[SDK-149] add-logout-functionality

src/core/classes/Iterable.test.ts

@@ -74,6 +74,58 @@ describe('Iterable', () => {
     });
   });
 
+  describe('logout', () => {
+    it('should call setEmail with null', () => {
+      // GIVEN no parameters
+      // WHEN Iterable.logout is called
+      const setEmailSpy = jest.spyOn(Iterable, 'setEmail');
+      Iterable.logout();
+      // THEN Iterable.setEmail is called with null
+      expect(setEmailSpy).toBeCalledWith(null);
+      setEmailSpy.mockRestore();
+    });
+
+    it('should call setUserId with null', () => {
+      // GIVEN no parameters
+      // WHEN Iterable.logout is called
+      const setUserIdSpy = jest.spyOn(Iterable, 'setUserId');
+      Iterable.logout();
+      // THEN Iterable.setUserId is called with null
+      expect(setUserIdSpy).toBeCalledWith(null);
+      setUserIdSpy.mockRestore();
+    });
+
+    it('should clear email and userId', async () => {
+      // GIVEN a user is logged in
+
+      // This is just for testing purposed.
+      // Usually you'd either call `setEmail` or `setUserId`, but not both.
+      Iterable.setEmail('[email protected]');
+      Iterable.setUserId('user123');
+      // WHEN Iterable.logout is called
+      Iterable.logout();
+      // THEN email and userId are set to null
+      const email = await Iterable.getEmail();
+      const userId = await Iterable.getUserId();
+      expect(email).toBeNull();
+      expect(userId).toBeNull();
+    });
+
+    it('should call setEmail and setUserId with null', () => {
+      // GIVEN no parameters
+      const setEmailSpy = jest.spyOn(Iterable, 'setEmail');
+      const setUserIdSpy = jest.spyOn(Iterable, 'setUserId');
+      // WHEN Iterable.logout is called
+      Iterable.logout();
+      // THEN both methods are called with null
+      expect(setEmailSpy).toBeCalledWith(null);
+      expect(setUserIdSpy).toBeCalledWith(null);
+      // Clean up
+      setEmailSpy.mockRestore();
+      setUserIdSpy.mockRestore();
+    });
+  });
+
   describe('disableDeviceForCurrentUser', () => {
     it('should disable the device for the current user', () => {
       // GIVEN no parameters

src/core/classes/Iterable.ts

@@ -890,6 +890,34 @@ export class Iterable {
     });
   }
 
+  /**
+   * Logs out the current user from the Iterable SDK.
+   *
+   * This method will remove all event listeners for the Iterable SDK and set the email and user ID to null.
+   *
+   * @example
+   * ```typescript
+   * Iterable.logout();
+   * ```
+   */
+  static logout() {
+    Iterable.removeAllEventListeners();
+    Iterable.setEmail(null);
+    Iterable.setUserId(null);
+  }
+
+  /**
+   * Removes all event listeners for the Iterable SDK.
+   */
+  private static removeAllEventListeners() {
+    RNEventEmitter.removeAllListeners(IterableEventName.handleUrlCalled);
+    RNEventEmitter.removeAllListeners(IterableEventName.handleInAppCalled);
+    RNEventEmitter.removeAllListeners(IterableEventName.handleCustomActionCalled);
+    RNEventEmitter.removeAllListeners(IterableEventName.handleAuthCalled);
+    RNEventEmitter.removeAllListeners(IterableEventName.handleAuthSuccessCalled);
+    RNEventEmitter.removeAllListeners(IterableEventName.handleAuthFailureCalled);
+  }
+
   /**
    * Sets up event handlers for various Iterable events.
    *
@@ -912,12 +940,7 @@ export class Iterable {
    */
   private static setupEventHandlers() {
     // Remove all listeners to avoid duplicate listeners
-    RNEventEmitter.removeAllListeners(IterableEventName.handleUrlCalled);
-    RNEventEmitter.removeAllListeners(IterableEventName.handleInAppCalled);
-    RNEventEmitter.removeAllListeners(
-      IterableEventName.handleCustomActionCalled
-    );
-    RNEventEmitter.removeAllListeners(IterableEventName.handleAuthCalled);
+    Iterable.removeAllEventListeners();
 
     if (Iterable.savedConfig.urlHandler) {
       RNEventEmitter.addListener(IterableEventName.handleUrlCalled, (dict) => {