// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System;
using System.Composition;
using Microsoft.CodeAnalysis.Host;
using Microsoft.CodeAnalysis.Host.Mef;

namespace Microsoft.CodeAnalysis.Editor.StringCopyPaste;

internal interface IStringCopyPasteService : IWorkspaceService
{
    bool TrySetClipboardData(string key, string data);
    string? TryGetClipboardData(string key);
}

[ExportWorkspaceService(typeof(IStringCopyPasteService)), Shared]
internal sealed class DefaultStringCopyPasteService : IStringCopyPasteService
{
    [ImportingConstructor]
    [Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
    public DefaultStringCopyPasteService()
    {
    }

    // Note: we very intentionally do not try to store/retrieve any data in this default implementation. at this
    // layer we have no information about the clipboard, so it would be dangerous to presume that that information
    // had been validly associated with latest clipboard operation and had not been affected by things outside our
    // awareness.

    public bool TrySetClipboardData(string key, string data)
        => false;

    public string? TryGetClipboardData(string key)
        => null;
}
