use std::{
collections::HashMap,
error::Error,
io::{Read, Write},
};
#[cfg(feature = "async")]
use tokio::io::{AsyncReadExt, AsyncWriteExt};
#[derive(Clone, Debug)]
pub struct Response {
pub headers: HashMap<String, String>,
pub status_line: String,
pub body: Option<Vec<u8>>,
pub mime: Option<String>,
pub http2: bool,
}
impl Default for Response {
fn default() -> Self {
Self::new()
}
}
impl<'a> From<&'a str> for Response {
fn from(value: &'a str) -> Self {
Response::new()
.body(value.into())
.mime("text/plain")
.status_line("HTTP/1.1 200 OK")
}
}
impl From<String> for Response {
fn from(value: String) -> Self {
Response::new()
.body(value.into_bytes())
.mime("text/plain")
.status_line("HTTP/1.1 200 OK")
}
}
impl From<Vec<u8>> for Response {
fn from(value: Vec<u8>) -> Self {
Response::new()
.body(value)
.mime("application/octet-stream")
.status_line("HTTP/1.1 200 OK")
}
}
impl From<()> for Response {
fn from(_value: ()) -> Self {
Response::new()
.body(vec![])
.mime("text/plain")
.status_line("HTTP/1.1 403 Forbidden")
}
}
impl<T: Into<Response>, E: Error + Into<Response>> From<Result<T, E>> for Response {
fn from(value: Result<T, E>) -> Self {
match value {
Ok(body) => body.into(),
Err(e) => e.into(),
}
}
}
impl From<Box<dyn Error>> for Response {
fn from(value: Box<dyn Error>) -> Self {
Response::new()
.body(value.to_string().into_bytes())
.mime("text/plain")
.status_line("HTTP/1.1 403 Forbidden")
}
}
impl Response {
pub fn new() -> Response {
Response {
headers: HashMap::new(),
status_line: String::new(),
body: None,
mime: Some(String::from("HTTP/1.1 200 OK")),
http2: false,
}
}
pub fn headers(mut self, headers: HashMap<String, String>) -> Self {
self.headers = headers;
self
}
pub fn status_line<P: Into<String>>(mut self, line: P) -> Self {
let line_str = line.into();
self.status_line = line_str.trim().to_string() + "\r\n";
self
}
pub fn body(mut self, body: Vec<u8>) -> Self {
self.body = Some(body);
self
}
pub fn mime<P>(mut self, mime: P) -> Self
where
P: Into<String>,
{
self.mime = Some(mime.into());
self
}
#[cfg(not(feature = "async"))]
pub(crate) fn send<P: Read + Write>(&self, sock: &mut P) {
let line_bytes = self.status_line.as_bytes();
#[cfg(feature = "log")]
log::trace!("res status line: {:#?}", self.status_line);
let mut header_bytes: Vec<u8> = self
.headers
.iter()
.flat_map(|(i, j)| [i.as_bytes(), j.as_bytes()].concat())
.collect();
header_bytes.extend(b"\r\n");
#[cfg(all(feature = "log", debug_assertions))]
{
log::trace!(
"HEADER AS STR: {}",
String::from_utf8(header_bytes.clone()).unwrap()
);
log::trace!(
"STATUS LINE AS STR: {}",
std::str::from_utf8(line_bytes).unwrap()
);
};
let full_req: &[u8] = &[
line_bytes,
header_bytes.as_slice(),
self.body.as_ref().unwrap(),
]
.concat();
#[cfg(feature = "log")]
log::trace!("size of response: {}", full_req.len());
sock.write_all(full_req).unwrap();
}
#[cfg(feature = "async")]
pub(crate) async fn send<P: AsyncReadExt + AsyncWriteExt + Unpin>(&self, sock: &mut P) {
let line_bytes = self.status_line.as_bytes();
#[cfg(feature = "log")]
log::trace!("res status line: {:#?}", self.status_line);
let mut header_bytes: Vec<u8> = self
.headers
.iter()
.flat_map(|s| [s.0.as_bytes(), s.1.as_bytes()].concat())
.collect();
header_bytes.extend(b"\r\n");
#[cfg(all(feature = "log", debug_assertions))]
{
log::trace!(
"HEADER AS STR: {}",
String::from_utf8(header_bytes.clone()).unwrap()
);
log::trace!(
"STATUS LINE AS STR: {}",
std::str::from_utf8(line_bytes).unwrap()
);
};
let full_req: &[u8] = &[
line_bytes,
header_bytes.as_slice(),
self.body.as_ref().unwrap(),
]
.concat();
sock.write_all(full_req).await.unwrap();
}
}