using System;
using System.Collections.Generic;

namespace ProjectI.Builds
{
    public sealed class AbilityUnlockState
    {
        private readonly HashSet<int> unlocked;

        public AbilityUnlockState(IEnumerable<int> ids)
        {
            if (ids == null) throw new ArgumentNullException(nameof(ids));
            unlocked = new HashSet<int>();
            foreach (int id in ids) Unlock(id);
        }

        public bool IsUnlocked(int id) => unlocked.Contains(id);

        public void Unlock(int id)
        {
            if (id <= 0) throw new ArgumentOutOfRangeException(nameof(id));
            unlocked.Add(id);
        }
    }
}