discogs video adder

discogs-video-adder.js

// WIP script that auto-adds videos to a discogs release
// TODO: "full album" mode
// TODO: try multiple approaches (with and without artist/album title)

/*
x=[...document.querySelectorAll("[data-track-position]")]
  .map(e => e.querySelector("td:nth-child(3) span").textContent).join("\n")
console.log(x)
*/

const titles = `
Imperium In Imperio
Divine Dictation
The Opportunist
Relentless Hatred
Sacrificial Hire
War For Resources
Black Banner
Hara-Kiri
Stale Affairs
Regressive Agenda
Incarceration State
Unit 731
Icaro
Husayni / Handschar
Pharmacide

`.trim().split("\n");

(async () => {
  function setNativeValue(element, value) {
    const valueSetter = Object.getOwnPropertyDescriptor(element, "value")?.set;
    const prototype = Object.getPrototypeOf(element);
    const prototypeValueSetter = Object.getOwnPropertyDescriptor(prototype, "value")?.set;

    if (valueSetter && valueSetter !== prototypeValueSetter) {
      prototypeValueSetter.call(element, value);
    } else {
      valueSetter.call(element, value);
    }
  }

  function findInputByLabelText(labelText) {
    return [...document.querySelectorAll('label')].reduce((found, label) => {
      if (found) return found;
      if (label.textContent.trim() === labelText.trim()) {
        return label.htmlFor
          ? document.getElementById(label.htmlFor)
          : label.querySelector('input, textarea, select');
      }
      return null;
    }, null);
  }

  function findButtonByText(text) {
    return [...document.querySelectorAll("button")].find(btn => btn.textContent.trim() === text);
  }

  function delay(ms) {
    return new Promise(resolve => setTimeout(resolve, ms));
  }

  function levenshtein(a, b) {
    const matrix = Array.from({ length: b.length + 1 }, (_, i) =>
      Array(a.length + 1).fill(0)
    );

    for (let i = 0; i <= b.length; i++) matrix[i][0] = i;
    for (let j = 0; j <= a.length; j++) matrix[0][j] = j;

    for (let i = 1; i <= b.length; i++) {
      for (let j = 1; j <= a.length; j++) {
        matrix[i][j] = b[i - 1] === a[j - 1]
          ? matrix[i - 1][j - 1]
          : Math.min(
              matrix[i - 1][j] + 1,
              matrix[i][j - 1] + 1,
              matrix[i - 1][j - 1] + 1
            );
      }
    }

    return matrix[b.length][a.length];
  }

  const albumTitle = document.querySelector("[class*=title]").textContent;

  for (const title of titles) {
    const input = findInputByLabelText("YouTube search query:");
    setNativeValue(input, `${albumTitle} ${title} "provided"`);
    input.dispatchEvent(new Event("input", { bubbles: true }));
    findButtonByText("Search")?.click();
    await delay(1000);

    //const videos = await new Promise(resolve => {
    //  (function update() {
    //    const videos =
    //      [...document.querySelectorAll("[class*='results'] li")];
    //
    //    if (videos.length) {
    //      return resolve(videos);
    //    }
    //
    //    requestAnimationFrame(update);
    //  })();
    //});
    const videos = [...document.querySelectorAll("[class*='results'] li")];
    let bestMatch = null;
    let minDistance = Infinity;

    for (const video of videos) {
      const link = video.querySelector("a");
      const resultTitle = link.textContent.trim();
      const dist = levenshtein(title.toLowerCase(), resultTitle.toLowerCase());

      if (dist < minDistance) {
        minDistance = dist;
        bestMatch = video;
      }
    }

    if (bestMatch) {
      findButtonByText("Add")?.click();
    }
  }
})();