// 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.
 
namespace Microsoft.CodeAnalysis.Formatting;
 
internal readonly struct LineColumnRule(
LineColumnRule.SpaceOperations spaceOperation,
LineColumnRule.LineOperations lineOperation,
LineColumnRule.IndentationOperations indentationOperation,
    int lines,
    int spaces,
    int indentation)
{
    public readonly SpaceOperations SpaceOperation = spaceOperation;
    public readonly LineOperations LineOperation = lineOperation;
    public readonly IndentationOperations IndentationOperation = indentationOperation;
 
    public readonly int Lines = lines;
    public readonly int Spaces = spaces;
    public readonly int Indentation = indentation;
 
    public LineColumnRule With(int? lines = null, int? spaces = null, int? indentation = null, LineOperations? lineOperation = null, SpaceOperations? spaceOperation = null, IndentationOperations? indentationOperation = null)
        => new(
            spaceOperation == null ? SpaceOperation : spaceOperation.Value,
            lineOperation == null ? LineOperation : lineOperation.Value,
            indentationOperation == null ? IndentationOperation : indentationOperation.Value,
            lines == null ? Lines : lines.Value,
            spaces == null ? Spaces : spaces.Value,
            indentation == null ? Indentation : indentation.Value);
 
    public static readonly LineColumnRule Preserve =
        new(
            SpaceOperations.Preserve,
            LineOperations.Preserve,
            IndentationOperations.Preserve,
            lines: 0,
            spaces: 0,
            indentation: 0);
 
    public static LineColumnRule PreserveWithGivenSpaces(int spaces)
        => new(
            SpaceOperations.Preserve,
            LineOperations.Preserve,
            IndentationOperations.Given,
            lines: 0,
            spaces,
            indentation: 0);
 
    public static LineColumnRule PreserveLinesWithDefaultIndentation(int lines)
        => new(
            SpaceOperations.Preserve,
            LineOperations.Preserve,
            IndentationOperations.Default,
            lines,
            spaces: 0,
            indentation: -1);
 
    public static LineColumnRule PreserveLinesWithGivenIndentation(int lines)
        => new(
            SpaceOperations.Preserve,
            LineOperations.Preserve,
            IndentationOperations.Given,
            lines,
            spaces: 0,
            indentation: -1);
 
    public static LineColumnRule PreserveLinesWithAbsoluteIndentation(int lines, int indentation)
        => new(
            SpaceOperations.Preserve,
            LineOperations.Preserve,
            IndentationOperations.Absolute,
            lines,
            spaces: 0,
            indentation);
 
    public static readonly LineColumnRule PreserveLinesWithFollowingPrecedingIndentation =
        new(
            SpaceOperations.Preserve,
            LineOperations.Preserve,
            IndentationOperations.Follow,
            lines: -1,
            spaces: 0,
            indentation: -1);
 
    public static LineColumnRule ForceSpaces(int spaces)
        => new(
            SpaceOperations.Force,
            LineOperations.Preserve,
            IndentationOperations.Preserve,
            lines: 0,
            spaces,
            indentation: 0);
 
    public static LineColumnRule PreserveSpacesOrUseDefaultIndentation(int spaces)
        => new(
            SpaceOperations.Preserve,
            LineOperations.Preserve,
            IndentationOperations.Default,
            lines: 0,
            spaces,
            indentation: -1);
 
    public static LineColumnRule ForceSpacesOrUseDefaultIndentation(int spaces)
        => new(
            SpaceOperations.Force,
            LineOperations.Preserve,
            IndentationOperations.Default,
            lines: 0,
            spaces,
            indentation: -1);
 
    public static LineColumnRule ForceSpacesOrUseFollowIndentation(int indentation)
        => new(
            SpaceOperations.Force,
            LineOperations.Preserve,
            IndentationOperations.Follow,
            lines: 0,
            spaces: 1,
            indentation);
 
    public enum SpaceOperations
    {
        Preserve,
        Force
    }
 
    public enum LineOperations
    {
        Preserve,
        Force
    }
 
    public enum IndentationOperations
    {
        Absolute,
        Default,
        Given,
        Follow,
        Preserve
    }
}