import assert from 'node:assert/strict';
import test from 'node:test';
import {
  dateRangeModeLabel,
  getQuickDateRange,
  inferDateRangeMode,
  normalizeDateRange,
} from './date-range.js';

const FRIDAY = new Date(2026, 7, 7, 16, 30, 0);

test('builds shared quick date ranges from local calendar days', () => {
  assert.deepEqual(getQuickDateRange('thisWeek', FRIDAY), { start: '2026-08-03', end: '2026-08-07' });
  assert.deepEqual(getQuickDateRange('thisMonth', FRIDAY), { start: '2026-08-01', end: '2026-08-07' });
  assert.deepEqual(getQuickDateRange('last15', FRIDAY), { start: '2026-07-24', end: '2026-08-07' });
});

test('normalizes date order and publishes consistent labels', () => {
  assert.deepEqual(normalizeDateRange('2026-08-07', '2026-08-01'), { start: '2026-08-01', end: '2026-08-07' });
  assert.equal(dateRangeModeLabel('thisMonth'), '本月');
  assert.equal(dateRangeModeLabel('custom'), '自定义区间');
});

test('restores a quick mode only while URL dates still match that calendar range', () => {
  assert.equal(inferDateRangeMode('2026-08-03', '2026-08-07', FRIDAY), 'thisWeek');
  assert.equal(inferDateRangeMode('2026-08-01', '2026-08-07', FRIDAY), 'thisMonth');
  assert.equal(inferDateRangeMode('2026-08-07', '2026-07-24', FRIDAY), 'last15');
  assert.equal(inferDateRangeMode('2026-08-01', '2026-08-06', FRIDAY), 'custom');
  assert.equal(
    inferDateRangeMode('2026-08-01', '2026-08-07', new Date(2026, 7, 8, 9, 0, 0)),
    'custom',
  );
});