Setting up Flutter ODM with Firestore and Freezed

flutter pub add cloud_firestore_odm freezed json_annotation cloud_firestore_odm freezed_annotation build_runner json_serializable

// ignore_for_file: invalid_annotation_target, avoid-dynamic

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:cloud_firestore_odm/cloud_firestore_odm.dart';
import 'package:freezed_annotation/freezed_annotation.dart';

part 'notification.freezed.dart';
part 'notification.g.dart';

@Collection<Notification>('notifications')
@freezed
class Notification with _$Notification {
  @JsonSerializable()
  factory Notification(
      {required NotificationBody notification,
      NotificationData? data,
      required List<String> recipientIds}) = _Notification;

  factory Notification.fromJson(Map<String, Object?> json) =>
      _$NotificationFromJson(json);
}

@freezed
class NotificationBody with _$NotificationBody {
  @JsonSerializable()
  factory NotificationBody({required String? title, required String? body}) =
      _NotificationBody;

  factory NotificationBody.fromJson(Map<String, Object?> json) =>
      _$NotificationBodyFromJson(json);
}

@freezed
class NotificationData with _$NotificationData {
  @JsonSerializable()
  factory NotificationData({required String? path, required String? extra}) =
      _NotificationData;

  factory NotificationData.fromJson(Map<String, Object?> json) =>
      _$NotificationDataFromJson(json);
}

final notificationsRef = NotificationCollectionReference();

class NotificationRepository {
  NotificationRepository(this._notificationsRef);

  final NotificationCollectionReference _notificationsRef;

  void createTestPushNotification() async {
    if (FirebaseAuth.instance.currentUser?.uid != null) {
      await _notificationsRef.doc().set(Notification(
              notification: NotificationBody(
                  title: 'Test - ${randomNumeric(3)}', body: randomString(15)),
              recipientIds: [
                FirebaseAuth.instance.currentUser!.uid
              ]));
    }
  }
}