feat: support enable and disable sdk (#39)

Co-authored-by: xiaoweii <xiaoweii@amazom.com>

Author: zhu-xiaowei

README.md

@@ -207,6 +207,20 @@ import Clickstream
 ClickstreamAnalytics.flushEvents()
 ```
 
+#### Disable SDK
+
+You can disable the SDK in the scenario you need. After disabling the SDK, the SDK will not handle the logging and sending of any events. Of course you can enable the SDK when you need to continue logging events.
+
+```swift
+import Clickstream
+
+// disable SDK
+ClickstreamAnalytics.disable()
+
+// enable SDK
+ClickstreamAnalytics.enable()
+```
+
 ## How to build&test locally
 
 ### Config your code format

Sources/Clickstream/AWSClickstreamPlugin+ClientBehavior.swift

@@ -91,10 +91,16 @@ extension AWSClickstreamPlugin {
     }
 
     func enable() {
+        if isEnabled { return }
+        self.autoFlushEventsTimer?.resume()
+        clickstream.isEnable = true
         isEnabled = true
     }
 
     func disable() {
+        if !isEnabled { return }
         isEnabled = false
+        clickstream.isEnable = false
+        self.autoFlushEventsTimer?.suspend()
     }
 }

Sources/Clickstream/ClickstreamAnalytics.swift

@@ -73,4 +73,17 @@ public enum ClickstreamAnalytics {
         return (plugin as! AWSClickstreamPlugin).getEscapeHatch().configuration
         // swiftlint:enable force_cast
     }
+
+    /// Disable the SDK
+    /// - Parameter userId: current userId, nil for logout
+    public static func disable() {
+        Amplify.Analytics.disable()
+    }
+    
+    
+    /// Enable the SDK
+    /// - Parameter userId: current userId, nil for logout
+    public static func enable() {
+        Amplify.Analytics.enable()
+    }
 }

Sources/Clickstream/ClickstreamObjc.swift

@@ -71,6 +71,16 @@ import Foundation
         try ClickstreamAnalytics.getClickstreamConfiguration()
     }
 
+    /// Disable the SDK
+    public static func disable() {
+        ClickstreamAnalytics.disable()
+    }
+
+    /// Enable the SDK
+    public static func enable() {
+        ClickstreamAnalytics.enable()
+    }
+
     private static func getAttributes(_ attributes: NSDictionary) -> ClickstreamAttribute {
         var result: ClickstreamAttribute = [:]
         for case let (key as String, value) in attributes {

Sources/Clickstream/Dependency/Clickstream/AutoRecord/AutoRecordEventClient.swift

@@ -35,6 +35,7 @@ class AutoRecordEventClient {
     }
 
     func onViewDidAppear(screenName: String, screenPath: String, screenHashValue: String) {
+        if !clickstream.isEnable { return }
         if !isSameScreen(screenName, screenPath, screenHashValue) {
             if lastScreenName != nil {
                 recordUserEngagement()

Sources/Clickstream/Dependency/Clickstream/ClickstreamContext.swift

@@ -89,6 +89,7 @@ class ClickstreamContext {
     var configuration: ClickstreamContextConfiguration
     var userUniqueId: String
     let storage: ClickstreamContextStorage
+    var isEnable: Bool
 
     init(with configuration: ClickstreamContextConfiguration,
          userDefaults: UserDefaultsBehaviour = UserDefaults.standard) throws
@@ -97,5 +98,6 @@ class ClickstreamContext {
         self.userUniqueId = UserDefaultsUtil.getCurrentUserUniqueId(storage: storage)
         self.systemInfo = SystemInfo(storage: storage)
         self.configuration = configuration
+        self.isEnable = true
     }
 }

Sources/Clickstream/Dependency/Clickstream/Session/SessionClient.swift

@@ -73,6 +73,7 @@ class SessionClient: SessionClientBehaviour {
     }
 
     private func respond(to newState: ApplicationState) {
+        if !clickstream.isEnable { return }
         switch newState {
         case .runningInForeground:
             handleAppEnterForeground()

Tests/ClickstreamTests/Clickstream/AutoRecordEventClientTest.swift

@@ -197,4 +197,15 @@ class AutoRecordEventClientTest: XCTestCase {
         window.makeKeyAndVisible()
         XCTAssertNotEqual(Event.PresetEvent.USER_ENGAGEMENT, eventRecorder.savedEvents[1].eventType)
     }
+
+    func testDisableSDKWillNotRecordScreenViewEvents() {
+        clickstream.isEnable = false
+        activityTracker.callback?(.runningInForeground)
+        autoRecordEventClient.setIsEntrances()
+        let viewController = MockViewControllerA()
+        let window = UIWindow(frame: UIScreen.main.bounds)
+        window.rootViewController = viewController
+        window.makeKeyAndVisible()
+        XCTAssertTrue(eventRecorder.saveCount == 0)
+    }
 }

Tests/ClickstreamTests/Clickstream/SessionClientTests.swift

@@ -197,4 +197,12 @@ class SessionClientTests: XCTestCase {
         activityTracker.callback?(.runningInForeground)
         XCTAssertTrue(Date().millisecondsSince1970 - sessionClient.autoRecordClient.lastScreenStartTimestamp < 200)
     }
+
+    func testDisableSDKWillNotRecordSessionEvents() {
+        clickstream.isEnable = false
+        activityTracker.callback?(.runningInForeground)
+        Thread.sleep(forTimeInterval: 0.1)
+        let events = eventRecorder.savedEvents
+        XCTAssertEqual(0, events.count)
+    }
 }

Tests/ClickstreamTests/ClickstreamPluginBehaviorTest.swift

@@ -22,6 +22,7 @@ class ClickstreamPluginBehaviorTest: ClickstreamPluginTestBase {
         try await super.setUp()
         analyticsClient = MockAnalyticsClient()
         analyticsPlugin.analyticsClient = analyticsClient
+        analyticsPlugin.clickstream = clickstream
     }
 
     func testIdentifyUser() {