namespace Mr.BrickAdventures.Progression;

/// <summary>
/// Stable identity of an Achievement, matching the authored <c>AchievementResource</c> id that Steam
/// also keys on.
/// </summary>
public readonly struct AchievementId : IEquatable<AchievementId>
{
    public string Value { get; }

    private AchievementId(string value) => Value = value;

    public static AchievementId Of(string value) => string.IsNullOrWhiteSpace(value)
        ? throw new ArgumentException("An achievement id cannot be blank.", nameof(value))
        : new AchievementId(value);

    public bool Equals(AchievementId other) => string.Equals(Value, other.Value, StringComparison.Ordinal);
    public override bool Equals(object? obj) => obj is AchievementId other && Equals(other);
    public override int GetHashCode() => StringComparer.Ordinal.GetHashCode(Value ?? string.Empty);
    public override string ToString() => Value;
}