// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Threading;
using Microsoft.AspNetCore.Http.RequestDelegateGenerator.StaticRouteHandlerModel;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
 
namespace Microsoft.Extensions.Validation;
 
public sealed partial class ValidationsGenerator : IIncrementalGenerator
{
    internal static bool FindAddValidation(SyntaxNode syntaxNode, CancellationToken cancellationToken)
    {
        if (syntaxNode is InvocationExpressionSyntax invocationExpressionSyntax
            && invocationExpressionSyntax.TryGetMapMethodName(out var method)
            && method == "AddValidation")
        {
            return true;
        }
        return false;
    }
 
    internal static InterceptableLocation? TransformAddValidation(GeneratorSyntaxContext context, CancellationToken cancellationToken)
    {
        var node = (InvocationExpressionSyntax)context.Node;
        var semanticModel = context.SemanticModel;
        var symbol = semanticModel.GetSymbolInfo(node, cancellationToken).Symbol;
        if (symbol is not IMethodSymbol methodSymbol
            || methodSymbol.ContainingType.Name != "ValidationServiceCollectionExtensions"
            || methodSymbol.ContainingAssembly.Name != "Microsoft.Extensions.Validation")
        {
            return null;
        }
        return semanticModel.GetInterceptableLocation(node, cancellationToken);
    }
}