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Automatic Redirect on My Home Assistant Links to Local Instance

Automatically follows the link to your local instance. If you go back in history, it will not re-redirect again.

// ==UserScript==
// @name            Automatic Redirect on My Home Assistant Links to Local Instance
// @name:de         Automatische Umleitung bei My Home Assistant-Links zur lokalen Instanz
// @description     Automatically follows the link to your local instance. If you go back in history, it will not re-redirect again.
// @description:de  Folgt automatisch dem Link zur lokalen Instanz. Beim Zurückgehen in der Historie, erfolgt keine erneute Weiterleitung.
// @version         1.3.0
// @grant           none
// @match           https://my.home-assistant.io/redirect/*
// @exclude         https://my.home-assistant.io/redirect/_change/*
// @namespace       https://github.com/SVNKoch
// @author          SVNKoch
// @icon64URL       https://my.home-assistant.io/images/favicon.png
// @homepageURL     https://github.com/SVNKoch/my-home-assistant-automatic-link-redirect-userscript
// @supportURL      https://github.com/SVNKoch/my-home-assistant-automatic-link-redirect-userscript/issues
// @license         MIT
// ==/UserScript==

waitForLinkElementToLoad(function() {
	if (!isBackNavigation()) {
        redirectToHomeAssistantInstance();
    }
});

function waitForLinkElementToLoad(callback) {
    const targetElement = document.querySelector('a.open-link');
    if (targetElement) {
        callback(targetElement);
    } else {
        const observer = new MutationObserver(function(mutationsList, observer) {
            const targetElement = document.querySelector('a.open-link');
            if (targetElement) {
                observer.disconnect();
                callback(targetElement);
            }
        });

        observer.observe(document.body, { childList: true, subtree: true });
    }
}

function redirectToHomeAssistantInstance() {
    const openLink = document.querySelector('a.open-link');
	if (openLink) {
		window.location.href = openLink.href;
	}
}

function isBackNavigation() {
    const navigationEntries = window.performance.getEntriesByType('navigation');
    if (navigationEntries.length > 0) {
        const navType = navigationEntries[0].type;
        return navType === 'back_forward';
    }
    return false;
}