// 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.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Diagnostics;
using Microsoft.CodeAnalysis.Host;
using Microsoft.CodeAnalysis.Options;
 
namespace Microsoft.CodeAnalysis.CodeGeneration;
 
internal interface ICodeGenerationService : ILanguageService
{
    CodeGenerationOptions DefaultOptions { get; }
    CodeGenerationOptions GetCodeGenerationOptions(IOptionsReader options);
    CodeGenerationContextInfo GetInfo(CodeGenerationContext context, CodeGenerationOptions options, ParseOptions parseOptions);
 
    /// <summary>
    /// Returns a newly created event declaration node from the provided event.
    /// </summary>
    SyntaxNode CreateEventDeclaration(IEventSymbol @event, CodeGenerationDestination destination, CodeGenerationContextInfo info, CancellationToken cancellationToken);
 
    /// <summary>
    /// Returns a newly created field declaration node from the provided field.
    /// </summary>
    SyntaxNode CreateFieldDeclaration(IFieldSymbol field, CodeGenerationDestination destination, CodeGenerationContextInfo info, CancellationToken cancellationToken);
 
    /// <summary>
    /// Returns a newly created method declaration node from the provided method.
    /// TODO: do not return null (https://github.com/dotnet/roslyn/issues/58243)
    /// </summary>
    SyntaxNode? CreateMethodDeclaration(IMethodSymbol method, CodeGenerationDestination destination, CodeGenerationContextInfo info, CancellationToken cancellationToken);
 
    /// <summary>
    /// Returns a newly created property declaration node from the provided property.
    /// </summary>
    SyntaxNode CreatePropertyDeclaration(IPropertySymbol property, CodeGenerationDestination destination, CodeGenerationContextInfo info, CancellationToken cancellationToken);
 
    /// <summary>
    /// Returns a newly created named type declaration node from the provided named type.
    /// </summary>
    SyntaxNode CreateNamedTypeDeclaration(INamedTypeSymbol namedType, CodeGenerationDestination destination, CodeGenerationContextInfo info, CancellationToken cancellationToken);
 
    /// <summary>
    /// Returns a newly created namespace declaration node from the provided namespace.
    /// </summary>
    SyntaxNode CreateNamespaceDeclaration(INamespaceSymbol @namespace, CodeGenerationDestination destination, CodeGenerationContextInfo info, CancellationToken cancellationToken);
 
    /// <summary>
    /// Adds an event into destination.
    /// </summary>
    TDeclarationNode AddEvent<TDeclarationNode>(TDeclarationNode destination, IEventSymbol @event, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Adds a field into destination.
    /// </summary>
    TDeclarationNode AddField<TDeclarationNode>(TDeclarationNode destination, IFieldSymbol field, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Adds a method into destination.
    /// </summary>
    TDeclarationNode AddMethod<TDeclarationNode>(TDeclarationNode destination, IMethodSymbol method, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Adds a property into destination. 
    /// </summary>
    TDeclarationNode AddProperty<TDeclarationNode>(TDeclarationNode destination, IPropertySymbol property, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Adds a named type into destination. 
    /// </summary>
    TDeclarationNode AddNamedType<TDeclarationNode>(TDeclarationNode destination, INamedTypeSymbol namedType, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Adds a namespace into destination. 
    /// </summary>
    TDeclarationNode AddNamespace<TDeclarationNode>(TDeclarationNode destination, INamespaceSymbol @namespace, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Adds members into destination.
    /// </summary>
    TDeclarationNode AddMembers<TDeclarationNode>(TDeclarationNode destination, IEnumerable<ISymbol> members, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Adds the parameters to destination.
    /// </summary>
    TDeclarationNode AddParameters<TDeclarationNode>(TDeclarationNode destination, IEnumerable<IParameterSymbol> parameters, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Adds the attributes to destination.
    /// </summary>
    TDeclarationNode AddAttributes<TDeclarationNode>(TDeclarationNode destination, IEnumerable<AttributeData> attributes, SyntaxToken? target, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Remove the given attribute from destination.
    /// </summary>
    TDeclarationNode RemoveAttribute<TDeclarationNode>(TDeclarationNode destination, SyntaxNode attributeToRemove, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Remove the given attribute from destination.
    /// </summary>
    TDeclarationNode RemoveAttribute<TDeclarationNode>(TDeclarationNode destination, AttributeData attributeToRemove, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Update the modifiers list for the given declaration node.
    /// </summary>
    TDeclarationNode UpdateDeclarationModifiers<TDeclarationNode>(TDeclarationNode declaration, IEnumerable<SyntaxToken> newModifiers, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Update the accessibility modifiers for the given declaration node, retaining the trivia of the existing modifiers.
    /// </summary>
    TDeclarationNode UpdateDeclarationAccessibility<TDeclarationNode>(TDeclarationNode declaration, Accessibility newAccessibility, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Update the type for the given declaration node.
    /// </summary>
    TDeclarationNode UpdateDeclarationType<TDeclarationNode>(TDeclarationNode declaration, ITypeSymbol newType, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Replace the existing members with the given newMembers for the given declaration node.
    /// </summary>
    TDeclarationNode UpdateDeclarationMembers<TDeclarationNode>(TDeclarationNode declaration, IList<ISymbol> newMembers, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Adds the statements to destination.
    /// </summary>
    TDeclarationNode AddStatements<TDeclarationNode>(TDeclarationNode destination, IEnumerable<SyntaxNode> statements, CodeGenerationContextInfo info, CancellationToken cancellationToken) where TDeclarationNode : SyntaxNode;
 
    /// <summary>
    /// Adds a field with the provided signature into destination.
    /// </summary>
    Task<Document> AddEventAsync(CodeGenerationSolutionContext context, INamedTypeSymbol destination, IEventSymbol @event, CancellationToken cancellationToken);
 
    /// <summary>
    /// Adds a field with the provided signature into destination.
    /// </summary>
    Task<Document> AddFieldAsync(CodeGenerationSolutionContext context, INamedTypeSymbol destination, IFieldSymbol field, CancellationToken cancellationToken);
 
    /// <summary>
    /// Adds a method with the provided signature into destination.
    /// </summary>
    Task<Document> AddMethodAsync(CodeGenerationSolutionContext context, INamedTypeSymbol destination, IMethodSymbol method, CancellationToken cancellationToken);
 
    /// <summary>
    /// Adds a property with the provided signature into destination.
    /// </summary>
    Task<Document> AddPropertyAsync(CodeGenerationSolutionContext context, INamedTypeSymbol destination, IPropertySymbol property, CancellationToken cancellationToken);
 
    /// <summary>
    /// Adds a named type into destination.
    /// </summary>
    Task<Document> AddNamedTypeAsync(CodeGenerationSolutionContext context, INamedTypeSymbol destination, INamedTypeSymbol namedType, CancellationToken cancellationToken);
 
    /// <summary>
    /// Adds a named type into destination.
    /// </summary>
    Task<Document> AddNamedTypeAsync(CodeGenerationSolutionContext context, INamespaceSymbol destination, INamedTypeSymbol namedType, CancellationToken cancellationToken);
 
    /// <summary>
    /// Adds a namespace into destination.
    /// </summary>
    Task<Document> AddNamespaceAsync(CodeGenerationSolutionContext context, INamespaceSymbol destination, INamespaceSymbol @namespace, CancellationToken cancellationToken);
 
    /// <summary>
    /// Adds a namespace or type into destination.
    /// </summary>
    Task<Document> AddNamespaceOrTypeAsync(CodeGenerationSolutionContext context, INamespaceSymbol destination, INamespaceOrTypeSymbol namespaceOrType, CancellationToken cancellationToken);
 
    /// <summary>
    /// Adds all the provided members into destination.
    /// </summary>
    Task<Document> AddMembersAsync(CodeGenerationSolutionContext context, INamedTypeSymbol destination, IEnumerable<ISymbol> members, CancellationToken cancellationToken);
 
    /// <summary>
    /// <c>true</c> if destination is a location where other symbols can be added to.
    /// </summary>
    bool CanAddTo(ISymbol destination, Solution solution, CancellationToken cancellationToken);
 
    /// <summary>
    /// <c>true</c> if destination is a location where other symbols can be added to.
    /// </summary>
    bool CanAddTo(SyntaxNode destination, Solution solution, CancellationToken cancellationToken);
 
    /// <summary>
    /// Return the most relevant declaration to namespaceOrType,
    /// it will first search the context node contained within,
    /// then the declaration in the same file, then non auto-generated file,
    /// then all the potential location. Return null if no declaration.
    /// </summary>
    Task<SyntaxNode?> FindMostRelevantNameSpaceOrTypeDeclarationAsync(Solution solution, INamespaceOrTypeSymbol namespaceOrType, Location? location, CancellationToken cancellationToken);
}