import { describe, expect, it } from 'vitest'
import {
	AUTO_CHECK_INTERVAL_MS,
	browserUpdatesDocsUrl,
	displayVersion,
	downloadAnnouncement,
	formatDownloadProgress,
	formatLastChecked,
	formatReleased,
	formatStartedAt,
	formatStartedWithAge,
	formatUpdatedAt,
	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')
	})
})

describe('formatDownloadProgress', () => {
	it('reads the board sample as 42% and 11 of 26 MB', () => {
		expect(
			formatDownloadProgress({
				percent: 42,
				downloaded_bytes: 11534336,
				total_bytes: 27262976,
			}),
		).toBe('42% · 11 of 26 MB')
	})
})

describe('downloadAnnouncement', () => {
	it.each([
		[0, 'Downloading version 2.3.0-beta'],
		[24, 'Downloading version 2.3.0-beta'],
		[25, 'Downloading version 2.3.0-beta, 25 percent'],
		[49, 'Downloading version 2.3.0-beta, 25 percent'],
		[50, 'Downloading version 2.3.0-beta, 50 percent'],
		[75, 'Downloading version 2.3.0-beta, 75 percent'],
		[100, 'Downloading version 2.3.0-beta, 75 percent'],
	])('reads %i percent as %s', (percent, expected) => {
		expect(downloadAnnouncement('2.3.0-beta', percent)).toBe(expected)
	})
})

describe('browserUpdatesDocsUrl', () => {
	it('points the release url at the Browser updates section of the docs of the same repository', () => {
		expect(
			browserUpdatesDocsUrl('https://git.example/fsylvain/RenewCMS/releases/tag/v2.3.0-beta'),
		).toBe(
			'https://git.example/fsylvain/RenewCMS/src/branch/main/docs/deployment.md#browser-updates',
		)
	})

	it('keeps a url it cannot interpret', () => {
		expect(browserUpdatesDocsUrl('https://git.example/somewhere')).toBe(
			'https://git.example/somewhere',
		)
		expect(browserUpdatesDocsUrl('not a url')).toBe('not a url')
	})
})

describe('restart meta lines', () => {
	const startedAt = '2026-09-30T09:51:00Z'

	it('reads the start time', () => {
		expect(formatStartedAt(startedAt)).toBe('Started at 09:51')
	})

	it('adds how long ago it was', () => {
		expect(formatStartedWithAge(startedAt, new Date('2026-09-30T09:52:30Z'))).toBe(
			'Started at 09:51 · 1 minute ago',
		)
	})

	it.each([
		['2026-09-30T09:52:00Z', 'Updated today at 09:52'],
		['2026-09-29T18:12:00Z', 'Updated yesterday at 18:12'],
		['2026-09-20T18:12:00Z', 'Updated 20 Sep 2026 at 18:12'],
	])('reads the update time %s as %s', (iso, expected) => {
		expect(formatUpdatedAt(iso, new Date('2026-09-30T10:00:00Z'))).toBe(expected)
	})
})