import { afterEach, describe, expect, it, vi } from 'vitest'
import { flushPromises } from '@vue/test-utils'
import {
	button,
	callsTo,
	chooseMenuItem,
	click,
	createBackend,
	dialog,
	failWith,
	mountDirectory,
	networkFailure,
	openRowMenu,
	pending,
	rowTexts,
	textOf,
	unmountDirectory,
} from './directoryTestKit'

vi.mock('@/composables/useApi', async (importOriginal) => {
	const actual = await importOriginal<typeof import('@/composables/useApi')>()
	return { ...actual, useApi: vi.fn() }
})

afterEach(unmountDirectory)

async function openDelete(name: string, backend = createBackend()) {
	await mountDirectory('sites', '/settings/sites', { backend })
	await openRowMenu(name)
	await chooseMenuItem('Delete…')
	return backend
}

function box() {
	return dialog()!
}

function trigger() {
	return box().querySelector<HTMLElement>('button[aria-haspopup="listbox"]')!
}

describe('Sites delete: site with articles', () => {
	it('explains, defaults the destination to the default site and shows the move summary', async () => {
		await openDelete('Journal')

		const text = textOf(box())
		expect(box().getAttribute('role')).toBe('alertdialog')
		expect(text).toContain('Delete this site?')
		expect(text).toContain(
			'"Journal" will be deleted. 38 articles belong to it, so choose a site to move them to. This can\'t be undone.',
		)
		expect(text).toContain('Move articles to')
		expect(textOf(trigger())).toBe('Renew · renew.example')
		expect(text).toContain(
			'38 articles will move to Renew. Their canonical host changes to renew.example.',
		)
		expect(button('Cancel', box())).toBeTruthy()
		expect(button('Move 38 articles and delete', box())).toBeTruthy()
	})
})

describe('Sites delete: choose destination', () => {
	it('does not offer the deleted site and shows the name and the host on each option', async () => {
		await openDelete('Journal')
		trigger().click()
		await flushPromises()

		const options = Array.from(box().querySelectorAll('[role="option"]')).map((option) =>
			textOf(option),
		)
		expect(options).toEqual([
			'Renew renew.example',
			'Projects projects.example',
			'Archive archive.example',
		])
	})
})

describe('Sites delete: with articles succeeds', () => {
	it('sends one DELETE with reassign_to, reads Moving articles… and toasts', async () => {
		const backend = createBackend()
		const hold = pending<unknown>()
		backend.responders['DELETE /v1/site/2'] = () => hold.promise
		await openDelete('Journal', backend)
		await click('Move 38 articles and delete', box())

		expect(button('Moving articles…', box())).toBeTruthy()
		hold.resolve(undefined)
		await flushPromises()

		const deletes = callsTo(backend, 'DELETE', '/v1/site/2')
		expect(deletes).toHaveLength(1)
		expect(deletes[0]!.query.get('reassign_to')).toBe('1')
		expect(dialog()).toBeNull()
		expect(rowTexts().join(' ')).not.toContain('Journal')
		expect(document.body.textContent).toContain('Site deleted')
		expect(document.body.textContent).toContain('38 articles moved to Renew.')
	})
})

describe('Sites delete: no articles', () => {
	it('asks a plain confirmation with no select and sends no reassign_to', async () => {
		const backend = await openDelete('Archive')

		const text = textOf(box())
		expect(text).toContain('Delete this site?')
		expect(text).toContain(
			'"Archive" will be deleted. No articles belong to it. This can\'t be undone.',
		)
		expect(trigger()).toBeNull()
		expect(button('Delete site', box())).toBeTruthy()

		await click('Delete site', box())

		const deletes = callsTo(backend, 'DELETE', '/v1/site/4')
		expect(deletes).toHaveLength(1)
		expect(deletes[0]!.query.has('reassign_to')).toBe(false)
		expect(rowTexts().join(' ')).not.toContain('Archive')
	})
})

describe.each([
	['status 500', failWith(500)],
	['a network error', networkFailure],
])('Sites delete: failure with %s', (_name, responder) => {
	it('keeps the dialog open with the notice and enables the buttons again', async () => {
		const backend = createBackend()
		backend.responders['DELETE /v1/site/2'] = responder
		await openDelete('Journal', backend)
		await click('Move 38 articles and delete', box())

		const alert = textOf(box().querySelector('[role="alert"]'))
		expect(alert).toContain("Couldn't delete the site")
		expect(alert).toContain('Nothing was changed. Try again in a moment.')
		expect(button('Cancel', box())!.hasAttribute('disabled')).toBe(false)
		expect(button('Move 38 articles and delete', box())!.hasAttribute('disabled')).toBe(false)
	})
})

describe('Sites delete: server refusals', () => {
	it('keeps the dialog open and asks for a destination on 409 site_has_articles', async () => {
		const backend = createBackend()
		backend.responders['DELETE /v1/site/2'] = failWith(409, 'site_has_articles')
		await openDelete('Journal', backend)
		await click('Move 38 articles and delete', box())

		expect(dialog()).not.toBeNull()
		expect(textOf(box())).toContain('Choose where the articles go. This site has 38 articles.')
	})

	it('closes and toasts on 403 default_site', async () => {
		const backend = createBackend()
		backend.responders['DELETE /v1/site/2'] = failWith(403, 'default_site')
		await openDelete('Journal', backend)
		await click('Move 38 articles and delete', box())

		expect(dialog()).toBeNull()
		expect(document.body.textContent).toContain(
			"The default site can't be deleted. Make another site the default first.",
		)
	})

	it('closes, removes the row and toasts on 404', async () => {
		const backend = createBackend()
		backend.responders['DELETE /v1/site/2'] = failWith(404, 'site_not_found')
		await openDelete('Journal', backend)
		await click('Move 38 articles and delete', box())

		expect(dialog()).toBeNull()
		expect(rowTexts().join(' ')).not.toContain('Journal')
		expect(document.body.textContent).toContain('That site no longer exists')
	})
})