using StellaOps.VersionComparison;
using System.Collections.Immutable;

namespace StellaOps.Concelier.Merge.Comparers;


/// <summary>
/// Result of a version comparison with explainability proof lines.
/// </summary>
/// <param name="Comparison">Negative if left &lt; right, zero if equal, positive if left &gt; right.</param>
/// <param name="ProofLines">Human-readable explanation of comparison steps.</param>
/// <param name="Comparator">The comparator type used.</param>
public sealed record VersionComparisonResult(
    int Comparison,
    ImmutableArray<string> ProofLines,
    ComparatorType Comparator)
{
    /// <summary>
    /// True if the left version is less than the right version.
    /// </summary>
    public bool IsLessThan => Comparison < 0;

    /// <summary>
    /// True if the left version equals the right version.
    /// </summary>
    public bool IsEqual => Comparison == 0;

    /// <summary>
    /// True if the left version is greater than the right version.
    /// </summary>
    public bool IsGreaterThan => Comparison > 0;

    /// <summary>
    /// True if the left version is greater than or equal to the right version.
    /// Useful for checking if installed >= fixed.
    /// </summary>
    public bool IsGreaterThanOrEqual => Comparison >= 0;
}