`;
updateCalculatorUI();
attachCalculatorListeners();
lucide.createIcons();
};
const updateCalculatorUI = () => {
// Determine calculation direction
if (calculatorState.lastEdited === 'receive') {
calculateFromReceive();
} else {
calculateFromSend();
}
// Update input fields
document.getElementById('receive-amount').value = calculatorState.receiveAmount.toFixed(2);
document.getElementById('send-amount').value = calculatorState.sendAmount.toFixed(2);
// Update results display
const resultsDisplay = document.getElementById('results-display');
if (!resultsDisplay) return;
const fee = getFeeStructure();
const feeAmount = calculatorState.sendAmount - calculatorState.receiveAmount;
resultsDisplay.innerHTML = `
Customer Pays (Gross)
${formatCurrency(calculatorState.sendAmount)}
PayPal Fee (${fee.percentage}% + ${formatCurrency(fee.fixed)})
-${formatCurrency(feeAmount)}
You Receive (Net)
${formatCurrency(calculatorState.receiveAmount)}
`;
};
const attachCalculatorListeners = () => {
const receiveInput = document.getElementById('receive-amount');
const sendInput = document.getElementById('send-amount');
const feeTypeSelect = document.getElementById('fee-type');
receiveInput.addEventListener('input', (e) => {
calculatorState.receiveAmount = parseFloat(e.target.value) || 0;
calculatorState.lastEdited = 'receive';
updateCalculatorUI();
});
sendInput.addEventListener('input', (e) => {
calculatorState.sendAmount = parseFloat(e.target.value) || 0;
calculatorState.lastEdited = 'send';
updateCalculatorUI();
});
feeTypeSelect.addEventListener('change', (e) => {
calculatorState.feeType = e.target.value;
updateCalculatorUI();
});
document.getElementById('download-pdf-btn').addEventListener('click', generatePdf);
};
const renderDataConfig = () => {
const configContent = document.getElementById('content-config');
if (!configContent) return;
const feesHtml = appData.feeStructures.map((fee, index) => `
`).join('');
configContent.innerHTML = `
Fee Configuration
`;
attachConfigListeners();
lucide.createIcons();
};
const attachConfigListeners = () => {
document.getElementById('add-fee-btn').addEventListener('click', () => {
appData.feeStructures.push({ name: 'New Fee Type', percentage: 0, fixed: 0 });
renderDataConfig();
});
document.getElementById('fees-container').addEventListener('click', e => {
const removeBtn = e.target.closest('.remove-fee-btn');
if (removeBtn && appData.feeStructures.length > 1) {
appData.feeStructures.splice(parseInt(removeBtn.dataset.index), 1);
renderDataConfig();
}
});
document.getElementById('apply-settings-btn').addEventListener('click', () => {
appData.currency = document.getElementById('default-currency').value || '$';
const newFees = [];
document.querySelectorAll('.fee-row').forEach(row => {
const name = row.querySelector('[data-prop="name"]').value;
const percentage = parseFloat(row.querySelector('[data-prop="percentage"]').value) || 0;
const fixed = parseFloat(row.querySelector('[data-prop="fixed"]').value) || 0;
if(name) newFees.push({ name, percentage, fixed });
});
appData.feeStructures = newFees;
if (!appData.feeStructures.some(f => f.name === calculatorState.feeType)) {
calculatorState.feeType = appData.feeStructures[0]?.name || '';
}
alert('Settings updated!');
renderCalculator();
});
};
const generatePdf = () => {
loadingOverlay.style.display = 'flex';
const { jsPDF } = window.jspdf;
const pdfContent = document.getElementById('pdf-content-area');
const pdfHeader = document.getElementById('pdf-header');
document.getElementById('pdf-generated-date').textContent = new Date().toLocaleDateString('en-US');
pdfHeader.classList.remove('hidden');
html2canvas(pdfContent, { scale: 2, useCORS: true, logging: false })
.then(canvas => {
pdfHeader.classList.add('hidden');
const imgData = canvas.toDataURL('image/jpeg', 0.95);
const pdf = new jsPDF({ orientation: 'portrait', unit: 'px', format: 'a4' });
const pdfWidth = pdf.internal.pageSize.getWidth();
const pageMargin = 60;
const contentWidth = pdfWidth - (pageMargin * 2);
const imgProps = pdf.getImageProperties(imgData);
const imgHeight = (imgProps.height * contentWidth) / imgProps.width;
pdf.addImage(imgData, 'JPEG', pageMargin, pageMargin, contentWidth, imgHeight);
pdf.save('PayPal-Fee-Statement.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 initializeTabs = () => {
const tabsContainer = document.getElementById('tabs-container');
const prevTabBtn = document.getElementById('prev-tab-btn');
const nextTabBtn = document.getElementById('next-tab-btn');
let activeTabIndex = 0;
const tabs = [ { name: 'Calculator', id: 'calculator' }, { name: 'Configuration', id: 'config' } ];
tabsContainer.innerHTML = tabs.map(t => `
`).join('');
mainContent.innerHTML = tabs.map(t => `
`).join('');
const tabButtons = tabsContainer.querySelectorAll('.tab-btn');
const tabContents = mainContent.querySelectorAll('.tab-content');
const switchTab = (index) => {
activeTabIndex = index;
tabButtons.forEach((btn, i) => btn.classList.toggle('active', i === index));
tabContents.forEach((content, i) => content.classList.toggle('hidden', i !== index));
prevTabBtn.disabled = activeTabIndex === 0;
nextTabBtn.disabled = activeTabIndex === tabs.length - 1;
};
tabButtons.forEach((btn, index) => btn.addEventListener('click', () => switchTab(index)));
prevTabBtn.addEventListener('click', () => { if (activeTabIndex > 0) switchTab(activeTabIndex - 1); });
nextTabBtn.addEventListener('click', () => { if (activeTabIndex < tabs.length - 1) switchTab(activeTabIndex + 1); });
switchTab(0);
renderCalculator();
renderDataConfig();
};
initializeTabs();
});
