namespace Ramstack.FileSystem.Sub;

/// <summary>

/// Represents a wrapper around an existing <see cref="VirtualFile"/> instance.

/// </summary>

internal sealed class SubFile : VirtualFile

{

private readonly SubFileSystem _fileSystem;

private readonly VirtualFile _file;

/// <inheritdoc />

public override IVirtualFileSystem FileSystem => _fileSystem;

/// <summary>

/// Initializes a new instance of the <see cref="SubFile"/> class.

/// </summary>

/// <param name="fileSystem">The file system associated with this file.</param>

/// <param name="path">The path of the file.</param>

/// <param name="file">The <see cref="VirtualFile"/> instance to wrap.</param>

public SubFile(SubFileSystem fileSystem, string path, VirtualFile file) : base(path) =>

(_fileSystem, _file) = (fileSystem, file);

/// <inheritdoc />

protected override void RefreshCore() =>

_file.Refresh();

/// <inheritdoc />

protected override ValueTask<VirtualNodeProperties?> GetPropertiesCoreAsync(CancellationToken cancellationToken) =>

_file.GetPropertiesAsync(refresh: true, cancellationToken)!;

/// <inheritdoc />

protected override ValueTask<bool> ExistsCoreAsync(CancellationToken cancellationToken) =>

_file.ExistsAsync(cancellationToken);

/// <inheritdoc />

protected override ValueTask<Stream> OpenReadCoreAsync(CancellationToken cancellationToken) =>

_file.OpenReadAsync(cancellationToken);

/// <inheritdoc />

protected override ValueTask<Stream> OpenWriteCoreAsync(CancellationToken cancellationToken) =>

_file.OpenWriteAsync(cancellationToken);

/// <inheritdoc />

protected override ValueTask WriteCoreAsync(Stream stream, bool overwrite, CancellationToken cancellationToken) =>

_file.WriteAsync(stream, overwrite, cancellationToken);

/// <inheritdoc />

protected override ValueTask DeleteCoreAsync(CancellationToken cancellationToken) =>

_file.DeleteAsync(cancellationToken);

}