Add support for input-push-token and attributes-type

pushy/src/main/java/com/eatthepath/pushy/apns/util/ApnsPayloadBuilder.java

@@ -82,6 +82,8 @@ public abstract class ApnsPayloadBuilder {
     private boolean preferStringRepresentationForAlerts = false;
 
     private LiveActivityEvent event = null;
+    private String attributesType = null;
+    private Integer inputPushToken = null;
 
     private Instant timestamp = null;
 
@@ -123,6 +125,8 @@ public abstract class ApnsPayloadBuilder {
     private static final String DISMISSAL_DATE_KEY = "dismissal-date";
     private static final String EVENT_KEY = "event";
     private static final String CONTENT_STATE_KEY = "content-state";
+    private static final String INPUT_PUSH_TOKEN_KEY = "input-push-token";
+    private static final String ATTRIBUTES_TYPE_KEY = "attributes-type";
 
     public static final String[] EMPTY_STRING_ARRAY = new String[0];
 
@@ -778,6 +782,32 @@ public ApnsPayloadBuilder setTimestamp(final Instant timestamp) {
         return this;
     }
 
+    /**
+     * <p>Sets the flag to wake up the app and receive a push token to send updates to the started Live Activity.</p>
+     *
+     * @return a reference to this payload builder
+     *
+     * @see <a href="https://developer.apple.com/documentation/activitykit/starting-and-updating-live-activities-with-activitykit-push-notifications">
+     *      Starting and updating Live Activities with ActivityKit push notifications</a>
+     */
+    public ApnsPayloadBuilder setInputPushToken() {
+        this.inputPushToken = 1;
+        return this;
+    }
+
+    /**
+     * <p>Sets the type of the content inside attributes that will be used to start the Live Activity..</p>
+     *
+     * @return a reference to this payload builder
+     *
+     * @see <a href="https://developer.apple.com/documentation/activitykit/starting-and-updating-live-activities-with-activitykit-push-notifications">
+     *      Starting and updating Live Activities with ActivityKit push notifications</a>
+     */
+    public ApnsPayloadBuilder setAttributesType(final String attributesType) {
+        this.attributesType = attributesType;
+        return this;
+    }
+
     /**
      * <p>Sets a timestamp for the push notification payload. The timestamp is used to discard older
      * push notifications. According to Apple's documentation:</p>
@@ -949,6 +979,14 @@ protected Map<String, Object> buildPayloadMap() {
                 aps.put(ALERT_KEY, alert);
             }
 
+            if (this.attributesType != null) {
+                aps.put(ATTRIBUTES_TYPE_KEY, this.attributesType);
+            }
+
+            if (this.inputPushToken != null) {
+                aps.put(INPUT_PUSH_TOKEN_KEY, this.inputPushToken);
+            }
+
             payload.put(APS_KEY, aps);
         }