30-Day Growth
+${kpis.growthLast30Days.toLocaleString()}
Avg. Open Rate
${kpis.avgOpenRate}%
Total Revenue
$${kpis.totalRevenue.toLocaleString()}
`;
};
const renderCharts = () => {
destroyCharts();
// Line Chart
const lineCtx = document.getElementById('line-chart')?.getContext('2d');
if (lineCtx) {
chartInstances.line = new Chart(lineCtx, {
type: 'line',
data: {
labels: dashboardData.subscriberGrowth.labels,
datasets: [{
label: 'Total Subscribers',
data: dashboardData.subscriberGrowth.data,
borderColor: 'rgba(37, 99, 235, 1)',
backgroundColor: 'rgba(59, 130, 246, 0.2)',
fill: true,
tension: 0.4
}]
},
options: { responsive: true, maintainAspectRatio: true, scales: { y: { beginAtZero: false } } }
});
}
// Bar Chart
const barCtx = document.getElementById('bar-chart')?.getContext('2d');
if (barCtx) {
chartInstances.bar = new Chart(barCtx, {
type: 'bar',
data: {
labels: dashboardData.campaignPerformance.labels,
datasets: [
{
label: 'Open Rate (%)',
data: dashboardData.campaignPerformance.openRates,
backgroundColor: 'rgba(59, 130, 246, 0.6)',
borderColor: 'rgba(37, 99, 235, 1)',
borderWidth: 1
},
{
label: 'Click Rate (%)',
data: dashboardData.campaignPerformance.clickRates,
backgroundColor: 'rgba(34, 197, 94, 0.6)',
borderColor: 'rgba(22, 163, 74, 1)',
borderWidth: 1
}
]
},
options: { responsive: true, maintainAspectRatio: true, scales: { y: { beginAtZero: true, title: { display: true, text: 'Rate (%)' } } } }
});
}
// Doughnut Chart
const doughnutCtx = document.getElementById('doughnut-chart')?.getContext('2d');
if (doughnutCtx) {
chartInstances.doughnut = new Chart(doughnutCtx, {
type: 'doughnut',
data: {
labels: dashboardData.audienceBySource.labels,
datasets: [{
data: dashboardData.audienceBySource.data,
backgroundColor: ['#2563eb', '#16a34a', '#f97316', '#9333ea'],
hoverOffset: 4,
borderWidth: 0,
}]
},
options: {
responsive: true,
maintainAspectRatio: true,
plugins: { legend: { position: 'bottom' } }
}
});
}
};
// --- DATA CONFIGURATION LOGIC ---
const populateConfigData = () => {
dataConfigInput.value = JSON.stringify(dashboardData, null, 2);
};
updateDashboardBtn.addEventListener('click', () => {
try {
const newData = JSON.parse(dataConfigInput.value);
dashboardData = newData; // Update the main data object
jsonErrorDiv.classList.add('hidden');
updateAllViews();
alert('Dashboard updated successfully!');
showTab(0);
} catch (error) {
jsonErrorMessage.textContent = 'Invalid JSON format. Please check your data. ' + error.message;
jsonErrorDiv.classList.remove('hidden');
}
});
// --- PDF GENERATION ---
downloadPdfBtn.addEventListener('click', () => {
const { jsPDF } = window.jspdf;
const pdfContainer = document.getElementById('pdf-content-container');
const dashboardElement = document.getElementById('dashboard-tab');
if (!pdfContainer || !dashboardElement) return;
const clone = dashboardElement.cloneNode(true);
const buttonInClone = clone.querySelector('#download-pdf-btn');
if (buttonInClone) buttonInClone.parentElement.remove();
const canvases = clone.querySelectorAll('canvas');
canvases.forEach(canvas => {
const chartId = canvas.id.split('-')[0];
if (chartInstances[chartId]) {
const image = new Image();
image.src = chartInstances[chartId].toBase64Image();
image.style.width = '100%';
image.style.height = 'auto';
canvas.parentNode.replaceChild(image, canvas);
}
});
pdfContainer.innerHTML = '';
pdfContainer.appendChild(clone);
html2canvas(pdfContainer, {
scale: 2,
useCORS: true,
logging: false,
width: pdfContainer.scrollWidth,
height: pdfContainer.scrollHeight,
}).then(canvas => {
const imgData = canvas.toDataURL('image/png');
const pdf = new jsPDF({
orientation: 'portrait',
unit: 'pt',
format: 'a4'
});
const pdfWidth = pdf.internal.pageSize.getWidth();
const pdfHeight = pdf.internal.pageSize.getHeight();
const imgWidth = canvas.width;
const imgHeight = canvas.height;
const ratio = imgWidth / imgHeight;
let finalImgHeight = pdfWidth / ratio;
let heightLeft = finalImgHeight;
let position = 0;
pdf.addImage(imgData, 'PNG', 0, position, pdfWidth, finalImgHeight);
heightLeft -= pdfHeight;
while (heightLeft > 0) {
position = heightLeft - finalImgHeight;
pdf.addPage();
pdf.addImage(imgData, 'PNG', 0, position, pdfWidth, finalImgHeight);
heightLeft -= pdfHeight;
}
pdf.save('Mailchimp_Analytics_Dashboard.pdf');
pdfContainer.innerHTML = '';
}).catch(err => {
console.error("PDF generation failed:", err);
alert("Sorry, there was an error creating the PDF.");
});
});
// --- INITIALIZATION ---
const updateAllViews = () => {
renderKPIs();
renderCharts();
};
// Initial load
showTab(0);
updateAllViews();
populateConfigData();
});
