hazard_update.dart

import 'dart:collection';

import 'package:collection/collection.dart';
import 'package:drift/drift.dart' as drift;
import 'package:flutter/foundation.dart';
import 'package:forest_park_reports/consts.dart';
import 'package:forest_park_reports/database/database.dart';
import 'package:freezed_annotation/freezed_annotation.dart';

part 'hazard_update.g.dart';
part 'hazard_update.freezed.dart';

class HazardUpdateList extends ListBase<HazardUpdateModel> {
  final List<HazardUpdateModel> l;

  HazardUpdateList(this.l);

  @override
  set length(int newLength) { l.length = newLength; }
  @override
  int get length => l.length;
  @override
  HazardUpdateModel operator [](int index) => l[index];
  @override
  void operator []=(int index, HazardUpdateModel value) { l[index] = value; }

  String? get lastImage => lastWhereOrNull((e) => e.image != null)?.image;
  String? get lastBlurHash => lastWhereOrNull((e) => e.blurHash != null)?.blurHash;

  factory HazardUpdateList.fromJson(dynamic json) => HazardUpdateList([
    for (final update in json)
      HazardUpdateModel.fromJson(update),
  ]);

  List<Map<String, dynamic>> toJson() => [
    for (final update in this)
      update.toJson(),
  ];
}

@freezed
class HazardUpdateModel with _$HazardUpdateModel implements drift.Insertable<HazardUpdateModel> {
  const HazardUpdateModel._();
  const factory HazardUpdateModel({
    required String uuid,
    required String hazard,
    required DateTime time,
    required bool active,
    @Default(false) bool offline,
    String? blurHash,
    String? image,
  }) = _HazardUpdateModel;

  factory HazardUpdateModel.create({
    required String hazard,
    required bool active,
    String? uuid,
    String? blurHash,
    String? image,
  }) => HazardUpdateModel(
    uuid: uuid ?? kUuidGen.v1(),
    hazard: hazard,
    time: DateTime.now().toUtc(),
    active: active,
    offline: true,
    blurHash: blurHash,
    image: image,
  );

  /// Maps a [HazardUpdateModel] to a database [HazardUpdatesTable] row.
  @override
  Map<String, drift.Expression<Object>> toColumns(bool nullToAbsent) =>
      HazardUpdatesTableCompanion(
        uuid: drift.Value(uuid),
        hazard: drift.Value(hazard),
        time: drift.Value(time),
        active: drift.Value(active),
        offline: drift.Value(offline),
        blurHash: drift.Value(blurHash),
        image: drift.Value(image),
      ).toColumns(nullToAbsent);

  factory HazardUpdateModel.fromJson(Map<String, dynamic> json) =>
      _$HazardUpdateModelFromJson(json);

  String timeString() => kDisplayDateFormat.format(time.toLocal());
}