import 'package:dio/dio.dart';

import '../../models/track.dart';

/// `GET /api/radio?seed_track=<uuid>&limit=<int>`. Returns the seed
/// at index 0 followed by up to `limit-1` weighted-shuffle picks
/// scored by the server's recommendation engine. The shape matches
/// what `playerActions.playTracks` expects, so a radio start is just
/// one fetch + one playTracks call.
class RadioApi {
  RadioApi(this._dio);
  final Dio _dio;

  Future<List<TrackRef>> seedTrack(String trackId, {int? limit}) async {
    final r = await _dio.get<Map<String, dynamic>>(
      '/api/radio',
      queryParameters: {
        'seed_track': trackId,
        if (limit != null) 'limit': limit,
      },
    );
    final raw = (r.data?['tracks'] as List?) ?? const [];
    return raw
        .map((e) => TrackRef.fromJson((e as Map).cast<String, dynamic>()))
        .toList(growable: false);
  }
}