use std::os::raw::c_char;

// helper macro for generating C-style strings from Rust string literals at compile time
macro_rules! c_str {
    ($lit:expr) => {
        unsafe {
            std::ffi::CStr::from_ptr(concat!($lit, "\0").as_ptr() as *const c_char)
        }
    }
}

extern "C" fn init(callbacks: *mut PluginCallbacks, config_path: *const c_char) -> c_int {
    janus_info!("Plugin loaded!");
    0
}

extern "C" fn destroy() {
    janus_info!("Plugin destroyed!");
}

// ...other handlers omitted: see
// https://janus.conf.meetecho.com/docs/plugin_8h.html#details

const PLUGIN: Plugin = build_plugin!(
    LibraryMetadata {
        // The Janus plugin API version. The version compiled into the plugin
        // must be identical to the version in the Janus which loads the plugin.
        api_version: 15,
        // Incrementing plugin version number for your own use.
        version: 1,
        // Human-readable metadata which Janus can query.
        name: c_str!("My plugin name"),
        package: c_str!("My plugin package name"),
        version_str: c_str!(env!("CARGO_PKG_VERSION")),
        description: c_str!(env!("CARGO_PKG_DESCRIPTION")),
        author: c_str!(env!("CARGO_PKG_AUTHORS")),
    },
    init,
    destroy,
    // ...other handlers omitted: see
    // https://janus.conf.meetecho.com/docs/plugin_8h.html#details
);

export_plugin!(&PLUGIN);