use std::env;
use std::path::PathBuf;
use std::process::Command;

fn main() {
    let out_dir = env::var_os("OUT_DIR")
        .map(|s| PathBuf::from(s).join("libhtp"))
        .unwrap();
    let build_dir = out_dir.join("build");
    let install_dir = out_dir.join("install");
    let libdir = install_dir.join("lib");

    if !build_dir.exists() {
        std::fs::create_dir_all(&out_dir).unwrap();
        Command::new("git")
            .arg("clone")
            .arg("https://github.com/OISF/libhtp.git")
            .arg("build")
            .current_dir(out_dir)
            .spawn()
            .expect("git failed")
            .wait()
            .unwrap();
    }

    if !libdir.join("libhtp.a").exists() {
        Command::new("./autogen.sh")
            .current_dir(&build_dir)
            .spawn()
            .expect("./autogen.sh failed")
            .wait()
            .expect("./autogen.sh failed");
        Command::new("./configure")
            .arg(&format!("--prefix={}", install_dir.display()))
            .arg("--disable-shared")
            .current_dir(&build_dir)
            .spawn()
            .expect("./configure failed")
            .wait()
            .expect("./configure failed");
        Command::new("make")
            .current_dir(&build_dir)
            .spawn()
            .expect("make failed")
            .wait()
            .expect("make failed");
        Command::new("make")
            .arg("install")
            .current_dir(&build_dir)
            .spawn()
            .expect("make failed")
            .wait()
            .expect("make failed");
    }
    println!("cargo:rustc-link-lib=static=htp");
    println!(
        "cargo:rustc-link-search=native={}",
        libdir.display()
    );
    println!("cargo:rustc-link-lib=z");
}