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pub mod settings;
use actix_web::http::{header, HeaderMap, StatusCode};
use actix_web::web;
use actix_web::{HttpRequest, HttpResponse};
use futures::{FutureExt, TryFutureExt};
use rabbithole::entity::SingleEntity;
use crate::settings::{ActixSettingsModel, JsonApiSettings};
use actix_web::dev::HttpResponseBuilder;
use rabbithole::model::error;
use rabbithole::model::version::JsonApiVersion;
use rabbithole::operation::Fetching;
use rabbithole::rule::RuleDispatcher;
use rabbithole::JSON_API_HEADER;
use serde::export::TryFrom;
use rabbithole::query::Query;
use std::marker::PhantomData;
fn error_to_response(err: error::Error) -> HttpResponse {
new_json_api_resp(
err.status.as_deref().and_then(|s| s.parse().ok()).unwrap_or(StatusCode::BAD_REQUEST),
)
.json(err)
}
#[derive(Debug, Clone)]
pub struct ActixSettings<T>
where
T: 'static + Fetching,
{
pub path: String,
pub uri: url::Url,
pub jsonapi: JsonApiSettings,
_data: PhantomData<T>,
}
impl<T> TryFrom<ActixSettingsModel> for ActixSettings<T>
where
T: 'static + Fetching + Send + Sync,
T::Item: Send + Sync,
{
type Error = url::ParseError;
fn try_from(value: ActixSettingsModel) -> Result<Self, Self::Error> {
let ActixSettingsModel { host, port, path, jsonapi } = value;
let uri = format!("http://{}:{}", host, port).parse::<url::Url>().unwrap();
let uri = uri.join(&path).unwrap();
Ok(Self { path, uri, jsonapi, _data: PhantomData })
}
}
impl<T> ActixSettings<T>
where
T: 'static + Fetching + Send + Sync,
T::Item: Send + Sync,
{
pub fn fetch_collection(
self, req: HttpRequest,
) -> impl futures01::Future<Item = HttpResponse, Error = actix_web::Error> {
if let Err(err_resp) = check_header(&self.jsonapi.version, &req.headers()) {
return futures::future::ok(err_resp).boxed_local().compat();
}
match Query::from_uri(req.uri()) {
Ok(query) => {
let fut = async move {
let vec_res = T::fetch_collection(&query).await;
match vec_res {
Ok(vec) => {
match T::vec_to_document(
&vec,
&self.uri.to_string(),
&query,
&req.uri().into(),
)
.await
{
Ok(doc) => Ok(HttpResponse::Ok().json(doc)),
Err(err) => Ok(error_to_response(err)),
}
},
Err(err) => Ok(error_to_response(err)),
}
};
fut.boxed_local().compat()
},
Err(err) => futures::future::ok(error_to_response(err)).boxed_local().compat(),
}
}
pub fn fetch_single(
self, param: web::Path<String>, req: HttpRequest,
) -> impl futures01::Future<Item = HttpResponse, Error = actix_web::Error> {
if let Err(err_resp) = check_header(&self.jsonapi.version, &req.headers()) {
return futures::future::ok(err_resp).boxed_local().compat();
}
match Query::from_uri(req.uri()) {
Ok(query) => {
let fut = async move {
match T::fetch_single(¶m.into_inner(), &query).await {
Ok(item) => {
match item.to_document_automatically(
&self.uri.to_string(),
&query,
&req.uri().into(),
) {
Ok(doc) => Ok(new_json_api_resp(StatusCode::OK).json(doc)),
Err(err) => Ok(error_to_response(err)),
}
},
Err(err) => Ok(error_to_response(err)),
}
};
fut.boxed_local().compat()
},
Err(err) => futures::future::ok(error_to_response(err)).boxed_local().compat(),
}
}
pub fn fetch_relationship(
self, param: web::Path<(String, String)>, req: HttpRequest,
) -> impl futures01::Future<Item = HttpResponse, Error = actix_web::Error> {
if let Err(err_resp) = check_header(&self.jsonapi.version, &req.headers()) {
return futures::future::ok(err_resp).boxed_local().compat();
}
match Query::from_uri(req.uri()) {
Ok(query) => {
let (id, related_field) = param.into_inner();
let fut = async move {
match T::fetch_relationship(
&id,
&related_field,
&self.uri.to_string(),
&query,
&req.uri().into(),
)
.await
{
Ok(item) => Ok(new_json_api_resp(StatusCode::OK).json(item)),
Err(err) => Ok(error_to_response(err)),
}
};
fut.boxed_local().compat()
},
Err(err) => futures::future::ok(error_to_response(err)).boxed_local().compat(),
}
}
pub fn fetch_related(
self, param: web::Path<(String, String)>, req: HttpRequest,
) -> impl futures01::Future<Item = HttpResponse, Error = actix_web::Error> {
if let Err(err_resp) = check_header(&self.jsonapi.version, &req.headers()) {
return futures::future::ok(err_resp).boxed_local().compat();
}
match Query::from_uri(req.uri()) {
Ok(query) => {
let (id, related_field) = param.into_inner();
let fut = async move {
match T::fetch_related(
&id,
&related_field,
&self.uri.to_string(),
&query,
&req.uri().into(),
)
.await
{
Ok(item) => Ok(new_json_api_resp(StatusCode::OK).json(item)),
Err(err) => Ok(error_to_response(err)),
}
};
fut.boxed_local().compat()
},
Err(err) => futures::future::ok(error_to_response(err)).boxed_local().compat(),
}
}
}
fn check_header(api_version: &JsonApiVersion, headers: &HeaderMap) -> Result<(), HttpResponse> {
let content_type = headers.get(header::CONTENT_TYPE).map(|r| r.to_str().unwrap().to_string());
let accept = headers.get(header::ACCEPT).map(|r| r.to_str().unwrap().to_string());
RuleDispatcher::ContentTypeMustBeJsonApi(api_version, &content_type)
.map_err(error_to_response)?;
RuleDispatcher::AcceptHeaderShouldBeJsonApi(api_version, &accept).map_err(error_to_response)?;
Ok(())
}
fn new_json_api_resp(status_code: StatusCode) -> HttpResponseBuilder {
let mut resp = HttpResponse::build(status_code);
resp.set_header(header::CONTENT_TYPE, JSON_API_HEADER);
resp
}