import { describe, expect, it } from 'vitest';
import { resolveMaxCount, resolveTimelineHours } from '../lib/analytics';

describe('resolveMaxCount', () => {
  it('defaults to 1 for empty input', () => {
    expect(resolveMaxCount([])).toBe(1);
  });

  it('returns the highest count', () => {
    expect(resolveMaxCount([2, 5, 3])).toBe(5);
  });

  it('never returns less than 1', () => {
    expect(resolveMaxCount([0])).toBe(1);
  });
});

describe('resolveTimelineHours', () => {
  it('uses fallback when data is missing', () => {
    expect(resolveTimelineHours([], 12)).toBe(12);
  });

  it('calculates rounded hours from timestamps', () => {
    const start = new Date('2024-01-01T10:00:00Z').toISOString();
    const end = new Date('2024-01-01T21:00:00Z').toISOString();
    expect(resolveTimelineHours([start, end], 12)).toBe(11);
  });

  it('never returns less than 1', () => {
    const start = new Date('2024-01-01T10:00:00Z').toISOString();
    expect(resolveTimelineHours([start, start], 12)).toBe(1);
  });
});