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use crate::{
handler::{self, Handle},
request::{Method, Request},
response::{Body, Response, Status},
};
use std::{ffi::OsString, os::unix::ffi::OsStringExt, path::PathBuf};
use mlua::{FromLua, Value};
use tokio::{
fs::File,
io::{self},
};
#[derive(Debug, thiserror::Error)]
pub enum Error {
#[error("io error: {0}")]
Io(#[from] io::Error),
}
#[derive(Debug, Clone)]
pub struct StaticFile {
path: PathBuf,
mime: String,
}
impl Handle for StaticFile {
async fn handle(self, request: Request) -> Result<Response, handler::Error> {
match request.method() {
Method::Get | Method::Head => match File::open(&self.path).await {
Ok(file) => {
let metadata = file.metadata().await.map_err(Error::Io)?;
if metadata.is_file() {
Ok(Response::builder()
.status(Status::Ok)
.headers([
("content-length", format!("{}", metadata.len())),
("content-type", self.mime),
])
.body(match request.method() {
Method::Get => Body::File(file),
Method::Head => Body::Empty,
}))
} else {
Ok(Response::builder()
.status(Status::NotFound)
.headers([("content-length", "0")])
.body(Body::Empty))
}
}
Err(e) if matches!(e.kind(), io::ErrorKind::NotFound) => Ok(Response::builder()
.status(Status::NotFound)
.headers([("content-length", "0")])
.body(Body::Empty)),
Err(e) => Err(Error::Io(e))?,
},
}
}
}
impl FromLua for StaticFile {
fn from_lua(value: mlua::Value, _: &mlua::Lua) -> mlua::Result<Self> {
match value {
Value::Table(table) => Ok(Self {
path: PathBuf::from(OsString::from_vec(
table.get::<mlua::String>("path")?.as_bytes().to_vec(),
)),
mime: table.get::<String>("mime")?,
}),
_ => Err(mlua::Error::runtime("expected table")),
}
}
}
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