Easy SampleFocus℠ Downloader

Allows downloading from samplefocus.com without tokens.
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// ==UserScript==
// @name Easy SampleFocus℠ Downloader
// @description Allows downloading from samplefocus.com without tokens.
// @description:ar Allows downloading from samplefocus.com without tokens.
// @description:bg Allows downloading from samplefocus.com without tokens.
// @description:cs Allows downloading from samplefocus.com without tokens.
// @description:da Allows downloading from samplefocus.com without tokens.
// @description:de Allows downloading from samplefocus.com without tokens.
// @description:el Allows downloading from samplefocus.com without tokens.
// @description:eo Allows downloading from samplefocus.com without tokens.
// @description:es Allows downloading from samplefocus.com without tokens.
// @description:fi Allows downloading from samplefocus.com without tokens.
// @description:fr Allows downloading from samplefocus.com without tokens.
// @description:fr-CA Allows downloading from samplefocus.com without tokens.
// @description:he Allows downloading from samplefocus.com without tokens.
// @description:hu Allows downloading from samplefocus.com without tokens.
// @description:id Allows downloading from samplefocus.com without tokens.
// @description:it Allows downloading from samplefocus.com without tokens.
// @description:ja Allows downloading from samplefocus.com without tokens.
// @description:ko Allows downloading from samplefocus.com without tokens.
// @description:nb Allows downloading from samplefocus.com without tokens.
// @description:nl Allows downloading from samplefocus.com without tokens.
// @description:pl Allows downloading from samplefocus.com without tokens.
// @description:ro Allows downloading from samplefocus.com without tokens.
// @description:ru Allows downloading from samplefocus.com without tokens.
// @description:sk Allows downloading from samplefocus.com without tokens.
// @description:sr Allows downloading from samplefocus.com without tokens.
// @description:sv Allows downloading from samplefocus.com without tokens.
// @description:th Allows downloading from samplefocus.com without tokens.
// @description:tr Allows downloading from samplefocus.com without tokens.
// @description:uk Allows downloading from samplefocus.com without tokens.
// @description:ug Allows downloading from samplefocus.com without tokens.
// @description:vi Allows downloading from samplefocus.com without tokens.
// @description:zh-CN Allows downloading from samplefocus.com without tokens.
// @description:zh-TW Allows downloading from samplefocus.com without tokens.
// @namespace   https://greasyfork.org/users/1627591
// @author Luftin
// @date 2026-07-25
// @version     1.0.0
// @match       https://samplefocus.com/samples/*
// @grant       none
// @license MIT
// ==/UserScript==

async function downloadFileFromUrl(downloadUrl, name) {
    try {
        const response = await fetch(downloadUrl);

        if (!response.ok) {
            throw new Error("Failed to download file");
        }

        const blob = await response.blob();
        const blobUrl = URL.createObjectURL(blob);

        const a = document.createElement("a");
        a.href = blobUrl;
        a.download = name;

        document.body.appendChild(a);
        a.click();
        a.remove();

        URL.revokeObjectURL(blobUrl);
    } catch (err) {
        console.error(err);
    }
}


function whitespaceToUnderscore(text) {
  return text.replace(/\s/g, "_");
}

async function loaded() {
  console.log("Loaded")

  const allE = document.querySelectorAll("script[type='application/ld+json']");

  allE.forEach((e) => {
    const string = e.innerText.toString();
    let obj = null;
    try{
      obj = JSON.parse(string);
    }catch(e){
      // console.debug("Parsing did not work on", string);
    }

    if(obj && obj.contentUrl){
      const downloadUrl = obj.contentUrl;

      let bpm = null;
      let key = null;
      let sample_name = whitespaceToUnderscore(document.querySelector(".MuiGrid-root.MuiGrid-item.MuiGrid-grid-xs-12.MuiGrid-grid-sm-6.MuiGrid-grid-md-6.MuiGrid-grid-lg-6").children[0].innerText);

      const attributes = document.querySelector("ul.sample-attrs");

      attributes.childNodes.forEach((node) => {
        const attribute = node.children[0].className;
        if (attribute.includes("fa-music")){
          key = whitespaceToUnderscore(node.innerText)
        }

        if (attribute.includes("fa-ellipsis")){
          bpm = whitespaceToUnderscore(node.innerText)
        }
      })

      const fileName = `${sample_name}${bpm ? "_" + bpm : ""}${key ? "_" + key : ""}`;

      async function handleDownloadClick(event) {
          downloadFileFromUrl(downloadUrl, fileName);
      }

      const originalDownloadButton = document.querySelector("*[aria-label='Download'].MuiButton-fullWidth");
      originalDownloadButton.setAttribute("style", "--variant-containedBg: #74be41");
      originalDownloadButton.innerText = "Download";
      console.log(originalDownloadButton);

      originalDownloadButton.addEventListener("click", (e) => {
        e.preventDefault();
        e.stopPropagation();
        e.stopImmediatePropagation();
        handleDownloadClick(e)
      }, true)
    }
  });
}


window.addEventListener('load', () => {
  setTimeout(loaded, 500);
});