fn main() {
    {
        use std::process::Command;
        use chrono::prelude::*;
        use std::fs::File;
        use std::io::Write;

        // Date of build
        let now = Utc::now().format("%Y%m%d%H%M%S");

        // Latest commit ID
        let git_sha = String::from_utf8(
            Command::new("git")
                .arg("rev-parse")
                .arg("--short")
                .arg("HEAD")
                .output()
                .expect("Failed to get git sha")
                .stdout
        ).expect("Read stdout from git sha command");

        // If the workspace is dirty or clean
        let clean = Command::new("git")
            .arg("diff")
            .arg("--quiet")
            .status()
            .expect("Failed to run git diff")
            .success();

        let mut file = File::create("VERSION").expect("Create VERSION file");

        if clean {
            write!(file, "0.0.0-{now}+{}", git_sha.trim()).expect("Write version to VERSION file");
        } else {
            write!(file, "0.0.0-{now}+{}-dirty", git_sha.trim()).expect("Write version to VERSION file");
        }
    }
}