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Coomer Video Filter

Filters posts without videos on Coomer

// ==UserScript==
// @name         Coomer Video Filter
// @namespace    http://coomer.su
// @version      1.4
// @description  Filters posts without videos on Coomer
// @match        https://*.coomer.party/*/user/*
// @match        https://*.kemono.party/*/user/*
// @match        https://*.coomer.su/*/user/*
// @match        https://*.kemono.su/*/user/*
// @grant        none
// ==/UserScript==

(async function() {
    'use strict';

    // Helper function to wait for elements that may load dynamically
    async function querySelectorAsync(selector) {
        return await new Promise(resolve => {
            let elm = document.querySelector(selector);
            if (elm) return resolve(elm);

            const observer = new MutationObserver(mutations => {
                elm = document.querySelector(selector);
                if (elm) {
                    resolve(elm);
                    observer.disconnect();
                }
            });
            observer.observe(document.body, { childList: true, subtree: true });
        });
    }

    // Function to check if a post contains a video
    async function hasVideo(postUrl) {
        return new Promise(resolve => {
            fetch(postUrl)
                .then(response => response.text())
                .then(html => {
                    const parser = new DOMParser();
                    const doc = parser.parseFromString(html, "text/html");
                    const videoExists = doc.querySelector("video") !== null;
                    resolve(videoExists);
                })
                .catch(err => {
                    console.error("Error fetching post:", postUrl, err);
                    resolve(false); // Assume no video if error occurs
                });
        });
    }

    // Function to filter out posts without videos
    async function filterVideos() {
        const posts = [...(await querySelectorAsync(".card-list__items")).children];
        for (let post of posts) {
            const postLink = post.querySelector("a")?.href;
            if (postLink) {
                const videoPresent = await hasVideo(postLink);
                if (!videoPresent) {
                    post.remove(); // Remove post if it doesn't have a video
                }
            }
        }
    }

    // Add a filter button to the page to trigger the video filtering
    async function addFilterButton() {
        const filterBtn = document.createElement("button");
        filterBtn.textContent = "Filter Videos";
        filterBtn.style = "position: fixed; top: 10px; right: 10px; z-index: 9999;";
        filterBtn.onclick = function() {
            filterBtn.remove(); // Remove button after it's clicked
            filterVideos(); // Start filtering videos
        };

        const form = await querySelectorAsync("form"); // Wait for a form element to append the button to
        form.appendChild(filterBtn);
    }

    // Add the filter button when the page loads
    addFilterButton();

})();