import { test, before, after } from 'node:test'
import assert from 'node:assert/strict'
import { createHmac } from 'node:crypto'
import fs from 'node:fs/promises'
import os from 'node:os'
import path from 'node:path'
import express from 'express'
import { startFakeGitea } from './helpers/fakeGitea.js'
import { startFakeAppwrite } from './helpers/fakeAppwrite.js'

// Sperre gegen fremde Subdomains: Ein kopiertes Repo (git clone + push, Vorlage) bringt die
// .webklar-preview.json des Originals mit. Ohne Sperre ueberschrieb sein erster Push die
// Preview des Originals (Olzinger -> HSK-Vorlage, 04.10.2026).

const WEBHOOK_TOKEN = 's3cret'
const ORIGINAL = 'WEBklar/Olzinger'
const KOPIE = 'WEBklar/HSK-Kopie'

const previewJson = (subdomain) =>
  JSON.stringify({ enabled: true, type: 'static', branch: 'main', displayName: 'Olzinger', subdomain })

let gitea
let aw
let tmp
let originalCwd
let server
let baseUrl
let foreignSubdomainOwner
let runDeploy
let foreignSubdomainBlock

function pushPayload(repo, { sha, branch = 'main', pusher = 'knso' }) {
  return {
    ref: `refs/heads/${branch}`,
    repository: { full_name: repo, name: repo.split('/')[1], html_url: `${gitea.baseUrl}/${repo}` },
    commits: [{ id: sha, message: `Commit ${sha}`, author: { name: pusher } }],
    pusher: { username: pusher },
    after: sha,
  }
}

async function webhook(payload) {
  const bodyText = JSON.stringify(payload)
  const signature = createHmac('sha256', WEBHOOK_TOKEN).update(bodyText).digest('hex')
  const res = await fetch(`${baseUrl}/webhook/gitea`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json', 'X-Gitea-Signature': signature },
    body: bodyText,
  })
  return { status: res.status, body: await res.json().catch(() => null) }
}

const docOf = (repo) => aw.all('websiteProjects').find((d) => d.repoFullName === repo)

before(async () => {
  gitea = await startFakeGitea({
    repos: [
      { full_name: ORIGINAL },
      { full_name: KOPIE },
      { full_name: 'WEBklar/neu-name' },
      { full_name: 'WEBklar/relaunch-kopie' },
      { full_name: 'WEBklar/eigene-seite' },
    ],
    redirects: { 'knso/alt-name': 'WEBklar/neu-name' },
    contents: {
      [`${ORIGINAL}:.webklar-preview.json`]: previewJson('olzinger'),
      [`${KOPIE}:.webklar-preview.json`]: previewJson('olzinger'),
      'WEBklar/relaunch-kopie:.webklar-preview.json': previewJson('relaunch'),
      // hat schon eine eigene Preview, Config von Hand auf eine fremde Subdomain gestellt
      'WEBklar/eigene-seite:.webklar-preview.json': previewJson('olzinger'),
    },
  })
  aw = await startFakeAppwrite({
    unique: { websiteProjects: ['repoFullName', 'subdomain'] },
    seed: {
      websiteProjects: [
        { $id: 'olz', repoFullName: ORIGINAL, projectName: 'Olzinger', subdomain: 'olzinger', customerId: 'c1', ticketId: 't1', status: 'deployed' },
        // per Gitea umgezogen (alter Name leitet weiter), Dokument noch unter dem alten Namen
        { $id: 'umzug', repoFullName: 'knso/alt-name', projectName: 'Umzug', subdomain: 'umzug-seite' },
        // Repo in Gitea geloescht, Dokument haelt die Subdomain noch
        { $id: 'weg', repoFullName: 'knso/geloescht', projectName: 'Weg', subdomain: 'weg-seite' },
        // gehostet ohne Repo (wie die Relaunch-Vorschau)
        { $id: 'rel', repoFullName: '', projectName: 'WEBklar Relaunch', subdomain: 'relaunch' },
        { $id: 'eigen', repoFullName: 'WEBklar/eigene-seite', projectName: 'Eigene Seite', subdomain: 'eigene-seite', status: 'deployed', provisioningStatus: 'ready' },
      ],
      workorders: [{ $id: 't1', woid: '100130', customerName: 'Olzinger', topic: 'Website', status: 'Open' }],
      customers: [{ $id: 'c1', name: 'Olzinger GmbH' }],
      employees: [{ $id: 'k', displayName: 'Kenso Grimm', shortcode: 'KNSO', email: 'kenso@webklar.com' }],
    },
  })

  originalCwd = process.cwd()
  tmp = await fs.mkdtemp(path.join(os.tmpdir(), 'subdomain-sperre-'))
  process.chdir(tmp)

  Object.assign(process.env, {
    GITEA_BASE_URL: gitea.baseUrl,
    GITEA_API_TOKEN: 'test-token',
    GITEA_WEBHOOK_TOKEN: WEBHOOK_TOKEN,
    APPWRITE_ENDPOINT: aw.endpoint,
    APPWRITE_API_KEY: 'test-key',
    PREVIEW_DEPLOY_ROOT: '',
    TRAEFIK_DYNAMIC_DIR: '',
    PUSH_TIME_SECRET: 'w'.repeat(40),
  })

  const [{ default: giteaWebhookRoutes }, previewDeploy, mailer] = await Promise.all([
    import('../server/routes/webhook/gitea.js'),
    import('../server/services/previewDeploy.js'),
    import('../server/services/mailer.js'),
  ])
  foreignSubdomainOwner = previewDeploy.foreignSubdomainOwner
  runDeploy = previewDeploy.runDeploy
  foreignSubdomainBlock = previewDeploy.foreignSubdomainBlock
  mailer.setMailTransportForTests({ sendMail: async () => ({}) })

  const app = express()
  app.use(express.json({ limit: '2mb', verify: (req, _res, buf) => { req.rawBody = buf } }))
  app.use('/webhook', giteaWebhookRoutes)
  server = await new Promise((resolve) => {
    const s = app.listen(0, '127.0.0.1', () => resolve(s))
  })
  baseUrl = `http://127.0.0.1:${server.address().port}`
})

after(async () => {
  if (server) await new Promise((resolve) => server.close(resolve))
  if (originalCwd) process.chdir(originalCwd)
  await gitea?.close()
  await aw?.close()
  if (tmp) await fs.rm(tmp, { recursive: true, force: true })
})

test('foreignSubdomainOwner: freie Subdomain und eigenes Repo sind nicht fremd', async () => {
  assert.equal(await foreignSubdomainOwner(KOPIE, 'noch-frei'), '')
  assert.equal(await foreignSubdomainOwner(ORIGINAL, 'olzinger'), '')
  assert.equal(await foreignSubdomainOwner('webklar/OLZINGER', 'olzinger'), '', 'Schreibweise egal')
  assert.equal(await foreignSubdomainOwner(KOPIE, ''), '')
})

test('foreignSubdomainOwner: Subdomain eines anderen Repos ist fremd', async () => {
  assert.equal(await foreignSubdomainOwner(KOPIE, 'olzinger'), ORIGINAL)
})

test('foreignSubdomainOwner: in Gitea umgezogenes Repo ist nicht fremd, geloeschtes schon', async () => {
  assert.equal(await foreignSubdomainOwner('WEBklar/neu-name', 'umzug-seite'), '')
  assert.equal(await foreignSubdomainOwner(KOPIE, 'weg-seite'), 'knso/geloescht')
})

test('foreignSubdomainOwner: Projekt ohne Repo haelt seine Subdomain, sperrt sich aber nicht selbst', async () => {
  assert.equal(await foreignSubdomainOwner(KOPIE, 'relaunch'), 'Projekt „WEBklar Relaunch“ (ohne Repo)')
  assert.equal(await foreignSubdomainOwner('', 'relaunch'), '')
})

test('runDeploy verweigert eine fremde Subdomain, bevor irgendetwas geklont wird', async () => {
  const before = gitea.calls.length
  const r = await runDeploy(KOPIE, 'main', { enabled: true, type: 'static', subdomain: 'olzinger' })
  assert.equal(r.deployed, false)
  assert.equal(r.blocked, true)
  assert.equal(r.reason, 'subdomain_foreign')
  assert.equal(r.subdomain, 'olzinger')
  assert.equal(r.owner, ORIGINAL)
  // nur die Besitzer-Pruefung fragt Gitea (nach dem Original), fuer die Kopie wird nichts geholt
  assert.deepEqual(gitea.calls.slice(before).map((c) => `${c.method} ${c.path}`), [`GET /api/v1/repos/${ORIGINAL}`])
})

test('runDeploy: Pruefung nicht moeglich (Appwrite-Fehler) → Deploy laeuft trotzdem', async () => {
  aw.failNext({ method: 'GET', pathIncludes: 'websiteProjects', status: 500 })
  const r = await runDeploy(KOPIE, 'main', { enabled: true, type: 'static', subdomain: 'olzinger' })
  assert.equal(r.blocked, undefined)
  assert.equal(r.reason, 'PREVIEW_DEPLOY_ROOT nicht gesetzt')
})

test('foreignSubdomainBlock ohne failOpen (Webhook): Appwrite-Fehler wird weitergereicht', async () => {
  aw.failNext({ method: 'GET', pathIncludes: 'websiteProjects', status: 500 })
  await assert.rejects(foreignSubdomainBlock(KOPIE, 'olzinger'))
  assert.equal((await foreignSubdomainBlock(KOPIE, 'olzinger')).owner, ORIGINAL)
})

test('runDeploy: eigene Subdomain des uebergebenen Projekts und subdomainChecked brauchen keine Abfrage', async () => {
  const calls = aw.calls.length
  const own = await runDeploy(ORIGINAL, 'main', { subdomain: 'olzinger' }, { project: aw.get('websiteProjects', 'olz') })
  assert.equal(own.reason, 'PREVIEW_DEPLOY_ROOT nicht gesetzt')
  const checked = await runDeploy(KOPIE, 'main', { subdomain: 'olzinger' }, { subdomainChecked: true })
  assert.equal(checked.blocked, undefined, 'der Aufrufer hat schon geprueft')
  assert.equal(aw.calls.length, calls)
})

test('runDeploy: eigene Subdomain laeuft weiter wie bisher', async () => {
  const r = await runDeploy(ORIGINAL, 'main', { enabled: true, type: 'static', subdomain: 'olzinger' })
  assert.equal(r.blocked, undefined)
  assert.equal(r.reason, 'PREVIEW_DEPLOY_ROOT nicht gesetzt')
})

test('Webhook: Push einer Kopie mit fremder Subdomain → kein Deploy, Projekt ohne Preview', async () => {
  const r = await webhook(pushPayload(KOPIE, { sha: 'aaaa1111' }))
  assert.equal(r.status, 200)
  assert.equal(r.body.subdomain, '')
  assert.equal(r.body.previewUrl, '')
  assert.equal(r.body.deploy.blocked, true)
  assert.equal(r.body.deploy.owner, ORIGINAL)

  const kopie = docOf(KOPIE)
  assert.ok(kopie, 'Dokument der Kopie angelegt')
  assert.ok(!kopie.subdomain, 'Kopie bekommt die fremde Subdomain nicht')
  assert.equal(kopie.status, 'synced')
  assert.equal(kopie.projectName, 'HSK-Kopie', 'nicht der Anzeigename aus der fremden Config')

  const original = aw.get('websiteProjects', 'olz')
  assert.equal(original.subdomain, 'olzinger')
  assert.equal(original.status, 'deployed')
})

test('Webhook: Kopie auf anderem Branch bekommt die fremde Subdomain auch nicht', async () => {
  const r = await webhook(pushPayload(KOPIE, { sha: 'bbbb2222', branch: 'entwurf' }))
  assert.equal(r.status, 200)
  assert.equal(r.body.subdomain, '')
  assert.ok(!docOf(KOPIE).subdomain)
})

test('Webhook: Kopie mit der Subdomain eines Projekts ohne Repo wird gesperrt', async () => {
  const r = await webhook(pushPayload('WEBklar/relaunch-kopie', { sha: 'cccc3333' }))
  assert.equal(r.status, 200)
  assert.equal(r.body.deploy.blocked, true)
  assert.equal(aw.get('websiteProjects', 'rel').subdomain, 'relaunch')
})

test('Webhook: Push des Originals deployt wie bisher', async () => {
  const r = await webhook(pushPayload(ORIGINAL, { sha: 'dddd4444' }))
  assert.equal(r.status, 200)
  assert.equal(r.body.subdomain, 'olzinger')
  assert.equal(r.body.deploy.blocked, undefined)
  assert.equal(r.body.deploy.reason, 'PREVIEW_DEPLOY_ROOT nicht gesetzt')
  assert.equal(docOf(ORIGINAL).subdomain, 'olzinger')
})

test('Webhook: Projekt mit eigener Preview und fremder Subdomain in der Config bleibt, wie es ist', async () => {
  const r = await webhook(pushPayload('WEBklar/eigene-seite', { sha: 'ffff6666' }))
  assert.equal(r.status, 200)
  assert.equal(r.body.deploy.blocked, true)
  const doc = aw.get('websiteProjects', 'eigen')
  assert.equal(doc.subdomain, 'eigene-seite')
  assert.equal(doc.status, 'deployed')
  assert.equal(doc.provisioningStatus, 'ready')
  assert.equal(doc.projectName, 'Eigene Seite')
  assert.equal(doc.previewState, 'failed', 'WOMS zeigt den Fehlertext nur bei failed')
  assert.match(doc.previewError, /„olzinger“, die gehört WEBklar\/Olzinger/)
  assert.equal(aw.get('websiteProjects', 'olz').subdomain, 'olzinger')
})