1 files changed, 75 insertions, 0 deletions
diff --git a/src/handler/staticfile.rs b/src/handler/staticfile.rs
new file mode 100644
index 0000000..f208528
--- /dev/null
+++ b/src/handler/staticfile.rs
@@ -0,0 +1,75 @@
+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")),
+        }
+    }
+}