const Attachment = require('../../models/Attachment')
const User = require('../../models/User')
const ScrapeQueue = require('@workers/ScrapeQueue')
const Schema = require('@helpers/Schema')
const Robots = require('@helpers/Robots')
const FetchMock = require('../support/fetchMock')
const dns = require('dns').promises

let dnsSpy = null

const testUserName = 'jestTestUserAttachment'
const password = 'Beans19934!!!'

let newUserId = null
let masterKey = null
let newPushKey = null

beforeAll(() => {

	// Find and Delete Previous Test user, log in, get key
	return User.getByUserName(testUserName)
	.then((user) => {
		return User.deleteUser(user?.id, password)
	})
	.then((results) => {

		return User.register(testUserName, password)
	})
	.then(({ token, userId }) => {
		newUserId = userId

		return User.getMasterKey(userId, password)
	})
	.then((newMasterKey) => {
		masterKey = newMasterKey

		return true
	})
	.catch(((error) => {
		console.log(error)
	}))

})


test('Test Generate Push Key', () => {

	return Attachment.generatePushKey(newUserId)
	.then( (pushKey) => {
		newPushKey = pushKey
		return Attachment.generatePushKey(newUserId)
	})
	.then( (pushKey) => {
		// expect a long, defined pushkey
		expect(pushKey).toBeDefined()
		expect(pushKey?.length).toBeGreaterThan(20)
		expect(pushKey).toMatch(newPushKey)
	})
})



test('Test get Push Key Bookmarklet', () => {

	return Attachment.getPushkeyBookmarklet(newUserId)
	.then(( bookmarklet => {
		// Expect a bookmarklet containting URL encoded pushkey from above
		const keyCheck = bookmarklet.includes(encodeURIComponent(newPushKey))

		expect(bookmarklet).toBeDefined()
		expect(keyCheck).toBe(true)
		
	}))
})


//
// These used to hit https://www.solidscribe.com over the live network, so the
// suite needed internet access and the assertion depended on whatever that page
// happened to serve. fetch is mocked against a fixture instead.
//
describe('Push URL', () => {

	beforeEach(() => {
		FetchMock.install()
		// The server marks this at boot; there is no boot phase in tests.
		Schema.__setReady(true)
		Robots.__resetCache()
		dnsSpy = jest.spyOn(dns, 'lookup').mockResolvedValue([{ address: '93.184.216.34', family: 4 }])
		// Real code path, no politeness waiting and no robots lookups.
		ScrapeQueue.configure({ perHostMinSpacingMs: 0, perHostMaxSpacingMs: 0, checkRobots: false })
	})

	afterEach(() => {
		FetchMock.restore()
		dnsSpy.mockRestore()
		ScrapeQueue.__reset()
		Schema.__reset()
	})

	test('scrapes a pushed url into a searchable attachment', () => {

		const url = 'https://www.solidscribe.com/'

		FetchMock.route(url, () => FetchMock.html(`
			<html><head>
				<title>Solid Scribe</title>
				<meta property="og:description" content="An encrypted note taking application.">
			</head><body><p>x</p></body></html>
		`))

		return Attachment.pushUrl(newPushKey, url)
			.then(() => ScrapeQueue.drain())
			.then(() => Attachment.textSearch(newUserId, 'scribe'))
			.then(results => {
				expect(results.length == 1).toBe(true)
				expect(results[0].text).toContain('Solid Scribe')
			})
	})

	test('stores the description so it is searchable too', () => {

		const url = 'https://www.solidscribe.com/encrypted'

		FetchMock.route(url, () => FetchMock.html(`
			<html><head>
				<title>Encryption Page</title>
				<meta property="og:description" content="Notes are sealed with aes256gcm.">
			</head><body><p>x</p></body></html>
		`))

		return Attachment.pushUrl(newPushKey, url)
			.then(() => ScrapeQueue.drain())
			.then(() => Attachment.textSearch(newUserId, 'aes256gcm'))
			.then(results => {
				expect(results.length).toBeGreaterThan(0)
			})
	})

	// The pushmebaby query param was previously passed through with no
	// validation whatsoever.
	test('refuses a pushed url pointing at loopback and makes no request', () => {

		FetchMock.route(/.*/, () => FetchMock.html('<title>should never load</title>'))

		return Attachment.pushUrl(newPushKey, 'http://127.0.0.1:3000/admin')
			.then(result => {
				expect(result).toBe(true)
				expect(FetchMock.callCount()).toBe(0)
			})
	})

	test('refuses a pushed url pointing at the cloud metadata endpoint', () => {

		FetchMock.route(/.*/, () => FetchMock.html('<title>should never load</title>'))

		return Attachment.pushUrl(newPushKey, 'http://169.254.169.254/latest/meta-data/')
			.then(() => {
				expect(FetchMock.callCount()).toBe(0)
			})
	})

	test('resolves truthy for an unknown pushkey without scraping', () => {

		FetchMock.route(/.*/, () => FetchMock.html('<title>nope</title>'))

		return Attachment.pushUrl('not-a-real-pushkey', 'https://example.com/')
			.then(result => {
				expect(result).toBe(true)
				expect(FetchMock.callCount()).toBe(0)
			})
	})

	// Previously this could hang the HTTP response indefinitely.
	test('returns within the budget when the server never responds', () => {

		const url = 'https://www.solidscribe.com/slow'
		FetchMock.route(url, () => FetchMock.hang())

		ScrapeQueue.configure({
			perHostMinSpacingMs: 0,
			perHostMaxSpacingMs: 0,
			checkRobots: false,
			pageTimeoutMs: 80,
			totalBudgetMs: 300,
			retries: 0,
		})

		const startedAt = Date.now()

		return Attachment.pushUrl(newPushKey, url)
			.then(result => {
				expect(result).toBe(true)
				expect(Date.now() - startedAt).toBeLessThan(5000)
			})
	})
})

test('Test Delete Push Key', () => {

	return Attachment.deletePushKey(newUserId)
	.then(( results => {
		// Expect a true bool
		expect(results).toBe(true)
	}))
})

afterAll(done => {
  // Close Database
  const db = require('../../config/database')
  db.end()
  done()
})