nix-configs/programs/bar-ws-monitor/src/main.rs

use core::panic;

use serde::Serialize;
use swayipc::{Connection, Event, EventType, Fallible, Workspace, WorkspaceChange};

fn main() -> Fallible<()> {
    let mut con = Connection::new()?;
    let mut workspaces: Vec<WsData> = con
        .get_workspaces()?
        .into_iter()
        .map(|ws| ws.into())
        .collect();
    println!("{}", serde_json::ser::to_string(&workspaces).unwrap());

    for ev in con.subscribe([EventType::Workspace])? {
        // the lazy/ugly solution!
        // we create a new connection and request workspaces again and again and again
        // TODO: properly handle events one by one
        let mut con = Connection::new()?;
        workspaces = con
            .get_workspaces()?
            .into_iter()
            .map(|ws| ws.into())
            .collect();
        println!("{}", serde_json::ser::to_string(&workspaces).unwrap());
    }

    Ok(())
}

#[derive(Debug, Serialize)]
struct WsData {
    name: String,
    focused: bool,
    urgent: bool,
}

impl From<Workspace> for WsData {
    fn from(
        Workspace {
            name,
            focused,
            urgent,
            ..
        }: Workspace,
    ) -> Self {
        WsData {
            name,
            focused,
            urgent,
        }
    }
}