// Swap changed assets in place. Injected into every page by debug builds only.
// see `assets::reload_script`.
new EventSource("/assets/_reload").onmessage = (event) => {
    const bust = (url) => {
        const parsed = new URL(url, location.href);
        parsed.searchParams.set("v", Date.now());
        return parsed.href;
    };
    const stylesheets = () => {
        for (const link of document.querySelectorAll('link[rel="stylesheet"]')) {
            link.href = bust(link.href);
        }
    };

    const path = event.data;
    if (path.endsWith(".css")) {
        stylesheets();
    } else if (/\.(png|jpe?g|gif|svg|webp|avif|ico)$/i.test(path)) {
        for (const img of document.querySelectorAll("img")) {
            img.src = bust(img.src);
        }
        // Stylesheets may reference the image, and those URLs don't change.
        stylesheets();
    } else {
        // Scripts and anything unrecognized can't be swapped safely.
        location.reload();
    }
};