// ==UserScript==
// @name:ko           유튜브 극장모드
// @name              Youtube Theatermode
// @name:ru           Youtube Театральный режим
// @name:jp           Youtubeシアターモード
// @name:zh-CN        优酷影院模式
// @name:zh-TW        優酷影院模式

// @description:ko    유튜브 화면을 자동으로 꽉 찬 화면으로 바꿉니다.
// @description       Turn to wider Youtube screen automatially.
// @description:ru    Автоматически переключайтесь на более широкий экран Youtube.
// @description:jp    自動的に広いYouTube画面に移動します
// @description:zh-CN 自动转到更宽的 YouTube 屏幕
// @description:zh-TW 自動轉到更寬的 YouTube 屏幕

// @namespace         https://ndaesik.tistory.com/
// @version           2022.02.10.19:05
// @author            ndaesik
// @icon              https://lh3.googleusercontent.com/iLZyxGK7l1343U4E7eAfgKbRWW6qhzCJq-Z92M60JzCMntFyaFF2GUQVRxPhfGcy6qRISLjHv4fX1vtq0TZkZMAzBjM
// @match             https://www.youtube.com/*
// @downloadURL none
// ==/UserScript==
let DEF = document.createElement("style"), TOG = document.createElement("style")
DEF.innerText = `
[dark] .gstl_50.sbdd_a * {background-color:#232323!important; border-color:#282828!important}
[dark] .gsfs,[dark] .sbpqs_a{color:#FFF!important}
ytd-app:not([guide-persistent-and-visible]) [theater] #player.ytd-watch {height: 100vh!important; max-height: 100vh!important}
:is(ytd-watch-flexy[theater],ytd-watch-flexy[fullscreen]) #player-theater-container.ytd-watch-flexy,
ytd-app:not([guide-persistent-and-visible]) [theater] #player video {
width: 100%!important; height: 100vh!important; max-height: 100vh!important; max-width: 100%!important; left: 0!important}`
document.head.appendChild(DEF)
TOG.innerText = `
ytd-app:not([guide-persistent-and-visible]) :is(#masthead-container ytd-masthead, #masthead-container.ytd-app::after) {transform: translateY(-56px); transition: transform .1s .3s ease-out}
ytd-app:not([guide-persistent-and-visible]) :is(#masthead-container:hover ytd-masthead, #masthead-container:hover.ytd-app::after, #masthead-container:focus-within ytd-masthead) {transform: translateY(0px)}
ytd-app:not([guide-persistent-and-visible]) ytd-page-manager {margin-top: 0!important}`
TOG.className = "TOGstyle"

window.addEventListener("yt-navigate-finish", () => {
    document.head.appendChild(TOG)
    let full = setInterval(() => {((document.querySelector("#ytd-player")?.offsetWidth + 50) < window.innerWidth) ? document.querySelector(".ytp-size-button")?.click() : clearInterval(full)},100)
    setTimeout(() => {if (document.querySelector("ytd-watch-flexy") == null) document.querySelector(".TOGstyle")?.remove()}, 100)
    setTimeout(() => {clearInterval(full)}, 10000)
    window.scrollTo(0, 0)
})
window.addEventListener("mouseup", () => {
  setTimeout(() => {
      ((document.querySelector("#ytd-player").offsetWidth + 50) < window.innerWidth || document.URL.indexOf("watch") == -1) ?
      document.querySelector(".TOGstyle")?.remove() : document.head.appendChild(TOG)
  }, 100)
})