'use strict';

const EVIL_DOMAINS = [
    "error-report.com",
    "html-load.com",
    "content-loader.com",
];
const isEvilUrl = (urlString) => {
    if (!urlString) return false;

    const url = (() => {
        try {
            return new URL(urlString);
        } catch {
            return false;
        }
    })();

    return EVIL_DOMAINS.some((evilDomain) => url.hostname.endsWith(evilDomain));
}

const originalRemove = Element.prototype.remove;
Element.prototype.remove = function() {
    if (!["STYLE", "LINK"].includes(this.tagName)) return originalRemove.bind(this);

    // NOP
}

const removeIfEvilIframe = (element) => {
    if (element.src && EVIL_DOMAINS.some((evilDomain) => element.src.includes(evilDomain))) {
        originalRemove.call(element);
    }
};
const observer = new MutationObserver((mutations) => {
    mutations.forEach(({ addedNodes }) => {
        addedNodes.forEach((node) => {
            if (node.nodeType !== Node.ELEMENT_NODE) return;


            if (node.tagName === "IFRAME") {
                removeIfEvilIframe(node);
            }

            if (node.hasChildNodes()) {
                const iframes = node.querySelectorAll("iframe");
                iframes.forEach(removeIfEvilIframe);
            }
        });
    });
});
observer.observe(document, {
    childList: true,
    subtree: true,
});

window.confirm = () => { throw null };
window.navigation.addEventListener("navigate", (event) => {
    if (isEvilUrl(event.destination.url)) {
        event.preventDefault();
    }
});