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Mark Watched YouTube Videos

Add an indicator for watched videos on YouTube

目前为 2018-03-13 提交的版本,查看 最新版本

// ==UserScript==
// @name        Mark Watched YouTube Videos
// @namespace   MarkWatchedYouTubeVideos
// @description Add an indicator for watched videos on YouTube
// @version     1.0.9
// @license     AGPL v3
// @author      jcunews
// @include     https://www.youtube.com/*
// @grant       GM_getValue
// @grant       GM_setValue
// ==/UserScript==

(function() {
  
  //=== config start ===
  var maxWatchedVideoAge   = 60; //number of days. set to zero to disable (not recommended)
  var pageLoadMarkDelay    = 400; //number of milliseconds to wait before marking video items on page load phase (increase if slow network/browser)
  var contentLoadMarkDelay = 600; //number of milliseconds to wait before marking video items on content load phase (increase if slow network/browser)
  //=== config end ===

  var watchedVideos, ageMultiplier = 24 * 60 * 60 * 1000;

  function getVideoId(url) {
    var vid = url.match(/\/watch(?:\?|.*?&)v=([^&]+)/);
    if (vid) vid = vid[1] || vid[2];
    return vid;
  }

  function watched(vid, res) {
    res = -1;
    watchedVideos.some(function(v, i) {
      if (v.id === vid) {
        res = i;
        return true;
      } else return false;
    });
    return res;
  }

  function processVideoItems(selector) {
    var items = document.querySelectorAll(selector), i, link;
    for (i = items.length-1; i >= 0; i--) {
      link = items[i].querySelector("A");
      if (link) {
        if (watched(getVideoId(link.href)) >= 0) {
          items[i].classList.add("watched");
        } else items[i].classList.remove("watched");
      }
    }
  }

  function processAllVideoItems() {
    //home page
    processVideoItems(".yt-uix-shelfslider-list>.yt-shelf-grid-item");
    //subscriptions page
    processVideoItems(".multirow-shelf>.shelf-content>.yt-shelf-grid-item");
    //channel/user home page
    processVideoItems("#contents>.ytd-item-section-renderer>.ytd-newspaper-renderer"); //old
    processVideoItems("#items>.yt-horizontal-list-renderer"); //old
    processVideoItems("#contents>.ytd-channel-featured-content-renderer"); //new
    processVideoItems("#contents>.ytd-shelf-renderer>#grid-container>.ytd-expanded-shelf-contents-renderer"); //new
    //channel/user video page
    processVideoItems(".yt-uix-slider-list>.featured-content-item");
    processVideoItems("#items>.ytd-grid-renderer");
    //channel/user playlist page
    processVideoItems(".expanded-shelf>.expanded-shelf-content-list>.expanded-shelf-content-item-wrapper");
    //channel/user playlist item page
    processVideoItems(".pl-video-list .pl-video-table .pl-video");
    //channel/user videos page
    processVideoItems(".channels-browse-content-grid>.channels-content-item");
    //channel/user search page
    if (/^\/(?:channel|user)\/.*?\/search/.test(location.pathname)) {
      processVideoItems(".ytd-browse #contents>.ytd-item-section-renderer"); //new
    }
    //search page
    processVideoItems("#results>.section-list .item-section>li"); //old
    processVideoItems("#browse-items-primary>.browse-list-item-container"); //old
    processVideoItems(".ytd-search #contents>.ytd-item-section-renderer"); //new
    //video page sidebar
    processVideoItems(".watch-sidebar-body>.video-list>.video-list-item"); //old
    processVideoItems(".playlist-videos-container>.playlist-videos-list>li"); //old
    processVideoItems("#items>.ytd-watch-next-secondary-results-renderer .ytd-compact-video-renderer"); //new
  }

  function processPage() {
    //get list of watched videos
    watchedVideos = GM_getValue("watchedVideos");
    if (!watchedVideos) {
      watchedVideos = "[]";
      GM_setValue("watchedVideos", watchedVideos);
    }
    try {
      watchedVideos = JSON.parse(watchedVideos);
      if (watchedVideos.length && (("object" !== typeof watchedVideos[0]) || !watchedVideos[0].id)) {
        watchedVideos = "[]";
        GM_setValue("watchedVideos", watchedVideos);
      }
    } catch(z) {
      watchedVideos = "[]";
      GM_setValue("watchedVideos", watchedVideos);
    }

    //remove old watched video history
    var i = 0, now = (new Date()).valueOf();
    if (maxWatchedVideoAge > 0) {
      while (i < watchedVideos.length) {
        if (((now - watchedVideos.timestamp) / ageMultiplier) > maxWatchedVideoAge) {
          watchedVideos.splice(0, 1);
        } else break;
      }
    }

    //check and remember current video
    var vid = getVideoId(location.href);
    if (vid && (watched(vid) < 0)) {
      watchedVideos.push({id: vid, timestamp: now});
      GM_setValue("watchedVideos", JSON.stringify(watchedVideos));
    }

    //=== mark watched videos ===
    processAllVideoItems();
  }

  var style = document.createElement("STYLE");
  style.innerHTML = '\
/* subscription page, channel/user home page feeds */\
.watched .yt-lockup-content, .watched .yt-lockup-content *,\
/* channel/user home page videos, channel/user videos page */\
.watched .channels-content-item,\
/* video page */\
.watched,\
.watched .content-wrapper,\
.watched>a\
    { background-color: #cec }\
.playlist-videos-container>.playlist-videos-list>li.watched,\
.playlist-videos-container>.playlist-videos-list>li.watched>a,\
.playlist-videos-container>.playlist-videos-list>li.watched .yt-ui-ellipsis\
    { background-color: #030 !important }\
';
  document.head.appendChild(style);

  var lastFocusState = document.hasFocus();
  addEventListener("blur", function() {
    lastFocusState = false;
  });
  addEventListener("focus", function() {
    if (!lastFocusState) processPage();
    lastFocusState = true;
  });
  addEventListener("click", function(ev, vid, i) {
    if (!ev.button && ev.altKey) {
      i = ev.target;
      if (i) {
        if (i.href) {
          vid = getVideoId(i.href);
        } else {
          i = i.parentNode;
          while (i) {
            if (i.tagName === "A") {
              vid = getVideoId(i.href);
              break;
            }
            i = i.parentNode;
          }
        }
        if (vid) {
          i = watched(vid);
          if (i >= 0) {
            watchedVideos.splice(i, 1);
          } else watchedVideos.push({id: vid, timestamp: (new Date()).valueOf()});
          GM_setValue("watchedVideos", JSON.stringify(watchedVideos));
          processAllVideoItems();
        }
      }
    }
  });
  if (window["body-container"]) {
    addEventListener("spfdone", processPage);
    processPage();
  } else { //new
    var t=0;
    (function init(vm) {
      if (vm = document.querySelector("#visibility-monitor")) {
        vm.addEventListener("viewport-load", function() {
          clearTimeout(t);
          t = setTimeout(processPage, 300);
        });
      } else setTimeout(init, 100);
    })();
    addEventListener("load", function() {
      setTimeout(processPage, pageLoadMarkDelay);
    });
    addEventListener("spfprocess", function() {
      setTimeout(processPage, contentLoadMarkDelay);
    });
  }
})();