use std::net::UdpSocket;

use crate::{
    config::Config,
    error::{WError, WResult},
};

pub struct Wolz {
    config: Config,
}

impl Wolz {
    pub fn create() -> WResult<Self> {
        let config = Config::create()?;
        Ok(Self { config })
    }

    pub fn wake_up(&self, mac_or_nick: &str) -> WResult<()> {
        let mac = self.config.get_mac(mac_or_nick)?;
        let mut magic_bytes = [0u8; 102];
        mac.copy_magic_bytes(&mut magic_bytes);

        let socket = UdpSocket::bind("0.0.0.0:0")
            .map_err(|e| WError::UdpSocketError(format!("couldn't bind to socket because {}", e)))?;
        socket.set_broadcast(true)
            .map_err(|e| WError::UdpSocketError(format!("couldn't set broadcast because {}", e)))?;
        socket
            .send_to(&magic_bytes, "255.255.255.255:9")
            .map_err(|e| WError::UdpSocketError(format!("couldn't send data because {}", e)))?;
        println!("Magic packet sent to 255.255.255.255:9 for Mac {:}", mac);
        Ok(())
    }
}