feat: add enrichment of StartRequest with OS, device ID, version

Coder-Desktop/VPN/Manager.swift

@@ -6,6 +6,7 @@ import VPNLib
 actor Manager {
     let ptp: PacketTunnelProvider
     let cfg: ManagerConfig
+    let telemetryEnricher: TelemetryEnricher
 
     let tunnelHandle: TunnelHandle
     let speaker: Speaker<Vpn_ManagerMessage, Vpn_TunnelMessage>
@@ -19,6 +20,7 @@ actor Manager {
     init(with: PacketTunnelProvider, cfg: ManagerConfig) async throws(ManagerError) {
         ptp = with
         self.cfg = cfg
+        telemetryEnricher = TelemetryEnricher()
         #if arch(arm64)
             let dylibPath = cfg.serverUrl.appending(path: "bin/coder-vpn-darwin-arm64.dylib")
         #elseif arch(x86_64)
@@ -176,6 +178,7 @@ actor Manager {
                                 req.value = header.value
                             }
                         }
+                        req = telemetryEnricher.enrich(req)
                     }
                 })
         } catch {

Coder-Desktop/VPNLib/TelemetryEnricher.swift

@@ -0,0 +1,31 @@
+import Foundation
+
+public struct TelemetryEnricher {
+    private let deviceID: String
+    private let version: String?
+
+    public init() {
+        version = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String
+
+        let userDefaults = UserDefaults.standard
+        let key = "deviceID"
+
+        if let existingID = userDefaults.string(forKey: key) {
+            deviceID = existingID
+        } else {
+            let newID = UUID().uuidString
+            userDefaults.set(newID, forKey: key)
+            deviceID = newID
+        }
+    }
+
+    public func enrich(_ original: Vpn_StartRequest) -> Vpn_StartRequest {
+        var req = original
+        req.deviceOs = "macOS"
+        req.deviceID = deviceID
+        if version != nil {
+            req.coderDesktopVersion = version!
+        }
+        return req
+    }
+}