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use crate::{imp, Body, Error, HeaderName, HeaderValue, Response};
use serde::Serialize;
use std::{convert::TryInto, fmt::Debug};
/// Builds a HTTP request, poll it to query
/// ```
/// # use generic_async_http_client::{Request, Response, Error};
/// # async fn get() -> Result<(), Error> {
/// let req = Request::get("http://example.com/");
/// let resp = req.exec().await?;
/// # Ok(())
/// # }
/// ```
///
/// Depending on the chosen implementation, `Request` implements `TryFrom<(TryInto<Method>, TryInto<Url>)>`.
pub struct Request(pub(crate) imp::Req);
impl Request {
//auth
//proxy - should be set by bin
//cookies
//timeout
//tls validation
//tls client certa
//session (ref + cookies)
pub fn get(uri: &str) -> Request {
Request(imp::Req::get(uri))
}
pub fn post(uri: &str) -> Request {
Request(imp::Req::post(uri))
}
pub fn put(uri: &str) -> Request {
Request(imp::Req::put(uri))
}
pub fn delete(uri: &str) -> Request {
Request(imp::Req::delete(uri))
}
pub fn head(uri: &str) -> Request {
Request(imp::Req::head(uri))
}
pub fn options(uri: &str) -> Request {
Request(imp::Req::options(uri))
}
pub fn new(meth: &str, uri: &str) -> Result<Request, Error> {
Ok(imp::Req::new(meth, uri).map(Request)?)
}
/// Add a JSON body to the request
/// ```
/// # use generic_async_http_client::{Request, Response, Error};
/// # use serde::Serialize;
/// #[derive(Serialize)]
/// struct JoseBody {
/// protected: String,
/// payload: String,
/// signature: String,
/// }
/// async fn jose(jose: &JoseBody) -> Result<Response, Error> {
/// let req = Request::put("http://example.com/").json(jose)?;
/// req.exec().await
/// }
/// ```
pub fn json<T: Serialize + ?Sized>(mut self, json: &T) -> Result<Self, Error> {
self.0.json(json)?;
Ok(self)
}
/// Add a form data body to the request
/// ```
/// # use generic_async_http_client::{Request, Response, Error};
/// # use serde::Serialize;
/// #[derive(Serialize)]
/// struct ContactForm {
/// email: String,
/// text: String,
/// }
/// async fn post_form(form: &ContactForm) -> Result<Response, Error> {
/// let req = Request::post("http://example.com/").form(form)?;
/// req.exec().await
/// }
/// ```
pub fn form<T: Serialize + ?Sized>(mut self, form: &T) -> Result<Self, Error> {
self.0.form(form)?;
Ok(self)
}
/// Add query parameter to the request
pub fn query<T: Serialize + ?Sized>(mut self, query: &T) -> Result<Self, Error> {
self.0.query(query)?;
Ok(self)
}
/// Add a body to the request
/// ```
/// # use generic_async_http_client::{Request, Response, Error};
/// # async fn body() -> Result<Response, Error> {
/// let req = Request::post("http://example.com/").body("some body")?;
/// # req.exec().await
/// # }
/// ```
pub fn body(mut self, body: impl Into<Body>) -> Result<Self, Error> {
self.0.body(body.into())?;
Ok(self)
}
/// Add a single header to the request
/// If the map did have this key present, the new value is associated with the key
/// ```
/// # use generic_async_http_client::{Request, Response, Error};
/// # async fn ua() -> Result<Response, Error> {
/// let req = Request::get("http://example.com/").set_header("User-Agent", "generic_async_http_client v0.2")?;
/// # req.exec().await
/// # }
/// ```
pub fn set_header<N, V, E1, E2>(mut self, name: N, value: V) -> Result<Self, Error>
where
N: TryInto<HeaderName, Error = E1>,
V: TryInto<HeaderValue, Error = E2>,
Error: From<E1>,
Error: From<E2>,
{
let val: HeaderValue = value.try_into()?;
let name: HeaderName = name.try_into()?;
self.0.set_header(name.into(), val.into())?;
Ok(self)
}
/// Add a single header to the request
/// If the map did have this key present, the new value is pushed to the end of the list of values
pub fn add_header<N, V, E1, E2>(mut self, name: N, value: V) -> Result<Self, Error>
where
N: TryInto<HeaderName, Error = E1>,
V: TryInto<HeaderValue, Error = E2>,
Error: From<E1>,
Error: From<E2>,
{
let val: HeaderValue = value.try_into()?;
let name: HeaderName = name.try_into()?;
self.0.add_header(name.into(), val.into())?;
Ok(self)
}
/*
TODO stream body
body(Body::from_reader)
*/
//TODO multipart
/// Send the request to the webserver
pub async fn exec(self) -> Result<Response, Error> {
#[cfg(all(feature = "mock_tests", test))]
let r = if crate::Mock::uses_mock() {
Response(crate::Mock::check(self.0)?)
} else {
self.0.send_request().await?
};
#[cfg(not(all(feature = "mock_tests", test)))]
let r = self.0.send_request().await?;
//https://crates.io/crates/hreq
match r.status_code() {
100..300 => Ok(r),
300..400 => {
if let Some(loc) = r.header("Location").and_then(|l| l.try_into().ok()) {
let _l: String = loc;
//TODO redirect
}
Ok(r)
}
s @ 400..500 => Err(Error::HTTPClientErr(s, r)),
//s @ 500..600 => Err(Error::HTTPServerErr(s, r)),
s => Err(Error::HTTPServerErr(s, r)),
}
}
}
impl Debug for Request {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
std::fmt::Debug::fmt(&self.0, f)
}
}
pub trait Requests: Debug {
fn get(uri: &str) -> Self;
fn post(uri: &str) -> Self;
fn put(uri: &str) -> Self;
fn delete(uri: &str) -> Self;
fn head(uri: &str) -> Self;
fn options(uri: &str) -> Self;
fn new(meth: &str, uri: &str) -> Result<Self, imp::Error>
where
Self: std::marker::Sized;
async fn send_request(self) -> Result<Response, imp::Error>
where
Self: std::marker::Sized;
fn json<T: Serialize + ?Sized>(&mut self, json: &T) -> Result<(), imp::Error>;
fn form<T: Serialize + ?Sized>(&mut self, data: &T) -> Result<(), imp::Error>;
fn query<T: Serialize + ?Sized>(&mut self, query: &T) -> Result<(), imp::Error>;
fn body<B: Into<imp::Body>>(&mut self, body: B) -> Result<(), imp::Error>;
fn set_header(
&mut self,
name: imp::HeaderName,
values: imp::HeaderValue,
) -> Result<(), imp::Error>;
fn add_header(
&mut self,
name: imp::HeaderName,
values: imp::HeaderValue,
) -> Result<(), imp::Error>;
}
/*
enum State{
Build(imp::Req),
Fetch(Pin<Box<dyn Future<Output=Result<imp::Resp, Error>>>>)
}
struct Request2{
state: std::cell::Cell<State>
}
impl Future for Request2{
type Output = Result<Response, Error>;
fn poll(self: Pin<&mut Self>, cx: &mut std::task::Context<'_>) -> Poll<Self::Output> {
println!("poll");
let pin = self.get_mut();
match pin.state.get_mut() {
State::Build(req) => {
let fut = req.send_request();
pin.state.set(State::Fetch(fut.boxed()));
Poll::Pending
},
State::Fetch(mut fut) => {
match fut.poll_unpin(cx) {
Poll::Ready(Ok(resp)) => Poll::Ready(Ok(Response(resp))),
Poll::Pending => Poll::Pending,
Poll::Ready(Err(e)) => Poll::Ready(Err(e))
}
},
}
}
}*/