From da495e6772b74350402f05a5129547b93a415e63 Mon Sep 17 00:00:00 2001
From: nellydocs <ambor188@googlemail.com>
Date: Fri, 10 Apr 2026 13:44:57 +0200
Subject: [PATCH] feat: add --reload-project CLI flag for external project
 reload

Adds a new --reload-project command-line flag that triggers a project
reload in an already running EEZ Studio instance via the existing
single-instance lock mechanism.
This allows external tools to reload the current project without
manual interaction through the File menu.
---
 packages/main/home-window.ts | 9 +++++++++
 packages/main/main.ts        | 9 +++++++++
 2 files changed, 18 insertions(+)

diff --git a/packages/main/home-window.ts b/packages/main/home-window.ts
index f04a29471..72c554574 100644
--- a/packages/main/home-window.ts
+++ b/packages/main/home-window.ts
@@ -20,6 +20,15 @@ export function bringHomeWindowToFocus() {
     }
 }
 
+export function reloadProject() {
+    let homeWindow = findWindowByParams(HOME_WINDOW_PARAMS);
+    console.log("[reload-project] homeWindow found:", !!homeWindow);
+    if (homeWindow) {
+        console.log("[reload-project] sending IPC reload-project to renderer");
+        homeWindow.browserWindow.webContents.send("reload-project");
+    }
+}
+
 export function importInstrumentDefinitionFile(filePath: string) {
     let homeWindow = findWindowByParams(HOME_WINDOW_PARAMS);
     if (homeWindow) {
diff --git a/packages/main/main.ts b/packages/main/main.ts
index 9ce9f6d1b..e88b579cc 100644
--- a/packages/main/main.ts
+++ b/packages/main/main.ts
@@ -53,6 +53,15 @@ app.on("ready", async function () {
     }
 
     app.on("second-instance", function (event, commandLine, workingDirectory) {
+        if (commandLine.includes("--reload-project")) {
+            console.log("[reload-project] second-instance triggered, commandLine:", commandLine);
+            const { reloadProject } =
+                require("main/home-window") as typeof HomeWindowModule;
+            console.log("[reload-project] calling reloadProject()");
+            reloadProject();
+            return;
+        }
+        console.log("[second-instance] commandLine:", commandLine);
         const { bringHomeWindowToFocus } =
             require("main/home-window") as typeof HomeWindowModule;
         bringHomeWindowToFocus();