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OsuPageObserver

Detects dynamic osu page changes

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/441010/1025088/OsuPageObserver.js 

class OsuWebObserver {
    constructor(staticFn, dynamicFn) {
        this.static = staticFn;
        this.dynamic = dynamicFn;
        this.static();
        const pageType = this.getType();
        if (pageType === "dynamic") {
            const firstLoad = new MutationObserver(() => {
                this.dynamic();
                firstLoad.disconnect();
            });
            const layout = document.querySelector(".osu-layout__section")?.firstElementChild;
            if (layout != null) {
                firstLoad.observe(layout, {childList: true});
            }
        }
        this.pageObserver = new MutationObserver(this.detectPageChange);
        this.pageObserver.observe(document.documentElement, {childList: true});
    }
    
    detectPageChange = (mutations) => {
        for (const mutation of mutations) {
            if (mutation.addedNodes.length > 0) {
                mutation.addedNodes.forEach(node => {
                    if (node.nodeName == "BODY") {
                        this.static();
                        this.dynamic();
                        return;
                    }
                });
            }
        }
    }

    getType = () => {
        const type = location.pathname.split("/")[1];
        const dynamic = ["users", "beatmapsets", "scores"];
        if (dynamic.includes(type)) {
            return "dynamic";
        }
        return "static";
    }

    destroy = () => {
        this.pageObserver.disconnect();
    }
}