Out of Stock
${metrics.outOfStockItems}
`;
renderCharts(metrics.categoryData);
document.getElementById('download-pdf-btn').addEventListener('click', generatePdf);
lucide.createIcons();
};
const renderCharts = (categoryData) => {
const labels = Object.keys(categoryData);
const colors = ['#3b82f6', '#8b5cf6', '#10b981', '#f59e0b', '#ef4444'];
const distCtx = document.getElementById('categoryDistributionChart').getContext('2d');
if (charts.dist) charts.dist.destroy();
charts.dist = new Chart(distCtx, {
type: 'doughnut',
data: { labels, datasets: [{ data: labels.map(l => categoryData[l].count), backgroundColor: colors }] },
options: { responsive: true, maintainAspectRatio: false, plugins: { title: { display: true, text: 'Stock Distribution by Category (Units)' } } }
});
const valueCtx = document.getElementById('categoryValueChart').getContext('2d');
if (charts.value) charts.value.destroy();
charts.value = new Chart(valueCtx, {
type: 'bar',
data: { labels, datasets: [{ label: 'Inventory Value', data: labels.map(l => categoryData[l].value), backgroundColor: '#60a5fa' }] },
options: { responsive: true, maintainAspectRatio: false, plugins: { title: { display: true, text: 'Inventory Value by Category' } }, scales: { y: { ticks: { callback: value => formatCurrency(value) }}} }
});
};
const renderInventoryList = () => {
const listContent = document.getElementById('content-inventory');
if (!listContent) return;
listContent.innerHTML = `
`;
renderInventoryTable();
document.getElementById('inventory-search').addEventListener('keyup', renderInventoryTable);
};
const renderInventoryTable = () => {
const tableBody = document.getElementById('inventory-table-body');
if (!tableBody) return;
const searchTerm = document.getElementById('inventory-search')?.value.toLowerCase() || '';
const filteredInventory = appData.inventory.filter(item =>
item.name.toLowerCase().includes(searchTerm) ||
item.sku.toLowerCase().includes(searchTerm) ||
item.category.toLowerCase().includes(searchTerm)
);
tableBody.innerHTML = filteredInventory.map(item => `
| ${item.name} |
${item.sku} |
${item.category} |
${item.stock} |
${formatCurrency(item.cost)} |
${formatCurrency(item.stock * item.cost)} |
`).join('');
};
const renderDataConfig = () => {
const configContent = document.getElementById('content-config');
if (!configContent) return;
configContent.innerHTML = `
Manage Inventory Data
`;
renderConfigList();
document.getElementById('add-item-btn').addEventListener('click', handleAddItem);
document.getElementById('save-inventory-btn').addEventListener('click', handleSaveInventory);
lucide.createIcons();
};
const renderConfigList = () => {
const container = document.getElementById('inventory-config-list');
if (!container) return;
container.innerHTML = appData.inventory.map((item, index) => `
`).join('');
document.querySelectorAll('.remove-item-btn').forEach(btn => btn.addEventListener('click', handleRemoveItem));
lucide.createIcons();
};
const handleAddItem = () => {
const container = document.getElementById('inventory-config-list');
const newRow = document.createElement('div');
newRow.className = 'item-config-row grid grid-cols-12 gap-2 p-2 border rounded-md items-center';
newRow.innerHTML = `
`;
container.appendChild(newRow);
newRow.querySelector('.remove-item-btn').addEventListener('click', handleRemoveItem);
lucide.createIcons();
};
const handleRemoveItem = (e) => {
e.target.closest('.item-config-row').remove();
};
const handleSaveInventory = () => {
const newInventory = [];
document.querySelectorAll('.item-config-row').forEach(row => {
const item = {};
row.querySelectorAll('input').forEach(input => {
const prop = input.dataset.prop;
item[prop] = input.type === 'number' ? parseFloat(input.value) : input.value;
});
if (item.name && item.sku) { // Basic validation
newInventory.push(item);
}
});
appData.inventory = newInventory;
alert('Inventory saved!');
// Re-render other tabs
renderDashboard();
renderInventoryList();
};
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: 'landscape', unit: 'px', format: 'a4' });
const pdfWidth = pdf.internal.pageSize.getWidth();
const imgProps = pdf.getImageProperties(imgData);
const imgHeight = (imgProps.height * pdfWidth) / imgProps.width;
pdf.addImage(imgData, 'JPEG', 0, 0, pdfWidth, imgHeight);
pdf.save('Stock-Management-Report.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: 'Dashboard', id: 'dashboard', renderer: renderDashboard },
{ name: 'Inventory List', id: 'inventory', renderer: renderInventoryList },
{ name: 'Data Configuration', id: 'config', renderer: renderDataConfig }
];
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); });
tabs.forEach(t => t.renderer());
switchTab(0);
};
initializeTabs();
});
