[BROKEN] Show Amazon Questions button + context menu

Creates a "Show questions" button for Amazon. Once clicked it opens a new tab of the questions.

Bu betiği kurabilmeniz için Tampermonkey, Greasemonkey ya da Violentmonkey gibi bir kullanıcı betiği eklentisini kurmanız gerekmektedir.

Bu betiği kurabilmeniz için Tampermonkey ya da Violentmonkey gibi bir kullanıcı betiği eklentisini kurmanız gerekmektedir.

Bu betiği kurabilmeniz için Tampermonkey ya da Violentmonkey gibi bir kullanıcı betiği eklentisini kurmanız gerekmektedir.

Bu betiği kurabilmeniz için Tampermonkey ya da Userscripts gibi bir kullanıcı betiği eklentisini kurmanız gerekmektedir.

You will need to install an extension such as Tampermonkey to install this script.

Bu komut dosyasını yüklemek için bir kullanıcı komut dosyası yöneticisi uzantısı yüklemeniz gerekecek.

(Zaten bir kullanıcı komut dosyası yöneticim var, kurmama izin verin!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Zateb bir user-style yöneticim var, yükleyeyim!)

// ==UserScript==
// @name     [BROKEN] Show Amazon Questions button + context menu
// @author   u/iNeedAProperAccount
// @description Creates a "Show questions" button for Amazon. Once clicked it opens a new tab of the questions.
//              It also creates an "Open Questions tab" context menu entry, which also when clicked opens a new tab of the questions.
//              Thanks to u/CaptSkinny, u/lilgeeky, u/Sanpete_in_Utah and u/TTum.
//              How it looks like:
//              https://i.imgur.com/mZSLDun.png
//              https://i.imgur.com/GHmUuEM.png
//              Original thread at: https://old.reddit.com/r/AmazonVine/comments/14aynxt/are_product_question_and_answer_sections_gone/
// @version  0.6
// @license  MIT
// @match    *://*.amazon.com/*
// @match    *://*.amazon.ca/*
// @match    *://*.amazon.com.mx/*
// @match    *://*.amazon.co.uk/*
// @match    *://*.amazon.fr/*
// @match    *://*.amazon.de/*
// @match    *://*.amazon.es/*
// @match    *://*.amazon.it/*
// @match    *://*.amazon.nl/*
// @match    *://*.amazon.se/*
// @match    *://*.amazon.pl/*
// @match    *://*.amazon.com.tr/*
// @match    *://*.amazon.ae/*
// @match    *://*.amazon.sa/*
// @match    *://*.amazon.co.jp/*
// @match    *://*.amazon.in/*
// @match    *://*.amazon.sg/*
// @match    *://*.amazon.com.au/*
// @match    *://*.amazon.com.br/*
// @icon     https://www.google.com/s2/favicons?sz=64&domain=amazon.ca
// @grant    GM_registerMenuCommand
// @namespace https://greasyfork.org/users/877912
// ==/UserScript==

const PRODUCT_TITLE_SELECTOR = "span#productTitle";
const REGEX_PATTERN = "^(http[s]?://[^/]+)/(?:.+?/)?(?:dp|gp/product|asin)/(?:.+?/)?([a-zA-Z0-9]{10})(?:[/?]|$)";

function getQuestionsUrl() {
    try {
        const url = document.URL;
        const regex = new RegExp(REGEX_PATTERN, "i");
        const matches = url.match(regex);

        if (matches) {
            const scheme_and_host = matches[1];
            const asin = matches[2];
            if (scheme_and_host && asin) {
                return `${scheme_and_host}/ask/questions/asin/${asin}`;
            }
        }
    } catch (error) {
        console.error("Error in getQuestionsUrl:", error);
    }
}

function contextOpenQuestionsTab() {
    try {
        const questions_url = getQuestionsUrl();
        if (questions_url) {
            window.open(questions_url, '_blank');
        }
    } catch (error) {
        console.error("Error in contextOpenQuestionsTab:", error);
    }
}

function openQuestionsTab() {
    try {
        const questions_url = getQuestionsUrl();

        if (questions_url) {
            const productTitle = document.querySelector(PRODUCT_TITLE_SELECTOR);

            if (productTitle) {
                const button = document.createElement("button");
                button.innerHTML = "Show Questions";
                button.style.margin = '0.2rem 0.2rem 0.2rem 0rem';
                button.style.fontSize = '0.9rem';
                button.addEventListener("click", function () {
                    window.open(questions_url, '_blank');
                });

                const brElement = document.createElement("br");
                productTitle.parentNode.insertBefore(brElement, productTitle.nextSibling);

                productTitle.parentNode.insertBefore(button, brElement.nextSibling);

                const brAfter = document.createElement("br");
                productTitle.parentNode.insertBefore(brAfter, button.nextSibling);

                GM_registerMenuCommand("Open Questions tab", contextOpenQuestionsTab, "a");
            }
        }
    } catch (error) {
        console.error("Error in openQuestionsTab:", error);
    }
}

const observer = new MutationObserver(function (mutations) {
    try {
        mutations.forEach(function (mutation) {
            if (mutation.type === 'childList' && mutation.addedNodes.length > 0) {
                for (let i = 0; i < mutation.addedNodes.length; i++) {
                    const addedNode = mutation.addedNodes[i];
                    if (addedNode.nodeType === 1 && addedNode.matches && addedNode.matches(PRODUCT_TITLE_SELECTOR)) {
                        openQuestionsTab();
                        break;
                    }
                }
            }
        });
    } catch (error) {
        console.error("Error in MutationObserver:", error);
    }
});

const observerConfig = {
    childList: true,
    subtree: true
};

try {
    observer.observe(document.body, observerConfig);
    openQuestionsTab();
} catch (error) {
    console.error("Error in script initialization:", error);
}