Total Revenue
${formatCurrency(totalRevenue)}
Net Profit
${formatCurrency(totalProfit)}
Overall Margin
${overallMargin.toFixed(1)}%
Top Product
${topProfitProduct ? topProfitProduct.name : 'N/A'}
Profit Contribution by Product
| Product | Sales Volume | Revenue | Gross Profit | Margin |
${tableRows}
`;
renderProfitChart(products);
document.getElementById('download-pdf-btn').addEventListener('click', generatePdf);
};
const renderProfitChart = (products) => {
const ctx = document.getElementById('profit-chart').getContext('2d');
if (charts.profit) charts.profit.destroy();
charts.profit = new Chart(ctx, {
type: 'bar',
data: {
labels: products.map(p => p.name),
datasets: [{ label: 'Gross Profit', data: products.map(p => p.grossProfit), backgroundColor: '#16a34a' }]
},
options: { responsive: true, maintainAspectRatio: false, plugins: { legend: { display: false } }, scales: { y: { beginAtZero: true, ticks: { callback: (v) => formatCurrency(v) } } } }
});
};
const renderDataConfig = () => {
const configContent = document.getElementById('content-data-configuration');
if (!configContent) return;
const productRows = appData.products.map(p => `
|
|
|
|
|
|
`).join('');
configContent.innerHTML = `
Product & Sales Data
| Name | Volume | COGS ($) | Shipping ($) | Price ($) | |
${productRows}
`;
lucide.createIcons();
attachConfigListeners();
};
// --- EVENT HANDLERS & LOGIC ---
const attachConfigListeners = () => {
const handler = () => {
document.querySelectorAll('.config-input').forEach(input => {
const id = parseInt(input.dataset.id);
const field = input.dataset.field;
const value = input.type === 'number' ? parseFloat(input.value) || 0 : input.value;
const product = appData.products.find(p => p.id === id);
if (product) product[field] = value;
});
document.querySelectorAll('.config-input-general').forEach(input => {
const field = input.dataset.field;
appData.config[field] = parseFloat(input.value) || 0;
});
appData.analysisResults = null;
renderDashboard();
};
document.querySelectorAll('.config-input, .config-input-general').forEach(input => input.addEventListener('change', handler));
document.querySelectorAll('.remove-product-btn').forEach(btn => btn.addEventListener('click', e => {
const id = parseInt(e.currentTarget.dataset.id);
appData.products = appData.products.filter(p => p.id !== id);
appData.analysisResults = null;
renderDataConfig();
renderDashboard();
}));
document.getElementById('add-product-btn').addEventListener('click', () => {
const newId = appData.products.length > 0 ? Math.max(...appData.products.map(p => p.id)) + 1 : 1;
appData.products.push({ id: newId, name: 'New Product', salesVolume: 0, cogs: 10, shipping: 5, price: 30 });
renderDataConfig();
});
};
const generatePdf = () => {
loadingOverlay.style.display = 'flex';
const { jsPDF } = window.jspdf;
document.getElementById('pdf-generated-date').textContent = new Date().toLocaleString();
const pdfHeader = document.getElementById('pdf-header');
pdfHeader.classList.remove('hidden');
const fullContent = document.getElementById('pdf-content-area');
html2canvas(fullContent, { scale: 2, useCORS: true, logging: false, windowWidth: 1200 })
.then(canvas => {
pdfHeader.classList.add('hidden');
const imgData = canvas.toDataURL('image/jpeg', 0.9);
const pdf = new jsPDF({ orientation: 'landscape', unit: 'px', format: 'a4' });
const pdfWidth = pdf.internal.pageSize.getWidth();
const imgProps = pdf.getImageProperties(imgData);
const imgHeight = (imgProps.height * pdfWidth) / imgProps.width;
pdf.addImage(imgData, 'JPEG', 0, 0, pdfWidth, imgHeight);
pdf.save('E-commerce-Profitability-Report.pdf');
loadingOverlay.style.display = 'none';
}).catch(err => {
console.error("PDF generation failed:", err);
pdfHeader.classList.add('hidden');
loadingOverlay.style.display = 'none';
alert('An error occurred generating the PDF.');
});
};
// --- TAB NAVIGATION & INITIALIZATION ---
const switchTab = (tabIndex) => {
activeTabIndex = tabIndex;
document.querySelectorAll('.tab-btn').forEach((btn, i) => btn.classList.toggle('active', i === tabIndex));
document.querySelectorAll('.tab-content').forEach((content, i) => content.classList.toggle('hidden', i !== tabIndex));
updateNavButtons();
};
const updateNavButtons = () => {
prevTabBtn.disabled = activeTabIndex === 0;
nextTabBtn.disabled = activeTabIndex === tabIdentifiers.length - 1;
};
const initializeUI = () => {
const tabs = [
{ name: 'Profitability Dashboard', id: 'profit-dashboard' },
{ name: 'Data Configuration', id: 'data-configuration' }
];
tabIdentifiers = tabs.map(t => t.id);
tabsContainer.innerHTML = tabs.map(tab => `
`).join('');
mainContent.innerHTML = tabs.map(tab => `
`).join('');
tabs.forEach((tab, index) => {
document.getElementById(`tab-${tab.id}`).addEventListener('click', () => switchTab(index));
});
renderDashboard();
renderDataConfig();
switchTab(0);
};
initializeUI();
prevTabBtn.addEventListener('click', () => { if (activeTabIndex > 0) switchTab(activeTabIndex - 1); });
nextTabBtn.addEventListener('click', () => { if (activeTabIndex < tabIdentifiers.length - 1) switchTab(activeTabIndex + 1); });
});
