feat: add/use RFC3339 fields in requests

Timestamp fields that store time as milliseconds since epoch are
being replaced by fields that store it as a RFC 3339 string.

This commit:
- Removes POST /feedbacks `timestamp` field, replacing it with
`occurred_at`. Removal is possible because this field is not in
the public API.
- Add `collected_at` to POST /signups' `additional_locations`. This
field should be used instead of the existing `timestamp`.

build.gradle

@@ -43,6 +43,7 @@ dependencies {
     implementation platform("com.squareup.okhttp3:okhttp-bom:4.12.0")
     implementation "com.squareup.okhttp3:okhttp"
     implementation "com.fasterxml.jackson.core:jackson-databind:2.17.1"
+    implementation "com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.17.1"
 
     testImplementation 'com.auth0:java-jwt:4.4.0'
     testImplementation 'commons-io:commons-io:2.16.1'

src/main/java/com/incognia/api/IncogniaAPI.java

@@ -408,14 +408,14 @@ public void registerFeedback(
 
   public void registerFeedback(
       FeedbackEvent feedbackEvent,
-      Instant timestamp,
+      Instant occurredAt,
       FeedbackIdentifiers identifiers,
       boolean dryRun)
       throws IncogniaException {
     PostFeedbackRequestBody requestBody =
         PostFeedbackRequestBody.builder()
             .event(feedbackEvent)
-            .timestamp(timestamp.toEpochMilli())
+            .occurredAt(occurredAt)
             .installationId(identifiers.getInstallationId())
             .sessionToken(identifiers.getSessionToken())
             .accountId(identifiers.getAccountId())

src/main/java/com/incognia/api/clients/ObjectMapperFactory.java

@@ -4,13 +4,15 @@
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.PropertyNamingStrategy;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
 
 public class ObjectMapperFactory {
   @SuppressWarnings("deprecation")
   // PropertyNamingStrategy.SNAKE_CASE is deprecated but we use it for compatibility with older
   // jackson versions
   public static final ObjectMapper OBJECT_MAPPER =
       new ObjectMapper()
+          .registerModule(new JavaTimeModule())
           .setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE)
           .setSerializationInclusion(Include.NON_NULL)
           .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

src/main/java/com/incognia/common/AdditionalLocation.java

@@ -1,5 +1,6 @@
 package com.incognia.common;
 
+import java.time.Instant;
 import lombok.Builder;
 import lombok.Value;
 
@@ -8,5 +9,6 @@
 public class AdditionalLocation {
   Double lat;
   Double lng;
-  Long timestamp;
+  @Deprecated Long timestamp;
+  Instant collectedAt;
 }

src/main/java/com/incognia/feedback/PostFeedbackRequestBody.java

@@ -1,13 +1,14 @@
 package com.incognia.feedback;
 
+import java.time.Instant;
 import lombok.Builder;
 import lombok.Value;
 
 @Value
 @Builder
 public class PostFeedbackRequestBody {
   FeedbackEvent event;
-  Long timestamp;
+  Instant occurredAt;
   String accountId;
   String externalId;
   String installationId;

src/test/java/com/incognia/api/IncogniaAPITest.java

@@ -556,7 +556,7 @@ void testRegisterFeedback_whenDataIsValid(boolean dryRun) {
             .signupId(signupId)
             .accountId(accountId)
             .event(FeedbackEvent.ACCOUNT_TAKEOVER)
-            .timestamp(timestamp.toEpochMilli())
+            .occurredAt(timestamp)
             .build());
     mockServer.setDispatcher(dispatcher);
     client.registerFeedback(