import { describe, expect, it } from 'vitest'
import {
	AUTO_CHECK_INTERVAL_MS,
	displayVersion,
	formatLastChecked,
	formatReleased,
	isCheckDue,
} from '@/lib/updateFormat'

describe('displayVersion', () => {
	it.each([
		['v2.3.0-beta', '2.3.0-beta'],
		['2.0.0-beta', '2.0.0-beta'],
		['v2.5.0', '2.5.0'],
	])('shows %s as %s', (tag, expected) => {
		expect(displayVersion(tag)).toBe(expected)
	})
})

describe('formatLastChecked', () => {
	const now = new Date(2026, 8, 30, 12, 0, 0)

	it('reads today at the local time', () => {
		expect(formatLastChecked(new Date(2026, 8, 30, 9, 41).toISOString(), now)).toBe(
			'Last checked today at 09:41',
		)
	})

	it('reads yesterday at the local time', () => {
		expect(formatLastChecked(new Date(2026, 8, 29, 18, 12).toISOString(), now)).toBe(
			'Last checked yesterday at 18:12',
		)
	})

	it('reads an older day as an absolute date', () => {
		expect(formatLastChecked(new Date(2026, 8, 20, 7, 5).toISOString(), now)).toBe(
			'Last checked 20 Sep 2026 at 07:05',
		)
	})
})

describe('isCheckDue', () => {
	const now = Date.parse('2026-09-30T12:00:00Z')

	it('is due when never checked', () => {
		expect(isCheckDue(null, now)).toBe(true)
	})

	it('is due once the last check is older than 24 hours', () => {
		expect(isCheckDue(new Date(now - AUTO_CHECK_INTERVAL_MS - 1000).toISOString(), now)).toBe(
			true,
		)
	})

	it('is not due when the last check is under 24 hours old', () => {
		expect(isCheckDue(new Date(now - AUTO_CHECK_INTERVAL_MS + 1000).toISOString(), now)).toBe(
			false,
		)
	})
})

describe('formatReleased', () => {
	it('reads the release date as an absolute date', () => {
		expect(formatReleased('2026-09-24T08:00:00Z')).toBe('Released 24 Sep 2026')
	})
})