flutter_server_box/lib/data/model/container/image.dart

import 'dart:convert';

import 'package:fl_lib/fl_lib.dart';
import 'package:server_box/data/model/container/type.dart';

abstract final class ContainerImg {
  final String? repository = null;
  final String? tag = null;
  final String? id = null;
  String? get sizeMB;
  int? get containersCount;

  factory ContainerImg.fromRawJson(String s, ContainerType typ) => typ.img(s);
}

final class PodmanImg implements ContainerImg {
  @override
  final String? repository;
  @override
  final String? tag;
  @override
  final String? id;
  final int? created;
  final int? size;
  final int? containers;

  PodmanImg({this.repository, this.tag, this.id, this.created, this.size, this.containers});

  @override
  String? get sizeMB => size?.bytes2Str;

  @override
  int? get containersCount => containers;

  factory PodmanImg.fromRawJson(String str) => PodmanImg.fromJson(json.decode(str));

  String toRawJson() => json.encode(toJson());

  factory PodmanImg.fromJson(Map<String, dynamic> json) => PodmanImg(
    repository: _asString(json['repository']),
    tag: _asString(json['tag']),
    id: _asString(json['Id']),
    created: _asInt(json['Created']),
    size: _asInt(json['Size']),
    containers: _asInt(json['Containers']),
  );

  Map<String, dynamic> toJson() => {
    'repository': repository,
    'tag': tag,
    'Id': id,
    'Created': created,
    'Size': size,
    'Containers': containers,
  };
}

final class DockerImg implements ContainerImg {
  final String containers;
  final String createdAt;
  @override
  final String id;
  @override
  final String repository;
  final String size;
  @override
  final String? tag;

  DockerImg({
    required this.containers,
    required this.createdAt,
    required this.id,
    required this.repository,
    required this.size,
    required this.tag,
  });

  @override
  String? get sizeMB => size;

  @override
  int? get containersCount => containers == 'N/A' ? 0 : int.tryParse(containers);

  factory DockerImg.fromRawJson(String str) => DockerImg.fromJson(json.decode(str));

  String toRawJson() => json.encode(toJson());

  factory DockerImg.fromJson(Map<String, dynamic> json) {
    final containers = switch (json['Containers']) {
      final String a => a,
      final Object? a => a.toString(),
    };
    final repo = switch (json['Repository'] ?? json['Names']) {
      final String a => a,
      final List a => a.firstOrNull.toString(),
      final Object? a => a.toString(),
    };
    final size = switch (json['Size']) {
      final String a => a,
      final int a => a.bytes2Str,
      final Object? a => a.toString(),
    };
    return DockerImg(
      containers: containers,
      createdAt: json['CreatedAt'],
      id: json['ID'] ?? json['Id'] ?? '',
      repository: repo,
      size: size,
      tag: json['Tag'],
    );
  }

  Map<String, dynamic> toJson() => {
    'Containers': containers,
    'CreatedAt': createdAt,
    'ID': id,
    'Repository': repository,
    'Size': size,
    'Tag': tag,
  };
}

String? _asString(dynamic val) {
  if (val == null) return null;
  if (val is String) return val;
  return val.toString();
}

int? _asInt(dynamic val) {
  if (val == null) return null;
  if (val is int) return val;
  if (val is double) return val.toInt();
  return int.tryParse(val.toString());
}