use crate::{
    field::Field,
    queue::{Message, MsgType, Queue},
};
use std::{
    sync::mpsc::{channel, Receiver},
    thread::spawn,
};

const RESPONDS_TO: [MsgType; 1] = [MsgType::DocumentRequest];

struct Document {
    queue: Queue,
    rx: Receiver<Message>,
}

impl Document {
    fn new(queue: Queue, rx: Receiver<Message>) -> Self {
        Self {
            queue: queue,
            rx: rx,
        }
    }

    pub fn start(queue: Queue) {
        let (tx, rx) = channel();
        let mut document = Document::new(queue, rx);
        document.queue.add(tx, RESPONDS_TO.to_vec());
        spawn(move || {
            document.listen();
        });
    }

    fn listen(&mut self) {
        loop {
            let msg = self.rx.recv().unwrap();
        }
    }
}

#[cfg(test)]
mod documents {
    use super::*;

    #[test]
    fn start_service() {
        let queue = Queue::new();
        Document::start(queue);
    }
}