harheimertc/server/api/auth/register-passkey.post.js

import { verifyRegistrationResponse } from '@simplewebauthn/server'
import crypto from 'crypto'
import bcrypt from 'bcryptjs'
import nodemailer from 'nodemailer'
import { readUsers, writeUsers } from '../../utils/auth.js'
import { getWebAuthnConfig } from '../../utils/webauthn-config.js'
import { consumePreRegistration } from '../../utils/webauthn-challenges.js'
import { toBase64Url } from '../../utils/webauthn-encoding.js'
import { writeAuditLog } from '../../utils/audit-log.js'

export default defineEventHandler(async (event) => {
  const body = await readBody(event)
  const registrationId = String(body?.registrationId || '')
  const response = body?.credential

  if (!registrationId || !response) {
    throw createError({ statusCode: 400, statusMessage: 'Ungültige Anfrage' })
  }

  const pre = consumePreRegistration(registrationId)
  if (!pre) {
    throw createError({ statusCode: 400, statusMessage: 'Registrierungs-Session abgelaufen. Bitte erneut versuchen.' })
  }

  const { challenge, userId, name, email, phone } = pre

  const users = await readUsers()
  if (users.some(u => String(u.email || '').toLowerCase() === String(email).toLowerCase())) {
    throw createError({ statusCode: 409, message: 'Ein Benutzer mit dieser E-Mail-Adresse existiert bereits' })
  }

  const { origin, rpId, requireUV } = getWebAuthnConfig()

  const verification = await verifyRegistrationResponse({
    response,
    expectedChallenge: challenge,
    expectedOrigin: origin,
    expectedRPID: rpId,
    requireUserVerification: requireUV
  })

  const { verified, registrationInfo } = verification
  if (!verified || !registrationInfo) {
    await writeAuditLog('auth.passkey.prereg.failed', { email })
    throw createError({ statusCode: 400, statusMessage: 'Passkey-Registrierung fehlgeschlagen' })
  }

  const {
    credentialID,
    credentialPublicKey,
    counter,
    credentialDeviceType,
    credentialBackedUp
  } = registrationInfo

  const credentialId = toBase64Url(credentialID)
  const publicKey = toBase64Url(credentialPublicKey)

  // Dummy password hash (login via password isn't intended)
  const salt = await bcrypt.genSalt(10)
  const hashedPassword = await bcrypt.hash(crypto.randomBytes(32).toString('hex'), salt)

  const newUser = {
    id: String(userId),
    email: String(email).toLowerCase(),
    password: hashedPassword,
    name,
    phone: phone || '',
    role: 'mitglied',
    active: false,
    created: new Date().toISOString(),
    lastLogin: null,
    passkeys: [
      {
        id: `${Date.now()}`,
        credentialId,
        publicKey,
        counter: Number(counter) || 0,
        transports: Array.isArray(response.transports) ? response.transports : undefined,
        deviceType: credentialDeviceType,
        backedUp: !!credentialBackedUp,
        createdAt: new Date().toISOString(),
        lastUsedAt: null,
        name: 'Passkey'
      }
    ]
  }

  users.push(newUser)
  await writeUsers(users)

  await writeAuditLog('auth.passkey.prereg.success', { email, userId: newUser.id })

  // Send notification emails (same behavior as password registration)
  try {
    const smtpUser = process.env.SMTP_USER
    const smtpPass = process.env.SMTP_PASS

    if (smtpUser && smtpPass) {
      const transporter = nodemailer.createTransport({
        host: process.env.SMTP_HOST || 'smtp.gmail.com',
        port: process.env.SMTP_PORT || 587,
        secure: false,
        auth: { user: smtpUser, pass: smtpPass }
      })

      await transporter.sendMail({
        from: process.env.SMTP_FROM || 'noreply@harheimertc.de',
        to: process.env.SMTP_ADMIN || 'j.dichmann@gmx.de',
        subject: 'Neue Registrierung (Passkey) - Harheimer TC',
        html: `
          <h2>Neue Registrierung (Passkey)</h2>
          <p>Ein neuer Benutzer hat sich registriert und wartet auf Freigabe:</p>
          <ul>
            <li><strong>Name:</strong> ${name}</li>
            <li><strong>E-Mail:</strong> ${email}</li>
            <li><strong>Telefon:</strong> ${phone || 'Nicht angegeben'}</li>
            <li><strong>Login:</strong> Passkey (ohne Passwort)</li>
          </ul>
          <p>Bitte prüfen Sie die Registrierung im CMS.</p>
        `
      })

      await transporter.sendMail({
        from: process.env.SMTP_FROM || 'noreply@harheimertc.de',
        to: email,
        subject: 'Registrierung erhalten - Harheimer TC',
        html: `
          <h2>Registrierung erhalten</h2>
          <p>Hallo ${name},</p>
          <p>vielen Dank für Ihre Registrierung beim Harheimer TC!</p>
          <p>Ihre Anfrage wird vom Vorstand geprüft. Sie erhalten eine E-Mail, sobald Ihr Zugang freigeschaltet wurde.</p>
          <br>
          <p>Mit sportlichen Grüßen,<br>Ihr Harheimer TC</p>
        `
      })
    }
  } catch (emailError) {
    console.error('E-Mail-Versand fehlgeschlagen:', emailError)
  }

  return {
    success: true,
    message: 'Registrierung erfolgreich. Sie erhalten eine E-Mail, sobald Ihr Zugang freigeschaltet wurde.'
  }
})