// 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/>.

#[cfg(test)]
mod tests {

	use super::super::service::*;
	use nanoipc;
	use std::sync::Arc;
	use std::io::{Write, Read};
	use std::sync::atomic::{Ordering, AtomicBool};

	fn dummy_write(addr: &str, buf: &[u8]) -> (::nanomsg::Socket, ::nanomsg::Endpoint) {
		let mut socket = ::nanomsg::Socket::new(::nanomsg::Protocol::Pair).unwrap();
		let endpoint = socket.connect(addr).unwrap();
		socket.write(buf).unwrap();
		(socket, endpoint)
	}


	fn init_worker(addr: &str) -> nanoipc::Worker<Service> {
		let mut worker = nanoipc::Worker::<Service>::new(&Arc::new(Service::new()));
		worker.add_duplex(addr).unwrap();
		worker
	}

	#[test]
	fn can_create_client() {
		let client = nanoipc::init_duplex_client::<ServiceClient<_>>("ipc:///tmp/parity-nano-test10.ipc");
		assert!(client.is_ok());
	}

	#[test]
	fn can_call_handshake() {
		let url = "ipc:///tmp/parity-test-nano-20.ipc";
		let worker_should_exit = Arc::new(AtomicBool::new(false));
		let worker_is_ready = Arc::new(AtomicBool::new(false));
		let c_worker_should_exit = worker_should_exit.clone();
		let c_worker_is_ready = worker_is_ready.clone();

		::std::thread::spawn(move || {
			let mut worker = init_worker(url);
    		while !c_worker_should_exit.load(Ordering::Relaxed) {
				worker.poll();
				c_worker_is_ready.store(true, Ordering::Relaxed);
			}
		});

		while !worker_is_ready.load(Ordering::Relaxed) { }
		let client = nanoipc::init_duplex_client::<ServiceClient<_>>(url).unwrap();

		let hs = client.handshake();

		worker_should_exit.store(true, Ordering::Relaxed);
		assert!(hs.is_ok());
	}

	#[test]
	fn can_receive_dummy_writes_in_thread() {
		let url = "ipc:///tmp/parity-test-nano-30.ipc";
		let worker_should_exit = Arc::new(AtomicBool::new(false));
		let worker_is_ready = Arc::new(AtomicBool::new(false));
		let c_worker_should_exit = worker_should_exit.clone();
		let c_worker_is_ready = worker_is_ready.clone();

		::std::thread::spawn(move || {
			let mut worker = init_worker(url);
    		while !c_worker_should_exit.load(Ordering::Relaxed) {
				worker.poll();
				c_worker_is_ready.store(true, Ordering::Relaxed);
			}
		});
		while !worker_is_ready.load(Ordering::Relaxed) { }

		let (mut _s, _e) = dummy_write(url, &vec![0, 0,
			// protocol version
			0, 0, 0, 0, 0, 0, 0, 5, b'1', b'.', b'0', b'.', b'0',
			// api version
			0, 0, 0, 0, 0, 0, 0, 5, b'1', b'.', b'0', b'.', b'0',
			// reserved
			0, 0, 0, 0, 0, 0, 0, 64,
				0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
				0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
				0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
				0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
			]);

		let mut buf = vec![0u8;1];
		_s.read(&mut buf).unwrap();
		assert_eq!(1, buf.len());
		assert_eq!(1, buf[0]);

		worker_should_exit.store(true, Ordering::Relaxed);
	}
}