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use crate::{async_trait, OpenOptions, VfsError, VfsResult};
use futures_lite::{AsyncRead, AsyncSeek, AsyncWrite};
use std::{io::ErrorKind, pin::Pin};
pub trait VMetadata: Sync + Send {
fn path(&self) -> &str;
fn is_dir(&self) -> bool;
fn is_file(&self) -> bool;
fn len(&self) -> u64;
}
pub trait VFile: AsyncRead + AsyncWrite + AsyncSeek {}
impl<T> VFile for T where T: AsyncRead + AsyncWrite + AsyncSeek {}
#[async_trait]
pub trait Vfs: Sync + Send {
async fn exists(&self, path: &str) -> VfsResult<bool> {
match self.metadata(path).await {
Ok(_) => Ok(true),
Err(VfsError::IoError(err)) => match &err.kind() {
ErrorKind::NotFound => Ok(false),
_ => Err(VfsError::IoError(err)),
},
Err(e) => Err(e),
}
}
async fn ls(
&self,
path: &str,
skip_token: Option<String>,
) -> VfsResult<(Vec<Box<dyn VMetadata>>, Option<String>)>;
async fn metadata(&self, path: &str) -> VfsResult<Box<dyn VMetadata>>;
async fn mkdir(&self, path: &str) -> VfsResult<()>;
async fn mv(&self, from: &str, to: &str) -> VfsResult<()>;
async fn open(&self, path: &str, options: OpenOptions) -> VfsResult<Pin<Box<dyn VFile>>>;
async fn rm(&self, path: &str) -> VfsResult<()>;
}