use {super::*, fee_rate::FeeRate};

#[derive(Debug, Parser)]
pub(crate) struct Preview {
  #[command(flatten)]
  server: super::server::Server,
  inscriptions: Vec<PathBuf>,
}

struct KillOnDrop(process::Child);

impl Drop for KillOnDrop {
  fn drop(&mut self) {
    self.0.kill().unwrap()
  }
}

impl Preview {
  pub(crate) fn run(self) -> SubcommandResult {
    let tmpdir = TempDir::new()?;

    let rpc_port = TcpListener::bind("127.0.0.1:0")?.local_addr()?.port();

    let bitcoin_data_dir = tmpdir.path().join("bitcoin");

    fs::create_dir(&bitcoin_data_dir)?;

    let _bitcoind = KillOnDrop(
      Command::new("bitcoind")
        .arg({
          let mut arg = OsString::from("-datadir=");
          arg.push(&bitcoin_data_dir);
          arg
        })
        .arg("-regtest")
        .arg("-txindex")
        .arg("-listen=0")
        .arg(format!("-rpcport={rpc_port}"))
        .spawn()
        .context("failed to spawn `bitcoind`")?,
    );

    let options = Options {
      chain_argument: Chain::Regtest,