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.

目前為 2022-03-05 提交的版本，檢視最新版本。

安裝腳本 ?

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Wrap lines

// ==UserScript==
// @name         Reddit Video Downloader
// @namespace    https://lawrenzo.com/p/reddit-video-downloader
// @version      0.3.1
// @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        none
// @match        *://*.reddit.com/*
// ==/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"
    };
    function createBtn(parent, opts) {
        let a = document.createElement("a"),
            btn = document.createElement("button");
        a.append(btn);
        a.href= opts.href;
        a.target = "_blank";
        btn.innerHTML = opts.html;
        for(let key in defaultStyles) {
            btn.style[key] = defaultStyles[key];
        }
        parent.append(a);
    }
    function addLinks(mutated, observer) {
        let videoElem = document.querySelector("[data-test-id='post-content'] video");
        if(!videoElem) return;
        if(videoElem.getAttribute("vlinked")) return observer && observer.disconnect();
        videoElem.setAttribute("vlinked", 1);
        fetch(window.location.href.split("?")[0].replace(/\/$/, "")+".json")
            .then(res => {
                if(!res && !res.ok) throw Error(res.statusText);
                return res.json();
            })
            .then(json => {
                let postData, vidData, contentDiv;
                try {
                    postData = json[0].data.children[0].data;
                    if(!postData.secure_media && postData.crosspost_parent_list && postData.crosspost_parent_list.length) {
                        postData = postData.crosspost_parent_list[0];
                    }
                    vidData = postData.secure_media.reddit_video;
                } catch(e) { }
                if(!vidData) return console.log(postData || json);
                console.log(vidData);
                contentDiv = videoElem.closest("[data-test-id='post-content']");
                createBtn(contentDiv, {
                    href: vidData.fallback_url,
                    html: "Direct Video Link (no sound)"
                });
                createBtn(contentDiv, {
                    href: window.location.href.replace(/reddit.com\//, "redditsave.com/info?url="),
                    html: "Download via RedditSave"
                });
                createBtn(contentDiv, {
                    href: window.location.href.replace(/reddit.com/, "reddit.tube"),
                    html: "Download via Reddit.Tube"
                });
            })
            .catch(err => console.log(err) && null);
        if(observer) observer.disconnect();
    }
    addLinks();
    (new MutationObserver(addLinks)).observe(document.body, {childList:true, subtree:true});
})();

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