[vertex-ai] App Version for AI Monitoring (#14568)

Author: paulb777

FirebaseVertexAI/Sources/GenerativeAIService.swift

@@ -193,10 +193,12 @@ struct GenerativeAIService {
       urlRequest.setValue("Firebase \(authToken)", forHTTPHeaderField: "Authorization")
     }
 
-    // TODO: wait for release approval.
-//    if firebaseInfo.app.isDataCollectionDefaultEnabled {
-//      urlRequest.setValue(firebaseInfo.googleAppID, forHTTPHeaderField: "X-Firebase-AppId")
-//    }
+    if firebaseInfo.app.isDataCollectionDefaultEnabled {
+      urlRequest.setValue(firebaseInfo.googleAppID, forHTTPHeaderField: "X-Firebase-AppId")
+      if let appVersion = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String {
+        urlRequest.setValue(appVersion, forHTTPHeaderField: "X-Firebase-AppVersion")
+      }
+    }
 
     let encoder = JSONEncoder()
     urlRequest.httpBody = try encoder.encode(request)

FirebaseVertexAI/Tests/Unit/GenerativeModelTests.swift

@@ -1530,9 +1530,14 @@ final class GenerativeModelTests: XCTestCase {
       XCTAssert(apiClientTags.contains(GenerativeAIService.languageTag))
       XCTAssert(apiClientTags.contains(GenerativeAIService.firebaseVersionTag))
       XCTAssertEqual(request.value(forHTTPHeaderField: "X-Firebase-AppCheck"), appCheckToken)
-      // TODO: Wait for release approval
-      // let googleAppID = request.value(forHTTPHeaderField: "X-Firebase-AppId")
-      // XCTAssertEqual(googleAppID, dataCollection ? "My app ID" : nil)
+
+      let googleAppID = request.value(forHTTPHeaderField: "X-Firebase-AppId")
+      let appVersion = request.value(forHTTPHeaderField: "X-Firebase-AppVersion")
+      let expectedAppVersion =
+        try? XCTUnwrap(Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String)
+      XCTAssertEqual(googleAppID, dataCollection ? "My app ID" : nil)
+      XCTAssertEqual(appVersion, dataCollection ? expectedAppVersion : nil)
+
       if let authToken {
         XCTAssertEqual(request.value(forHTTPHeaderField: "Authorization"), "Firebase \(authToken)")
       } else {