relatica/lib/riverpod_controllers/log_service.dart

import 'dart:collection';

import 'package:flutter/foundation.dart';
import 'package:logging/logging.dart';
import 'package:riverpod_annotation/riverpod_annotation.dart';

part 'log_service.g.dart';

const _defaultMaxItems = 1000;

@Riverpod(keepAlive: true)
class LogService extends _$LogService {
  final _maxItems = _defaultMaxItems;
  final _events = Queue<LogRecord>();

  @override
  UnmodifiableListView<LogRecord> build() {
    Logger.root.onRecord.listen((event) {
      add(event);
    });
    return UnmodifiableListView(_events);
  }

  void add(LogRecord event) {
    final logName = event.loggerName.isEmpty ? 'ROOT' : event.loggerName;
    final msg =
        '${event.level.name} - $logName @ ${event.time}: ${event.message}';
    debugPrint(msg);
    _events.add(event);
    if (_events.length > _maxItems) {
      _events.removeFirst();
    }
    ref.invalidateSelf();
  }
}