using System;
using System.Collections.Generic;
using System.Linq;

namespace Sony.Filtr.ApolloAPI.Models.Apple
{
    public class ApplePlaylistListChartSongsData
    {
        public readonly IReadOnlyList<AppleChartSongData> ChartSongs;
        public readonly DateTime PlaylistLastModifiedDate;
        public readonly string Storefront;

        public ApplePlaylistListChartSongsData(ApplePlaylistData playlist, string storefront)
        {
            this.ChartSongs = playlist?.relationships?.tracks?.data?
                .Where(p => p.attributes != null)
                .Select(t => new AppleChartSongData { attributes = GetAttributes(t.attributes), href = t.href, id = t.id, type = t.type })
                .ToList()
                .AsReadOnly();

            this.PlaylistLastModifiedDate = DateTime.Parse(playlist.attributes.lastModifiedDate);
            this.Storefront = storefront;
        }

        public bool HasData
        {
            get { return this.ChartSongs != null; }
        }

        private static AppleChartSongAttributes GetAttributes(AppleTrackAttributes trackAttributes)
        {
            return new AppleChartSongAttributes
            {
                artistName = trackAttributes.artistName,
                artwork = trackAttributes.artwork != null ? new AppleArtwork
                {
                    bgColor = trackAttributes.artwork.bgColor,
                    url = trackAttributes.artwork.url,
                    height = trackAttributes.artwork.height,
                    textColor1 = trackAttributes.artwork.textColor1,
                    textColor2 = trackAttributes.artwork.textColor2,
                    textColor3 = trackAttributes.artwork.textColor3,
                    textColor4 = trackAttributes.artwork.textColor4,
                    width = trackAttributes.artwork.width
                } : null,
                discNumber = trackAttributes.discNumber,
                durationInMillis = trackAttributes.durationInMillis,
                genreNames = trackAttributes.genreNames,
                name = trackAttributes.name,
                releaseDate = trackAttributes.releaseDate,
                trackNumber = trackAttributes.trackNumber,
                url = trackAttributes.url,
                isrc = trackAttributes.isrc
            };
        }
    }
}