// ignore_for_file: sort_constructors_first

import 'package:flutter/foundation.dart';

/// Reminder cadence supported by the local scheduling layer.
enum ReminderCadence { daily, weekly, monthly }

/// Reminder rule stored locally and optionally synced later.
@immutable
class ReminderRule {
  const ReminderRule({
    required this.id,
    required this.title,
    required this.cadence,
    required this.nextAt,
    this.personId,
    this.enabled = true,
  });

  final String id;
  final String? personId;
  final String title;
  final ReminderCadence cadence;
  final DateTime nextAt;
  final bool enabled;

  ReminderRule copyWith({
    String? id,
    String? personId,
    String? title,
    ReminderCadence? cadence,
    DateTime? nextAt,
    bool? enabled,
  }) {
    return ReminderRule(
      id: id ?? this.id,
      personId: personId ?? this.personId,
      title: title ?? this.title,
      cadence: cadence ?? this.cadence,
      nextAt: nextAt ?? this.nextAt,
      enabled: enabled ?? this.enabled,
    );
  }

  Map<String, dynamic> toJson() {
    return <String, dynamic>{
      'id': id,
      'personId': personId,
      'title': title,
      'cadence': cadence.name,
      'nextAt': nextAt.toUtc().toIso8601String(),
      'enabled': enabled,
    };
  }

  factory ReminderRule.fromJson(Map<String, dynamic> json) {
    final String cadenceName =
        json['cadence'] as String? ?? ReminderCadence.weekly.name;
    return ReminderRule(
      id: json['id'] as String,
      personId: json['personId'] as String?,
      title: json['title'] as String,
      cadence: ReminderCadence.values.firstWhere(
        (ReminderCadence cadence) => cadence.name == cadenceName,
        orElse: () => ReminderCadence.weekly,
      ),
      nextAt: DateTime.parse(json['nextAt'] as String).toLocal(),
      enabled: json['enabled'] as bool? ?? true,
    );
  }
}