use web_sys::console;

/// A macro to provide `println!(..)`-style syntax for `console.log` logging.
#[allow(unused_macros)]
#[macro_export]
macro_rules! log {
    ( $( $t:tt )* ) => {
        web_sys::console::log_1(&format!( $( $t )* ).into());
    }
}

#[allow(dead_code)]
pub fn set_panic_hook() {
    // When the `console_error_panic_hook` feature is enabled, we can call the
    // `set_panic_hook` function at least once during initialization, and then
    // we will get better error messages if our code ever panics.
    //
    // For more details see
    // https://github.com/rustwasm/console_error_panic_hook#readme
    #[cfg(feature = "console_error_panic_hook")]
    console_error_panic_hook::set_once();
}

pub struct Timer<'a> {
    name: &'a str,
}

impl<'a> Timer<'a> {
    #[allow(dead_code)]
    pub fn new(name: &'a str) -> Timer<'a> {
        console::time_with_label(name);
        Timer { name }
    }
}

impl<'a> Drop for Timer<'a> {
    fn drop(&mut self) {
        console::time_end_with_label(self.name);
    }
}
