refactor(report): rename ReportableEntity.comment to ReportableEntity.engagement

- Update `ReportableEntity` enum:
  - Rename `comment` to `engagement`
  - Update JSON value to 'engagement'
- Update related tests
- Update fixtures to use `engagement` instead of `comment`
- Update models to include missing fields and adjust serialization

Author: fulleni

lib/src/enums/reportable_entity.dart

@@ -16,7 +16,7 @@ enum ReportableEntity {
   @JsonValue('source')
   source,
 
-  /// The report is for a user-submitted comment.
-  @JsonValue('comment')
-  comment,
+  /// The report is for a user engagement (mainly for engagements with comments).
+  @JsonValue('engagement')
+  engagement,
 }

lib/src/fixtures/reports.dart

@@ -14,6 +14,9 @@ List<Report> getReportsFixturesData({DateTime? now}) {
   final headlines = getHeadlinesFixturesData(
     now: referenceTime,
   ).take(10).toList();
+  final engagementsWithComments = getEngagementsFixturesData(
+    now: referenceTime,
+  ).where((e) => e.comment != null).toList();
   final reportIds = [
     kReportId1,
     kReportId2,
@@ -75,8 +78,8 @@ List<Report> getReportsFixturesData({DateTime? now}) {
         Report(
           id: reportIds[i],
           reporterUserId: user.id,
-          entityType: ReportableEntity.comment,
-          entityId: getHeadlineCommentsFixturesData(now: referenceTime)[i].id,
+          entityType: ReportableEntity.engagement,
+          entityId: engagementsWithComments[i].id,
           reason: commentReasons[i % commentReasons.length].name,
           additionalComments: 'This comment is spam.',
           status: status,

lib/src/models/user_generated_content/comment.g.dart

@@ -9,15 +9,15 @@ void main() {
         containsAll([
           ReportableEntity.headline,
           ReportableEntity.source,
-          ReportableEntity.comment,
+          ReportableEntity.engagement,
         ]),
       );
     });
 
     test('has correct string values', () {
       expect(ReportableEntity.headline.name, 'headline');
       expect(ReportableEntity.source.name, 'source');
-      expect(ReportableEntity.comment.name, 'comment');
+      expect(ReportableEntity.engagement.name, 'engagement');
     });
 
     test('can be created from string values', () {
@@ -27,8 +27,8 @@ void main() {
       );
       expect(ReportableEntity.values.byName('source'), ReportableEntity.source);
       expect(
-        ReportableEntity.values.byName('comment'),
-        ReportableEntity.comment,
+        ReportableEntity.values.byName('engagement'),
+        ReportableEntity.engagement,
       );
     });
   });