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

// Same GResource embedding as ahfail-display: the sprites and the audio clip are
// compiled into the binary, and ahfail_ui::animation looks them up through the
// `ahfail_get_resource` symbol that glib-compile-resources generates.
fn main() {
    let manifest_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
    let workspace_root = manifest_dir.join("../..").canonicalize().unwrap();
    let assets_dir = workspace_root.join("assets");
    let gresource_xml = assets_dir.join("ahfail.gresource.xml");
    let out_dir = PathBuf::from(std::env::var("OUT_DIR").unwrap());
    let c_src = out_dir.join("ahfail-resources.c");

    println!("cargo:rerun-if-changed={}", gresource_xml.display());
    for entry in std::fs::read_dir(&assets_dir).unwrap() {
        println!("cargo:rerun-if-changed={}", entry.unwrap().path().display());
    }

    let status = Command::new("glib-compile-resources")
        .args([
            "--generate-source",
            "--target",
            c_src.to_str().unwrap(),
            "--sourcedir",
            assets_dir.to_str().unwrap(),
            gresource_xml.to_str().unwrap(),
        ])
        .status()
        .expect("glib-compile-resources not found");
    assert!(status.success(), "glib-compile-resources failed");

    let gio = pkg_config::probe_library("gio-2.0").expect("gio-2.0 not found");
    let mut build = cc::Build::new();
    build.file(&c_src).flag_if_supported("-w");
    for inc in &gio.include_paths {
        build.include(inc);
    }
    build.compile("ahfail_resources");

    let target_os = std::env::var("CARGO_CFG_TARGET_OS").unwrap_or_default();
    if target_os == "linux" {
        // The Wayland backend drives ext-session-lock-v1 through gtk-session-lock,
        // the same library gtklock uses. The X11 backend and PAM need libpam.
        pkg_config::probe_library("gtk-session-lock-0").expect(
            "gtk-session-lock not found (Arch: pacman -S gtk-session-lock)",
        );
        println!("cargo:rustc-link-lib=pam");
    }
}