main.dart

import 'package:firebase_functions/firebase_functions.dart';

void main(List<String> args) async {
  await fireUp(args, (firebase) {
    // Test Firestore onDocumentCreated with wildcard
    firebase.firestore.onDocumentCreated(document: 'users/{userId}', (
      event,
    ) async {
      print('=== USER HANDLER CALLED ===');
      print('User created: ${event.document}');
      print('Params: ${event.params}');
      print('Event ID: ${event.id}');
      print('Event time: ${event.time}');

      // Access document data (similar to Node.js)
      if (event.data != null) {
        final data = event.data!.data();
        print('Document data: $data');

        // Access specific fields
        if (data.containsKey('name')) {
          print('User name: ${data['name']}');
        }
        if (data.containsKey('email')) {
          print('User email: ${data['email']}');
        }
      }
    });

    // Test Firestore onDocumentCreated with literal path
    firebase.firestore.onDocumentCreated(document: 'config/settings', (
      event,
    ) async {
      print('Settings document created');
    });

    // Test with nested collection path
    firebase.firestore.onDocumentCreated(
      document: 'posts/{postId}/comments/{commentId}',
      (event) async {
        print('Comment created in post: ${event.params}');
      },
    );

    // Test onDocumentUpdated
    firebase.firestore.onDocumentUpdated(document: 'users/{userId}', (
      event,
    ) async {
      print('=== USER UPDATED HANDLER CALLED ===');
      print('User updated: ${event.document}');
      print('Params: ${event.params}');

      // Access before and after states
      if (event.data != null) {
        final before = event.data!.before;
        final after = event.data!.after;

        if (before != null && after != null) {
          print('Before: ${before.data()}');
          print('After: ${after.data()}');

          // Check what changed
          final beforeData = before.data();
          final afterData = after.data();

          if (beforeData['name'] != afterData['name']) {
            print(
              'Name changed: ${beforeData['name']} -> ${afterData['name']}',
            );
          }
        }
      }
    });

    // Test onDocumentDeleted
    firebase.firestore.onDocumentDeleted(document: 'users/{userId}', (
      event,
    ) async {
      print('=== USER DELETED HANDLER CALLED ===');
      print('User deleted: ${event.document}');
      print('User ID: ${event.params['userId']}');

      // Access the final state before deletion
      if (event.data != null) {
        final deletedData = event.data!.data();
        print('Deleted user data: $deletedData');
      }
    });

    // Test onDocumentWritten (catches all operations)
    firebase.firestore.onDocumentWritten(document: 'users/{userId}', (
      event,
    ) async {
      print('=== USER WRITTEN HANDLER CALLED ===');
      print('User written: ${event.document}');

      if (event.data != null) {
        final before = event.data!.before;
        final after = event.data!.after;

        // Determine operation type
        if (before == null && after != null) {
          print('Operation: CREATE');
          print('New user data: ${after.data()}');
        } else if (before != null && after == null) {
          print('Operation: DELETE');
          print('Deleted user data: ${before.data()}');
        } else if (before != null && after != null) {
          print('Operation: UPDATE');
          print('Before: ${before.data()}');
          print('After: ${after.data()}');
        }
      }
    });
  });
}