// ==UserScript==
// @name         抖音视频去水印下载
// @namespace    https://github.com/hzlzh
// @version      1.0.0
// @description  下载没有水印的抖音视频(douyin.com)
// @author       hzlzh
// @include      https://www.douyin.com/video/*
// @grant GM_download
// @downloadURL none
// ==/UserScript==

const videoID = location.href.match(/video\/(\d*)/)[1];
fetch("https://www.douyin.com/web/api/v2/aweme/iteminfo/?item_ids=" + videoID)
  .then((res) => res.json())
  .then((json) => {
    const videoLink = json.item_list[0].video.play_addr.url_list[0].replace("playwm", "play");
    const btn = document.createElement("a");
    btn.textContent = '去水印下载';
    btn.href = videoLink;
    btn.target = '_blank'
    btn.style.position = 'fixed'
    btn.style.zIndex = '9999'
    btn.style.left = '8px'
    btn.style.top = '80px'
    btn.style.opacity = '0.8'
    btn.style.padding = '4px 8px'
    btn.style.color = '#ffffff'
    btn.style.background = '#fe2c55'
    document.body.appendChild(btn);
  });