// 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 Microsoft.CodeAnalysis.CodeGeneration;
using Microsoft.CodeAnalysis.Editing;
using Microsoft.CodeAnalysis.LanguageService;
using Microsoft.CodeAnalysis.Shared.Extensions;
 
#if CODE_STYLE
using DeclarationModifiers = Microsoft.CodeAnalysis.Internal.Editing.DeclarationModifiers;
#else
using DeclarationModifiers = Microsoft.CodeAnalysis.Editing.DeclarationModifiers;
#endif
 
namespace Microsoft.CodeAnalysis.ImplementInterface;
 
internal abstract partial class AbstractImplementInterfaceService
{
    private partial class ImplementInterfaceGenerator
    {
        private ISymbol GenerateMethod(
            Compilation compilation,
            IMethodSymbol method,
            Accessibility accessibility,
            DeclarationModifiers modifiers,
            bool generateAbstractly,
            bool useExplicitInterfaceSymbol,
            string memberName)
        {
            var syntaxFacts = Document.GetRequiredLanguageService<ISyntaxFactsService>();
 
            var updatedMethod = method.EnsureNonConflictingNames(State.ClassOrStructType, syntaxFacts);
 
            updatedMethod = updatedMethod.RemoveInaccessibleAttributesAndAttributesOfTypes(
                State.ClassOrStructType,
                AttributesToRemove(compilation));
 
            return CodeGenerationSymbolFactory.CreateMethodSymbol(
                updatedMethod,
                accessibility: accessibility,
                modifiers: modifiers,
                explicitInterfaceImplementations: useExplicitInterfaceSymbol ? [updatedMethod] : default,
                name: memberName,
                statements: generateAbstractly
                    ? default
                    : [CreateStatement(compilation, updatedMethod)]);
        }
 
        private SyntaxNode CreateStatement(Compilation compilation, IMethodSymbol method)
        {
            var factory = Document.GetRequiredLanguageService<SyntaxGenerator>();
            return ThroughMember == null
                ? factory.CreateThrowNotImplementedStatement(compilation)
                : factory.GenerateDelegateThroughMemberStatement(method, ThroughMember);
        }
    }
}