// ==UserScript==
// @name               Tong Li Online: Blurs R-rated Covers
// @name:zh-TW         東立漫遊網：模糊限制級封面
// @description        Blurs the covers of R-rated novels on Tong Li Online.
// @description:zh-TW  模糊東立漫遊網限制級書本的封面。
// @icon               https://icons.duckduckgo.com/ip3/www.tongli.com.tw.ico
// @author             Jason Kwok
// @namespace          https://jasonhk.dev/
// @version            1.0.0
// @license            MIT
// @match              https://www.tongli.com.tw/
// @match              https://www.tongli.com.tw/index.aspx
// @match              https://www.tongli.com.tw/webpagebooks.aspx
// @match              https://www.tongli.com.tw/WebPageBooks.aspx
// @match              https://www.tongli.com.tw/BooksList.aspx
// @match              https://www.tongli.com.tw/GbooksList.aspx
// @match              https://www.tongli.com.tw/ThemeBL.aspx
// @match              https://www.tongli.com.tw/ThemeBeautiful.aspx
// @match              https://www.tongli.com.tw/ThemeGL.aspx
// @match              https://www.tongli.com.tw/NovelDetail.aspx
// @run-at             document-end
// @grant              GM_addStyle
// @require            https://update.greasyfork.icu/scripts/482311/1296481/queue.js
// @supportURL         https://greasyfork.org/scripts/482312/feedback
// @downloadURL none
// ==/UserScript==

GM_addStyle(`
    .b_package.nsfw img, .owl-item.nsfw > .item img
    {
        filter: blur(7.5px);
        transition: 0.3s;
    }

    .b_package.nsfw:hover img, .b_package.nsfw:active img,
    .owl-item.nsfw > .item:hover img, .owl-item.nsfw > .item:active img
    {
        filter: blur(0px);
    }
`);

const queue = new Queue({ autostart: true, concurrency: 20 });

const products = document.querySelectorAll(".b_package, .owl-item");
for (const product of products)
{
    queue.push(async () =>
    {
        const toBlur = await isNsfw(product.querySelector("a").href);
        if (toBlur) { product.classList.add("nsfw"); }
    });
}

async function isNsfw(url)
{
    try
    {
        const response = await fetch(url);
        if (response.status === 200)
        {
            const html = await response.text();
            const parser = new DOMParser();
            const page = parser.parseFromString(html, "text/html");

            if (page.getElementById("ContentPlaceHolder1_GradeTxt")?.innerText === "限制級") { return true; }
        }
    }
    catch (e)
    {
        console.error(e);
    }

    return false;
}