/// Reads openfut.cfg from the same directory as this DLL.
///
/// The file contains a single line: the IP the hook should redirect EA
/// hostnames to, e.g. "192.168.1.10" or "127.0.0.1".
/// Falls back to 127.0.0.1 if the file is missing or unreadable.
use windows_sys::Win32::System::LibraryLoader::GetModuleFileNameA;

pub fn read_redirect_ip(module: windows_sys::Win32::Foundation::HMODULE) -> String {
    if let Some(cfg_path) = config_path(module) {
        if let Ok(content) = std::fs::read_to_string(&cfg_path) {
            let ip = content.trim().to_string();
            if !ip.is_empty() {
                return ip;
            }
        }
    }
    "127.0.0.1".to_string()
}

fn config_path(module: windows_sys::Win32::Foundation::HMODULE) -> Option<std::path::PathBuf> {
    let mut buf = vec![0u8; 512];
    let len = unsafe { GetModuleFileNameA(module, buf.as_mut_ptr(), buf.len() as u32) };
    if len == 0 {
        return None;
    }
    let path = std::ffi::CStr::from_bytes_until_nul(&buf[..len as usize + 1])
        .ok()?
        .to_str()
        .ok()?;
    let dll_path = std::path::Path::new(path);
    Some(dll_path.parent()?.join("openfut.cfg"))
}