// 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.Linq;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.LanguageServer.ExternalAccess.Razor;
using Roslyn.LanguageServer.Protocol;
using Roslyn.Test.Utilities;
using Roslyn.Utilities;
using Xunit;
using Xunit.Abstractions;
 
namespace Microsoft.CodeAnalysis.LanguageServer.UnitTests.SimplifyMethod;
 
public sealed class FormatNewFileTests(ITestOutputHelper? testOutputHelper) : AbstractLanguageServerProtocolTests(testOutputHelper)
{
    [Theory, CombinatorialData]
    public async Task TestFormatNewFileAsync(bool mutatingLspWorkspace)
    {
        var markup =
            """
            // This is a file header
 
            using System;
            using System.Threading.Tasks;
 
            namespace test;
 
            class Goo
            {
                public void M()
                {
                }
            }
            """;
 
        var input = """
            using System;
 
            namespace test;
 
            public partial class MyComponent
            {
            }
            """;
 
        var expected = """
            // This is a file header
            
            namespace test
            {
                public partial class MyComponent
                {
                }
            }
            """;
 
        await using var testLspServer = await CreateTestLspServerAsync(markup, mutatingLspWorkspace);
 
        var newFilePath = "C:\\MyComponent.razor.cs";
 
        var result = await RunHandlerAsync(testLspServer, newFilePath, input);
        AssertEx.EqualOrDiff(expected, result);
    }
 
    private static async Task<string?> RunHandlerAsync(TestLspServer testLspServer, string newFilePath, string input)
    {
        var project = testLspServer.GetCurrentSolution().Projects.First();
        Contract.ThrowIfNull(project.FilePath);
 
        var parameters = new FormatNewFileParams()
        {
            Project = new TextDocumentIdentifier
            {
                Uri = ProtocolConversions.CreateAbsoluteUri(project.FilePath)
            },
            Document = new TextDocumentIdentifier
            {
                Uri = ProtocolConversions.CreateAbsoluteUri(newFilePath)
            },
            Contents = input
        };
 
        return await testLspServer.ExecuteRequestAsync<FormatNewFileParams, string?>(FormatNewFileHandler.FormatNewFileMethodName, parameters, CancellationToken.None);
    }
}