cellos-ctl 0.5.0

cellctl — kubectl-style CLI for CellOS execution cells and formations. Thin HTTP client over cellos-server with apply/get/describe/logs/events/webui.
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//! `cellctl delete formation <name>` — DELETE /v1/formations/<name>.

use std::io::{self, BufRead, Write};

use crate::client::CellosClient;
use crate::exit::{CtlError, CtlResult};

pub async fn formation(client: &CellosClient, name: &str, assume_yes: bool) -> CtlResult<()> {
    if !assume_yes {
        let confirmed = confirm(&format!("Delete formation '{name}'? This is irreversible."))?;
        if !confirmed {
            return Err(CtlError::usage("delete cancelled by user"));
        }
    }
    client
        .delete(&format!("/v1/formations/{}", urlencode(name)))
        .await?;
    println!("formation/{name} deleted");
    Ok(())
}

fn confirm(prompt: &str) -> CtlResult<bool> {
    eprint!("{prompt} [y/N] ");
    io::stderr().flush().ok();
    let mut line = String::new();
    io::stdin().lock().read_line(&mut line)?;
    let trimmed = line.trim().to_ascii_lowercase();
    Ok(matches!(trimmed.as_str(), "y" | "yes"))
}

fn urlencode(s: &str) -> String {
    url::form_urlencoded::byte_serialize(s.as_bytes()).collect()
}