Adds a button to download all files in a Simfileshare folder as a zip file and individual download buttons
当前为
// ==UserScript==
// @name Simfileshare Folder Downloader
// @namespace https://github.com/dear-clouds/mio-userscripts
// @version 1.0
// @description Adds a button to download all files in a Simfileshare folder as a zip file and individual download buttons
// @author Mio.
// @supportURL https://github.com/dear-clouds/mio-userscripts/issues
// @match https://simfileshare.net/folder/*
// @grant none
// @license MIT
// @require https://cdnjs.cloudflare.com/ajax/libs/jszip/3.7.1/jszip.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/FileSaver.js/2.0.5/FileSaver.min.js
// ==/UserScript==
(function() {
'use strict';
window.addEventListener('load', () => {
const MAX_CONCURRENT_DOWNLOADS = 8; // Control how many files to download concurrently here
// console.log('Page loaded, initializing script...');
// Button Download All
const downloadAllButton = document.createElement('button');
downloadAllButton.innerHTML = 'Download All Files as ZIP';
const loaderSpanAll = document.createElement('span');
loaderSpanAll.className = 'loader';
loaderSpanAll.style.display = 'none';
downloadAllButton.appendChild(loaderSpanAll);
downloadAllButton.style.padding = '10px';
downloadAllButton.style.backgroundColor = '#4CAF50';
downloadAllButton.style.color = 'white';
downloadAllButton.style.border = 'none';
downloadAllButton.style.cursor = 'pointer';
downloadAllButton.style.marginBottom = '10px';
downloadAllButton.style.position = 'relative';
const h4Element = document.querySelector('h4');
if (h4Element) {
h4Element.parentNode.insertBefore(downloadAllButton, h4Element.nextSibling);
// console.log('Download All button appended successfully');
}
const loaderStyle = document.createElement('style');
loaderStyle.innerHTML = `
.loader {
border: 4px solid #f3f3f3;
border-top: 4px solid #3498db;
border-radius: 50%;
width: 16px;
height: 16px;
animation: spin 1s linear infinite;
position: relative;
margin-left: 10px;
}
@keyframes spin {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}
.dl-button {
margin-left: 10px;
padding: 4px 8px;
background-color: #3498db;
color: white;
border: none;
cursor: pointer;
font-size: 0.9em;
position: relative;
}
`;
document.head.appendChild(loaderStyle);
// console.log('Loader styles added');
downloadAllButton.addEventListener('click', async () => {
console.log('Download All button clicked');
// Get all the download links in the folder
const downloadLinks = document.querySelectorAll('a[href*="/download/"]');
console.log(`Found ${downloadLinks.length} download links`);
if (downloadLinks.length === 0) {
alert('No files found to download!');
return;
}
loaderSpanAll.style.display = 'inline-block';
// console.log('Loader displayed for Download All button');
// Create a ZIP file with JSZip
const zip = new JSZip();
const folderTitle = h4Element.textContent.replace('Folder: ', '').trim();
console.log(`Folder title determined: ${folderTitle}`);
// Function to fetch files with retries and concurrency limit
const fetchFileWithRetry = async (url, retries = 20) => {
for (let attempt = 0; attempt < retries; attempt++) {
try {
const directUrl = url.replace('/download/', '/cdn/download/') + '/?dl';
console.log(`Fetching: ${directUrl} (Attempt ${attempt + 1})`);
const response = await fetch(directUrl);
if (response.ok) {
console.log(`Successfully fetched: ${directUrl}`);
return await response.blob();
} else {
console.warn(`Attempt ${attempt + 1} failed: ${response.statusText}`);
}
} catch (error) {
console.warn(`Attempt ${attempt + 1} failed: ${error.message}`);
}
await new Promise(resolve => setTimeout(resolve, 1000)); // Wait before retrying
}
throw new Error(`Failed to fetch file after ${retries} attempts: ${url}`);
};
// Concurrency limiting function
const limitConcurrency = async (limit, tasks) => {
const results = [];
const executing = [];
for (const task of tasks) {
const p = task().then(result => {
executing.splice(executing.indexOf(p), 1);
return result;
});
results.push(p);
executing.push(p);
if (executing.length >= limit) {
await Promise.race(executing);
}
}
return Promise.all(results);
};
// Prepare a list of tasks to fetch each file
const tasks = Array.from(downloadLinks).map(link => async () => {
try {
console.log(`Preparing to fetch file: ${link.href}`);
const blob = await fetchFileWithRetry(link.href);
const filename = link.textContent.trim() || `file_${Math.random().toString(36).substring(7)}`;
console.log(`Adding file to ZIP: ${filename}`);
zip.file(filename, blob);
} catch (error) {
console.error(error.message);
}
});
// Run tasks with controlled concurrency
await limitConcurrency(MAX_CONCURRENT_DOWNLOADS, tasks);
// console.log('All files fetched, generating ZIP');
// Generate ZIP and trigger download
zip.generateAsync({ type: "blob" }).then(content => {
saveAs(content, `${folderTitle}.zip`);
loaderSpanAll.style.display = 'none';
console.log('ZIP generated and download triggered');
}).catch(error => {
console.error('Error generating ZIP:', error);
loaderSpanAll.style.display = 'none';
alert('Error occurred while generating ZIP.');
});
});
// Add individual download buttons next to each file link
const fileLinks = document.querySelectorAll('tr td a[href*="/download/"]');
fileLinks.forEach(link => {
const dlButton = document.createElement('button');
dlButton.innerHTML = 'DL';
const loaderSpan = document.createElement('span');
loaderSpan.className = 'loader';
loaderSpan.style.display = 'none';
dlButton.appendChild(loaderSpan);
dlButton.className = 'dl-button';
dlButton.addEventListener('click', async (e) => {
e.preventDefault();
console.log(`Individual download button clicked for link: ${link.href}`);
loaderSpan.style.display = 'inline-block';
// console.log('Loader displayed for individual download button');
try {
// First visit the link to prepare the direct download
await fetch(link.href, { method: 'GET', mode: 'no-cors' });
const directUrl = link.href.replace('/download/', '/cdn/download/') + '/?dl';
console.log(`Fetching direct URL: ${directUrl}`);
const response = await fetch(directUrl);
if (!response.ok) {
throw new Error(`Failed to download: ${response.statusText}`);
}
const blob = await response.blob();
const filename = link.textContent.trim();
console.log(`Successfully downloaded file: ${filename}`);
const a = document.createElement('a');
a.href = URL.createObjectURL(blob);
a.download = filename;
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
console.log(`File download triggered: ${filename}`);
} catch (error) {
console.error('Error downloading file:', error);
alert(`Error downloading file: ${link.textContent.trim()}`);
} finally {
loaderSpan.style.display = 'none';
// console.log('Loader hidden for individual download button');
}
});
link.parentNode.appendChild(dlButton);
// console.log('DL button appended for link:', link.textContent);
});
});
})();