// 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.
 
#nullable disable
 
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Xml.Linq;
using Microsoft.CodeAnalysis.CodeLens;
using Microsoft.CodeAnalysis.Test.Utilities;
using Xunit;
 
namespace Microsoft.CodeAnalysis.Editor.UnitTests.CodeLens;
 
[UseExportProvider]
public abstract class AbstractCodeLensTest
{
    protected static async Task RunCountTest(XElement input, int cap = 0)
    {
        using var workspace = EditorTestWorkspace.Create(input);
        foreach (var annotatedDocument in workspace.Documents.Where(d => d.AnnotatedSpans.Any()))
        {
            var document = workspace.CurrentSolution.GetDocument(annotatedDocument.Id);
            var syntaxNode = await document.GetSyntaxRootAsync();
            foreach (var annotatedSpan in annotatedDocument.AnnotatedSpans)
            {
                var isCapped = annotatedSpan.Key.StartsWith("capped");
                var expected = int.Parse(annotatedSpan.Key[(isCapped ? 6 : 0)..]);
 
                foreach (var span in annotatedSpan.Value)
                {
                    var declarationSyntaxNode = syntaxNode.FindNode(span);
                    var result = await new CodeLensReferencesService().GetReferenceCountAsync(workspace.CurrentSolution, annotatedDocument.Id,
                        declarationSyntaxNode, cap, CancellationToken.None);
                    Assert.NotNull(result);
                    Assert.Equal(expected, result.Value.Count);
                    Assert.Equal(isCapped, result.Value.IsCapped);
                }
            }
        }
    }
 
    protected static Task RunCountTest(string input, int cap = 0)
        => RunCountTest(XElement.Parse(input), cap);
 
    protected static async Task RunReferenceTest(XElement input)
    {
        using var workspace = EditorTestWorkspace.Create(input);
        foreach (var annotatedDocument in workspace.Documents.Where(d => d.AnnotatedSpans.Any()))
        {
            var document = workspace.CurrentSolution.GetDocument(annotatedDocument.Id);
            var syntaxNode = await document.GetSyntaxRootAsync();
            foreach (var annotatedSpan in annotatedDocument.AnnotatedSpans)
            {
                var expected = int.Parse(annotatedSpan.Key);
 
                foreach (var span in annotatedSpan.Value)
                {
                    var declarationSyntaxNode = syntaxNode.FindNode(span);
                    var result = await new CodeLensReferencesService().FindReferenceLocationsAsync(workspace.CurrentSolution,
                        annotatedDocument.Id, declarationSyntaxNode, CancellationToken.None);
                    Assert.True(result.HasValue);
                    Assert.Equal(expected, result.Value.Length);
                }
            }
        }
    }
 
    protected static Task RunReferenceTest(string input)
        => RunReferenceTest(XElement.Parse(input));
 
    protected static async Task RunMethodReferenceTest(XElement input)
    {
        using var workspace = EditorTestWorkspace.Create(input);
        foreach (var annotatedDocument in workspace.Documents.Where(d => d.AnnotatedSpans.Any()))
        {
            var document = workspace.CurrentSolution.GetDocument(annotatedDocument.Id);
            var syntaxNode = await document.GetSyntaxRootAsync();
            foreach (var annotatedSpan in annotatedDocument.AnnotatedSpans)
            {
                var expected = int.Parse(annotatedSpan.Key);
 
                foreach (var span in annotatedSpan.Value)
                {
                    var declarationSyntaxNode = syntaxNode.FindNode(span);
                    var result = await new CodeLensReferencesService().FindReferenceMethodsAsync(workspace.CurrentSolution,
                        annotatedDocument.Id, declarationSyntaxNode, CancellationToken.None);
                    Assert.True(result.HasValue);
                    Assert.Equal(expected, result.Value.Length);
                }
            }
        }
    }
 
    protected static Task RunMethodReferenceTest(string input)
        => RunMethodReferenceTest(XElement.Parse(input));
 
    protected static async Task RunFullyQualifiedNameTest(XElement input)
    {
        using var workspace = EditorTestWorkspace.Create(input);
        foreach (var annotatedDocument in workspace.Documents.Where(d => d.AnnotatedSpans.Any()))
        {
            var document = workspace.CurrentSolution.GetDocument(annotatedDocument.Id);
            var syntaxNode = await document.GetSyntaxRootAsync();
            foreach (var annotatedSpan in annotatedDocument.AnnotatedSpans)
            {
                var expected = annotatedSpan.Key;
 
                foreach (var span in annotatedSpan.Value)
                {
                    var declarationSyntaxNode = syntaxNode.FindNode(span);
                    var actual = await new CodeLensReferencesService().GetFullyQualifiedNameAsync(workspace.CurrentSolution,
                        annotatedDocument.Id, declarationSyntaxNode, CancellationToken.None);
                    Assert.Equal(expected, actual);
                }
            }
        }
    }
 
    protected static Task RunFullyQualifiedNameTest(string input)
        => RunFullyQualifiedNameTest(XElement.Parse(input));
}