Estimated Profit
${formatCurrency(data.profit)}
Profit Margin
${data.profitMargin.toFixed(1)}%
`;
// Table
breakdownTableBody.innerHTML = data.breakdown.map(row => `
| ${row.item} |
${formatCurrency(row.value)} |
${row.note} |
`).join('');
// Add total row
breakdownTableBody.innerHTML += `
| Total Estimated Cost |
${formatCurrency(data.totalCost)} |
|
`;
document.getElementById('report-date').textContent = `Analysis generated on: ${new Date().toLocaleDateString()}`;
}
// --- Tab & Navigation Logic ---
function switchTab(targetTabId) {
if (targetTabId === 'breakdown') {
const results = calculateFees();
if (!results) return; // Stay on details tab if form is invalid
renderResults(results);
}
currentTab = targetTabId;
tabs.forEach(tab => tab.classList.toggle('active', tab.dataset.tab === currentTab));
tabContents.forEach(content => content.classList.toggle('active', content.id === currentTab));
updateNavButtons();
}
tabs.forEach(tab => tab.addEventListener('click', () => switchTab(tab.dataset.tab)));
nextBtn.addEventListener('click', () => switchTab('breakdown'));
prevBtn.addEventListener('click', () => switchTab('details'));
function updateNavButtons() {
if (currentTab === 'details') {
nextBtn.textContent = 'Calculate Fees';
prevBtn.style.display = 'none';
pdfButtonContainer.style.display = 'none';
} else {
nextBtn.textContent = 'Calculate Fees';
prevBtn.style.display = 'inline-flex';
pdfButtonContainer.style.display = 'block';
}
}
// --- PDF Download ---
downloadPdfBtn.addEventListener('click', async () => {
const { jsPDF } = window.jspdf;
const doc = new jsPDF({ orientation: 'p', unit: 'mm', format: 'a4' });
const content = document.getElementById('pdf-content');
await new Promise(resolve => setTimeout(resolve, 0)); // Allow render
doc.setFont('helvetica', 'bold');
doc.setFontSize(18);
doc.text('International Dropshipping Fee Analysis', 14, 22);
const canvas = await html2canvas(content, { scale: 2 });
const imgData = canvas.toDataURL('image/jpeg', 1.0);
const imgProps = doc.getImageProperties(imgData);
const pdfWidth = doc.internal.pageSize.getWidth() - 28;
const pdfHeight = (imgProps.height * pdfWidth) / imgProps.width;
doc.addImage(imgData, 'JPEG', 14, 30, pdfWidth, pdfHeight);
doc.save(`Dropshipping-Analysis-${new Date().toISOString().slice(0,10)}.pdf`);
});
// --- Initial Load ---
populateCountries();
switchTab('details');
});
