invidious/assets/js/embed.js

"use strict";
var video_data = JSON.parse(document.getElementById("video_data").textContent);

function get_playlist(plid) {
  var plid_url;
  if (plid.startsWith("RD")) {
    plid_url =
      "/api/v1/mixes/" +
      plid +
      "?continuation=" +
      video_data.id +
      "&format=html&hl=" +
      video_data.preferences.locale;
  } else {
    plid_url =
      "/api/v1/playlists/" +
      plid +
      "?index=" +
      video_data.index +
      "&continuation" +
      video_data.id +
      "&format=html&hl=" +
      video_data.preferences.locale;
  }

  helpers.xhr(
    "GET",
    plid_url,
    { retries: 5, entity_name: "playlist" },
    {
      on200: function (response) {
        if (!response.nextVideo) return;

        player.on("ended", function () {
          var url = new URL("https://example.com/embed/" + response.nextVideo);

          url.searchParams.set("list", plid);
          if (!plid.startsWith("RD"))
            url.searchParams.set("index", response.index);
          if (video_data.params.autoplay || video_data.params.continue_autoplay)
            url.searchParams.set("autoplay", "1");
          if (video_data.params.listen !== video_data.preferences.listen)
            url.searchParams.set("listen", video_data.params.listen);
          if (video_data.params.speed !== video_data.preferences.speed)
            url.searchParams.set("speed", video_data.params.speed);
          if (video_data.params.local !== video_data.preferences.local)
            url.searchParams.set("local", video_data.params.local);

          location.assign(url.pathname + url.search);
        });
      },
    },
  );
}

addEventListener("load", function (e) {
  if (video_data.plid) {
    get_playlist(video_data.plid);
  } else if (video_data.video_series) {
    player.on("ended", function () {
      var url = new URL(
        "https://example.com/embed/" + video_data.video_series.shift(),
      );

      if (video_data.params.autoplay || video_data.params.continue_autoplay)
        url.searchParams.set("autoplay", "1");
      if (video_data.params.listen !== video_data.preferences.listen)
        url.searchParams.set("listen", video_data.params.listen);
      if (video_data.params.speed !== video_data.preferences.speed)
        url.searchParams.set("speed", video_data.params.speed);
      if (video_data.params.local !== video_data.preferences.local)
        url.searchParams.set("local", video_data.params.local);
      if (video_data.video_series.length !== 0)
        url.searchParams.set("playlist", video_data.video_series.join(","));

      location.assign(url.pathname + url.search);
    });
  }
});