list_response.dart

import 'dart:convert';

import 'package:equatable/equatable.dart';
import 'package:iStoria/core/models/links.dart';
import 'package:iStoria/core/models/meta.dart';
import 'package:iStoria/core/models/response_converter.dart';
import 'package:json_annotation/json_annotation.dart';

part 'list_response.g.dart';

@JsonSerializable(explicitToJson: true)
class ListResponse<T> extends Equatable {
  @ResponseConverter()
  final List<T> data;
  final Links links;
  final Meta meta;

  ListResponse({
    this.data,
    this.links,
    this.meta,
  });

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

  factory ListResponse.fromResponse(String fixture) {
    return ListResponse.fromJson(json.decode(fixture));
  }

  Map<String, dynamic> toJson() => _$ListResponseToJson(this);

  @override
  List<Object> get props => [data];
}

response_converter.dart

import 'package:iStoria/features/intro/data/models/intro_step.dart';
import 'package:iStoria/features/stages/data/models/stage.dart';
import 'package:iStoria/features/stories/data/models/story.dart';
import 'package:iStoria/features/stories/data/models/story_page.dart';
import 'package:iStoria/features/stories/data/models/summary.dart';
import 'package:iStoria/features/stages/data/models/chapter.dart';
import 'package:json_annotation/json_annotation.dart';

class ResponseConverter<T> implements JsonConverter<T, Object> {
  const ResponseConverter();

  @override
  T fromJson(Object json) {
    if (json is Map<String, dynamic>) {
      switch (json['model_type']) {
        case 'story':
          return Story.fromJson(json) as T;
          break;
        case 'stage':
          return Stage.fromJson(json) as T;
          break;
        case 'chapter':
          return Chapter.fromJson(json) as T;
          break;
        case 'page':
          return StoryPage.fromJson(json) as T;
          break;
        case 'summary':
          return Summary.fromJson(json) as T;
          break;
        case 'step':
          return IntroStep.fromJson(json) as T;
          break;
      }
    }
    return json as T;
  }

  @override
  Object toJson(T object) {
    return object;
  }
}

single_response.dart

import 'dart:convert';

import 'package:equatable/equatable.dart';
import 'package:iStoria/core/models/response_converter.dart';
import 'package:json_annotation/json_annotation.dart';

part 'single_response.g.dart';

@JsonSerializable(explicitToJson: true)
class SingleResponse<T> extends Equatable {
  @ResponseConverter()
  final T data;

  SingleResponse(this.data);

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

  factory SingleResponse.fromResponse(String fixture) {
    return SingleResponse.fromJson(json.decode(fixture));
  }

  Map<String, dynamic> toJson() => _$SingleResponseToJson(this);

  @override
  List<Object> get props => [data];
}