// 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;
using System.Collections.Generic;
using System.Threading;
using Microsoft.CodeAnalysis.Formatting;
using Microsoft.CodeAnalysis.Text;
 
namespace Microsoft.CodeAnalysis.CSharp.Formatting;
 
internal sealed partial class TriviaDataFactory
{
    private sealed class FormattedComplexTrivia : TriviaDataWithList
    {
        private readonly CSharpTriviaFormatter _formatter;
        private readonly IList<TextChange> _textChanges;
 
        public FormattedComplexTrivia(
            FormattingContext context,
            ChainedFormattingRules formattingRules,
            SyntaxToken token1,
            SyntaxToken token2,
            int lineBreaks,
            int spaces,
            string originalString,
            CancellationToken cancellationToken)
            : base(context.Options.LineFormatting)
        {
            Contract.ThrowIfNull(context);
            Contract.ThrowIfNull(formattingRules);
            Contract.ThrowIfNull(originalString);
 
            this.LineBreaks = Math.Max(0, lineBreaks);
            this.Spaces = Math.Max(0, spaces);
 
            _formatter = new CSharpTriviaFormatter(context, formattingRules, token1, token2, originalString, this.LineBreaks, this.Spaces);
            _textChanges = _formatter.FormatToTextChanges(cancellationToken);
        }
 
        public override bool TreatAsElastic
        {
            get { return false; }
        }
 
        public override bool IsWhitespaceOnlyTrivia
        {
            get { return false; }
        }
 
        public override bool ContainsChanges
        {
            get { return _textChanges.Count > 0; }
        }
 
        public override IEnumerable<TextChange> GetTextChanges(TextSpan span)
            => _textChanges;
 
        public override SyntaxTriviaList GetTriviaList(CancellationToken cancellationToken)
            => _formatter.FormatToSyntaxTrivia(cancellationToken);
 
        public override TriviaData WithSpace(int space, FormattingContext context, ChainedFormattingRules formattingRules)
            => throw new NotImplementedException();
 
        public override TriviaData WithLine(int line, int indentation, FormattingContext context, ChainedFormattingRules formattingRules, CancellationToken cancellationToken)
            => throw new NotImplementedException();
 
        public override TriviaData WithIndentation(int indentation, FormattingContext context, ChainedFormattingRules formattingRules, CancellationToken cancellationToken)
            => throw new NotImplementedException();
 
        public override void Format(FormattingContext context, ChainedFormattingRules formattingRules, Action<int, TokenStream, TriviaData> formattingResultApplier, CancellationToken cancellationToken, int tokenPairIndex = TokenPairIndexNotNeeded)
            => throw new NotImplementedException();
    }
}