namespace ProjectAirplaneWithRadar.CollectionGenericObjects
{
    /// <summary>
    /// Класс-хранилище коллекций
    /// </summary>
    /// <typeparam name="T"></typeparam>
    public class StorageCollection<T>
        where T : class
    {
        /// <summary>
        /// Словарь (хранилище) с коллекциями
        /// </summary>
        readonly Dictionary<string, ICollectionGenericObjects<T>> _storages;

        /// <summary>
        /// Возвращение списка названий коллекций
        /// </summary>
        public List<string> Keys => _storages.Keys.ToList();

        /// <summary>
        /// Конструктор
        /// </summary>
        public StorageCollection()
        {
            _storages = new Dictionary<string, ICollectionGenericObjects<T>>();
        }

        /// <summary>
        /// Добавление коллекции в хранилище
        /// </summary>
        /// <param name="name">Название коллекции</param>
        /// <param name="collectionType">тип коллекции</param>
        public void AddCollection(string name, CollectionType collectionType)
        {
            if (name == null || _storages.ContainsKey(name))
                return;

            switch (collectionType)
            {
                case CollectionType.None:
                    return;
                case CollectionType.Massive:
                    _storages[name] = new MassiveGenericObjects<T>();
                    return;
                case CollectionType.List:
                    _storages[name] = new ListGenericObjects<T>();
                    return;
            }
        }

        /// <summary>
        /// Удаление коллекции
        /// </summary>
        /// <param name="name">Название коллекции</param>
        public void DelCollection(string name)
        {
            if(_storages.ContainsKey(name))
                _storages.Remove(name);
        }

        /// <summary>
        /// Доступ к коллекции
        /// </summary>
        /// <param name="name">Название коллекции</param>
        /// <returns></returns>
        public ICollectionGenericObjects<T>? this[string name]
        {
            get
            {
                if (name == null || !_storages.ContainsKey(name))
                    return null;

                return _storages[name];
            }
        }
    }
}