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Download GP files with "Artist - Title (ID)" filenames.
// ==UserScript==
// @name TabGrabberr
// @namespace https://github.com/Zhiro90
// @version 1.0
// @description Download GP files with "Artist - Title (ID)" filenames.
// @author Zhiro90
// @match https://www.songsterr.com/a/wsa/*
// @icon https://www.songsterr.com/favicon.ico
// @homepageURL https://github.com/Zhiro90/tabgrabberr
// @supportURL https://github.com/Zhiro90/tabgrabberr/issues
// @license MIT
// @grant none
// ==/UserScript==
(function() {
'use strict';
// 1. Create the floating button
const btn = document.createElement('button');
btn.innerText = 'Download GP';
btn.style.position = 'fixed';
btn.style.bottom = '20px';
btn.style.right = '20px';
btn.style.zIndex = '9999';
btn.style.padding = '10px 20px';
btn.style.backgroundColor = '#C7254E';
btn.style.color = 'white';
btn.style.border = 'none';
btn.style.borderRadius = '5px';
btn.style.cursor = 'pointer';
btn.style.fontWeight = 'bold';
btn.style.boxShadow = '0 2px 5px rgba(0,0,0,0.3)';
document.body.appendChild(btn);
// Helper: Sanitize filenames (remove illegal chars like / : * ? " < > |)
function sanitizeFilename(name) {
return name.replace(/[<>:"/\\|?*]/g, '').trim();
}
// 2. Define the click handler
btn.addEventListener('click', async () => {
const originalText = btn.innerText;
btn.innerText = 'Scanning...';
btn.disabled = true;
try {
// STEP A: Fetch the CURRENT page source freshly (SPA Fix)
const currentUrl = window.location.href;
const pageResponse = await fetch(currentUrl);
if (!pageResponse.ok) throw new Error("Could not fetch page data.");
const htmlText = await pageResponse.text();
// STEP B: Parse the fetched HTML
const parser = new DOMParser();
const doc = parser.parseFromString(htmlText, "text/html");
const stateScript = doc.getElementById('state');
if (!stateScript) throw new Error("State data not found.");
// STEP C: Parse JSON & Extract Info
const stateData = JSON.parse(stateScript.textContent);
const currentData = stateData?.meta?.current;
const revisionId = currentData?.revisionId;
const songId = currentData?.songId;
const artist = currentData?.artist || "Unknown Artist";
const title = currentData?.title || "Unknown Song";
if (!revisionId) throw new Error("Could not find revisionId.");
console.log(`Found: ${artist} - ${title} (ID: ${songId})`);
btn.innerText = 'Getting Link...';
// STEP D: Call API for the Download Link
const apiResponse = await fetch(`https://www.songsterr.com/api/revision/${revisionId}`);
if (!apiResponse.ok) throw new Error(`API Error: ${apiResponse.status}`);
const apiJson = await apiResponse.json();
const downloadUrl = apiJson.source;
if (!downloadUrl) throw new Error("No GP file source found.");
// STEP E: Construct Filename
// Get extension from URL (usually .gp, .gp5, .gpx) or default to .gp
const ext = downloadUrl.split('.').pop() || 'gp';
const cleanArtist = sanitizeFilename(artist);
const cleanTitle = sanitizeFilename(title);
const filename = `${cleanArtist} - ${cleanTitle} (${songId}).${ext}`;
btn.innerText = 'Downloading...';
// STEP F: Fetch File as Blob (Required for Renaming)
const fileResponse = await fetch(downloadUrl);
if (!fileResponse.ok) throw new Error("Download failed (CORS/Network).");
const blob = await fileResponse.blob();
const blobUrl = URL.createObjectURL(blob);
// STEP G: Trigger Save
const link = document.createElement('a');
link.href = blobUrl;
link.setAttribute('download', filename);
document.body.appendChild(link);
link.click();
// Cleanup
document.body.removeChild(link);
URL.revokeObjectURL(blobUrl);
btn.innerText = 'Success!';
} catch (error) {
console.error(error);
alert(`Error: ${error.message}`);
btn.innerText = 'Error';
} finally {
setTimeout(() => {
btn.innerText = originalText;
btn.disabled = false;
}, 3000);
}
});
})();