Project Parameters

Project Name

Analysis Period (Years)

Discount Rate (%)

Investment Costs

One-Time Costs

Recurring Costs (Annual)

Project Benefits

One-Time Benefits

Recurring Benefits (Annual)

Analysis Results

Cumulative Net Value Over Time

${kpi.value}

`).join(''); renderChart(results.chartData); } function renderChart(data) { const ctx = document.getElementById('analysis-chart').getContext('2d'); if (analysisChart) analysisChart.destroy(); analysisChart = new Chart(ctx, { type: 'line', data: { labels: data.labels, datasets: [{ label: 'Cumulative Net Value', data: data.values, borderColor: '#16a34a', backgroundColor: 'rgba(22, 163, 74, 0.1)', fill: true, tension: 0.1 }] }, options: { scales: { y: { ticks: { callback: (value) => '$' + value.toLocaleString() } } } } }); } // --- PDF GENERATION --- async function generatePdfReport() { downloadPdfBtn.disabled = true; downloadPdfBtn.textContent = 'Generating...'; const results = performAnalysis(); const chartImg = analysisChart.toBase64Image(); const createTable = (title, data) => { const rows = data.map(item => `${item.name}$${item.value.toLocaleString()}`).join(''); const total = data.reduce((sum, i) => sum + i.value, 0); return `

${title}

${rows}

Item	Value
Total	$${total.toLocaleString()}

`; }; const costsHtml = createTable('One-Time Costs', analysisData.oneTimeCosts) + createTable('Annual Recurring Costs', analysisData.recurringCosts); const benefitsHtml = createTable('One-Time Benefits', analysisData.oneTimeBenefits) + createTable('Annual Recurring Benefits', analysisData.recurringBenefits); const reportHtml = `

Cost-Benefit Analysis Report

${analysisData.projectName}

Executive Summary

Return on Investment (ROI)

${results.roi.toFixed(2)}%

Net Present Value (NPV)

$${results.npv.toLocaleString()}

Payback Period

${typeof results.paybackPeriod === 'number' ? results.paybackPeriod.toFixed(2) + ' Years' : 'N/A'}

Total Net Benefit

$${(results.totalBenefits - results.totalCosts).toLocaleString()}

Cumulative Net Value Forecast

${costsHtml} ${benefitsHtml}

`; const pdfTemplate = document.getElementById('pdf-template'); pdfTemplate.innerHTML = reportHtml; pdfTemplate.classList.remove('invisible'); try { const { jsPDF } = window.jspdf; const canvas = await html2canvas(pdfTemplate.querySelector('.pdf-report-container'), { scale: 2 }); const imgData = canvas.toDataURL('image/png'); const pdf = new jsPDF({ orientation: 'p', unit: 'pt', format: 'a4' }); const pdfWidth = pdf.internal.pageSize.getWidth(); const pdfHeight = (canvas.height * pdfWidth) / canvas.width; pdf.addImage(imgData, 'PNG', 0, 0, pdfWidth, pdfHeight); pdf.save(`${analysisData.projectName.replace(/\s+/g, '_')}_CBA_Report.pdf`); } catch(e) { console.error('PDF Generation Error:', e); } finally { downloadPdfBtn.disabled = false; downloadPdfBtn.textContent = 'Download Analysis Report'; pdfTemplate.classList.add('invisible'); } } downloadPdfBtn.addEventListener('click', generatePdfReport); // --- INITIALIZATION --- populateProjectInputs(); renderLists(); switchTab(0); });