// VpnCloud - Peer-to-Peer VPN
// Copyright (C) 2015-2019  Dennis Schwerdel
// This software is licensed under GPL-3 or newer (see LICENSE.md)

extern crate cc;

use std::process::Command;
use std::env;
use std::path::Path;
use std::fs;

fn main() {
    let out_dir = env::var("OUT_DIR").unwrap();

    // Compile tun/tap C code
    println!("cargo:rerun-if-changed=src/c/tuntap.c");
    cc::Build::new().file("src/c/tuntap.c").include("src").compile("libtuntap.a");

    // Process manpage using ronn command
    println!("cargo:rerun-if-changed=vpncloud.md");
    fs::copy("vpncloud.md", Path::new(&out_dir).join("vpncloud.1.ronn")).unwrap();
    match Command::new("ronn").args(&["-r", "vpncloud.1.ronn"]).current_dir(&Path::new(&out_dir)).status() {
        Ok(_) => {
            Command::new("gzip").args(&["vpncloud.1"]).current_dir(&Path::new(&out_dir)).status().unwrap();
            fs::copy(Path::new(&out_dir).join("vpncloud.1.gz"), "target/vpncloud.1.gz").unwrap();
        }, 
        Err(err) => {
            println!("cargo:warning=Error building manpage: {}", err);
            println!("cargo:warning=The manpage will not be build. Do you have 'ronn'?");
        }
    }
}