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use tungstenite::accept;
use std::net;
use super::*;
// Setup a new listener for websockets
// Iterate through them and create a new worker for each
pub fn websocket(db: Arc<Mutex<database::Database>>) {
let listen = std::net::TcpListener::bind("127.0.0.1:8001").unwrap();
loop {
for connection in listen.incoming() {
let wsconnectiondb = Arc::clone(&db);
std::thread::spawn(move || {
worker(wsconnectiondb, connection.unwrap())
});
}
}
}
// Accept the connection and send a message to the client
// if a new message has been recieved by the server
fn worker(db: Arc<Mutex<database::Database>>, connection: net::TcpStream) {
let mut websocket = accept(connection).unwrap();
let mut newest = 0;
// Main worker loop
loop {
// TX
// Get the newest message id
let mut db = db.lock().unwrap();
let local_newest = match db.get_message_newest_id() {
Some(n) => n.into(),
None => 0
};
drop(db);
// If there is a newer message then send a message to the client
// and update the newest message
if local_newest > newest {
let m = serde_json::to_string(&WebSocketMessage::NewMessage).unwrap();
// Close the client connection if we cannot send a message
match websocket.write_message(tungstenite::Message::text(m)) {
Ok(_) => (),
Err(_) => break,
};
newest = local_newest;
}
// Sleep for 100ms to prevent cpu usage
std::thread::sleep(std::time::Duration::from_millis(100));
// RX
// let _ = match websocket.read_message() {
// Ok(n) => n,
// Err(_) => {println!("closed"); break}
// };
// // If the message is binary and contains a two byte header
// // then convert that header into a function call
// // and the rest of the message into json
// if msg.is_binary() {
// if msg.len() > 1 {
// match msg.into_data()[0..=1].into() {
// BinaryMessage::GetMessageNewestId => {
// let db = wsconnectiondb.lock().unwrap();
// let m = db.get_message_newest_id();
// drop(db);
// let m = serde_json::to_string(&m).unwrap();
// websocket.write_message(tungstenite::Message::text(m)).unwrap();
// },
// // Return error of unsupported data
// _ => (),
// }
// // Return error of empty data
// } else {
// websocket.write_message(msg).unwrap();
// }
// // Otherwise if the message is text then print the text
// } else if msg.is_text() {
// println!("{}", msg.into_text().unwrap());
// }
}
}
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