namespace Nbt.Tag;

public interface INbtTag : IEquatable<INbtTag>
{
    NbtTagType Type { get; }

    INbtTag this[string tagName] { get => throw new NotSupportedException(); set => throw new NotSupportedException(); }

    INbtTag this[int tagIndex] { get => throw new NotSupportedException(); set => throw new NotSupportedException(); }

    INbtTag this[INbtPathElement tagPath] { get => throw new NotSupportedException(); set => throw new NotSupportedException(); }

    INbtTag this[INbtPath tagPath]
    {
        get
        {
            var count = tagPath.Count;

            if (count == 0)
            {
                return this;
            }

            var pathElt = tagPath.PopFirst(out var pathRest);
            var childTag = this[pathElt];

            return childTag[pathRest];
        }

        set
        {
            var count = tagPath.Count;

            if (count == 0)
            {
                throw new ArgumentException("Path cannot be empty", nameof(value));
            }

            var pathElt = tagPath.PopFirst(out var pathRest);

            if (count == 1)
            {
                this[pathElt] = value;
            }
            else
            {
                var childTag = this[pathElt];
                childTag[pathRest] = value;
            }
        }
    }

    INbtList AsList() => (INbtList)this;

    INbtCompound AsCompound() => (INbtCompound)this;

    INbtValue AsValue() => (INbtValue)this;

    INbtValue<T> AsValue<T>() where T : notnull => (INbtValue<T>)this;

    INbtArray AsArray() => (INbtArray)this;

    INbtArray<T> AsArray<T>() where T : notnull => (INbtArray<T>)this;

    T As<T>() where T : INbtTag => (T)this;

    INbtTag Copy();
}