CloudMusic/FNZCM/FNZCM.BlazorWasm/UI/App.razor.cs

using FNZCM.Shared.MediaModels;
using FNZCM.Shared.MetadataModels;
using Microsoft.AspNetCore.Components;
using Microsoft.JSInterop;

namespace FNZCM.BlazorWasm.UI
{
    public partial class App
    {
        [Inject]
        private NavigationManager nm { get; set; }

        [Inject]
        private IJSRuntime js { get; set; }

        private LoadingProgress? Progress { get; set; }
        private Dictionary<string, Library>? Libraries { get; set; }
        private Dictionary<string, MediaTag>? MediaTags { get; set; }

        private Library CurrentLibrary { get; set; }
        private string CurrentLibraryKey { get; set; }

        private Disc? CurrentDisc { get; set; }
        private string CurrentDiscKey { get; set; }

        private List<KeyValuePair<string, Library>> SelectedLibs { get; set; } = new();

        protected override async Task OnInitializedAsync()
        {
            ApiClient.HellNm = nm;
            base.OnInitialized();

            do
            {
                Progress = await ApiClient.GetProgress();
                StateHasChanged();
                if (Progress?.IsLoading == false) break;
                Thread.Sleep(1000);
            } while (true);

            Libraries = await ApiClient.GetLibraries();
            StateHasChanged();

            MediaTags = await ApiClient.GetMediaTags();
            if (Libraries?.Any() == true)
            {
                var f = Libraries.OrderBy(p => p.Key).FirstOrDefault();
                CurrentLibraryKey = f.Key;
                CurrentLibrary = f.Value;
            }
            StateHasChanged();
        }

        private void SelectLibrary(string libKey)
        {
            CurrentLibrary = Libraries[libKey];
            CurrentLibraryKey = libKey;
        }

        private void SelectDisc(string discKey)
        {
            CurrentDisc = CurrentLibrary.Discs[discKey];
            CurrentDiscKey = discKey;
            js.InvokeVoidAsync("ShowModalDisc");
        }

        private string GetDiscDurationDisplay(string lib, string disc)
        {
            var totalSeconds = Libraries[lib].Discs[disc].MainTracks.Sum(p =>
            {
                var mediaPath = $"/media/{lib}/{disc}/{p.Key}";
                return MediaTags.TryGetValue(mediaPath, out var tag)
                ? tag.Duration
                : 0;
            });
            var ts = TimeSpan.FromSeconds(totalSeconds);

            return ts.Hours > 0
                ? $"{Math.Floor(ts.TotalHours):00}:{ts.Minutes:00}:{ts.Seconds:00}"
                : $"{Math.Floor(ts.TotalMinutes):00}:{ts.Seconds:00}";
        }

        public void SelectedLibraryChanged()
        {
            if (SelectedLibs.Count > 0)
            {
                var f = SelectedLibs.First();
                CurrentLibraryKey = f.Key;
                CurrentLibrary = f.Value;
                StateHasChanged();
            }
        }
    }
}