wms-app/app/include_sidebar.php

<?php
  $sidebar_role = $_SESSION['login_role'] ?? 'viewer';
  $sidebar_can_staff = in_array($sidebar_role, ['owner', 'admin', 'staff'], true);
?>
<!-- SIDEBAR -->
<aside id="sidebar" class="sidebar overflow-y-auto">
  <div class="logo-area">
    <a href="index.html" class="d-inline-flex">
      <img src="<?php echo $server_url?>assets/images/favicon.png" alt="" width="40"/>
      <span class="logo-text ms-2">
        <img src="<?php echo $server_url?>assets/images/logo.png" alt="" height="40"/>
      </span>
    </a>
  </div>

  <ul class="nav flex-column">

    <!-- Main -->
    <li class="nav-text-space">
      <small class="nav-text text-muted">Main</small>
    </li>

    <li>
      <a class="nav-link active" href="<?php echo $server_url?>dashboard/index.php">
        <i class="ti ti-home"></i>
        <span class="nav-text">Dashboard</span>
      </a>
    </li>

    <li>
      <a class="nav-link" href="<?php echo $server_url?>dashboard/low_stock_products.php">
        <i class="ti ti-alert-triangle"></i>
        <span class="nav-text">Low Stock</span>
      </a>
    </li>

    <!-- Inventory / Stock -->
    <li class="nav-text-space">
      <small class="nav-text text-muted">Inventory / Stock</small>
    </li>

    <li>
      <a class="nav-link" href="<?php echo $server_url?>ics/stock_overview.php">
        <i class="ti ti-clipboard"></i>
        <span class="nav-text">Stock Overview</span>
      </a>
    </li>

    <?php if ($sidebar_can_staff): ?>
      <li>
        <a class="nav-link" href="<?php echo $server_url?>ics/stock_in.php">
          <i class="ti ti-package-import"></i>
          <span class="nav-text">Stock In</span>
        </a>
      </li>

      <li>
        <a class="nav-link" href="<?php echo $server_url?>ics/stock_out.php">
          <i class="ti ti-package-export"></i>
          <span class="nav-text">Stock Out</span>
        </a>
      </li>

      <li>
        <a class="nav-link" href="<?php echo $server_url?>ics/stock_transfer.php">
          <i class="ti ti-package"></i>
          <span class="nav-text">Stock Transfer</span>
        </a>
      </li>

      <li>
        <a class="nav-link" href="<?php echo $server_url?>ics/sku_barcode_label.php">
          <i class="ti ti-barcode"></i>
          <span class="nav-text">SKU Labels</span>
        </a>
      </li>

      <li>
        <a class="nav-link" href="<?php echo $server_url?>ics/location_barcode_label.php">
          <i class="ti ti-map-pin-code"></i>
          <span class="nav-text">Location Labels</span>
        </a>
      </li>
    <?php endif; ?>

    <!-- Orders & Sales -->
    <li class="nav-text-space">
      <small class="nav-text text-muted">Orders &amp; Sales</small>
    </li>

    <li>
      <a class="nav-link" href="<?php echo $server_url?>order/order.php">
        <i class="ti ti-shopping-cart"></i>
        <span class="nav-text">Sales Orders</span>
      </a>
    </li>

    <li>
      <a class="nav-link" href="<?php echo $server_url?>order/return.php">
        <i class="ti ti-arrow-back-up"></i>
        <span class="nav-text">Returns</span>
      </a>
    </li>

    <li>
      <a class="nav-link" href="<?php echo $server_url?>order/invoice.php">
        <i class="ti ti-file-invoice"></i>
        <span class="nav-text">Sales Invoices</span>
      </a>
    </li>

     <li>
      <a class="nav-link" href="<?php echo $server_url?>po/po.php">
        <i class="ti ti-clipboard-list"></i>
        <span class="nav-text">Purchase Orders</span>
      </a>
    </li>

    <!-- Reports -->
    <li class="nav-text-space">
      <small class="nav-text text-muted">Reports</small>
    </li>

    <li>
      <a class="nav-link" href="<?php echo $server_url?>reports/stock_movement.php">
        <i class="ti ti-chart-bar"></i>
        <span class="nav-text">Stock Movement</span>
      </a>
    </li>

    <li>
      <a class="nav-link" href="<?php echo $server_url?>reports/expired_stock.php">
        <i class="ti ti-clock"></i>
        <span class="nav-text">Expired Stock</span>
      </a>
    </li>

    <li>
      <a class="nav-link" href="<?php echo $server_url?>reports/occupy_rack.php">
        <i class="ti ti-layout-grid"></i>
        <span class="nav-text">Rack Occupancy</span>
      </a>
    </li>

    <li>
      <a class="nav-link" href="<?php echo $server_url?>reports/product_lot.php">
        <i class="ti ti-packages"></i>
        <span class="nav-text">Product Lots</span>
      </a>
    </li>

    <li><br><br><br><br></li>

  </ul>
</aside>