use either::{Either, Either::Left};
use serde::Deserialize;

#[derive(Deserialize, Clone, Debug)]
pub struct CommandConfig {
    /// The port(s) to listen on.
    ///
    /// If you are using Docker, don't change this, you'll need to map an
    /// external port to this.
    ///
    /// To listen on multiple ports, specify a vector e.g. [8080, 8448]
    ///
    /// default: 8008
    #[serde(default = "default_port")]
    pub port: ListeningPort,
}

#[derive(Deserialize, Clone, Debug)]
#[serde(transparent)]
pub struct ListeningPort {
    #[serde(with = "either::serde_untagged")]
    pub ports: Either<u16, Vec<u16>>,
}

fn default_port() -> ListeningPort {
    ListeningPort { ports: Left(8008) }
}