Campaign_Tracker/Campaign_Tracker.Server/ExtensionData/LegacyLinkValidationResult.cs

namespace Campaign_Tracker.Server.ExtensionData;

/// <summary>
/// Outcome of a pre-save legacy link validation (AC #3).
/// On failure, <see cref="Error"/> contains a descriptive message identifying the invalid reference.
/// </summary>
public sealed record LegacyLinkValidationResult(bool IsValid, string? Error = null)
{
    public static LegacyLinkValidationResult Success() => new(true);

    public static LegacyLinkValidationResult Failure(string error)
    {
        ArgumentException.ThrowIfNullOrWhiteSpace(error);
        return new(false, error);
    }
}