Reddit Post Filter

Hide posts or comments containing specific keywords, by users, or comment authors, with toggle and settings popup

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

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

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

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

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

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

(I already have a user script manager, let me install it!)

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.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Reddit Post Filter
// @namespace    http://tampermonkey.net/
// @version      2.0
// @description  Hide posts or comments containing specific keywords, by users, or comment authors, with toggle and settings popup
// @author       brfuk
// @license      MIT
// @match        *://www.reddit.com/*
// @grant        GM_setValue
// @grant        GM_getValue
// ==/UserScript==


(function() {
    'use strict';

    // Retrieve stored values
    let blockedKeywords = GM_getValue('blockedKeywords', ["test"]);
    let blockedUsers = GM_getValue('blockedUsers', ["test"]);
    let blockedCommenters = GM_getValue('blockedCommenters', ["test"]);
    let filterEnabled = GM_getValue('filterEnabled', true);

    // Add styles
    const style = `
        #popup-container {
            display: none;
            position: fixed;
            top: 10%;
            left: 50%;
            transform: translateX(-50%);
            background-color: white;
            border: 1px solid #ccc;
            padding: 10px;
            box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
            z-index: 9999;
            width: 300px;
            height: 500px;
            overflow: auto;
        }
        #popup-container h2 {
            text-align: center;
        }
        #popup-container label {
            display: block;
            margin-top: 5px;
        }
        #popup-container textarea {
            width: 100%;
            height: 95px;
            margin-top: 1px;
        }
        #popup-container button {
            display: block;
            width: 100%;
            margin-top: 1px;
            padding: 1px 1px;
            background-color: #4CAF50;
            color: white;
            border: none;
            cursor: pointer;
        }
        #popup-container button:hover {
            background-color: #45a049;
        }
        #open-popup-button {
            position: fixed;
            bottom: 10px;
            right: 10px;
            background-color: #4CAF50;
            color: white;
            border: none;
            padding: 5px 5px;
            cursor: pointer;
            font-size: 14px;
            border-radius: 5px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
            transition: background-color 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        #open-popup-button:hover {
            background-color: #45a049;
        }
    `;

    const popupContainer = document.createElement('div');
    popupContainer.id = 'popup-container';
    popupContainer.style.display = 'none';
    popupContainer.innerHTML = `
        <h2>Modify Keywords and Users</h2>
        <label for="enableFilter">
            <input type="checkbox" id="enableFilter" ${filterEnabled ? "checked" : ""}>
            Enable Filtering
        </label>

        <label for="keywords">Keywords:</label>
        <textarea id="keywords">${blockedKeywords.join("\n")}</textarea>

        <label for="users">Post Authors:</label>
        <textarea id="users">${blockedUsers.join("\n")}</textarea>

        <label for="commenters">Comment Authors:</label>
        <textarea id="commenters">${blockedCommenters.join("\n")}</textarea>

        <button id="save-button">Save</button>
    `;
    document.body.appendChild(popupContainer);

    const styleTag = document.createElement('style');
    styleTag.innerHTML = style;
    document.head.appendChild(styleTag);

    const openButton = document.createElement('button');
    openButton.id = 'open-popup-button';
    openButton.innerText = '⚙️';
    document.body.appendChild(openButton);

    openButton.addEventListener('click', () => {
        popupContainer.style.display = 'block';
    });

    document.getElementById('save-button').addEventListener('click', () => {
        const updatedKeywords = document.getElementById('keywords').value.split("\n").filter(k => k.trim() !== "");
        const updatedUsers = document.getElementById('users').value.split("\n").filter(u => u.trim() !== "");
        const updatedCommenters = document.getElementById('commenters').value.split("\n").filter(c => c.trim() !== "");
        const enableFilter = document.getElementById('enableFilter').checked;

        GM_setValue('blockedKeywords', updatedKeywords);
        GM_setValue('blockedUsers', updatedUsers);
        GM_setValue('blockedCommenters', updatedCommenters);
        GM_setValue('filterEnabled', enableFilter);

        blockedKeywords = updatedKeywords;
        blockedUsers = updatedUsers;
        blockedCommenters = updatedCommenters;
        filterEnabled = enableFilter;

        popupContainer.style.display = 'none';
        hideBlockedPosts();
        hideBlockedComments();
    });

    window.addEventListener('keydown', (event) => {
        if (event.ctrlKey && event.key === 'z') {
            popupContainer.style.display = 'block';
        }
    });

//     window.addEventListener('keydown', (event) => {
//         if (event.key === 'Escape') {
//             popupContainer.style.display = 'none';
//         }
//     });

    let escInterceptor = (event) => {
        if (event.key === 'Escape') {
            event.stopImmediatePropagation();
            event.preventDefault();
            popupContainer.style.display = 'none';
            window.removeEventListener('keydown', escInterceptor, true); // ✅ 弹窗关闭后移除拦截器
        }
    };

    window.addEventListener('keydown', (event) => {
        if (event.ctrlKey && event.key === 'z') {
            popupContainer.style.display = 'block';
            window.addEventListener('keydown', escInterceptor, true); // ✅ 弹窗打开时添加拦截器
        }
    });

    openButton.addEventListener('click', () => {
        popupContainer.style.display = 'block';
        window.addEventListener('keydown', escInterceptor, true); // ✅ 弹窗打开时添加拦截器
    });



    function hideBlockedPosts() {
        if (!filterEnabled) return;

        let posts = document.querySelectorAll('shreddit-post');
        posts.forEach(post => {
            let titleElem = post.querySelector('[id^="post-title"]');
            if (!titleElem) return;

            let titleText = titleElem.innerText.toLowerCase();
            let authorName = post.getAttribute('author');

            if (blockedKeywords.some(keyword => titleText.includes(keyword.toLowerCase()))) {
                console.log(`🔕 Post blocked - Keyword match`);
                post.style.display = 'none';
                return;
            }

            if (blockedUsers.includes(authorName)) {
                console.log(`🔕 Post blocked - Author: ${authorName}`);
                post.style.display = 'none';
            }
        });
    }

    function hideBlockedComments() {
        if (!filterEnabled) return;

        const comments = document.querySelectorAll('shreddit-comment');
        comments.forEach(comment => {
            const commenterName = comment.getAttribute('author');
            if (!commenterName) return;

            if (blockedCommenters.includes(commenterName)) {
                console.log(`💬 Comment blocked - Author: ${commenterName}`);
                comment.style.display = 'none';
            }
        });
    }

    hideBlockedPosts();
    hideBlockedComments();

    const observer = new MutationObserver(() => {
        hideBlockedPosts();
        hideBlockedComments();
    });
    observer.observe(document.body, { childList: true, subtree: true });
})();