`;
document.getElementById('config-tab').innerHTML = content;
document.getElementById('data-config-input').value = JSON.stringify(costData, null, 2);
document.getElementById('update-dashboard-btn').addEventListener('click', handleUpdateDashboard);
};
// --- CHART RENDERING (on tab switch) ---
const renderChartsForTab = (tabId) => {
destroyCharts();
if (tabId === 'overview') renderOverviewTab();
if (tabId === 'breakdown') {
chartInstances.materialBreakdown = new Chart(document.getElementById('breakdown-material-chart').getContext('2d'), {
type: 'bar',
data: { labels: costData.materialCosts.labels, datasets: [{ label: 'Cost ($)', data: costData.materialCosts.data, backgroundColor: 'rgba(59, 130, 246, 0.6)' }] },
options: { responsive: true, maintainAspectRatio: true, indexAxis: 'y' }
});
chartInstances.laborBreakdown = new Chart(document.getElementById('breakdown-labor-chart').getContext('2d'), {
type: 'bar',
data: { labels: costData.laborCosts.labels, datasets: [{ label: 'Cost ($)', data: costData.laborCosts.data, backgroundColor: 'rgba(22, 163, 74, 0.6)' }] },
options: { responsive: true, maintainAspectRatio: true, indexAxis: 'y' }
});
chartInstances.overheadBreakdown = new Chart(document.getElementById('breakdown-overhead-chart').getContext('2d'), {
type: 'pie',
data: { labels: costData.overheadCosts.labels, datasets: [{ data: costData.overheadCosts.data, backgroundColor: ['#f97316', '#eab308', '#84cc16', '#64748b'] }] },
options: { responsive: true, maintainAspectRatio: true }
});
}
};
// --- NAVIGATION & EVENT HANDLING ---
const showTab = (tabIndex) => {
currentTab = tabIndex;
const tabId = tabs[tabIndex];
document.querySelectorAll('.tab-pane').forEach(pane => pane.classList.add('hidden'));
document.getElementById(`${tabId}-tab`).classList.remove('hidden');
document.querySelectorAll('.tab-btn').forEach(btn => btn.classList.remove('active'));
document.querySelector(`.tab-btn[data-tab='${tabId}']`).classList.add('active');
prevBtn.style.visibility = (currentTab === 0) ? 'hidden' : 'visible';
nextBtn.style.visibility = (currentTab >= tabs.length - 2) ? 'hidden' : 'visible';
downloadPdfBtn.style.visibility = (tabId === 'config') ? 'hidden' : 'visible';
renderChartsForTab(tabId);
};
tabNavigation.addEventListener('click', (e) => {
if (e.target.matches('.tab-btn')) {
const tabId = e.target.dataset.tab;
const tabIndex = tabs.indexOf(tabId);
showTab(tabIndex);
}
});
nextBtn.addEventListener('click', () => {
if (currentTab < tabs.length - 1) showTab(currentTab + 1);
});
prevBtn.addEventListener('click', () => {
if (currentTab > 0) showTab(currentTab - 1);
});
const handleUpdateDashboard = () => {
const configInput = document.getElementById('data-config-input');
const errorDiv = document.getElementById('json-error');
const errorMessage = document.getElementById('json-error-message');
try {
const newData = JSON.parse(configInput.value);
costData = newData;
errorDiv.classList.add('hidden');
renderAllTabs();
alert('Dashboard updated successfully!');
showTab(0);
} catch (error) {
errorMessage.textContent = 'Invalid JSON format. ' + error.message;
errorDiv.classList.remove('hidden');
}
};
// --- PDF GENERATION ---
downloadPdfBtn.addEventListener('click', () => {
const { jsPDF } = window.jspdf;
const pdfContainer = document.getElementById('pdf-content-container');
const activeTabId = tabs[currentTab];
const activeTabElement = document.getElementById(`${activeTabId}-tab`);
if (!pdfContainer || !activeTabElement) return;
const clone = activeTabElement.cloneNode(true);
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.text(`Manufacturing Cost Analysis - ${activeTabId.charAt(0).toUpperCase() + activeTabId.slice(1)}`, 40, 40);
pdf.addImage(imgData, 'PNG', 0, 60, pdfWidth, finalImgHeight);
heightLeft -= (pdfHeight - 60);
while (heightLeft > 0) {
position = heightLeft - finalImgHeight;
pdf.addPage();
pdf.addImage(imgData, 'PNG', 0, position, pdfWidth, finalImgHeight);
heightLeft -= pdfHeight;
}
pdf.save(`Manufacturing_Cost_Analysis_${activeTabId}.pdf`);
pdfContainer.innerHTML = '';
}).catch(err => {
console.error("PDF generation failed:", err);
alert("Sorry, there was an error creating the PDF.");
});
});
// --- INITIALIZATION ---
createTabs();
renderAllTabs();
showTab(0);
});
