@using Volo.Abp
@implements IDisposable
@inject IComponentBundleManager BundleManager
@inject PersistentComponentState PersistentComponentState

@if (StyleFiles != null)
{
    foreach (var file in StyleFiles)
    {
        <link rel="stylesheet" href="@file" />
    }
}

@code {
    [Parameter]
    public List<string>? WebAssemblyStyleFiles { get; set; }

    [Parameter]
    public string? BundleName { get; set; }

    private List<string>? StyleFiles { get; set; }

    private PersistingComponentStateSubscription persistingSubscription;

    protected override async Task OnInitializedAsync()
    {
        if (BundleName == null)
        {
            throw new AbpException("The BundleName parameter of the AbpStyles component can not be null!");
        }

        persistingSubscription = PersistentComponentState.RegisterOnPersisting(PersistStyleFiles);

        if (PersistentComponentState.TryTakeFromJson<List<string>>(nameof(StyleFiles), out var restoredStyleFiles))
        {
            StyleFiles = restoredStyleFiles;
        }
        else
        {
            StyleFiles = (await BundleManager.GetStyleBundleFilesAsync(BundleName!)).ToList();
        }

        if (OperatingSystem.IsBrowser() && WebAssemblyStyleFiles != null)
        {
            StyleFiles?.AddRange(WebAssemblyStyleFiles);
        }
    }

    private Task PersistStyleFiles()
    {
        PersistentComponentState.PersistAsJson(nameof(StyleFiles), StyleFiles);
        return Task.CompletedTask;
    }

    public void Dispose() => persistingSubscription.Dispose();
}