Top Post Type
${topPostType}
`;
};
const renderDataTable = () => {
dataTableBody.innerHTML = '';
const sortedPosts = [...state.posts].sort((a, b) => new Date(b.date) - new Date(a.date));
sortedPosts.forEach(p => {
const engagement = calculateEngagement(p);
const engRate = calculateEngRate(p);
const row = `
| ${p.date} |
${p.title} |
${p.type} |
${formatNumber(p.reach)} |
${formatNumber(engagement)} |
${engRate.toFixed(2)}% |
`;
dataTableBody.innerHTML += row;
});
};
const renderCharts = () => {
// Engagement Trend Chart
const engagementByDate = state.posts.reduce((acc, p) => {
acc[p.date] = (acc[p.date] || 0) + calculateEngagement(p);
return acc;
}, {});
const sortedDates = Object.keys(engagementByDate).sort((a, b) => new Date(a) - new Date(b));
if (engagementChart) engagementChart.destroy();
engagementChart = new Chart(engagementCanvas.getContext('2d'), {
type: 'line',
data: {
labels: sortedDates,
datasets: [{
label: 'Total Engagement',
data: sortedDates.map(date => engagementByDate[date]),
borderColor: '#4f46e5',
tension: 0.1
}]
},
options: {
responsive: true, maintainAspectRatio: false, plugins: { legend: { display: false } },
scales: { x: { type: 'time', time: { unit: 'day' } }, y: { beginAtZero: true } }
}
});
// Engagement by Type
const engagementByType = state.posts.reduce((acc, p) => {
acc[p.type] = (acc[p.type] || 0) + calculateEngagement(p);
return acc;
}, {});
const typeLabels = Object.keys(engagementByType);
const typeData = typeLabels.map(label => engagementByType[label]);
if (typeChart) typeChart.destroy();
typeChart = new Chart(typeCanvas.getContext('2d'), {
type: 'doughnut',
data: {
labels: typeLabels,
datasets: [{ data: typeData, backgroundColor: ['#3b82f6', '#ef4444', '#10b981'] }]
},
options: { responsive: true, maintainAspectRatio: false, plugins: { legend: { position: 'top' } } }
});
};
const renderConfigRows = () => {
configRowsContainer.innerHTML = '';
const sortedPosts = [...state.posts].sort((a,b) => b.id - a.id);
sortedPosts.forEach(p => {
configRowsContainer.innerHTML += `
`.replaceAll('class="config-input"', 'class="config-input w-full border-gray-300 rounded-md shadow-sm"');
});
addConfigEventListeners();
};
// --- EVENT HANDLERS ---
const handleConfigChange = (e) => {
const id = parseInt(e.target.dataset.id);
const field = e.target.dataset.field;
const value = (e.target.type === 'number') ? parseInt(e.target.value, 10) || 0 : e.target.value;
const post = state.posts.find(p => p.id === id);
if (post) post[field] = value;
renderAll();
};
const handleAddPost = () => {
const newId = state.posts.length > 0 ? Math.max(...state.posts.map(p => p.id)) + 1 : 1;
const today = new Date().toISOString().split('T')[0];
state.posts.push({ id: newId, date: today, title: "New Post", type: "Image", reach: 0, likes: 0, comments: 0, shares: 0 });
renderAll();
};
const handleRemovePost = (e) => {
const id = parseInt(e.target.dataset.id);
state.posts = state.posts.filter(p => p.id !== id);
renderAll();
};
const addConfigEventListeners = () => {
document.querySelectorAll('.config-input').forEach(input => input.addEventListener('change', handleConfigChange));
document.querySelectorAll('.remove-btn').forEach(button => button.addEventListener('click', handleRemovePost));
};
const handleDownloadPdf = () => {
const { jsPDF } = window.jspdf;
const pdfContent = document.getElementById('pdf-content');
document.querySelectorAll('.no-print').forEach(el => el.style.visibility = 'hidden');
Chart.defaults.animation = false;
html2canvas(pdfContent, { scale: 2, useCORS: true, backgroundColor: '#ffffff' }).then(canvas => {
document.querySelectorAll('.no-print').forEach(el => el.style.visibility = 'visible');
Chart.defaults.animation = true;
const imgData = canvas.toDataURL('image/png');
const pdf = new jsPDF({ orientation: 'p', unit: 'mm', format: 'a4' });
const pdfWidth = pdf.internal.pageSize.getWidth();
const imgWidth = pdfWidth - 20;
const imgHeight = canvas.height * imgWidth / canvas.width;
pdf.addImage(imgData, 'PNG', 10, 10, imgWidth, imgHeight);
pdf.save('Post-Performance-Dashboard.pdf');
});
};
// --- TABBING LOGIC ---
let currentTabIndex = 0;
const updateTabButtons = () => {
prevTabBtn.disabled = currentTabIndex === 0;
nextTabBtn.disabled = currentTabIndex === tabContents.length - 1;
};
const switchTab = (index) => {
tabButtons.forEach(btn => btn.classList.remove('active'));
tabContents.forEach(content => content.classList.remove('active'));
tabButtons[index].classList.add('active');
tabContents[index].classList.add('active');
currentTabIndex = index;
updateTabButtons();
};
tabButtons.forEach((button, index) => button.addEventListener('click', () => switchTab(index)));
prevTabBtn.addEventListener('click', () => { if (currentTabIndex > 0) switchTab(currentTabIndex - 1); });
nextTabBtn.addEventListener('click', () => { if (currentTabIndex < tabContents.length - 1) switchTab(currentTabIndex + 1); });
// --- INITIALIZATION ---
if (kpiContainer && addPostBtn && downloadPdfBtn) {
addPostBtn.addEventListener('click', handleAddPost);
downloadPdfBtn.addEventListener('click', handleDownloadPdf);
renderAll();
updateTabButtons();
} else {
console.error("Essential dashboard elements could not be found.");
}
});
