PIbd-31_IevlewaMD_PMD/lib/data/mapper/album_mapper.dart

import 'dart:convert';

import 'package:dio/dio.dart';
import 'package:pmd_labs/data/dto/album_dto.dart';
import 'package:pmd_labs/card_data.dart';
import 'package:uuid/uuid.dart';

import '../../home_page/home_page.dart';

String generateAlbumId(String name, String artist, String url) {
  return '$name|$artist|$url';
}

extension AlbumDataDtoMapper on AlbumDataDto {
  List<AlbumDataDto> fetchAlbums(List<dynamic> albumsData) {
    const String defaultImageUrl = "https://i.ibb.co/VwCkRD4/image.jpg";
    List<AlbumDataDto> albums = [];

    for (var album in albumsData) {
      String? albumImage;

      // Ищем наиболее подходящее изображение
      List<dynamic> images = album['image'] as List<dynamic>;
      var largestImage = images.firstWhere(
        (image) => image['size'] == 'mega',
        orElse: () => images.firstWhere(
          (image) => image['size'] == 'extralarge',
          orElse: () => images.firstWhere(
            (image) => image['size'] == 'large',
            orElse: () => null, // запасной вариант
          ),
        ),
      );
      if (largestImage['#text'] != "")
        albumImage = largestImage['#text'] as String?;
      else
        albumImage = defaultImageUrl;

      if (album['name'] != "(null)" && album['artist'] != "(null)") {
        final id = generateAlbumId(album['name'], album['artist'], album['url']);
        albums.add(AlbumDataDto(
          id: id,
          title: album['name'] as String?,
          artist: album['artist'] as String?,
          year: "",
          genres: [],
          tracks: [],
          summary: "",
          url: album['url'] as String?,
          images: AlbumDataImagesDto(
            jpg: AlbumDataImagesJPGDto(image_url: albumImage),
          ),
        ));
      }
    }
    return albums;
  }

  Future<AlbumDataDto> fetchAlbumDetails(Map<String, dynamic> data, AlbumDataDto album) async {
    if (data['album'] != null) {
      // Получаем жанры и год
      String year = "";
      List<String> genres = [];

      // Находим год в тегах
      year = (data['album']?['tags']?['tag'] as List).firstWhere(
            (tag) => tag['name'].contains(RegExp(r'^\d{4}$')),
            orElse: () => null,
          )?['name'] ??
          "_";

      // Получаем список жанров
      genres = List<String>.from((data['album']?['tags']?['tag'] as List<dynamic>? ?? [])
          .map((tag) => tag['name'] as String));

      // Заполняем список треков
      List<String> tracks = List<String>.from(
          (data['album']?['tracks']?['track'] as List<dynamic>? ?? [])
              .map((track) => track['name'] as String));

      // Обновляем информацию в нашем DTO альбома
      album.year = year;
      album.genres = genres;
      album.tracks = tracks;

      album.summary = data['album']?['wiki']?['summary'] ?? "missing";
    }

    return album;
  }

  CardData toDomain() {
    return CardData(
      id: id,
      title: title ?? 'UNKNOWN',
      artist: artist ?? 'UNKNOWN',
      year: year ?? 'UNKNOWN',
      url: url ?? 'UNKNOWN',
      summary: summary ?? 'UNKNOWN',
      genres: genres ?? ['UNKNOWN'],
      tracks: tracks ?? ['UNKNOWN'],
      imageUrl: images?.jpg?.image_url ?? 'UNKNOWN',
    );
  }
}

extension AlbumDtoMapper on AlbumDto {
  List<AlbumDataDto> fetchAlbumsWithPagination(List<dynamic> albumsData) {
    List<AlbumDataDto> albums = AlbumDataDto().fetchAlbums(albumsData);
    return albums;
  }

  HomeData toDomain() {
    return HomeData(
      data: data?.map((e) => e.toDomain()).toList(),
      nextPage: (pagination?.hasNextPage ?? false) ? ((pagination?.currentPage ?? 0) + 1) : null,
    );
  }
}