spotube/lib/services/song_link/song_link.dart

library song_link;

import 'dart:convert';

import 'package:dio/dio.dart';
import 'package:freezed_annotation/freezed_annotation.dart';
import 'package:html/parser.dart';

part 'model.dart';

part 'song_link.freezed.dart';
part 'song_link.g.dart';

abstract class SongLinkService {
  static Future<List<SongLink>> links(String spotifyId) async {
    final dio = Dio();

    final res = await dio.get(
      "https://song.link/s/$spotifyId",
      options: Options(
        headers: {
          "Accept":
              "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
          "User-Agent":
              "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36"
        },
        responseType: ResponseType.plain,
      ),
    );

    final document = parse(res.data);

    final script = document.getElementById("__NEXT_DATA__")?.text;

    if (script == null) {
      return <SongLink>[];
    }

    final pageProps = jsonDecode(script) as Map<String, dynamic>;
    final songLinks =
        pageProps["props"]["pageProps"]["pageData"]["sections"].firstWhere(
      (section) => section["sectionId"] == "section|auto|links|listen",
    )["links"] as List;

    return songLinks.map((link) => SongLink.fromJson(link)).toList();
  }
}