wip(backend): Added MFA support

sites/backend/src/utils/mfa.mjs

@@ -0,0 +1,30 @@
+import qrcode from 'qrcode'
+import { authenticator } from '@otplib/preset-default'
+
+const dark = '#AAAAAA'
+const light = '#EEEEEE'
+/*
+ * Exporting this closure that makes sure we have access to the
+ * instantiated config
+ */
+export const mfa = ({ service }) => ({
+  mfa: {
+    enroll: async (user) => {
+      const secret = authenticator.generateSecret()
+      const otpauth = authenticator.keyuri(user, service, secret)
+      let svg
+      try {
+        svg = await qrcode.toString(otpauth, {
+          type: 'svg',
+          color: { dark, light },
+        })
+      } catch (err) {
+        console.log(err)
+      }
+      svg = svg.replace(dark, 'currentColor').replace(light, 'none')
+
+      return { secret, otpauth, qrcode: svg }
+    },
+    verify: (token, secret) => authenticator.check(token, secret),
+  },
+})