moved l-a-s in here

lib/admin/login.js

@@ -0,0 +1,48 @@
+const crypto = require('crypto')
+
+const db = require('../db')
+
+function generateOTP (name) {
+  const otp = crypto.randomBytes(32).toString('hex')
+
+  const sql = 'insert into one_time_passes (token, name) values ($1, $2)'
+
+  return db.none(sql, [otp, name])
+  .then(() => otp)
+}
+
+function validateOTP (otp) {
+  const sql = `delete from one_time_passes
+    where token=$1
+    returning name, created < now() - interval '1 hour' as expired`
+
+  return db.one(sql, [otp])
+  .then(r => ({success: !r.expired, expired: r.expired, name: r.name}))
+  .catch(() => ({success: false, expired: false}))
+}
+
+function register (otp) {
+  return validateOTP(otp)
+  .then(r => {
+    if (!r.success) return r
+
+    const token = crypto.randomBytes(32).toString('hex')
+    const sql = 'insert into user_tokens (token, name) values ($1, $2)'
+
+    return db.none(sql, [token, r.name])
+    .then(() => ({success: true, token: token}))
+  })
+  .catch(() => ({success: false, expired: false}))
+}
+
+function authenticate (token) {
+  const sql = 'select token from user_tokens where token=$1'
+
+  return db.one(sql, [token]).then(() => true).catch(() => false)
+}
+
+module.exports = {
+  generateOTP,
+  register,
+  authenticate
+}