Height: ${height.toFixed(1)} ${unit}

Actual Weight: ${actualWeight.toFixed(1)} kg

Unit: ${unitDisplay}

Volumetric Weight: ${volumetricWeight.toFixed(1)} kg

Chargeable Weight: ${chargeableWeight.toFixed(1)} kg

`; resultSection.innerHTML = resultText; resultSection.style.display = 'block'; pdfButton.disabled = false; }; const downloadPDF = () => { if (!currentResults.unit || !resultSection.innerText) { errorMessage.textContent = 'No results available to download.'; errorMessage.style.display = 'block'; return; } try { const { jsPDF } = window.jspdf; if (!jsPDF) { console.error('jsPDF is not loaded.'); errorMessage.textContent = 'PDF generation failed. Please try again.'; errorMessage.style.display = 'block'; return; } const doc = new jsPDF(); doc.setFont('helvetica', 'bold'); doc.setFontSize(16); doc.text('Air Cargo Volumetric Weight Calculator', 20, 20); doc.setLineWidth(0.5); doc.line(20, 25, 190, 25); doc.setFont('helvetica', 'normal'); doc.setFontSize(12); doc.text(`Length: ${currentResults.length.toFixed(1)} ${currentResults.unit}`, 20, 40); doc.text(`Width: ${currentResults.width.toFixed(1)} ${currentResults.unit}`, 20, 50); doc.text(`Height: ${currentResults.height.toFixed(1)} ${currentResults.unit}`, 20, 60); doc.text(`Actual Weight: ${currentResults.actualWeight.toFixed(1)} kg`, 20, 70); doc.text(`Unit: ${currentResults.unit === 'cm' ? 'Centimeters' : 'Inches'}`, 20, 80); doc.text(`Volumetric Weight: ${currentResults.volumetricWeight.toFixed(1)} kg`, 20, 90); doc.text(`Chargeable Weight: ${currentResults.chargeableWeight.toFixed(1)} kg`, 20, 100); doc.setDrawColor(200); doc.rect(15, 35, 180, 70); doc.save('volumetric_weight.pdf'); } catch (error) { console.error('PDF generation error:', error); errorMessage.textContent = 'Failed to generate PDF. Please try again.'; errorMessage.style.display = 'block'; } }; const resetForm = () => { converterForm.reset(); resultSection.innerHTML = ''; resultSection.style.display = 'none'; errorMessage.style.display = 'none'; pdfButton.disabled = true; currentResults = { length: 0, width: 0, height: 0, actualWeight: 0, unit: '', volumetricWeight: 0, chargeableWeight: 0 }; lengthInput.focus(); }; convertButton.addEventListener('click', calculateVolumetricWeight); resetButton.addEventListener('click', resetForm); pdfButton.addEventListener('click', downloadPDF); converterForm.addEventListener('submit', (e) => { e.preventDefault(); calculateVolumetricWeight(); }); }); })();