Reddit Video Downloader

Adds button to direct link or download the stupidly hard to save or share directly reddit videos. Designed to work on new Reddit only. Buttons appear when viewing the specific post -- does not work on preview/expand on post listing pages.

您需要先安裝使用者腳本管理器擴展,如 TampermonkeyGreasemonkeyViolentmonkey 之後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyUserscripts 後才能安裝該腳本。

你需要先安裝一款使用者腳本管理器擴展,比如 Tampermonkey,才能安裝此腳本

您需要先安裝使用者腳本管理器擴充功能後才能安裝該腳本。

(我已經安裝了使用者腳本管理器,讓我安裝!)

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

(我已經安裝了使用者樣式管理器,讓我安裝!)

// ==UserScript==
// @name         Reddit Video Downloader
// @namespace    https://lawrenzo.com/p/reddit-video-downloader
// @version      0.7.1
// @description  Adds button to direct link or download the stupidly hard to save or share directly reddit videos. Designed to work on new Reddit only. Buttons appear when viewing the specific post -- does not work on preview/expand on post listing pages.
// @author       Lawrence Sim
// @license      WTFPL (http://www.wtfpl.net)
// @grant        unsafeWindow
// @match        https://www.reddit.com/*
// @noframes
// ==/UserScript==
'use strict';
(function() {
    var defaultStyles = {
        "margin":        "0.4em",
        "font-size":     "0.8em",
        "padding":       "0.4em 0.6em",
        "border-radius": "4px",
        "border":        "1px solid #d9d9d9",
        "background":    "#fff",
        "cursor":        "pointer",
        "color":         "#000",  // Ensure text color is set
        "text-align":    "center" // Center text within the button
    };

    function createBtn(parent, opts) {
        let btn = document.createElement("button");
        btn.innerHTML = opts.html;
        Object.assign(btn.style, defaultStyles);
        if(opts.disabled) {
            btn.disabled = true;
            btn.style.background = "#bbb";
            btn.style.cursor = "wait";
        }
        if(opts.href) btn.addEventListener('click', () => window.open(opts.href));
        parent.append(btn);
        return btn;
    }

    function addLinks() {
        let contentDiv = document.querySelector("shreddit-post"),
            videoElem = contentDiv && contentDiv.querySelector("video") || contentDiv && contentDiv.querySelector("shreddit-player-2");

        if(!videoElem) return;

        if(videoElem.getAttribute("vlinked")) return;
        videoElem.setAttribute("vlinked", 1);

        let source = videoElem.querySelector("source");
        if(source && source.src && (~source.src.search(".gif") || ~source.src.search(".mp4"))) {
            let buttonRow = document.createElement("div");
            contentDiv.append(buttonRow);
            createBtn(buttonRow, {
                href: source.src,
                html: "Download"
            });
            return;
        }

        let buttonRow = document.createElement("div");
        contentDiv.append(buttonRow);
        let directBtn = createBtn(buttonRow, {
            html: "Sourcing video...",
            disabled: true
        });
        createBtn(buttonRow, {
            href: window.location.href.replace(/reddit.com\//, "redditsave.com/info?url="),
            html: "Download via RedditSave"
        });
        createBtn(buttonRow, {
            href: window.location.href.replace(/reddit.com/, "reddit.tube"),
            html: "Download via Reddit.Tube"
        });

        let i = 0,
            animateBtn = setInterval(() => {
                i = ++i > 3 ? 1 : i;
                directBtn.innerHTML = "Sourcing video"+(".".repeat(i)) + " ".repeat(3-i);
            }, 750);

        fetch(window.location.href.split("?")[0].replace(/\/$/, "")+".json")
            .then(res => res.ok ? res.json() : Promise.reject(res.statusText))
            .then(json => {
                let postData = json[0].data.children[0].data,
                    vidData = postData.secure_media && postData.secure_media.reddit_video;
                clearInterval(animateBtn);
                if(!vidData) {
                    directBtn.innerHTML = "Error pulling source";
                    directBtn.style.cursor = "default";
                    console.log(postData || json);
                } else {
                    directBtn.innerHTML = "Direct Video Link (no sound)";
                    directBtn.addEventListener('click', () => window.open(vidData.fallback_url));
                    directBtn.disabled = false;
                    Object.assign(directBtn.style, defaultStyles);
                }
            })
            .catch(err => {
                clearInterval(animateBtn);
                console.error(err);
            });
    }

    document.addEventListener('DOMContentLoaded', addLinks);

    let redditWatcher = window.redditWatcher || (unsafeWindow && unsafeWindow.redditWatcher);
    if(redditWatcher) {
        redditWatcher.body.onUpdate(addLinks);
        redditWatcher.feed.onChange(() => {});
    }

    new MutationObserver(() => {
        addLinks();
        let firstPost = document.querySelector(".ListingLayout-outerContainer div[data-testid='post-container']");
        if(firstPost) firstPost.addEventListener('DOMNodeRemoved', addLinks);
    }).observe(document.body, {childList: true, subtree: true});
})();