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use std::collections;
use typemap;
use queryst;
use super::{ApiHandler};
use framework::api;
use backend;
use errors;
use server::status;
use json::{JsonValue};
pub struct Application {
pub ext: typemap::TypeMap,
pub root_api: api::Api,
}
unsafe impl Send for Application {}
unsafe impl Sync for Application {}
impl Application {
pub fn new(root_api: api::Api) -> Application {
Application {
root_api: root_api,
ext: typemap::TypeMap::new()
}
}
fn call_internal<'a>(&self, req: &'a mut (backend::Request + 'a)) -> backend::HandleResult<backend::Response> {
let mut params = JsonValue::Object(collections::BTreeMap::new());
let parse_result = parse_request(req, &mut params);
parse_result.and_then(|_| {
self.root_api.api_call(&(req.url().path().join("/")), &mut params, req, &mut super::CallInfo::new(self))
})
}
pub fn call<'a>(&self, req: &'a mut (backend::Request + 'a)) -> backend::HandleResultStrict<backend::Response> {
self.call_internal(req)
.map_err(|error_response| {
if error_response.response.is_some() {
let errors::ErrorResponse{error, response} = error_response;
errors::StrictErrorResponse{
error: error,
response: response.unwrap()
}
} else {
let errors::ErrorResponse{error, ..} = error_response;
let response = if (&*error as &errors::Error).is::<errors::NotMatch>() {
backend::Response::new(
status::StatusCode::NotFound
)
} else if (&*error as &errors::Error).is::<errors::Validation>() {
backend::Response::new(
status::StatusCode::BadRequest
)
} else {
backend::Response::new(
status::StatusCode::InternalServerError
)
};
errors::StrictErrorResponse {
error: error,
response: response
}
}
})
}
}
impl super::super::Extensible for Application {
fn ext(&self) -> &::typemap::TypeMap { &self.ext }
fn ext_mut(&mut self) -> &mut ::typemap::TypeMap { &mut self.ext }
}
fn parse_query(query_str: &str, params: &mut JsonValue) -> backend::HandleSuccessResult {
let maybe_query_params = queryst::parse(query_str);
match maybe_query_params {
Ok(query_params) => {
let params = params.as_object_mut().expect("Params must be an object");
for (key, value) in query_params.as_object().expect("Query params must be an object").iter() {
if !params.contains_key(key) {
params.insert(key.to_string(), value.clone());
}
}
},
Err(_) => {
return Err(error_response!(errors::QueryString));
}
}
Ok(())
}
fn parse_json_body(req: &mut backend::Request, params: &mut JsonValue) -> backend::HandleSuccessResult {
let maybe_body = try!(req.read_to_end().map_err(|err| error_response_boxed!(err)))
.unwrap_or(String::new());
if maybe_body.len() > 0 {
let maybe_json_body = maybe_body.parse::<JsonValue>();
match maybe_json_body {
Ok(json_body) => {
let params = params.as_object_mut().expect("Params must be object");
if json_body.is_object() {
for (key, value) in json_body.as_object().unwrap().iter() {
if !params.contains_key(key) {
params.insert(key.to_string(), value.clone());
}
}
} else {
params.insert("body".to_string(), json_body);
}
},
Err(e) => return Err(error_response!(errors::Body::new(format!("Invalid JSON: {}", e))))
}
}
Ok(())
}
fn parse_urlencoded_body(req: &mut backend::Request, params: &mut JsonValue) -> backend::HandleSuccessResult {
let maybe_body = try!(req.read_to_end().map_err(|err| error_response_boxed!(err)))
.unwrap_or(String::new());
if maybe_body.len() > 0 {
let maybe_json_body = queryst::parse(&maybe_body);
match maybe_json_body {
Ok(json_body) => {
let params = params.as_object_mut().expect("Params must be object");
if json_body.is_object() {
for (key, value) in json_body.as_object().unwrap().iter() {
if !params.contains_key(key) {
params.insert(key.to_string(), value.clone());
}
}
} else {
params.insert("body".to_string(), json_body);
}
},
Err(_) => return Err(error_response!(errors::Body::new(format!("Invalid encoded data"))))
}
}
Ok(())
}
fn parse_request(req: &mut backend::Request, params: &mut JsonValue) -> backend::HandleSuccessResult {
if req.url().query().is_some() {
try!(parse_query(&req.url().query().as_ref().unwrap(), params));
}
if req.is_json_body() {
try!(parse_json_body(req, params));
} else if req.is_urlencoded_body() {
try!(parse_urlencoded_body(req, params));
}
Ok(())
}