namespace UniVerse.Domain.Services;

public static class EnrollmentSlotPolicy
{
    private static readonly IReadOnlyList<EnrollmentSlotRule> SlotRules =
    [
        new(1, 3),
        new(3, 5),
        new(4, 7)
    ];

    public static IReadOnlyList<EnrollmentSlotRule> Rules => SlotRules;

    public static int GetLimitForLevel(int level) =>
        SlotRules
            .Where(rule => rule.Level <= level)
            .OrderBy(rule => rule.Level)
            .LastOrDefault()?.Slots ?? SlotRules[0].Slots;
}

public sealed record EnrollmentSlotRule(int Level, int Slots);