From 1852f1b462657995157a1598a72346ff31fe2ca7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomasz=20Drwi=C4=99ga?= <tomasz@ethcore.io>
Date: Thu, 7 Apr 2016 18:22:53 +0200
Subject: [PATCH] REST-API PoC

---
 webapp/src/router/api.rs | 53 ++++++++++++++++++++++++++++++++++++++++
 webapp/src/router/mod.rs | 13 ++++++++--
 2 files changed, 64 insertions(+), 2 deletions(-)
 create mode 100644 webapp/src/router/api.rs

diff --git a/webapp/src/router/api.rs b/webapp/src/router/api.rs
new file mode 100644
index 000000000..1044af407
--- /dev/null
+++ b/webapp/src/router/api.rs
@@ -0,0 +1,53 @@
+// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Simple REST API
+
+use std::sync::Arc;
+use hyper;
+use hyper::status::StatusCode;
+use hyper::header;
+use hyper::uri::RequestUri::AbsolutePath as Path;
+use apps::Pages;
+
+pub struct RestApi {
+	pub pages: Arc<Pages>,
+}
+
+impl RestApi {
+	fn list_pages(&self) -> String {
+		let mut s = "[".to_owned();
+		for name in self.pages.keys() {
+			s.push_str(&format!("\"{}\",", name));
+		}
+		s.push_str("\"rpc\"");
+		s.push_str("]");
+		s
+	}
+}
+
+impl hyper::server::Handler for RestApi {
+	fn handle<'b, 'a>(&'a self, req: hyper::server::Request<'a, 'b>, mut res: hyper::server::Response<'a>) {
+		match req.uri {
+			Path(ref path) if path == "apps" => {
+				*res.status_mut() = StatusCode::Ok;
+				res.headers_mut().set(header::ContentType("application/json".parse().unwrap()));
+				let _ = res.send(self.list_pages().as_bytes());
+			},
+			_ => ()
+		}
+	}
+}
diff --git a/webapp/src/router/mod.rs b/webapp/src/router/mod.rs
index fad8593b9..f0399aba8 100644
--- a/webapp/src/router/mod.rs
+++ b/webapp/src/router/mod.rs
@@ -16,16 +16,20 @@
 
 //! Router implementation
 
+use std::sync::Arc;
 use hyper;
 use page::Page;
 use apps::Pages;
 use iron::request::Url;
 use jsonrpc_http_server::ServerHandler;
 
+mod api;
+
 pub struct Router {
 	rpc: ServerHandler,
+	api: api::RestApi,
 	main_page: Box<Page>,
-	pages: Pages,
+	pages: Arc<Pages>,
 }
 
 impl hyper::server::Handler for Router {
@@ -34,7 +38,10 @@ impl hyper::server::Handler for Router {
 		match path {
 			Some(ref url) if self.pages.contains_key(url) => {
 				self.pages.get(url).unwrap().handle(req, res);
-			}
+			},
+			Some(ref url) if url == "api" => {
+				self.api.handle(req, res);
+			},
 			_ if req.method == hyper::method::Method::Post => {
 				self.rpc.handle(req, res)
 			},
@@ -45,8 +52,10 @@ impl hyper::server::Handler for Router {
 
 impl Router {
 	pub fn new(rpc: ServerHandler, main_page: Box<Page>, pages: Pages) -> Self {
+		let pages = Arc::new(pages);
 		Router {
 			rpc: rpc,
+			api: api::RestApi { pages: pages.clone() },
 			main_page: main_page,
 			pages: pages,
 		}