using System.Collections.Generic;
using System.Linq;
using Sony.Filtr.Functional;

namespace Sony.Filtr.ApolloAPI.Models
{
    public class FavoritePlaylistsResponse
    {
        public string[] Playlists { get; set; }

        public PlaylistFavorites Normalize()
        {
            /*
                "spotify_None_3ZTL8MBRGOWvGwU75d6jPi",
                "apple_us_pl.6db5f7b47286460e9928d09d9ac0be69",
             */
            return this.Playlists
                .Select(p => p.Split('_'))
                .Aggregate(
                    (new List<string>(), new List<(string, string)>()),
                    (acc, vendor_market_id) => {
                        switch (vendor_market_id[0].ToLower())
                        {
                            case "spotify":
                                {
                                    acc.Item1.Add(vendor_market_id[2]);
                                    break;
                                }
                            case "apple":
                                {
                                    acc.Item2.Add((vendor_market_id[1], vendor_market_id[2]));
                                    break;
                                }
                            default: break;
                        }

                        return acc;
                    })
                .ToResult()
                .Bind(tuple => new PlaylistFavorites(tuple.Item1, tuple.Item2))
                .Flatten();
        }
    }

    public class PlaylistFavorites
    {
        public readonly string[] SpotifyPlaylistIds;

        public readonly (string Market, string Id)[] ApplePlaylists;

        public PlaylistFavorites(IEnumerable<string> spoitfyIds, IEnumerable<(string, string)> appleIds)
        {
            this.SpotifyPlaylistIds = spoitfyIds.ToArray();
            this.ApplePlaylists = appleIds.ToArray();
        }
    }
}