From 3d0f505961469a42738c31b904fa1143b0dff85a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Henrik=20H=C3=BCttemann?= <henrik.huettemann@verdigado.com>
Date: Thu, 25 May 2023 17:35:21 +0200
Subject: [PATCH] Add dotenv and config instructions

---
 .env.example      |  1 +
 README.md         |  4 ++++
 package-lock.json | 14 ++++++++++++++
 package.json      |  1 +
 src/app.ts        |  8 +++++---
 src/users.ts      |  8 ++++++--
 6 files changed, 31 insertions(+), 5 deletions(-)
 create mode 100644 .env.example

diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..a1dbd28
--- /dev/null
+++ b/.env.example
@@ -0,0 +1 @@
+REGISTRATION_SHARED_SECRET='look in your synapses homeserver.yaml'
diff --git a/README.md b/README.md
index 6bd7b03..8a943ed 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,10 @@ curl --request POST \
 > src/config/synapse_access_token.json
 ```
 
+## Configuration
+
+Copy over `.env.example` to `.env` and insert your values.
+
 ## Design Decisions
 
 - Getting data from Rocket.Chat via (currently) manual mongodb export
diff --git a/package-lock.json b/package-lock.json
index 22ac7bb..bc004f4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,6 +10,7 @@
       "license": "AGPL-3.0-or-later",
       "dependencies": {
         "axios": "^1.4.0",
+        "dotenv": "^16.0.3",
         "winston": "^3.8.2"
       },
       "devDependencies": {
@@ -921,6 +922,14 @@
         "node": ">=6.0.0"
       }
     },
+    "node_modules/dotenv": {
+      "version": "16.0.3",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.0.3.tgz",
+      "integrity": "sha512-7GO6HghkA5fYG9TYnNxi14/7K9f5occMlp3zXAuSxn7CKCxt9xbNWG7yF8hTCSUchlfWSe3uLmlPfigevRItzQ==",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/eastasianwidth": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/eastasianwidth/-/eastasianwidth-0.2.0.tgz",
@@ -4513,6 +4522,11 @@
         "esutils": "^2.0.2"
       }
     },
+    "dotenv": {
+      "version": "16.0.3",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.0.3.tgz",
+      "integrity": "sha512-7GO6HghkA5fYG9TYnNxi14/7K9f5occMlp3zXAuSxn7CKCxt9xbNWG7yF8hTCSUchlfWSe3uLmlPfigevRItzQ=="
+    },
     "eastasianwidth": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/eastasianwidth/-/eastasianwidth-0.2.0.tgz",
diff --git a/package.json b/package.json
index 1105132..4d94d94 100644
--- a/package.json
+++ b/package.json
@@ -45,6 +45,7 @@
   },
   "dependencies": {
     "axios": "^1.4.0",
+    "dotenv": "^16.0.3",
     "winston": "^3.8.2"
   }
 }
diff --git a/src/app.ts b/src/app.ts
index 4e15ac7..2a22567 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -1,9 +1,11 @@
+import dotenv from 'dotenv'
+dotenv.config()
 import fs from 'node:fs'
-import readline from 'node:readline'
 import log from './logger'
-import { whoami } from './synapse'
-import { storage } from './storage'
+import readline from 'node:readline'
 import { RcUser, createUser } from './users'
+import { storage } from './storage'
+import { whoami } from './synapse'
 
 log.info('rocketchat2matrix starts.')
 
diff --git a/src/users.ts b/src/users.ts
index aac8145..025ad9e 100644
--- a/src/users.ts
+++ b/src/users.ts
@@ -30,8 +30,12 @@ export function mapUser(rcUser: RcUser): MatrixUser {
   }
 }
 
-const registration_shared_secret =
-  'vkq7zfBDt4A1NmMN6jJ*g+,G~.R:QuC_xI:~7~jQ_6kJ6O~JrG'
+const registration_shared_secret = process.env.REGISTRATION_SHARED_SECRET || ''
+if (!registration_shared_secret) {
+  const message = 'No REGISTRATION_SHARED_SECRET found in .env.'
+  log.error(message)
+  throw new Error(message)
+}
 
 function generateHmac(user: MatrixUser): string {
   const hmac = createHmac('sha1', registration_shared_secret)