Initial Price: $${params.S0.toFixed(2)}

Time Horizon: ${params.T} Days

Annual Return: ${(params.mu * 100).toFixed(2)}%

Annual Volatility: ${(params.sigma * 100).toFixed(2)}%

Simulations: ${params.numSims}

`; const stats = lastSimulationData.stats; document.getElementById('pdf-stats').innerHTML = `

Average Price: $${stats.average.toFixed(2)}

Median Price: $${stats.median.toFixed(2)}

5th Percentile: $${stats.p5.toFixed(2)}

95th Percentile: $${stats.p95.toFixed(2)}

`; // 2. Add chart image to the PDF template const chartImgData = simulationChart.toBase64Image(); document.getElementById('pdf-chart-container').innerHTML = ``; try { // 3. Render the populated template to a canvas const canvas = await html2canvas(pdfContent, { scale: 2, // Higher resolution for better quality useCORS: true, logging: false }); // 4. Create PDF and add the canvas image const imgData = canvas.toDataURL('image/png'); const pdf = new jsPDF({ orientation: 'portrait', unit: 'pt', format: 'a4' }); const pdfWidth = pdf.internal.pageSize.getWidth(); const pdfHeight = pdf.internal.pageSize.getHeight(); const margin = 40; const contentWidth = pdfWidth - margin * 2; const imgProps = pdf.getImageProperties(imgData); const contentHeight = (imgProps.height * contentWidth) / imgProps.width; let currentHeight = contentHeight > pdfHeight - margin * 2 ? pdfHeight - margin * 2 : contentHeight; pdf.addImage(imgData, 'PNG', margin, margin, contentWidth, currentHeight); pdf.save('Quantitative_Model_Report.pdf'); } catch (error) { console.error("Failed to generate PDF:", error); alert("An error occurred while generating the PDF. Please try again."); } finally { // Clean up the PDF template document.getElementById('pdf-chart-container').innerHTML = ''; } } // --- Event Listeners --- tabs.forEach((tab, index) => { tab.btn.addEventListener('click', () => switchTab(index)); }); prevBtn.addEventListener('click', () => switchTab(currentTab - 1)); nextBtn.addEventListener('click', () => switchTab(currentTab + 1)); runSimulationBtn.addEventListener('click', runSimulation); downloadPdfBtn.addEventListener('click', handlePdfDownload); // --- Initialization --- updateNavButtons(); });