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

fn main() {
    // 1. Tauri билд
    tauri_build::build();

    // Все, что ниже — только для Windows
    if env::var("CARGO_CFG_TARGET_OS").unwrap() == "windows" {
        // --- 2. Работа с ресурсами (Манифест администратора) ---
        let mut res = winres::WindowsResource::new();
        res.set_manifest(
            r#"
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
    <security>
        <requestedPrivileges>
            <requestedExecutionLevel level="requireAdministrator" uiAccess="false" />
        </requestedPrivileges>
    </security>
</trustInfo>
</assembly>
"#,
        );

        if env::var("HOST").unwrap().contains("linux") {
            res.set_toolkit_path("/usr/bin");
            res.set_windres_path("/usr/bin/x86_64-w64-mingw32-windres");
        }

        if let Err(e) = res.compile() {
            println!("cargo:warning=Failed to compile Windows resources: {}", e);
        }

        // --- 3. Копирование Wintun DLL ---
        let target_arch = env::var("CARGO_CFG_TARGET_ARCH").expect("No target arch");

        let arch_folder = match target_arch.as_str() {
            "x86_64" => "amd64",
            "aarch64" => "arm64",
            "arm" => "arm",
            "x86" => "x86",
            _ => panic!("Unsupported architecture for Wintun: {}", target_arch),
        };

        let manifest_dir = env::var("CARGO_MANIFEST_DIR").expect("No manifest dir");
        let dll_source = Path::new(&manifest_dir)
            .join("bin")
            .join(arch_folder)
            .join("wintun.dll");

        let out_dir = env::var("OUT_DIR").expect("No out dir");
        let target_dir = Path::new(&out_dir)
            .parent()
            .and_then(|p| p.parent())
            .and_then(|p| p.parent())
            .and_then(|p| p.parent())
            .expect("Не удалось вычислить target");

        let dest_path = target_dir.join("wintun.dll");

        if dll_source.exists() {
            fs::copy(&dll_source, &dest_path).expect("Failed to copy wintun.dll");
            println!("cargo:warning=Wintun DLL copied to {:?}", dest_path);
        } else {
            println!("cargo:warning=Wintun DLL NOT FOUND at {:?}", dll_source);
        }

        println!("cargo:rerun-if-changed=bin/{}/wintun.dll", arch_folder);
    }

    println!("cargo:rerun-if-changed=build.rs");
}