import { vi } from 'vitest'
import { defineComponent, nextTick, ref } from 'vue'
import { flushPromises, mount } from '@vue/test-utils'
import { createPinia, setActivePinia } from 'pinia'
import uiPlugin from '@nuxt/ui/vue-plugin'
import ImageUploader from '../ImageUploader.vue'
import { useApi } from '@/composables/useApi'
import type { MediaItem } from '@/composables/useMedia'
import { DESKTOP_WIDTH, setViewportWidth } from './viewport'
import { fixture, textOf } from '@/views/__tests__/mediaTestKit'

export { textOf }

export const FIRST_PAGE_CURSOR = 'c24'
export const PICKER_COUNTS = { all: 48, unused: 2, duplicates: 2 }

export function pageBody(
	items: MediaItem[] = fixture(),
	next_cursor: string | null = FIRST_PAGE_CURSOR,
) {
	return { items, next_cursor, counts: PICKER_COUNTS }
}

export function secondPage() {
	return fixture().map((item) => ({
		...item,
		id: item.id + 12,
		filename: `more-${item.filename}`,
		url: `/media/more-${item.filename}`,
	}))
}

export interface PickerRoutes {
	list?: (query: URLSearchParams) => unknown
	hash?: (hash: string) => unknown
}

export const apiKit = { request: vi.fn() }

export function installApi(routes: PickerRoutes = {}) {
	apiKit.request = vi.fn(async (path: string) => {
		const url = new URL(path, 'http://localhost')
		const hash = url.searchParams.get('hash')
		if (hash !== null) {
			return (routes.hash ?? (() => pageBody([], null)))(hash)
		}
		return (routes.list ?? (() => pageBody()))(url.searchParams)
	})
	vi.mocked(useApi).mockReturnValue({
		getMe: vi.fn().mockResolvedValue({ verified: true, username: 'marta', id: 1 }),
		request: apiKit.request,
	})
}

export function installEmptyLibrary(routes: PickerRoutes = {}) {
	installApi({ list: () => pageBody([], null), ...routes })
}

export function listCalls() {
	return apiKit.request.mock.calls
		.map(([path]) => new URL(path as string, 'http://localhost'))
		.filter((url) => url.pathname === '/v1/media/' && !url.searchParams.has('hash'))
		.map((url) => url.searchParams)
}

export function hashCalls() {
	return apiKit.request.mock.calls
		.map(([path]) => new URL(path as string, 'http://localhost'))
		.filter((url) => url.searchParams.has('hash'))
		.map((url) => url.searchParams.get('hash'))
}

export const Host = defineComponent({
	components: { ImageUploader },
	props: {
		initialFile: { type: Object as () => File | null, default: null },
		inArticleIds: { type: Array as () => number[], default: () => [1, 4] },
	},
	emits: ['uploaded', 'inserted', 'close'],
	setup(_props, { emit }) {
		const open = ref(false)
		return {
			open,
			onUploaded: (item: MediaItem) => emit('uploaded', item),
			onInserted: (item: MediaItem, alt: string, src: string) =>
				emit('inserted', item, alt, src),
			onClose: () => emit('close'),
		}
	},
	template: `<ImageUploader v-model:open="open" :initial-file="initialFile" :in-article-ids="inArticleIds" @uploaded="onUploaded" @inserted="onInserted" @close="onClose" />`,
})

export function mountUploader(
	props: { initialFile?: File | null; inArticleIds?: number[] } = {},
	width = DESKTOP_WIDTH,
) {
	setViewportWidth(width)
	setActivePinia(createPinia())
	return mount(Host, {
		props,
		global: { plugins: [uiPlugin] },
		attachTo: document.body,
	})
}

export async function openUploader(wrapper: ReturnType<typeof mountUploader>) {
	;(wrapper.vm as unknown as { open: boolean }).open = true
	await nextTick()
	await nextTick()
	await flushPromises()
}

export async function settle() {
	await flushPromises()
	await nextTick()
	await flushPromises()
}

export function tabButtons() {
	return Array.from(document.body.querySelectorAll<HTMLElement>('[role="tab"]'))
}

export function tabButton(label: string) {
	return tabButtons().find((element) => textOf(element) === label)
}

export function selectedTab() {
	return tabButtons().find((element) => element.getAttribute('aria-selected') === 'true')
}

export function tiles() {
	return Array.from(document.body.querySelectorAll<HTMLButtonElement>('[data-picker-tile]'))
}

export function tile(filename: string) {
	return tiles().find((element) =>
		element.getAttribute('aria-label')?.startsWith(`${filename},`),
	)!
}

export function skeletonTiles() {
	return document.body.querySelectorAll('[data-testid="picker-skeleton-tile"]')
}

export function findButton(label: string) {
	return Array.from(document.body.querySelectorAll<HTMLButtonElement>('button')).find(
		(button) => textOf(button) === label,
	)
}

export async function click(element: Element | null | undefined) {
	;(element as HTMLElement).click()
	await settle()
}

export async function clickTab(label: string) {
	tabButton(label)!.dispatchEvent(new MouseEvent('mousedown', { bubbles: true, button: 0 }))
	await settle()
}

export async function selectTile(filename: string) {
	await click(tile(filename))
}

export function altField() {
	return document.body.querySelector<HTMLInputElement>(
		'input[placeholder="e.g. North wall of the kitchen before plastering"]',
	)
}

export async function typeInto(input: HTMLInputElement, value: string) {
	input.value = value
	input.dispatchEvent(new Event('input', { bubbles: true }))
	await nextTick()
}

export function searchField() {
	return document.body.querySelector<HTMLInputElement>('input[aria-label="Search by filename"]')!
}

export function dialogText() {
	return textOf(document.body.querySelector('[role="dialog"]'))
}

export function modalOpen() {
	return document.body.querySelector('[role="dialog"]') !== null
}

export function press(element: Element, key: string) {
	element.dispatchEvent(new KeyboardEvent('keydown', { key, bubbles: true, cancelable: true }))
}