//! Command-line configuration shared by all examples.
//! This is also an executable demo. It prints the received configuration to stdout.

use std::io;

use clap::Parser;
use tonic::transport::ClientTlsConfig;

use stargate_grpc::client::default_tls_config;
use stargate_grpc::AuthToken;

#[derive(Parser, Debug)]
#[clap(name = "Stargate Rust gRPC client demo program")]
pub struct Config {
    /// Keyspace name to use; on Astra it must match the keyspace of the database
    #[clap(short('k'), long, default_value = "stargate_examples")]
    pub keyspace: String,

    /// Authentication token.
    #[clap(short('t'), long, env("SG_TOKEN"), parse(try_from_str))]
    pub token: AuthToken,

    /// Enable TLS.
    #[clap(long)]
    pub tls: bool,

    /// Stargate coordinator URL
    #[clap(default_value = "http://127.0.0.2:8090")]
    pub url: String,
}

impl Config {
    pub fn from_args() -> Config {
        Config::parse()
    }

    pub fn tls_config(&self) -> io::Result<Option<ClientTlsConfig>> {
        if self.tls {
            Ok(Some(default_tls_config()?))
        } else {
            Ok(None)
        }
    }
}

#[allow(unused)]
fn main() {
    println!("{:?}", Config::from_args());
}