billing_UI/billing.html at main · Naveenv26/billing_UI · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
  <title>Create Invoice — Billing App</title>
  <script src="https://cdn.tailwindcss.com"></script>
  <link rel="icon" href="https://angular.io/assets/images/logos/angular/angular.svg">
  <style>
    /* Add a subtle scrollbar style */
    ::-webkit-scrollbar { width: 6px; }
    ::-webkit-scrollbar-track { background: #f1f5f9; }
    ::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
    ::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

    /* Custom Animation for Sidebar */
    @keyframes slideIn { from { transform: translateX(-100%);} to { transform: translateX(0);} }
    .slide-in { animation: slideIn .3s ease-out both }

    /* Print-Specific Styles */
    @media print {
      body > *:not(#billModal) { display: none !important; }
      #billModal {
        position: absolute; left: 0; top: 0; width: 100%; height: 100%;
        display: flex !important; justify-content: flex-start; align-items: flex-start;
        background: white !important; backdrop-filter: none !important;
      }
      #printableBill {
        box-shadow: none !important; border: 1px solid #ccc; margin: 0;
        width: 100%; max-width: 100%; border-radius: 0;
      }
      #modal-actions { display: none !important; }
    }
  </style>
</head>
<body class="bg-slate-50 min-h-screen font-sans">

  <div id="globalBar" class="bg-white/95 backdrop-blur sticky top-0 z-50 border-b border-slate-200">
    <div class="max-w-screen-2xl mx-auto px-4 py-3 flex flex-wrap gap-2 items-center justify-between">
      <div class="flex items-center gap-2">
        <img src="https://angular.io/assets/images/logos/angular/angular.svg" class="w-8 h-8" alt="Logo">
        <span class="font-bold text-slate-800 text-lg">Billing App — Customer</span>
      </div>
      <div class="flex items-center gap-2">
        <a href="login.html" class="ml-2 text-rose-600 hover:underline font-medium">Logout</a>
      </div>
    </div>
  </div>

  <div class="flex">
    <aside id="sidebar" class="fixed md:sticky top-[56px] md:top-[64px] left-0 h-[calc(100vh-56px)] md:h-[calc(100vh-64px)] w-72 -translate-x-full md:translate-x-0 md:w-64 bg-white border-r border-slate-200 z-40 md:z-30 md:block shadow md:shadow-none transition-transform duration-200">
      <div class="h-full flex flex-col">
        <div class="p-4 border-b border-slate-200">
          <div class="text-sm text-slate-500">Navigation</div>
        </div>
        <nav class="p-3 space-y-1 overflow-y-auto">
          <a href="dashboard.html" class="flex items-center gap-3 px-3 py-2 rounded-xl hover:bg-indigo-50 text-slate-700 font-medium">📊 Dashboard</a>
          <a href="billing.html" class="flex items-center gap-3 px-3 py-2 rounded-xl hover:bg-indigo-50 text-slate-700 font-medium">🧾 Billing</a>
          <a href="reports.html" class="flex items-center gap-3 px-3 py-2 rounded-xl hover:bg-indigo-50 text-slate-700 font-medium">📈 Reports</a>
          <a href="stock.html" class="flex items-center gap-3 px-3 py-2 rounded-xl hover:bg-indigo-50 text-slate-700 font-medium">📦 Stock</a>
          <div class="pt-3 mt-3 border-t border-slate-200">
            <a href="home.html" class="w-full text-left px-3 py-2 rounded-xl bg-gradient-to-r from-indigo-600 to-violet-600 text-white shadow-md flex items-center gap-3 font-semibold">
              <span class="w-2 h-2 rounded-full bg-white/50 scale-125"></span>
              🏠 Home</a>
          </div>
        </nav>
        <div class="mt-auto p-4 text-xs text-slate-500">© 2025 Sparkzen Billing</div>
      </div>
    </aside>

    <div class="flex-1 md:pl-5 w-full" id="top">
        <div class="md:hidden sticky top-[56px] z-40 bg-slate-50/80 backdrop-blur border-b border-slate-200">
            <div class="px-4 py-3 flex items-center justify-between">
                <button id="hamburger" class="p-2 rounded-lg border border-slate-300 bg-white shadow" aria-label="Open Menu">☰</button>
                <div class="text-lg font-bold text-slate-800">Create Bill</div>
                <div class="flex items-center gap-3">
                    <img class="w-8 h-8 rounded-full" src="https://i.pravatar.cc/64?img=5" alt="User"/>
                </div>
            </div>
        </div>

      <main class="max-w-4xl mx-auto p-4 sm:p-6 lg:p-8 space-y-6">
        <div class="hidden md:block">
          <h1 class="text-2xl font-bold text-slate-800">Create Bill</h1>
          <p class="text-sm text-slate-500">Add products and generate a new invoice.</p>
        </div>

        <div class="bg-white shadow-md rounded-2xl p-6">
          <h3 class="text-xl font-semibold text-slate-800 mb-4">Select Products</h3>
          <input id="searchInput" type="text" placeholder="Search product by name..." onkeyup="renderProducts()"
                 class="w-full border border-slate-300 rounded-lg px-3 py-2 mb-4 text-sm focus:ring-2 focus:ring-indigo-200">
          <div id="productsList" class="grid grid-cols-1 sm:grid-cols-2 md:grid-cols-3 lg:grid-cols-4 gap-3 max-h-[50vh] overflow-y-auto pr-2">
          </div>
        </div>

        <div id="billingItemsContainer" class="bg-white shadow-md rounded-2xl p-6 hidden">
          <h3 class="text-xl font-semibold text-slate-800 mb-4">Billing Items</h3>
          <div class="overflow-x-auto">
            <table class="w-full text-sm">
              <thead class="border-b"><tr class="text-slate-600"><th class="p-3 text-left font-medium">Product</th><th class="p-3 text-left font-medium">Price</th><th class="p-3 text-center font-medium">Quantity</th><th class="p-3 text-right font-medium">Total</th><th class="p-3 text-center font-medium">Actions</th></tr></thead>
              <tbody id="billingTable" class="divide-y divide-slate-100"></tbody>
            </table>
          </div>
        </div>

        <div id="summaryContainer" class="bg-white shadow-md rounded-2xl p-6 hidden">
          <h3 class="text-xl font-semibold text-slate-800 mb-4">Summary</h3>
          <div class="space-y-4">
            <div>
              <h4 class="font-semibold text-slate-600 mb-2">Customer Details</h4>
              <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                <div>
                  <label for="customerName" class="text-sm font-medium text-slate-600">Customer Name</label>
                  <input id="customerName" type="text" placeholder="e.g., Arun Kumar" class="mt-1 w-full border border-slate-300 rounded-lg px-3 py-2 text-sm focus:ring-2 focus:ring-indigo-200">
                </div>
                <div>
                  <label for="customerPhone" class="text-sm font-medium text-slate-600">Phone Number</label>
                  <input id="customerPhone" type="tel" placeholder="e.g., 9876543210" class="mt-1 w-full border border-slate-300 rounded-lg px-3 py-2 text-sm focus:ring-2 focus:ring-indigo-200">
                </div>
              </div>
            </div>
            <hr/>
            <div class="flex justify-end">
              <div class="w-full max-w-sm space-y-2 text-sm">
                <div class="flex justify-between items-center"><span class="text-slate-600">Subtotal</span><span class="font-medium text-slate-800">₹<span id="subTotal">0.00</span></span></div>

                <div class="flex justify-between items-center">
                  <label for="gstPercent" class="text-slate-600">GST (%)</label>
                  <div class="flex items-center gap-2">
                    <input id="gstPercent" type="number" value="18" class="w-16 border border-slate-300 rounded-md px-2 py-1 text-sm text-right focus:ring-2 focus:ring-indigo-200">
                    <span class="font-medium text-slate-800 w-20 text-right">₹<span id="taxTotal">0.00</span></span>
                  </div>
                </div>
                <div class="flex justify-between text-base font-bold text-slate-900 mt-2 pt-2 border-t"><span>Grand Total</span><span>₹<span id="grandTotal">0.00</span></span></div>
              </div>
            </div>
            <div class="flex justify-end mt-4">
              <button id="finalizeBtn" class="w-full md:w-auto bg-gradient-to-r from-indigo-600 to-violet-600 text-white font-semibold px-6 py-3 rounded-lg shadow hover:shadow-lg transition">Generate Invoice</button>
            </div>
          </div>
        </div>
      </main>
    </div>
  </div>

  <div id="billModal" class="fixed inset-0 bg-black/60 backdrop-blur-sm flex justify-center items-center hidden z-[60] p-4">
    <div id="printableBill" class="bg-white rounded-2xl shadow-2xl w-full max-w-md">
      <div class="p-6 border-b"><h2 class="text-xl font-bold text-slate-800">Invoice</h2><p class="text-sm text-slate-500">Thank you for your purchase!</p></div>
      <div id="billDetails" class="p-6 space-y-4 text-sm"></div>
      <div id="modal-actions" class="p-4 bg-slate-50 rounded-b-2xl flex justify-end items-center gap-3">
        <button onclick="window.print()" class="text-sm bg-indigo-600 text-white px-4 py-2 rounded-lg hover:bg-indigo-700">Print Bill</button>
        <button onclick="closeBillModal()" class="text-sm bg-white border border-slate-300 text-slate-700 px-4 py-2 rounded-lg hover:bg-slate-100">Close</button>
      </div>
    </div>
  </div>

  <script>
    const sidebar = document.getElementById('sidebar');
    const hamburger = document.getElementById('hamburger');
    if (hamburger) {
      hamburger.addEventListener('click', () => sidebar.classList.toggle('-translate-x-full'));
    }

    let products = [
        { id: 1, name: "Parle-G Gold", stock: 150, price: 10 }, { id: 2, name: "Lays Classic", stock: 80, price: 20 },
        { id: 3, name: "Amul Gold Milk 1L", stock: 40, price: 70 }, { id: 4, name: "Cadbury Dairy Milk", stock: 120, price: 45 },
        { id: 5, name: "Maggi Noodles Pack", stock: 95, price: 56 }, { id: 6, name: "Coca-Cola 750ml", stock: 60, price: 40 },
        { id: 7, name: "Tata Salt 1kg", stock: 75, price: 25 }, { id: 8, name: "Cornetto Ice Cream", stock: 38, price: 50 },
        { id: 9, name: "Nescafe Coffee 50g", stock: 55, price: 155 },
    ];
    let billingList = [];
    const gstInput = document.getElementById('gstPercent');
    const billingItemsContainer = document.getElementById('billingItemsContainer');
    const summaryContainer = document.getElementById('summaryContainer');

    function renderProducts() {
      const searchTerm = document.getElementById("searchInput").value.trim().toLowerCase();
      const listEl = document.getElementById("productsList");
      const filteredProducts = products.filter(p => p.name.toLowerCase().includes(searchTerm));
      listEl.innerHTML = "";
      if (filteredProducts.length > 0) {
        filteredProducts.forEach(p => {
          const billItem = billingList.find(item => item.id === p.id);
          const stockLeft = p.stock - (billItem ? billItem.qty : 0);
          const isOutOfStock = stockLeft <= 0;
          listEl.innerHTML += `
          <div onclick="${isOutOfStock ? '' : `addToBilling(${p.id})`}"
               class="border border-slate-200 p-3 rounded-lg text-center
                      ${isOutOfStock ? 'opacity-50 cursor-not-allowed bg-slate-50' : 'cursor-pointer hover:bg-indigo-50 hover:border-indigo-200 transition-all'}">
              <div class="font-semibold text-slate-700 text-sm">${p.name}</div>
              <div class="text-xs text-slate-500 mt-1">₹${p.price.toFixed(2)} • Stock: <span class="${stockLeft <= 5 ? 'text-red-500 font-semibold' : ''}">${stockLeft}</span></div>
          </div>`;
        });
      } else {
        listEl.innerHTML = `<p class="text-center text-slate-500 py-4 col-span-full">No products found.</p>`;
      }
    }

    function addToBilling(productId) {
      const product = products.find(p => p.id === productId);
      if (!product) return;
      const existingItem = billingList.find(item => item.id === productId);
      if (existingItem) {
        if (existingItem.qty < product.stock) existingItem.qty++;
      } else {
        billingList.push({ ...product, qty: 1 });
      }
      renderAll();
    }

    function directUpdateQty(index, newValue) {
      const billItem = billingList[index];
      const product = products.find(p => p.id === billItem.id);
      let newQty = parseInt(newValue);
      if (isNaN(newQty) || newQty < 1) newQty = 1;
      if (newQty > product.stock) newQty = product.stock;
      billingList[index].qty = newQty;
      renderAll();
    }

    function updateQty(index, change) {
      const billItem = billingList[index];
      const product = products.find(p => p.id === billItem.id);
      const newQty = billItem.qty + change;
      if (newQty > 0 && newQty <= product.stock) {
        billingList[index].qty = newQty;
      }
      renderAll();
    }

    function removeItem(index) {
      billingList.splice(index, 1);
      renderAll();
    }

    function renderBilling() {
      const table = document.getElementById("billingTable");
      table.innerHTML = "";

      if (billingList.length > 0) {
        billingItemsContainer.classList.remove('hidden');
        summaryContainer.classList.remove('hidden');
      } else {
        billingItemsContainer.classList.add('hidden');
        summaryContainer.classList.add('hidden');
      }

      billingList.forEach((item, idx) => {
        const product = products.find(p => p.id === item.id);
        if (!product) return;
        const rowTotal = item.price * item.qty;
        table.innerHTML += `
        <tr class="border-b border-slate-100"><td class="p-3 font-medium text-slate-800">${item.name}</td><td class="p-3 text-slate-600">₹${item.price.toFixed(2)}</td><td class="p-3"><div class="flex items-center justify-center space-x-2"><button onclick="updateQty(${idx}, -1)" class="bg-slate-200 h-7 w-7 rounded-md text-slate-700 font-bold hover:bg-slate-300">-</button><input type="number" value="${item.qty}" min="1" max="${product.stock}" onchange="directUpdateQty(${idx}, this.value)" class="w-16 h-7 text-center font-medium border border-slate-200 rounded-md focus:ring-2 focus:ring-indigo-200 focus:outline-none"><button onclick="updateQty(${idx}, 1)" class="bg-slate-200 h-7 w-7 rounded-md text-slate-700 font-bold hover:bg-slate-300">+</button></div></td><td class="p-3 text-right font-semibold text-slate-800">₹${rowTotal.toFixed(2)}</td><td class="p-3 text-center"><button onclick="removeItem(${idx})" class="text-red-500 hover:text-red-700" title="Remove Item"><svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5" viewBox="0 0 20 20" fill="currentColor"><path fill-rule="evenodd" d="M9 2a1 1 0 00-.894.553L7.382 4H4a1 1 0 000 2v10a2 2 0 002 2h8a2 2 0 002-2V6a1 1 0 100-2h-3.382l-.724-1.447A1 1 0 0011 2H9zM7 8a1 1 0 012 0v6a1 1 0 11-2 0V8zm4 0a1 1 0 012 0v6a1 1 0 11-2 0V8z" clip-rule="evenodd" /></svg></button></td></tr>`;
      });
      calculateTotals();
    }

    // NEW: Function to handle all total calculations
    function calculateTotals() {
      let subTotal = billingList.reduce((acc, item) => acc + (item.price * item.qty), 0);
      let gstPercent = parseFloat(gstInput.value) || 0;

      // Update the GST label to show the current percentage
      document.querySelector('label[for="gstPercent"]').textContent = `GST (${gstPercent}%)`;

      const tax = subTotal * (gstPercent / 100);
      const grandTotal = subTotal + tax;
      document.getElementById("subTotal").textContent = subTotal.toFixed(2);
      document.getElementById("taxTotal").textContent = tax.toFixed(2);
      document.getElementById("grandTotal").textContent = grandTotal.toFixed(2);
    }

    function renderAll() {
      renderBilling();
      renderProducts();
    }

    document.getElementById("finalizeBtn").addEventListener("click", () => {
      const customerName = document.getElementById('customerName').value.trim();
      if (!billingList.length) return alert("Please add items to the bill.");
      if (!customerName) return alert("Please enter the customer's name.");
      showBillModal();

      billingList.forEach(soldItem => {
        const product = products.find(p => p.id === soldItem.id);
        if (product) product.stock -= soldItem.qty;
      });

      document.getElementById('customerName').value = '';
      document.getElementById('customerPhone').value = '';
      billingList = [];
      renderAll();
    });

    function generateInvoiceNumber() { return `INV-${Date.now().toString().slice(-6)}`; }

    function showBillModal() {
      const billDetails = document.getElementById("billDetails");
      const subTotal = billingList.reduce((acc, item) => acc + (item.price * item.qty), 0);
      const gstPercent = parseFloat(gstInput.value) || 0;
      const tax = subTotal * (gstPercent / 100);
      const grandTotal = subTotal + tax;
      const invoiceNumber = generateInvoiceNumber();
      const date = new Date().toLocaleDateString('en-IN', { day: '2-digit', month: 'short', year: 'numeric' });
      const customerName = document.getElementById('customerName').value.trim();
      const customerPhone = document.getElementById('customerPhone').value.trim();

      billDetails.innerHTML = `<div class="flex justify-between items-baseline"><div><div class="font-bold text-slate-800">${invoiceNumber}</div><div class="text-slate-500">Date: ${date}</div></div><div class="text-right"><div class="font-semibold text-slate-800">${customerName}</div><div class="text-slate-500">${customerPhone}</div></div></div><table class="w-full text-left mt-4"><thead><tr class="bg-slate-100 text-slate-600"><th class="p-2 rounded-l-lg">Product</th><th class="p-2 text-center">Qty</th><th class="p-2 text-right rounded-r-lg">Total</th></tr></thead><tbody class="divide-y divide-slate-100">${billingList.map(item => `<tr><td class="p-2">${item.name}</td><td class="p-2 text-center">${item.qty}</td><td class="p-2 text-right">₹${(item.price * item.qty).toFixed(2)}</td></tr>`).join("")}</tbody></table><div class="mt-4 pt-4 border-t text-right space-y-1"><div class="flex justify-between"><span class="text-slate-600">Subtotal:</span> <span>₹${subTotal.toFixed(2)}</span></div><div class="flex justify-between"><span class="text-slate-600">GST (${gstPercent}%):</span> <span>₹${tax.toFixed(2)}</span></div><div class="flex justify-between font-bold text-lg"><span class="text-slate-800">Grand Total:</span> <span>₹${grandTotal.toFixed(2)}</span></div></div>`;
      document.getElementById("billModal").classList.remove("hidden");
    }

    function closeBillModal() {
      document.getElementById("billModal").classList.add("hidden");
    }

    // NEW: Add event listener to recalculate totals when GST value changes
    gstInput.addEventListener('input', calculateTotals);

    window.onload = () => {
      renderAll();
    };
  </script>
</body>
</html>