use std::process::Command;

fn main() {

// Git short hash — so `octoscode --version` identifies the exact build

// (a branch/dev build reports e.g. `0.2.2-rc.7 (94e43fd …)`), mirroring the

// octos server. Without it, an unreleased branch build is indistinguishable

// from the published release of the same Cargo version.

let hash = Command::new("git")

.args(["rev-parse", "--short", "HEAD"])

.output()

.ok()

.filter(|o| o.status.success())

.map(|o| String::from_utf8_lossy(&o.stdout).trim().to_string())

.unwrap_or_default();

println!("cargo:rustc-env=OCTOSCODE_GIT_HASH={hash}");

// Build date (YYYY-MM-DD)

let date = Command::new("date")

.arg("+%Y-%m-%d")

.output()

.ok()

.filter(|o| o.status.success())

.map(|o| String::from_utf8_lossy(&o.stdout).trim().to_string())

.unwrap_or_default();

println!("cargo:rustc-env=OCTOSCODE_BUILD_DATE={date}");

// Re-run if git HEAD changes.

println!("cargo:rerun-if-changed=.git/HEAD");

println!("cargo:rerun-if-changed=.git/refs/heads/");

}