// 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.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.LanguageServer.Handler;
using Microsoft.CodeAnalysis.LanguageServer.Handler.SemanticTokens;
using Microsoft.CodeAnalysis.Options;
using Roslyn.LanguageServer.Protocol;
using Roslyn.Utilities;
 
namespace Microsoft.CodeAnalysis.LanguageServer.ExternalAccess.Razor;
 
[Method(SemanticRangesMethodName)]
internal class SemanticTokensRangesHandler : ILspServiceDocumentRequestHandler<SemanticTokensRangesParams, SemanticTokens>
{
    public const string SemanticRangesMethodName = "roslyn/semanticTokenRanges";
    private readonly IGlobalOptionService _globalOptions;
    private readonly SemanticTokensRefreshQueue _semanticTokenRefreshQueue;
 
    public bool MutatesSolutionState => false;
 
    public bool RequiresLSPSolution => true;
 
    public SemanticTokensRangesHandler(
        IGlobalOptionService globalOptions,
        SemanticTokensRefreshQueue semanticTokensRefreshQueue)
    {
        _globalOptions = globalOptions;
        _semanticTokenRefreshQueue = semanticTokensRefreshQueue;
    }
 
    public TextDocumentIdentifier GetTextDocumentIdentifier(SemanticTokensRangesParams request)
    {
        Contract.ThrowIfNull(request.TextDocument);
        return request.TextDocument;
    }
 
    public async Task<SemanticTokens> HandleRequestAsync(
            SemanticTokensRangesParams request,
            RequestContext context,
            CancellationToken cancellationToken)
    {
        Contract.ThrowIfNull(request.TextDocument, "TextDocument is null.");
        var tokensData = await SemanticTokensHelpers.HandleRequestHelperAsync(_globalOptions, _semanticTokenRefreshQueue, request.Ranges, context, cancellationToken).ConfigureAwait(false);
        return new SemanticTokens { Data = tokensData };
    }
}