`;
document.getElementById('estimator-form').addEventListener('submit', handleCalculation);
};
const handleCalculation = (e) => {
e.preventDefault();
const distance = parseFloat(document.getElementById('distance').value);
const locationType = document.getElementById('location-type').value;
const deliverySpeed = document.getElementById('delivery-speed').value;
const packageSize = document.getElementById('package-size').value;
if (isNaN(distance) || distance <= 0) {
alert('Please enter a valid, positive distance.');
return;
}
calculationInputs = { distance, locationType, deliverySpeed, packageSize };
let results = [];
appData.methods.forEach(method => {
const locationMultiplier = method.locationMultipliers[locationType];
const speedSurcharge = method.speedSurcharges[deliverySpeed];
const sizeSurcharge = method.sizeSurcharges[packageSize];
const totalCost = (method.baseCost + (distance * method.costPerMile)) * locationMultiplier + speedSurcharge + sizeSurcharge;
if (totalCost > 9000) return; // Exclude bike for large packages
results.push({
method: method.name,
totalCost,
deliveryTime: method.deliveryTime[deliverySpeed],
breakdown: {
base: method.baseCost,
distance: (distance * method.costPerMile) * locationMultiplier,
speed: speedSurcharge,
size: sizeSurcharge
}
});
});
const bestOption = results.reduce((prev, curr) => prev.totalCost < curr.totalCost ? prev : curr);
calculationResult = { results, bestOption };
renderResults();
};
const renderResults = () => {
const resultsContainer = document.getElementById('results-container');
if (!calculationResult) return;
const { results, bestOption } = calculationResult;
const resultsHtml = results.map(r => {
const isBest = r.method === bestOption.method;
return `
${r.method}
Est. ${r.deliveryTime}
${isBest ? `
Best Value` : ''}
${formatCurrency(r.totalCost)}
`;
}).join('');
resultsContainer.innerHTML = `
`;
const ctx = document.getElementById('costChart').getContext('2d');
if (costChartInstance) costChartInstance.destroy();
costChartInstance = new Chart(ctx, {
type: 'bar',
data: {
labels: results.map(r => r.method),
datasets: [{ label: 'Total Estimated Cost', data: results.map(r => r.totalCost), backgroundColor: 'rgba(37, 99, 235, 0.6)' }]
},
options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true } }, plugins: { legend: { display: false } } }
});
document.getElementById('download-pdf-btn').addEventListener('click', generatePdf);
};
const renderConfiguration = () => {
const configContent = document.getElementById('content-config');
if (!configContent) return;
const methodsHtml = appData.methods.map((method, mIndex) => `
`).join('');
configContent.innerHTML = `
${methodsHtml}
`;
document.getElementById('save-config-btn').addEventListener('click', handleConfigSave);
};
const handleConfigSave = () => {
document.querySelectorAll('#config-form input').forEach(input => {
const mIndex = input.dataset.method;
const fieldPath = input.dataset.field.split('.');
let target = appData.methods[mIndex];
for (let i = 0; i < fieldPath.length - 1; i++) {
target = target[fieldPath[i]];
}
target[fieldPath[fieldPath.length - 1]] = parseFloat(input.value);
});
alert('Rate configuration saved!');
};
const generatePdf = () => {
if (!calculationResult) return;
loadingOverlay.style.display = 'flex';
const { jsPDF } = window.jspdf;
const pdf = new jsPDF({ orientation: 'p', unit: 'pt', format: 'a4' });
let y = 40;
pdf.setFontSize(18).setFont('helvetica', 'bold').text('Last-Mile Delivery Cost Report', pdf.internal.pageSize.getWidth() / 2, y, { align: 'center' });
y += 30;
pdf.autoTable({
startY: y,
theme: 'plain',
body: [
['Distance:', `${calculationInputs.distance} miles`, 'Speed:', calculationInputs.deliverySpeed],
['Zone:', calculationInputs.locationType, 'Size:', calculationInputs.packageSize],
]
});
y = pdf.autoTable.previous.finalY + 30;
pdf.autoTable({
startY: y,
head: [['Delivery Method', 'Est. Time', 'Total Cost']],
body: calculationResult.results.map(r => [r.method, r.deliveryTime, formatCurrency(r.totalCost)]),
theme: 'grid',
headStyles: { fillColor: [37, 99, 235] } // Blue header
});
pdf.save(`Last-Mile-Cost-Report.pdf`);
loadingOverlay.style.display = 'none';
};
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: 'Cost Estimator', id: 'estimator' },
{ name: 'Rate Configuration', id: 'config' }
];
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));
});
renderEstimator();
renderConfiguration();
switchTab(0);
lucide.createIcons();
};
initializeUI();
prevTabBtn.addEventListener('click', () => { if (activeTabIndex > 0) switchTab(activeTabIndex - 1); });
nextTabBtn.addEventListener('click', () => { if (activeTabIndex < tabIdentifiers.length - 1) switchTab(activeTabIndex + 1); });
});
