, 10, 0, 0);

  assertRange(rangeForLastDays(7, today), '2026-06-09', '2026-06-15');
});

test('Ultimos 30 and 90 dias use inclusive calendar-day ranges', () => {
  const today = new Date(2026, 5, 15, 22, 10, 0, 0);

  assertRange(rangeForLastDays(30, today), '2026-05-17', '2026-06-15');
  assertRange(rangeForLastDays(90, today), '2026-03-18', '2026-06-15');
});

test('custom single-day input parses as local date and can build a full-day range', () => {
  const customDate = parseLocalDateInput('2026-06-14');

  assert.ok(customDate);
  assertRange({ start: startOfLocalDay(customDate), end: endOfLocalDay(customDate) }, '2026-06-14', '2026-06-14');
});

test('API date params are stable YYYY-MM-DD strings', () => {
  assert.equal(formatDateParam(new Date(2026, 5, 14, 23, 59, 59, 999)), '2026-06-14');
  assert.equal(parseLocalDateInput('14/06/2026'), null);
});