# FB過濾關鍵字
###### tags: `tampermonkey`, `javascript`, `chrome`

// ==UserScript==
// @name         FB過濾關鍵字
// @version      1.20240604
// @description  刪除所有提到的過濾字貼文
// @author       icps
// @match        https://www.facebook.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const keywords = [
        { type: "推薦", words: ["為你推薦", "贊助", "· 追蹤\n", "· 加入", " · \n加入", "品牌合作"] },
        { type: "劇透", words: ["咒術迴戰", "咒術", "五條", "五條悟", "gojo", "kaisen", "ryomen"] },
    ];

    function search() {
        // 貼文 <div class="x1lliihq">
        document.querySelectorAll(`div.x1lliihq:not([keyword_checked]):not(div.x1lliihq div.x1lliihq)`).forEach(element => {
            let shouldHide = false;
            let elementText = element.innerText.toLowerCase();
            keywords.forEach(keywordGroup => {
                keywordGroup.words.forEach(keyword => {
                    keyword = keyword.toLowerCase().trim()
                    // 是否含有關鍵字
                    if (elementText.includes(keyword)) {
                        shouldHide = true;
                        // console.log(element);
                        const name = extractText(elementText);
                        console.log(`刪除-${keywordGroup.type}：${keyword} ${name}`);
                        return;
                    };
                });
            });

            // 偵測是否為贊助
            element.querySelectorAll('div div span span span span a span span canvas').forEach(child => {
                if (child.className != null && child.getAttribute('style').includes("vertical-align: middle; display: inline-block;")) {
                    shouldHide = true;
                    // console.log(child);
                    let sponsor = extractText(element.innerText);
                    console.log(`刪除-贊助-${sponsor}`);
                    return;
                }
            });

            element.setAttribute('keyword_checked', "");

            if (shouldHide) {
                // 隱藏
                element.style.display = "none";
                // element.innerHTML = '';
                // element.remove(element);
            }
        });
    };

    function extractText(text) {
        text = text.replace(/Facebook/g, "").replace(/在線上\n/g, "")
        return text.substring(0, 20).split('\n')[0].trim()
    }

    window.addEventListener('load', function() {
        setInterval(search, 300);
        console.log("FB過濾已經開始運作");
    });

})();