// ==UserScript==
// @name        No Apple News
// @description Remove Apple related entries in news sites
// @version 0.1.2
// @grant none
// @author Lucie Cupcakes
// @namespace https://lucdev.net
// @license UNLICENSE - https://unlicense.org/
// @match *://news.ycombinator.com/
// @match *://news.ycombinator.com/news*
// @match *://lobste.rs/
// @match *://lobste.rs/page/*
// @downloadURL none
// ==/UserScript==
(() => {
    const filterWords = [
        'apple',
        'mac',
        'iphone',
        'ipad',
        'ipod',
        'icloud',
        'ios',
        'siri',
        'm1',
        'macbook',
        'airbook',
        'macos',
        'safari',
    ];

    const filterWordsVar = [
        ...filterWords.map((el) => `${el} `),
        ...filterWords.map((el) => ` ${el}`),
    ];

    const domReady = (cb) => {
        if (document.readyState === 'complete') {
            return cb();
        }
        window.addEventListener('DOMContentLoaded', cb);
    };

    const strIncludesAny = (str, findArray) => {
        if (!findArray || !str || findArray.length == 0 || str == '') {
            return false;
        }
        for (const findEl of findArray) {
            if (str.includes(findEl)) {
                return true;
            }
        }
        return false;
    };

    const removeHtmlElement = (el) => el.parentElement.removeChild(el);

    const filterArticlesByHostname = {
        'news.ycombinator.com': () => {
            return Array.from(document.querySelectorAll('.title > a'))
                .map((el) => {
                    // Check if matches blocklist
                    if (!strIncludesAny(el.innerText.toLowerCase(), filterWordsVar)) {
                        return null;
                    }
                    // Grab metadata
                    const articleTr = el.parentElement.parentElement;
                    const id = articleTr.id.repeat(1);
                    const title = el.innerText.repeat(1);
                    const link = el.href.repeat(1);
                    // Remove entry
                    (() => {
                        [
                            document.querySelector(`.athing[id="${id}"]`), // articleTr
                            document.querySelector(`.athing[id="${id}"] + tr`), //subtext
                            document.querySelector(`.athing[id="${id}"] + tr + tr.spacer`),
                        ]
                            .filter((el) => el !== null)
                            .forEach(removeHtmlElement);
                    })();
                    // Return metadata
                    return {
                        title,
                        link,
                        id,
                    };
                })
                .filter((el) => el !== null);
        },
        'lobste.rs': () => {
            return Array.from(document.querySelectorAll('.story .u-url'))
                .map((el) => {
                    // Check if matches blocklist
                    if (!strIncludesAny(el.innerText.toLowerCase(), filterWordsVar)) {
                        return null;
                    }
                    // Grab metadata
                    const title = el.innerText.repeat(1);
                    const link = el.href.repeat(1);
                    // Remove entry
                    (() => {
                        const articleDiv =
                            el.parentElement.parentElement.parentElement.parentElement;
                        removeHtmlElement(articleDiv);
                    })();
                    // Return metadata
                    return {
                        title,
                        link,
                    };
                })
                .filter((el) => el !== null);
        },
    };

    domReady(() => {
        const articles = filterArticlesByHostname[location.hostname]();
        console.log(`Filtered ${articles.length} article(s).`, articles);
    });
})();