use dbus::blocking::Connection;
use dbus_crossroads::{Context, Crossroads};
use std::error::Error;

fn main() -> Result<(), Box<dyn Error>> {
    let service_name: &'static str = "com.jacobcasper.Mail";
    let conn = Connection::new_session()?;
    conn.request_name(service_name, false, true, false)?;

    let mut crossroads = Crossroads::new();

    let interface_token = crossroads.register(service_name, |builder| {
        builder.signal::<(u32,), _>("UnreadCount", ("count",));
        builder.method(
            "UnreadCount",
            ("count",),
            (),
            |ctx: &mut Context, _, (count,): (u32,)| {
                ctx.push_msg(ctx.make_signal("UnreadCount", (count,)));
                Ok(())
            },
        );
    });

    crossroads.insert("/com/jacobcasper/Mail/Unread", &[interface_token], ());
    crossroads.serve(&conn)?;
    unreachable!()
}