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use std::fmt;
use crate::{http, Extract, Result, VecMiddleware};
pub struct Context {
uri: http::Uri,
method: http::Method,
version: http::Version,
headers: http::HeaderMap,
extensions: http::Extensions,
body: Option<http::Body>,
middleware: VecMiddleware,
}
impl Context {
pub fn new(req: http::Request) -> Self {
req.into()
}
pub fn method(&self) -> &http::Method {
&self.method
}
pub fn version(&self) -> http::Version {
self.version
}
pub fn uri(&self) -> &http::Uri {
&self.uri
}
pub fn path(&self) -> &str {
self.uri.path()
}
pub fn query_str(&self) -> &str {
if let Some(query) = self.uri().query().as_ref() { query } else { "" }
}
pub fn host(&self) -> Option<&str> {
self.uri.host()
}
pub fn mime(&self) -> Option<mime::Mime> {
self.header(http::header::CONTENT_TYPE)
}
pub fn size(&self) -> Option<u64> {
self.header(http::header::CONTENT_LENGTH)
}
pub fn header_value(&self, key: impl AsRef<str>) -> Option<&http::HeaderValue> {
self.headers.get(key.as_ref())
}
pub fn header<T: std::str::FromStr>(&self, key: impl AsRef<str>) -> Option<T> {
self.header_value(key.as_ref())
.and_then(|v| v.to_str().ok())
.and_then(|v| v.parse::<T>().ok())
}
pub fn headers(&self) -> &http::HeaderMap {
&self.headers
}
pub fn extensions(&self) -> &http::Extensions {
&self.extensions
}
pub fn extensions_mut(&mut self) -> &mut http::Extensions {
&mut self.extensions
}
pub fn take_body(&mut self) -> Option<http::Body> {
self.body.take()
}
pub fn middleware(&self) -> &VecMiddleware {
&self.middleware
}
pub fn middleware_mut(&mut self) -> &mut VecMiddleware {
&mut self.middleware
}
pub async fn extract<T: Extract>(&mut self) -> Result<T, T::Error> {
T::extract(self).await
}
pub async fn next(&mut self) -> Result {
if let Some(m) = self.middleware.pop() {
return m.call(self).await;
}
Ok(http::StatusCode::NOT_FOUND.into())
}
}
impl From<http::Request> for Context {
fn from(req: http::Request) -> Self {
let (::http::request::Parts { uri, method, headers, version, extensions, .. }, body) =
req.into_parts();
Self { uri, method, headers, version, extensions, body: Some(body), middleware: Vec::new() }
}
}
impl fmt::Debug for Context {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt.debug_struct("Context")
.field("version", &self.version)
.field("method", &self.method)
.field("uri", &self.uri)
.field("headers", &self.headers)
.field("extensions", &self.extensions)
.field("body", &self.body.is_some())
.field("middleware", &self.middleware.len())
.finish()
}
}