use axum::extract;
use chartered_db::{
crates::Crate,
users::{User, UserCratePermissionValue as Permission},
ConnectionPool,
};
use chartered_fs::FileSystem;
use std::{str::FromStr, sync::Arc};
use thiserror::Error;
#[derive(Error, Debug)]
pub enum Error {
#[error("Failed to query database")]
Database(#[from] chartered_db::Error),
#[error("Failed to fetch crate file")]
File(#[from] std::io::Error),
#[error("The requested crate does not exist")]
NoCrate,
#[error("The requested version does not exist for the crate")]
NoVersion,
}
impl Error {
pub fn status_code(&self) -> axum::http::StatusCode {
use axum::http::StatusCode;
match self {
Self::Database(_) | Self::File(_) => StatusCode::INTERNAL_SERVER_ERROR,
Self::NoCrate | Self::NoVersion => StatusCode::NOT_FOUND,
}
}
}
define_error_response!(Error);
pub async fn handle(
extract::Path((_session_key, name, version)): extract::Path<(String, String, String)>,
extract::Extension(db): extract::Extension<ConnectionPool>,
extract::Extension(user): extract::Extension<Arc<User>>,
) -> Result<Vec<u8>, Error> {
let crate_ = Crate::find_by_name(db.clone(), name)
.await?
.ok_or(Error::NoCrate)
.map(std::sync::Arc::new)?;
ensure_has_crate_perm!(db, user, crate_, Permission::VISIBLE | -> Error::NoCrate);
let version = crate_.version(db, version).await?.ok_or(Error::NoVersion)?;
let file_ref = chartered_fs::FileReference::from_str(&version.filesystem_object).unwrap();
Ok(chartered_fs::Local.read(file_ref).await?)
}