use std::env;
use std::path::PathBuf;

fn main() {
    let target = env::var("TARGET").unwrap();
    let mut target_s = target.split('-');
    let (arch, vendor, sys, _abi) = (target_s.next().unwrap(), target_s.next().unwrap(),
                                     target_s.next().unwrap(), target_s.next().unwrap_or(""));
    let mut lib_dir = match env::var("CUBISM_CORE") {
        Ok(dir) => PathBuf::from(dir),
        Err(_) => panic!("The CUBISM_CORE environment variable hasn't been set!"),
    };
    lib_dir.push("lib");
    match vendor {
        "pc" => {//windows
            lib_dir.push(sys);
            if arch == "x86_64" {
                lib_dir.push("x86_64");
            } else {
                lib_dir.push("x86");
            }
        },
        "apple" => {
            lib_dir.push(
                match sys {
                    "ios" => sys,
                    _ => "macos",
                }
            );
        },
        _ => {
            match sys {
                "android" =>  lib_dir.push(
                    match arch {
                        "i686" => "x86",
                        "armv7" => "armeabi-v7a",
                        _ => "arm64-v8a",
                    }
                ),
                _ => lib_dir.push("linux/x86_64"),
            }
        }
    }
    println!("cargo:rustc-link-search=all={}", lib_dir.display());
    println!("cargo:rustc-link-lib=static=Live2DCubismCore");
}