chore: use monorepo organization

packages/server/lib/pairing.js

@@ -0,0 +1,74 @@
+const fs = require('fs')
+const pify = require('pify')
+const readFile = pify(fs.readFile)
+const db = require('./db')
+const logger = require('./logger')
+const uuid = require('uuid')
+
+const CA_PATH = process.env.CA_PATH
+
+// A machine on an older version (no multicassette code) could be paired with a server with multicassette code.
+// This makes sure that the server stores a default value
+const DEFAULT_NUMBER_OF_CASSETTES = 2
+const DEFAULT_NUMBER_OF_RECYCLERS = 0
+
+function pullToken (token) {
+  const sql = `delete from pairing_tokens
+    where token=$1
+    returning name, created < now() - interval '1 hour' as expired`
+  return db.one(sql, [token])
+}
+
+// TODO new-admin: We should remove all configs related to that device. This can get tricky.
+function unpair (deviceId) {
+  return db.tx(t => 
+    t.none(`INSERT INTO unpaired_devices(id, device_id, name, model, paired, unpaired)
+      SELECT $1, $2, d.name, d.model, d.created, now()
+      FROM devices d
+      WHERE device_id=$2`
+    , [uuid.v4(), deviceId])
+    .then(() => {
+        const q1 = t.none(`DELETE FROM devices WHERE device_id=$1`, [deviceId])
+        const q2 = t.none(`DELETE FROM machine_pings WHERE device_id=$1`, [deviceId])
+        const q3 = t.none(`DELETE FROM machine_network_heartbeat WHERE device_id=$1`, [deviceId])
+        const q4 = t.none(`DELETE FROM machine_network_performance WHERE device_id=$1`, [deviceId])
+        return t.batch([q1, q2, q3, q4])
+    })
+  )
+}
+
+function pair (token, deviceId, machineModel, numOfCassettes = DEFAULT_NUMBER_OF_CASSETTES, numOfRecyclers = DEFAULT_NUMBER_OF_RECYCLERS) {
+  return pullToken(token)
+    .then(r => {
+      if (r.expired) return false
+
+      const insertSql = `insert into devices (device_id, name, number_of_cassettes, number_of_recyclers) values ($1, $2, $3, $4)
+    on conflict (device_id)
+    do update set paired=TRUE, display=TRUE`
+
+      return db.none(insertSql, [deviceId, r.name, numOfCassettes, numOfRecyclers])
+        .then(() => true)
+    })
+    .catch(err => {
+      logger.debug(err)
+      return false
+    })
+}
+
+function authorizeCaDownload (caToken) {
+  return pullToken(caToken)
+    .then(r => {
+      if (r.expired) throw new Error('Expired')
+
+      return readFile(CA_PATH, {encoding: 'utf8'})
+    })
+}
+
+function isPaired (deviceId) {
+  const sql = 'select device_id, name from devices where device_id=$1 and paired=TRUE'
+
+  return db.oneOrNone(sql, [deviceId])
+    .then(row => row && row.device_id === deviceId ? row.name : false)
+}
+
+module.exports = {pair, unpair, authorizeCaDownload, isPaired}