From c21398ad32969f2921390c4a02731421330e8c4a Mon Sep 17 00:00:00 2001
From: Rudi van Hierden <rudi@draad.nl>
Date: Tue, 23 Aug 2022 14:56:23 +0200
Subject: [PATCH 1/2] Allow MongoDB credentials to be set

This commit together with https://github.com/openstad/openstad-frontend/pull/354 allows MongoDB to have authentication.

This commit introduces 3 new environment variables:
- MONGO_DB_USER
- MONGO_DB_PASSWORD
- MONGO_DB_AUTHSOURCE

If both `MONGO_DB_USER` and `MONGO_DB_PASSWORD` are set, they are added to the MongoDB connection string.
The `MONGO_DB_AUTHSOURCE` allows us to specify which database we are authenticating against. (see https://www.mongodb.com/docs/manual/reference/connection-string/#std-label-connections-connection-options)
---
 app-init.js | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/app-init.js b/app-init.js
index be5627af..533132af 100644
--- a/app-init.js
+++ b/app-init.js
@@ -39,12 +39,19 @@ const sessionStore = new MySQLStore({
 */
 
 
-const mongoCredentials = {
-  host: process.env.MONGO_DB_HOST || 'localhost',
-  port: process.env.MONGO_DB_PORT || 27017,
+function getMongoDbConnectionString () {
+  const host = process.env.MONGO_DB_HOST || 'localhost';
+  const port = process.env.MONGO_DB_PORT || 27017;
+  const user = process.env.MONGO_DB_USER || '';
+  const password = process.env.MONGO_DB_PASSWORD || '';
+  const authSource = process.env.MONGO_DB_AUTHSOURCE || '';
+  
+  const useAuth = user && password;
+  
+  return `mongodb://${useAuth ? `${user}:${password}@` : ''}${host}:${port}/sessions${authSource ? `?authSource=${authSource}` : ''}`;
 }
 
-const url = 'mongodb://'+ mongoCredentials.host +':'+mongoCredentials.port+'/sessions';
+const url = getMongoDbConnectionString();
 
 const sessionStore =  new MongoStore({
     url: url,

From 12b32dbf3417225348b58c0cd519555f06039478 Mon Sep 17 00:00:00 2001
From: Rudi van Hierden <rudi@draad.nl>
Date: Wed, 24 Aug 2022 10:12:16 +0200
Subject: [PATCH 2/2] Add `MONGO_DB_CONNECTION_STRING` to override the
 connection string builder

This avoids the need of having to specify the following environment variables:
`MONGO_DB_HOST`, `MONGO_DB_PORT`, `MONGO_DB_USER`, `MONGO_DB_PASSWORD` and `MONGO_DB_AUTHSOURCE` and allows greater control of the connection string.
---
 app-init.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/app-init.js b/app-init.js
index 533132af..319fa0c3 100644
--- a/app-init.js
+++ b/app-init.js
@@ -40,6 +40,11 @@ const sessionStore = new MySQLStore({
 
 
 function getMongoDbConnectionString () {
+  // Allow the connection string builder to be overridden by an environment variable
+  if (process.env.MONGO_DB_CONNECTION_STRING) {
+    return process.env.MONGO_DB_CONNECTION_STRING;
+  }
+  
   const host = process.env.MONGO_DB_HOST || 'localhost';
   const port = process.env.MONGO_DB_PORT || 27017;
   const user = process.env.MONGO_DB_USER || '';