use config::Config;
use serde::Deserialize;


#[derive(Deserialize,Debug)]
pub enum DacFamily {
    Helios,
    Etherdream
    }

#[derive(Deserialize,Debug)]
pub struct Conf{
    laser_id : u8,
    debug : bool,
    redis_url : String,
    dac_family: DacFamily,
    dac_id : Option<u8>,
    dac_url : Option<String>
}


pub fn load_config( path : &str )-> Result<Conf, Box<dyn std::error::Error>> { 
    
    let conf_builder = Config::builder()
        .add_source(config::File::with_name(path));
        
        
    let settings = match conf_builder.build() {
	   Ok(conf) => conf,
	   Err(err) => {
	       println!("Invalid configuration file / missing file: {:?}", err);
	       return Err(Box::new(err))
	   }
	};
            
    let conf = settings
            .try_deserialize::<Conf>()?;
            // .try_deserialize::<HashMap<String, String>>()?;
            
    println!(
        "{:?}",
        conf
    );
    
    Ok(conf)
}