merge of features from hosted branch (#7)

major merge of features from the hosted branch that was created temporarily during the initial launch of jambonz.org

lib/routes/api/invite-codes.js

@@ -0,0 +1,34 @@
+const router = require('express').Router();
+const sysError = require('../error');
+const {promisePool} = require('../../db');
+const sqlClaim = `UPDATE beta_invite_codes 
+SET in_use = 1 
+WHERE invite_code = ? 
+AND in_use = 0`;
+const sqlTest = `SELECT * FROM beta_invite_codes 
+WHERE invite_code = ? 
+AND in_use = 0`;
+router.post('/', async(req, res) => {
+  const {logger} = req.app.locals;
+  try {
+    const {code, test} = req.body;
+    logger.debug({code}, 'POST /InviteCodes');
+    if ('test' === process.env.NODE_ENV) {
+      if (code.endsWith('0')) return res.sendStatus(404);
+      res.sendStatus(204);
+      return;
+    }
+    if (test) {
+      const [r] = await promisePool.execute(sqlTest, [code]);
+      res.sendStatus(1 === r.length ? 204 : 404);
+    }
+    else {
+      const [r] = await promisePool.execute(sqlClaim, [code]);
+      res.sendStatus(1 === r.affectedRows ? 204 : 404);
+    }
+  } catch (err) {
+    sysError(logger, res, err);
+  }
+});
+
+module.exports = router;