Add ability to deep clone a hit #52

Author: brsanthu

src/main/java/com/brsanthu/googleanalytics/request/GoogleAnalyticsRequest.java

@@ -1891,4 +1891,29 @@ public T occurredAt(ZonedDateTime value) {
     public ZonedDateTime occurredAt() {
         return occurredAt;
     }
+
+    /**
+     * Deep clones this hit and returns new request of same type. Any changes made to this request after this call, will
+     * not be reflected in the returned instance.
+     */
+    public T deepClone() {
+        try {
+            GoogleAnalyticsRequest<T> clonedReq = this.getClass().newInstance();
+            clonedReq.occurredAt = ZonedDateTime.now();
+            clonedReq.parms = cloneMap(parms);
+            clonedReq.customDimensions = cloneMap(customDimensions);
+            clonedReq.customMetrics = cloneMap(customMetrics);
+            clonedReq.delegateExecutor = delegateExecutor;
+
+            return (T) clonedReq;
+        } catch (Exception e) {
+            throw new RuntimeException("Exception while deep cloning " + this, e);
+        }
+    }
+
+    private <K, V> Map<K, V> cloneMap(Map<K, V> input) {
+        Map<K, V> output = new HashMap<>();
+        output.putAll(input);
+        return output;
+    }
 }

src/test/java/com/brsanthu/googleanalytics/GoogleAnalyticsTest.java

@@ -21,6 +21,7 @@
 import com.brsanthu.googleanalytics.request.DefaultRequest;
 import com.brsanthu.googleanalytics.request.GoogleAnalyticsParameter;
 import com.brsanthu.googleanalytics.request.GoogleAnalyticsResponse;
+import com.brsanthu.googleanalytics.request.ScreenViewHit;
 
 public class GoogleAnalyticsTest {
 
@@ -213,4 +214,15 @@ void testAutoQueueTimeBatch() throws Exception {
         assertThat(Integer.parseInt(resp2.getRequestParams().get(QUEUE_TIME.getParameterName()))).isCloseTo(0, within(100));
     }
 
+    @Test
+    void testDeepClone() throws Exception {
+        ScreenViewHit screenhit1 = ga.screenView().adwordsId("test1");
+        ScreenViewHit screenhit2 = screenhit1.deepClone();
+
+        screenhit1.adwordsId("test1updated");
+
+        assertThat(screenhit1).isNotSameAs(screenhit2);
+        assertThat(screenhit1.adwordsId()).isEqualTo("test1updated");
+        assertThat(screenhit2.adwordsId()).isEqualTo("test1");
+    }
 }