// 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.Collections.Generic;
using System.Collections.Immutable;
using System.Diagnostics;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.CodeActions;
using Microsoft.CodeAnalysis.Editor.Shared.Utilities;
using Microsoft.CodeAnalysis.ErrorReporting;
using Microsoft.VisualStudio.Language.Intellisense;
using Microsoft.VisualStudio.Text;
 
namespace Microsoft.CodeAnalysis.Editor.Implementation.Suggestions;
 
/// <summary>
/// Lightbulb item that has child items that should be displayed as 'menu items'
/// (as opposed to 'flavor items').
/// </summary>
internal sealed class EditorSuggestedActionWithNestedActions(
    IThreadingContext threadingContext,
    SuggestedActionsSourceProvider sourceProvider,
    Solution originalSolution,
    ITextBuffer subjectBuffer,
    object provider,
    CodeAction codeAction,
    ImmutableArray<SuggestedActionSet> nestedActionSets)
    : EditorSuggestedAction(threadingContext, sourceProvider, originalSolution, subjectBuffer, provider, codeAction)
{
    public readonly ImmutableArray<SuggestedActionSet> NestedActionSets = nestedActionSets;
 
    public sealed override bool HasActionSets => true;
 
    public sealed override Task<IEnumerable<SuggestedActionSet>> GetActionSetsAsync(CancellationToken cancellationToken)
        => Task.FromResult<IEnumerable<SuggestedActionSet>>(NestedActionSets);
 
    protected sealed override Task InnerInvokeAsync(IProgress<CodeAnalysisProgress> progress, CancellationToken cancellationToken)
    {
        // A code action with nested actions is itself never invokable.  So just do nothing if this ever gets asked.
        // Report a message in debug and log a watson exception so that if this is hit we can try to narrow down how
        // this happened.
        Debug.Fail($"{nameof(InnerInvokeAsync)} should not be called on a {nameof(EditorSuggestedActionWithNestedActions)}");
        FatalError.ReportAndCatch(new InvalidOperationException($"{nameof(InnerInvokeAsync)} should not be called on a {nameof(EditorSuggestedActionWithNestedActions)}"), ErrorSeverity.Critical);
 
        return Task.CompletedTask;
    }
}