import { test, before, beforeEach } from 'node:test'
import assert from 'node:assert/strict'
import { mailSink } from './support/mailSink.js'

// K17: Hinweis an den Kunden, wenn das Team im Portal-Chat schreibt
let sendCustomerChatNotice, resetChatNoticeThrottleForTests, setMailTransportForTests
let sink

const customer = (extra = {}) => ({ $id: 'c1', name: 'Emma Schatz', email: 'emma@example.com', portalAccessEnabled: true, ...extra })

before(async () => {
  Object.assign(process.env, { APPWRITE_ENDPOINT: 'http://127.0.0.1:9/v1', SMTP_HOST: '', CHAT_NOTIFY_EMAILS: 'team@webklar.invalid', PORTAL_PUBLIC_URL: 'https://project.webklar.com' })
  ;({ sendCustomerChatNotice, resetChatNoticeThrottleForTests, setMailTransportForTests } = await import('../server/services/mailer.js'))
})

beforeEach(() => {
  sink = mailSink()
  setMailTransportForTests(sink)
  resetChatNoticeThrottleForTests()
})

test('Kunde bekommt K17 mit Nachricht und Portal-Link, ohne BCC ans Team', async () => {
  const result = await sendCustomerChatNotice(customer(), { sender: 'Kenso Grimm', text: 'Hallo <Emma>\nZeile 2' })
  assert.deepEqual(result, { sent: true, to: 'emma@example.com' })
  assert.equal(sink.sent.length, 1)
  const mail = sink.sent[0]
  assert.deepEqual(mail.to.map((t) => t.address), ['emma@example.com'])
  assert.ok(!mail.bcc, "keine Kopie ans Team")
  assert.equal(mail.subject, 'Neue Nachricht von WEBklar')
  assert.match(mail.html, /Hallo Emma Schatz,<br>Kenso Grimm hat Dir/)
  assert.match(mail.html, /Hallo &lt;Emma&gt;<br>Zeile 2/)
  assert.match(mail.html, /href="https:\/\/project\.webklar\.com\/dashboard\.html#chat"/)
  assert.match(mail.text, /Hallo <Emma>\nZeile 2/)
})

test('höchstens eine Mail je Kunde im Zeitfenster, andere Kunden unabhängig', async () => {
  assert.equal((await sendCustomerChatNotice(customer(), { sender: 'A', text: 'eins' })).sent, true)
  assert.deepEqual(await sendCustomerChatNotice(customer(), { sender: 'A', text: 'zwei' }), { sent: false, reason: 'throttled', to: 'emma@example.com' })
  assert.equal((await sendCustomerChatNotice(customer({ $id: 'c2', email: 'b@example.com' }), { sender: 'A', text: 'x' })).sent, true)
  assert.equal(sink.sent.length, 2)
})

test('ohne E-Mail oder Portalzugang keine Mail', async () => {
  assert.deepEqual(await sendCustomerChatNotice(customer({ email: '' }), { text: 'x' }), { sent: false, reason: 'keine E-Mail-Adresse' })
  assert.deepEqual(await sendCustomerChatNotice(customer({ portalAccessEnabled: false }), { text: 'x' }), { sent: false, reason: 'kein Portalzugang' })
  assert.equal(sink.sent.length, 0)
})

test('Versandfehler: Nachricht bleibt, nächster Versuch ist nicht gesperrt', async () => {
  setMailTransportForTests({ sendMail: async () => { throw new Error('SMTP weg') } })
  assert.deepEqual(await sendCustomerChatNotice(customer(), { text: 'x' }), { sent: false, reason: 'SMTP weg', to: 'emma@example.com' })
  setMailTransportForTests(sink)
  assert.equal((await sendCustomerChatNotice(customer(), { text: 'y' })).sent, true)
})