namespace JdeScoping.ConfigManager.Services;

/// <summary>
/// Represents a line in a diff output.
/// </summary>
public class DiffLine
{
    public required int? OldLineNumber { get; init; }
    public required int? NewLineNumber { get; init; }
    public required string Text { get; init; }
    public required DiffLineType Type { get; init; }
}

public enum DiffLineType
{
    Unchanged,
    Added,
    Removed
}

/// <summary>
/// Result of a diff operation.
/// </summary>
public class DiffResult
{
    public bool HasChanges { get; init; }
    public List<DiffLine> Lines { get; init; } = [];
    public int Insertions { get; init; }
    public int Deletions { get; init; }
}

/// <summary>
/// Service for generating diffs between text content.
/// </summary>
public interface IDiffService
{
    DiffResult GenerateDiff(string original, string modified);
}