namespace DD.Persistence.Extensions;

/// <inheritdoc/>
public static class IEnumerableExtensions
{
    /// <inheritdoc/>
    public static void ForEach<T>(this IEnumerable<T> source, Action<T> action)
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (action == null)
            throw new ArgumentNullException(nameof(action));

        foreach (var item in source)
        {
            action(item);
        }
    }

    /// <inheritdoc/>
    public static bool IsNullOrEmpty<T>(this IEnumerable<T>? enumerable)
    {
        if (enumerable == null)
        {
            return true;
        }

        var collection = enumerable as ICollection<T>;
        if (collection != null)
        {
            return collection.Count < 1;
        }
        return !enumerable.Any();
    }
}