use core::marker::PhantomData;

use alloc::boxed::Box;

use vfs::{Vnode, VnodeImpl, VnodeKind, VnodeRef};
use yggdrasil_abi::error::Error;

use crate::{block::BlockAllocator, bvec::BVec, file::FileNode};

pub(crate) struct DirectoryNode<A: BlockAllocator> {
    _pd: PhantomData<A>,
}

impl<A: BlockAllocator> VnodeImpl for DirectoryNode<A> {
    fn create(&mut self, _at: &VnodeRef, name: &str, kind: VnodeKind) -> Result<VnodeRef, Error> {
        let child = Vnode::new(name, kind);
        match kind {
            VnodeKind::Directory => child.set_data(Box::new(Self { _pd: PhantomData })),
            VnodeKind::Regular => child.set_data(Box::new(FileNode {
                data: BVec::<A>::new(),
            })),
            _ => todo!(),
        }
        Ok(child)
    }
}

impl<A: BlockAllocator> DirectoryNode<A> {
    pub fn new() -> Self {
        Self { _pd: PhantomData }
    }
}