fix: find active exit node from Peer map instead of CurrentExitNode

tailscalectl/TailscaleWidget.qml

@@ -86,7 +86,7 @@ PluginComponent {
                     const data = JSON.parse(this.text)
                     root.isConnected = data.BackendState === "Running"
                     root.tailscaleIP = (data.Self?.TailscaleIPs?.[0]) || ""
-                    root.currentExitNode = data.CurrentExitNode?.HostName || ""
+                    root.currentExitNode = TailscaleLib.findActiveExitNode(data.Peer || {})
                     root.peers = TailscaleLib.parsePeers(data.Peer || {})
                 } catch (e) {
                     root.isConnected = false

tailscalectl/lib.js

@@ -15,6 +15,17 @@ function makeExitNodeCommand(hostname) {
     return ["tailscale", "set", "--exit-node=" + hostname]
 }
 
+function findActiveExitNode(peerMap) {
+    if (!peerMap) return ""
+    for (const key in peerMap) {
+        const p = peerMap[key]
+        if (p.ExitNode) {
+            return p.HostName || key
+        }
+    }
+    return ""
+}
+
 function errorMessage(cmd) {
     var messages = {
         "up": "Failed to connect to Tailscale",
@@ -29,5 +40,5 @@ function errorMessage(cmd) {
 
 // CommonJS export for Node.js tests (ignored by QML)
 if (typeof module !== "undefined" && module.exports) {
-    module.exports = { parsePeers, makeExitNodeCommand, errorMessage }
+    module.exports = { parsePeers, makeExitNodeCommand, findActiveExitNode, errorMessage }
 }

test/lib.test.js

@@ -1,7 +1,7 @@
 import { test } from "node:test"
 import assert from "node:assert"
 import lib from "../tailscalectl/lib.js"
-const { parsePeers, makeExitNodeCommand, errorMessage } = lib
+const { parsePeers, makeExitNodeCommand, findActiveExitNode, errorMessage } = lib
 
 test("parsePeers extracts exitNode from ExitNodeOption", () => {
     const peerMap = {
@@ -35,6 +35,21 @@ test("makeExitNodeCommand with empty string clears exit node", () => {
     assert.deepStrictEqual(cmd, ["tailscale", "set", "--exit-node="])
 })
 
+test("findActiveExitNode returns hostname of peer with ExitNode=true", () => {
+    const peerMap = {
+        "peer-1": { HostName: "gluetun-sjc", ExitNode: true, ExitNodeOption: true },
+        "peer-2": { HostName: "gluetun-den", ExitNode: false, ExitNodeOption: true }
+    }
+    assert.strictEqual(findActiveExitNode(peerMap), "gluetun-sjc")
+})
+
+test("findActiveExitNode returns empty string when no exit node", () => {
+    const peerMap = {
+        "peer-1": { HostName: "laptop", ExitNode: false, ExitNodeOption: false }
+    }
+    assert.strictEqual(findActiveExitNode(peerMap), "")
+})
+
 test("errorMessage returns user-friendly message for tailscale up failure", () => {
     const msg = errorMessage("up", 1)
     assert.strictEqual(msg, "Failed to connect to Tailscale")