Feat: refactor routes.js express entrypoint config

Feat: express config script refactor

Feat: add state and settingsCache files

lib/routes/txRoutes.js

@@ -0,0 +1,70 @@
+const express = require('express')
+const router = express.Router()
+const _ = require('lodash/fp')
+
+const dbErrorCodes = require('../db-error-codes')
+const helpers = require('../route-helpers')
+const logger = require('../logger')
+const plugins = require('../plugins')
+const Tx = require('../tx')
+
+function httpError (msg, code) {
+  const err = new Error(msg)
+  err.name = 'HTTPError'
+  err.code = code || 500
+
+  return err
+}
+
+function postTx (req, res, next) {
+  const pi = plugins(req.settings, req.deviceId)
+
+  return Tx.post(_.set('deviceId', req.deviceId, req.body), pi)
+    .then(tx => {
+      if (tx.errorCode) {
+        logger.error(tx.error)
+        throw httpError(tx.error, 500)
+      }
+
+      return res.json(tx)
+    })
+    .catch(err => {
+      // 204 so that l-m can ignore the error
+      // this is fine because the request is polled and will be retried if needed.
+      if (err.code === dbErrorCodes.SERIALIZATION_FAILURE) {
+        logger.warn('Harmless DB conflict, the query will be retried.')
+        return res.status(204).json({})
+      }
+      if (err instanceof E.StaleTxError) return res.status(409).json({ errorType: 'stale' })
+      if (err instanceof E.RatchetError) return res.status(409).json({ errorType: 'ratchet' })
+
+      throw err
+    })
+    .catch(next)
+}
+
+function getTx (req, res, next) {
+  if (req.query.status) {
+    return helpers.fetchStatusTx(req.params.id, req.query.status)
+      .then(r => res.json(r))
+      .catch(next)
+  }
+
+  return next(httpError('Not Found', 404))
+}
+
+function getPhoneTx (req, res, next) {
+  if (req.query.phone) {
+    return helpers.fetchPhoneTx(req.query.phone)
+      .then(r => res.json(r))
+      .catch(next)
+  }
+
+  return next(httpError('Not Found', 404))
+}
+
+router.post('/', postTx)
+router.get('/:id', getTx)
+router.get('/', getPhoneTx)
+
+module.exports = router