From e9ad3882d25f758da3fae2f720901baf5e952817 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20Tollk=C3=BChn?= <s.tollkuehn@bnvb-ingenieure.de>
Date: Thu, 22 Oct 2026 15:33:52 +0200
Subject: [PATCH] move const CONFIG to json file and add documentation in
 README.md

---
 README.md          | 15 ++++++++++++
 assets/config.json | 15 ++++++++++++
 assets/launch.js   | 58 ++++++++++++++++++----------------------------
 3 files changed, 52 insertions(+), 36 deletions(-)
 create mode 100644 assets/config.json

diff --git a/README.md b/README.md
index cca4b10..dd862b9 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,21 @@
 
 A small html/js project to nudge a user to use the desktop client for Jitsi.
 
+## Configuration
+
+All settings live in `assets/config.json`, loaded at startup. The launcher stays
+up but links break if the file is missing or malformed.
+
+| Parameter | Description |
+| --- | --- |
+| `jitsiLauncher` | Domain of this Jitsi launcher. Used for the meeting URLs created by the meeting creator (Nextcloud, adhoc link). |
+| `jitsiHost` | Jitsi domain. Used for the browser fallback URL, the desktop protocol URL and the UID of generated ICS files. |
+| `nextcloudBase` | Nextcloud instance used by the "Create in Nextcloud" button (calendar event creation). |
+| `launchTimeout` | Timeout in ms before the browser fallback is shown after trying to start the jitsi-meet-electron client. |
+| `backgroundImage` | Path to the page background image. Empty: no background. |
+| `logo` | Path to the logo shown in the logo bar. Empty: logo bar stays hidden. |
+| `downloads` | Download URLs for the jitsi-meet clients, shown in the fallback view per detected OS: `windows`, `macos`, `linux`, `ios`, `android`. |
+
 ## Third-party assets
 
 - `assets/lib/ua-parser.min.js` — [ua-parser-js](https://github.com/faisalman/ua-parser-js) v2.0.10, © Faisal Salman, licensed under AGPL-3.0.
diff --git a/assets/config.json b/assets/config.json
new file mode 100644
index 0000000..e9b3a3f
--- /dev/null
+++ b/assets/config.json
@@ -0,0 +1,15 @@
+{
+  "jitsiLauncher": "meet.bnvb.eu",
+  "jitsiHost": "meet.bnvb-ingenieure.de",
+  "nextcloudBase": "https://cloud.bnvb-ingenieure.de",
+  "launchTimeout": 2000,
+  "backgroundImage": "assets/images/background.png",
+  "logo": "assets/images/logo.svg",
+  "downloads": {
+    "windows": "https://github.com/jitsi/jitsi-meet-electron/releases/latest/download/jitsi-meet.exe",
+    "macos": "https://github.com/jitsi/jitsi-meet-electron/releases/latest/download/jitsi-meet.dmg",
+    "linux": "https://github.com/jitsi/jitsi-meet-electron/releases",
+    "ios": "https://apps.apple.com/app/jitsi-meet/id1165103905",
+    "android": "https://play.google.com/store/apps/details?id=org.jitsi.meet"
+  }
+}
diff --git a/assets/launch.js b/assets/launch.js
index f573416..16eba86 100644
--- a/assets/launch.js
+++ b/assets/launch.js
@@ -5,42 +5,12 @@
  * ============================================================
  */
 
-const CONFIG = {
-  /* 
-   * Your Jitsi Launcher domain
-   */
-  jitsiLauncher: "meet.bnvb.eu",
-  /*
-   * Your Jitsi domain.
-   */
-  jitsiHost: "meet.bnvb-ingenieure.de",
-  /*
-   * Your Nextcloud instance (calendar event creation).
-   */
-  nextcloudBase: "https://cloud.bnvb-ingenieure.de",
-  /*
-   * Timeout trying to start the jitsi-meet-electron client
-   */
-  launchTimeout: 2000,
-  /*
-   * set wallpaper for webpage
-   */
-  backgroundImage: "assets/images/background.png",
-  /*
-   * Set logo
-   */
-  logo: "assets/images/logo.svg",
-  /*
-   * Download URLs for jitsi-meet clients
-   */
-  downloads: {
-    windows: "https://github.com/jitsi/jitsi-meet-electron/releases/latest/download/jitsi-meet.exe",
-    macos: "https://github.com/jitsi/jitsi-meet-electron/releases/latest/download/jitsi-meet.dmg",
-    linux: "https://github.com/jitsi/jitsi-meet-electron/releases",
-    ios: "https://apps.apple.com/app/jitsi-meet/id1165103905",
-    android: "https://play.google.com/store/apps/details?id=org.jitsi.meet"
-  }
-};
+/*
+ * Konfiguration liegt in assets/config.json und wird beim
+ * Start asynchron geladen (siehe START).
+ */
+let CONFIG = {};
+const CONFIG_URL = "assets/config.json";
 
 /* ============================================================
  * Translations
@@ -1440,6 +1410,19 @@ window
  * ============================================================
  */
 
+async function loadConfig() {
+  try {
+    const response = await fetch(CONFIG_URL);
+    CONFIG = await response.json();
+  } catch (error) {
+    /*
+     * Ohne Datei bleiben Launcher unbrauchbar – Fehler
+     * melden und mit leerer Konfiguration fortfahren.
+     */
+    console.error("Error loading config:", error);
+  }
+}
+
 async function loadTranslations() {
   try {
     const response = await fetch(I18N_URL);
@@ -1461,6 +1444,9 @@ async function loadTranslations() {
  */
 async function start() {
   applyTheme();
+
+  await loadConfig();
+
   applyBackgroundImage();
   applyLogo();