import { describe, expect, it } from 'vitest'

import { getEventScheduleConstraints } from '@/components/events/schedule/eventScheduleConstraints'

const localIso = (year: number, month: number, day: number) => new Date(year, month, day).toISOString()

describe('getEventScheduleConstraints', () => {
  it('uses the next minute for a start today and start + 1 for a same-day end', () => {
    const today = localIso(2026, 7, 11)
    const result = getEventScheduleConstraints({
      now: new Date(2026, 7, 11, 10, 30),
      startDate: today,
      startTime: 12 * 60,
      endDate: today,
    })

    expect(result.startMinimumTime).toBe(10 * 60 + 31)
    expect(result.endMinimumTime).toBe(12 * 60 + 1)
  })

  it('does not constrain a future start or an end on a later day', () => {
    const result = getEventScheduleConstraints({
      now: new Date(2026, 7, 11, 10, 30),
      startDate: localIso(2026, 7, 12),
      startTime: 12 * 60,
      endDate: localIso(2026, 7, 13),
    })

    expect(result.startMinimumTime).toBe(0)
    expect(result.endMinimumTime).toBe(0)
  })

  it('caps the next-minute boundary at the end of the day', () => {
    const today = localIso(2026, 7, 11)
    const result = getEventScheduleConstraints({
      now: new Date(2026, 7, 11, 23, 59),
      startDate: today,
      endDate: today,
    })

    expect(result.startMinimumTime).toBe(1440)
    expect(result.endMinimumTime).toBe(1)
  })

  it('ignores invalid or missing date values', () => {
    const result = getEventScheduleConstraints({
      now: new Date(2026, 7, 11, 10, 30),
      startDate: 'invalid',
      endDate: undefined,
    })

    expect(result.startMinimumTime).toBe(0)
    expect(result.endMinimumTime).toBe(0)
  })
})