// ==UserScript== // @name PDF Downloader for Dr Najeeb Lectures // @description Automatically downloads PDF files from course pages // @version 1.2.3 // @match https://*.members.drnajeeblectures.com/* // @icon https://members.drnajeeblectures.com/favicon.ico // @grant GM.xmlhttpRequest // @require https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js // ==/UserScript== (function() { 'use strict'; console.log('PDF Downloader extension loaded'); // Function to capture all pages and create PDF async function captureAndDownloadPDF(filename) { console.log('Starting PDF capture process...'); try { const iframe = document.querySelector('#text iframe'); if (!iframe) { alert('PDF viewer not found'); return; } const iframeDoc = iframe.contentDocument || iframe.contentWindow.document; const canvas = iframeDoc.querySelector('canvas'); const pageCountEl = iframeDoc.querySelector('#page_count'); const pageNumInput = iframeDoc.querySelector('#page_num'); const nextBtn = iframeDoc.querySelector('#next'); if (!canvas || !pageCountEl || !pageNumInput || !nextBtn) { alert('Could not access PDF viewer elements'); return; } const totalPages = parseInt(pageCountEl.textContent); console.log('Total pages to capture:', totalPages); // Make sure we start from page 1 pageNumInput.value = 1; const changeEvent = new Event('change', { bubbles: true }); pageNumInput.dispatchEvent(changeEvent); await new Promise(resolve => setTimeout(resolve, 2000)); // Create new PDF document const { jsPDF } = window.jspdf; const pdf = new jsPDF({ orientation: canvas.height > canvas.width ? 'portrait' : 'landscape', unit: 'px', format: [canvas.width, canvas.height] }); // Capture each page for (let pageNum = 1; pageNum <= totalPages; pageNum++) { console.log(`Capturing page ${pageNum}/${totalPages}...`); // Wait for page to render await new Promise(resolve => setTimeout(resolve, 1500)); // Capture canvas as image in high quality PNG const imgData = canvas.toDataURL('image/png', 1.0); // Add page to PDF (first page is already created) if (pageNum > 1) { pdf.addPage([canvas.width, canvas.height]); } pdf.addImage(imgData, 'PNG', 0, 0, canvas.width, canvas.height); console.log(`Page ${pageNum} captured`); // Navigate to next page (if not last page) if (pageNum < totalPages) { nextBtn.click(); console.log('Clicked next button'); } } // Save the PDF console.log('Saving PDF...'); pdf.save(filename); console.log('PDF saved successfully!'); // Reset to first page pageNumInput.value = 1; pageNumInput.dispatchEvent(new Event('change', { bubbles: true })); } catch (error) { console.error('Error creating PDF:', error); alert('Failed to create PDF: ' + error.message); } } // Function to extract course name for filename function getCourseName() { const titleElement = document.querySelector('h3.text-ellipsis'); if (titleElement) { return titleElement.textContent.trim().replace(/[^a-z0-9]/gi, '_').substring(0, 50); } return 'course_notes'; } // Function to create download button function createDownloadButton() { const iframe = document.querySelector('#text iframe'); if (!iframe) { console.log('No PDF iframe found on this page'); return; } const buttonContainer = document.querySelector('.s-title .column.col-7'); if (!buttonContainer) { console.log('Button container not found'); return; } // Check if button already exists if (document.getElementById('pdfDownloadBtn')) { console.log('Download button already exists'); return; } // Create download button const downloadBtn = document.createElement('button'); downloadBtn.id = 'pdfDownloadBtn'; downloadBtn.className = 'btn btn-link courseNavBtn'; downloadBtn.innerHTML = ` Download PDF `; downloadBtn.style.cssText = ` color: rgb(87, 85, 217); padding: 7px 8px; font-size: 16px; font-family: Inter, sans-serif; border: none; background: transparent; cursor: pointer; margin-right: 10px; `; // Add hover effect downloadBtn.addEventListener('mouseenter', () => { downloadBtn.style.opacity = '0.7'; }); downloadBtn.addEventListener('mouseleave', () => { downloadBtn.style.opacity = '1'; }); // Add click handler downloadBtn.addEventListener('click', async () => { downloadBtn.disabled = true; downloadBtn.innerHTML = ` Creating PDF... `; const courseName = getCourseName(); const filename = `${courseName}.pdf`; await captureAndDownloadPDF(filename); // Reset button after download setTimeout(() => { downloadBtn.disabled = false; downloadBtn.innerHTML = ` Download PDF `; }, 1000); }); // Insert button before the "Previous" button const prevButton = document.getElementById('prevCourseItemBtn'); buttonContainer.insertBefore(downloadBtn, prevButton); console.log('Download button added successfully'); } // Wait for page to load and add button function init() { console.log('Initializing PDF downloader...'); // Wait for the page to fully load setTimeout(() => { createDownloadButton(); }, 2000); } // Run when page is ready if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', init); } else { init(); } })();

PDF Downloader for Dr Najeeb Lectures

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