mod workers;

use futures::StreamExt;
use postcard::{from_bytes, to_stdvec};
use types::jobs::JobResponse;
use which::which;
use yt_dlp::{Downloader, client::Libraries};

#[tokio::main]
async fn main() {
    let nats_client = async_nats::connect("nats://localhost:4222")
        .await
        .expect("Error creating nats client");

    let mut subscriber = nats_client
        .queue_subscribe("corro-dj.*", "group1".to_string())
        .await
        .unwrap();

    let libraries = Libraries::new(which("yt-dlp").unwrap(), which("ffmpeg").unwrap());

    let downloader = Downloader::builder(libraries, "output")
        .build()
        .await
        .unwrap();

    // Receive and process messages
    while let Some(message) = subscriber.next().await {
        println!("Received message {:?}", message);

        let subject = message.subject.split(".").collect::<Vec<&str>>()[1];

        let result = match subject {
            "download" => {
                workers::download::download(&downloader, from_bytes(&message.payload).unwrap())
                    .await
            }
            _ => {
                println!("{subject}");
                continue;
            }
        };

        let response = match result {
            Ok(response) => response,
            Err(err) => JobResponse {
                content: None,
                error: Some(format!("{err}")),
            },
        };

        if let Some(reply) = message.reply {
            nats_client
                .publish(reply, to_stdvec(&response).unwrap().into())
                .await
                .unwrap();
        }
    }
}