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use std::path::Path;
use std::time::Duration;
use rand::Rng;
const INITIAL_DELAY_MS: u64 = 200;
const BACKOFF_FACTOR: f64 = 2.0;
pub(crate) fn backoff(attempt: u64) -> Duration {
let exp = BACKOFF_FACTOR.powi(attempt.saturating_sub(1) as i32);
let base = (INITIAL_DELAY_MS as f64 * exp) as u64;
let jitter = rand::rng().random_range(0.9..1.1);
Duration::from_millis((base as f64 * jitter) as u64)
}
/// Return `true` if the project folder specified by the `Config` is inside a
/// Git repository.
///
/// The check walks up the directory hierarchy looking for a `.git` file or
/// directory (note `.git` can be a file that contains a `gitdir` entry). This
/// approach does **not** require the `git` binary or the `git2` crate and is
/// therefore fairly lightweight.
///
/// Note that this does **not** detect *work‑trees* created with
/// `git worktree add` where the checkout lives outside the main repository
/// directory. If you need Codex to work from such a checkout simply pass the
/// `--allow-no-git-exec` CLI flag that disables the repo requirement.
pub fn is_inside_git_repo(base_dir: &Path) -> bool {
let mut dir = base_dir.to_path_buf();
loop {
if dir.join(".git").exists() {
return true;
}
// Pop one component (go up one directory). `pop` returns false when
// we have reached the filesystem root.
if !dir.pop() {
break;
}
}
false
}