CloudMusic/FNZCM/FNZCM.BlazorWasm/FnzDataSet.cs

using FNZCM.Shared.MediaModels;

namespace FNZCM.BlazorWasm
{
    internal static class FnzDataSet
    {
        public static Dictionary<string, Library> Libraries { get; set; }
        public static Dictionary<string, MediaTag> MediaTags { get; set; }

        public static int GetDuration(string lib, string disc = null, string subSet = null)
        {
            if (disc == null && subSet == null)
            {
                return Libraries[lib].Discs.Sum(d
                        => d.Value.MainTracks.Sum(t
                            => MediaTags.TryGetValue($"/media/{lib}/{d.Key}/{t.Key}", out var tag)
                                ? tag.Duration
                                : 0)
                        );
            }

            if (disc == null)
            {
                return Libraries[lib].Discs.Sum(d
                        => d.Value.SubTracks.ContainsKey(subSet)
                            ? d.Value.SubTracks[subSet].Tracks.Sum(t
                                => MediaTags.TryGetValue($"/media/{lib}/{d.Key}/{subSet}/{t.Key}", out var tag)
                                ? tag.Duration
                                : 0)
                            : 0                        
                    );
            }

            if (subSet == null)
            {
                return Libraries[lib].Discs[disc].MainTracks
                    .Sum(t => MediaTags.TryGetValue($"/media/{lib}/{disc}/{t.Key}", out var tag)
                        ? tag.Duration
                        : 0
                    );
            }

            return
                Libraries[lib].Discs[disc].SubTracks.ContainsKey(subSet)
                    ? Libraries[lib].Discs[disc].SubTracks[subSet].Tracks
                        .Sum(t => MediaTags.TryGetValue($"/media/{lib}/{disc}/{subSet}/{t.Key}", out var tag)
                            ? tag.Duration
                            : 0
                        )
                    : 0;
        }

        public static long GetFileSize(string lib, string disc = null, string subSet = null)
        {
            if (disc == null && subSet == null)
            {
                return Libraries[lib].Discs.Sum(d
                        => d.Value.MainTracks.Sum(t
                            => MediaTags.TryGetValue($"/media/{lib}/{d.Key}/{t.Key}", out var tag)
                                ? tag.Length
                                : 0)
                        
                    );
            }

            if (disc == null)
            {
                return Libraries[lib].Discs.Sum(d
                        => d.Value.SubTracks.ContainsKey(subSet)
                            ? d.Value.SubTracks[subSet].Tracks.Sum(t
                                    => MediaTags.TryGetValue($"/media/{lib}/{d.Key}/{subSet}/{t.Key}", out var tag)
                                    ? tag.Length
                                    : 0)
                            : 0
                    );
            }

            if (subSet == null)
            {
                return Libraries[lib].Discs[disc].MainTracks
                    .Sum(t => MediaTags.TryGetValue($"/media/{lib}/{disc}/{t.Key}", out var tag)
                        ? tag.Length
                        : 0
                    );
            }

            return Libraries[lib].Discs[disc].SubTracks.ContainsKey(subSet)
                ? Libraries[lib].Discs[disc].SubTracks[subSet].Tracks
                    .Sum(t => MediaTags.TryGetValue($"/media/{lib}/{disc}/{subSet}/{t.Key}", out var tag)
                        ? tag.Length
                        : 0
                    )
                : 0;
        }

        public static MediaTag? GetMediaTag(string lib, string disc, string track, string subSet = null)
        {
            if (subSet == null)
                return true == MediaTags?.TryGetValue($"/media/{lib}/{disc}/{track}", out var tagD)
                    ? tagD : null;

            return true == MediaTags?.TryGetValue($"/media/{lib}/{disc}/{subSet}/{track}", out var tagS)
                    ? tagS : null;
        }
    }
}