wavekat-cli 0.0.1

// Tiny ANSI styling helpers. Self-contained so we don't drag in a colour
// crate just to dim a few labels. Output is automatically plain when
// stdout isn't a TTY (so piping into `jq` / files / other tools is
// untouched) and when the `NO_COLOR` env var is set per
// <https://no-color.org>. `CLICOLOR_FORCE=1` forces colour on, useful in
// CI where stdout is captured but you still want the codes.

use std::io::IsTerminal;
use std::sync::OnceLock;

fn enabled() -> bool {
    static ON: OnceLock<bool> = OnceLock::new();
    *ON.get_or_init(|| {
        if std::env::var_os("NO_COLOR").is_some() {
            return false;
        }
        if std::env::var("CLICOLOR_FORCE").is_ok_and(|v| v != "0") {
            return true;
        }
        std::io::stdout().is_terminal()
    })
}

fn wrap(code: &str, body: &str) -> String {
    if enabled() {
        format!("\x1b[{code}m{body}\x1b[0m")
    } else {
        body.to_string()
    }
}

pub fn bold(s: &str) -> String { wrap("1", s) }
pub fn dim(s: &str) -> String { wrap("2", s) }
pub fn red(s: &str) -> String { wrap("31", s) }
pub fn green(s: &str) -> String { wrap("32", s) }
pub fn yellow(s: &str) -> String { wrap("33", s) }
pub fn cyan(s: &str) -> String { wrap("36", s) }
pub fn magenta(s: &str) -> String { wrap("35", s) }

/// Colour a review status string. Unknown / unreviewed render dim.
pub fn review(status: Option<&str>) -> String {
    match status {
        Some("approved") => green("approved"),
        Some("rejected") => red("rejected"),
        Some("needs_fix") => yellow("needs_fix"),
        Some(other) => other.to_string(),
        None => dim("—"),
    }
}

/// Colour a user role string.
pub fn role(s: &str) -> String {
    match s {
        "root" => magenta("root"),
        "user" => green("user"),
        "none" => yellow("none"),
        _ => s.to_string(),
    }
}