Elsevier Article PDF Exporter

1// ==UserScript==
2// @name		Elsevier Article PDF Exporter
3// @description		Export Elsevier inspection copy articles to PDF
4// @version		1.1.1
5// @match		https://*.inspectioncopy.elsevier.com/*
6// @icon		https://www.inspectioncopy.elsevier.com/favicon.ico
7// @require		https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js
8// @require		https://cdnjs.cloudflare.com/ajax/libs/html2canvas/1.4.1/html2canvas.min.js
9// ==/UserScript==
10(function() {
11    'use strict';
12
13    console.log('Elsevier PDF Exporter loaded');
14
15    // Wait for page to load
16    function init() {
17        console.log('Initializing PDF exporter');
18        
19        // Check if we're on a book reading page
20        if (window.location.pathname.includes('/read/')) {
21            createExportButton();
22        }
23    }
24
25    function createExportButton() {
26        console.log('Creating export button');
27        
28        // Create a floating export button
29        const exportBtn = document.createElement('button');
30        exportBtn.id = 'elsevier-pdf-export-btn';
31        exportBtn.innerHTML = '📄 Export to PDF';
32        exportBtn.style.cssText = `
33            position: fixed;
34            top: 20px;
35            right: 20px;
36            z-index: 999999;
37            padding: 12px 24px;
38            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
39            color: white;
40            border: none;
41            border-radius: 8px;
42            font-size: 14px;
43            font-weight: 600;
44            cursor: pointer;
45            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
46            transition: all 0.3s ease;
47            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
48        `;
49        
50        // Hover effect
51        exportBtn.onmouseenter = () => {
52            exportBtn.style.transform = 'translateY(-2px)';
53            exportBtn.style.boxShadow = '0 6px 20px rgba(0, 0, 0, 0.3)';
54        };
55        exportBtn.onmouseleave = () => {
56            exportBtn.style.transform = 'translateY(0)';
57            exportBtn.style.boxShadow = '0 4px 15px rgba(0, 0, 0, 0.2)';
58        };
59        
60        exportBtn.onclick = handleExportClick;
61        
62        document.body.appendChild(exportBtn);
63        console.log('Export button added to page');
64    }
65
66    async function handleExportClick() {
67        console.log('Export button clicked');
68        
69        const btn = document.getElementById('elsevier-pdf-export-btn');
70        const originalText = btn.innerHTML;
71        
72        try {
73            btn.innerHTML = '⏳ Preparing PDF...';
74            btn.disabled = true;
75            btn.style.opacity = '0.7';
76            btn.style.cursor = 'wait';
77            
78            // Get the iframe containing the book content
79            const iframe = document.querySelector('iframe');
80            
81            if (!iframe) {
82                throw new Error('Could not find book content iframe');
83            }
84            
85            // Get book title from page
86            const pageTitle = document.getElementById('page-title')?.value || 'Elsevier Article';
87            const bookTitle = document.title || pageTitle;
88            
89            console.log('Capturing content for:', bookTitle);
90            
91            // Since the content is in an iframe from a different domain (Calameo),
92            // we'll capture the visible viewport
93            btn.innerHTML = '📸 Capturing content...';
94            
95            const canvas = await html2canvas(document.body, {
96                allowTaint: true,
97                useCORS: true,
98                scale: 2,
99                logging: false,
100                backgroundColor: '#ffffff'
101            });
102            
103            btn.innerHTML = '📝 Generating PDF...';
104            
105            // Create PDF
106            const { jsPDF } = window.jspdf;
107            const pdf = new jsPDF({
108                orientation: 'portrait',
109                unit: 'mm',
110                format: 'a4'
111            });
112            
113            const imgData = canvas.toDataURL('image/png');
114            const pdfWidth = pdf.internal.pageSize.getWidth();
115            const pdfHeight = pdf.internal.pageSize.getHeight();
116            
117            // Calculate dimensions to fit the page
118            const imgWidth = pdfWidth;
119            const imgHeight = (canvas.height * pdfWidth) / canvas.width;
120            
121            pdf.addImage(imgData, 'PNG', 0, 0, imgWidth, imgHeight);
122            
123            // Generate filename
124            const filename = `${bookTitle.replace(/[^a-z0-9]/gi, '_')}_export.pdf`;
125            
126            btn.innerHTML = '💾 Downloading...';
127            
128            // Save the PDF
129            pdf.save(filename);
130            
131            console.log('PDF exported successfully:', filename);
132            
133            // Success feedback
134            btn.innerHTML = '✅ Downloaded!';
135            btn.style.background = 'linear-gradient(135deg, #11998e 0%, #38ef7d 100%)';
136            
137            setTimeout(() => {
138                btn.innerHTML = originalText;
139                btn.style.background = 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)';
140                btn.disabled = false;
141                btn.style.opacity = '1';
142                btn.style.cursor = 'pointer';
143            }, 2000);
144            
145        } catch (error) {
146            console.error('Error exporting PDF:', error);
147            
148            btn.innerHTML = '❌ Export Failed';
149            btn.style.background = 'linear-gradient(135deg, #eb3349 0%, #f45c43 100%)';
150            
151            setTimeout(() => {
152                btn.innerHTML = originalText;
153                btn.style.background = 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)';
154                btn.disabled = false;
155                btn.style.opacity = '1';
156                btn.style.cursor = 'pointer';
157            }, 3000);
158            
159            alert('Failed to export PDF. Please try again or check the console for details.');
160        }
161    }
162
163    // Initialize when DOM is ready
164    if (document.readyState === 'loading') {
165        document.addEventListener('DOMContentLoaded', init);
166    } else {
167        init();
168    }
169})();