cost/price/margin

app/assets/utils/classes/ProductManager.php

@@ -360,6 +360,7 @@ class ProductManager {
             ':sku'           => $data['sku'],
             ':uom'           => $data['uom'] ?? 'pcs',
             ':price'         => $data['price'],
+            ':cost_price'    => (float)($data['cost_price'] ?? 0),
             ':min_stock'     => $data['min_stock'],
             ':reorder_point' => $data['reorder_point'],
             ':category'      => $data['category'],
@@ -377,6 +378,7 @@ class ProductManager {
                     sku            = :sku,
                     uom            = :uom,
                     price          = :price,
+                    cost_price     = :cost_price,
                     min_stock      = :min_stock,
                     reorder_point  = :reorder_point,
                     category       = :category,
@@ -389,10 +391,10 @@ class ProductManager {
         } else {
             $this->pdo->prepare(
                 "INSERT INTO md_product
-                    (company_id, product_name, sku, uom, price, min_stock, reorder_point,
+                    (company_id, product_name, sku, uom, price, cost_price, min_stock, reorder_point,
                     category, product_image, `description`, `status`, `log`)
                 VALUES
-                    (:company_id, :product_name, :sku, :uom, :price, :min_stock, :reorder_point,
+                    (:company_id, :product_name, :sku, :uom, :price, :cost_price, :min_stock, :reorder_point,
                     :category, :product_image, :description, :status, :log)"
             )->execute($params);
         }

app/assets/utils/classes/PurchaseOrderManager.php

@@ -366,11 +366,19 @@ class PurchaseOrderManager {
             if ($zone === '' && $rack !== '') $zone  = $rack;
             if ($aisle === '' && $rack !== '') $aisle = $rack;
 
+            // Resolve unit_price: prefer the receive-time override, fall back to PO item price
+            $po_item_price = 0;
+            if ($item_id >= 0 && isset($po_items_by_id[$item_id])) {
+                $po_item_price = (float)($po_items[$po_items_by_id[$item_id]]['unit_price'] ?? 0);
+            }
+            $unit_price = (float)($recv['unit_price'] ?? $po_item_price);
+
             $stock_data = [
                 'id'            => 0,
                 'warehouse'     => $warehouse_id,
                 'product_sku'   => $product_sku,
                 'quantity'      => $quantity,
+                'price'         => $unit_price,
                 'zone'          => $zone,
                 'aisle'         => $aisle,
                 'rack'          => $rack,

app/assets/utils/classes/ReportManager.php

@@ -276,13 +276,14 @@ class ReportManager
                     a.product_sku,
                     SUM(a.total_in) AS total_in, 
                     SUM(a.total_out) AS total_out, 
-                    b.min_stock
+                    b.min_stock,
+                    b.cost_price
                 FROM warehouse_balance a
                 LEFT JOIN md_product b 
                     ON a.company_id = b.company_id 
                 AND a.product_sku = b.sku
                 WHERE a.company_id = :company_id
-                GROUP BY a.product_sku, b.min_stock";
+                GROUP BY a.product_sku, b.min_stock, b.cost_price";
         return $this->fetchAll($sql);
     }
 
@@ -324,6 +325,7 @@ class ReportManager
                     mp.min_stock,
                     mp.reorder_point,
                     mp.product_image,
+                    mp.cost_price,
                     ROUND(SUM(wb.total_in) - SUM(wb.total_out), 2) AS balance
                 FROM warehouse_balance wb
                 INNER JOIN md_product mp
@@ -336,7 +338,7 @@ class ReportManager
                   AND mp.reorder_point > 0
                 GROUP BY
                     wb.warehouse_id, wb.product_sku, mw.warehouse_name,
-                    mp.product_name, mp.min_stock, mp.reorder_point, mp.product_image
+                    mp.product_name, mp.min_stock, mp.reorder_point, mp.product_image, mp.cost_price
                 HAVING balance <= mp.reorder_point
                 ORDER BY mp.product_name ASC, mw.warehouse_name ASC";
 
@@ -352,6 +354,7 @@ class ReportManager
                 'product_sku'    =>         $row['product_sku'],
                 'product_name'   =>         $row['product_name'],
                 'product_image'  =>         $row['product_image'],
+                'cost_price'     => (float) ($row['cost_price'] ?? 0),
                 'balance'        => max(0,  round($balance, 2)),
                 'min_stock'      => (float) $row['min_stock'],
                 'reorder_point'  => (float) $row['reorder_point'],
@@ -1407,7 +1410,9 @@ class ReportManager
         $product_name = $product_row['product_name'] ?: $product_sku;
         $product_uom  = $product_row['uom'] ?? '';
 
-        // All transactions for this SKU in range, sorted by date then id
+        // All transactions for this SKU in range, sorted by date then id.
+        // For stock-out rows, si.price is the purchase cost from the source stock-in (via ref_id).
+        // p.cost_price is the product-level fallback when si.price is 0 or ref_id is absent.
         $sth = $this->pdo->prepare(
             "SELECT
                 s.id,
@@ -1421,9 +1426,17 @@ class ReportManager
                 s.rack,
                 ROUND(COALESCE(s.`in`,  0), 2) AS stock_in,
                 ROUND(COALESCE(s.`out`, 0), 2) AS stock_out,
+                ROUND(s.price, 4)              AS price,
+                ROUND(COALESCE(NULLIF(si.price, 0), p.cost_price, 0), 4) AS unit_cost,
                 c.contact_name,
                 s.description
              FROM `{$table}` s
+             LEFT JOIN `{$table}` si
+                 ON  si.id         = s.ref_id
+                 AND s.`out`       > 0
+             LEFT JOIN md_product p
+                 ON  p.company_id  = s.company_id
+                 AND p.sku         = s.product_sku
              LEFT JOIN md_contact c
                  ON  c.company_id  = s.company_id
                  AND c.id          = s.contact_id
@@ -1436,11 +1449,18 @@ class ReportManager
         $sth->execute([':company_id' => $this->companyId, ':sku' => $product_sku, ':date_from' => $date_from, ':date_to' => $date_to]);
         $rows = $sth->fetchAll(PDO::FETCH_ASSOC);
 
-        // Append running_total to each row (carried forward from brought-forward balance)
+        // Append running_total and margin to each row.
+        // Margin is only meaningful for stock-out rows with both sell price and cost.
         $running = $bf_bal;
         foreach ($rows as &$row) {
             $running              += (float)$row['stock_in'] - (float)$row['stock_out'];
             $row['running_total']  = round($running, 2);
+
+            $sell = (float)$row['price'];
+            $cost = (float)$row['unit_cost'];
+            $row['margin'] = ($row['stock_out'] > 0 && $sell > 0)
+                ? round(($sell - $cost) / $sell * 100, 2)
+                : null;
         }
         unset($row);
 

app/assets/utils/classes/StockManager.php

@@ -283,10 +283,10 @@ class StockManager {
 
             $this->pdo->prepare(
                 "INSERT INTO `$table`
-                    (uuid, company_id, `date`, product_sku, `in`, zone, aisle, rack,
+                    (uuid, company_id, `date`, product_sku, `in`, price, zone, aisle, rack,
                     contact_id, `description`, `log`, `type`, lot_number, serial_number, status)
                 VALUES
-                    (:uuid, :company_id, :date, :product_sku, :quantity, :zone, :aisle, :rack,
+                    (:uuid, :company_id, :date, :product_sku, :quantity, :price, :zone, :aisle, :rack,
                     :contact_id, :description, :log, 'in', :lot_number, :serial_number, 0)"
             )->execute([
                 ':uuid'          => $uuid,
@@ -294,6 +294,7 @@ class StockManager {
                 ':date'          => date('Y-m-d H:i:s'),
                 ':product_sku'   => $data['product_sku'],
                 ':quantity'      => $data['quantity'],
+                ':price'         => (float)($data['price'] ?? 0),
                 ':zone'          => $data['zone'],
                 ':aisle'         => $data['aisle'],
                 ':rack'          => $data['rack'],

app/dashboard/low_stock_products.php

@@ -254,7 +254,12 @@
         </td>
         <td class="py-3 text-secondary">${item.product_sku}</td>
         <td class="py-3">${item.warehouse_name}</td>
-        <td class="py-3 ${balance_cls}">${item.balance} <span class="text-muted fw-normal small">${item.uom || 'pcs'}</span></td>
+        <td class="py-3 ${balance_cls}">
+          ${item.balance} <span class="text-muted fw-normal small">${item.uom || 'pcs'}</span>
+          ${item.cost_price > 0
+            ? `<div class="text-muted small fw-normal">Value: ${format_number(item.balance * item.cost_price, 2)}</div>`
+            : ''}
+        </td>
         <td class="py-3">${item.min_stock}</td>
         <td class="py-3">${item.reorder_point}</td>
         <td class="py-3">${badge}</td>

app/ics/manage_stock_in.php

@@ -39,11 +39,17 @@
                 </div>
 
                 <!-- SKU or Product Code -->
-                <div class="mb-3 col-lg-6">
+                <div class="mb-3 col-lg-3">
                   <label for="quantity" class="form-label">Quantity</label>
                   <input type="number" class="form-control" id="quantity" placeholder="Enter quantity" required>
                 </div>
 
+                <!-- Unit Price / COGS -->
+                <div class="mb-3 col-lg-3">
+                  <label for="price" class="form-label">Unit Price <span class="text-muted fw-normal">(optional)</span></label>
+                  <input type="number" class="form-control" id="price" placeholder="0.00" step="0.01" min="0">
+                </div>
+
                 <!-- Lot Number -->
                 <div class="mb-3 col-lg-6">
                   <label for="lot_number" class="form-label">Lot Number <span class="text-muted fw-normal">(optional)</span></label>
@@ -368,7 +374,7 @@
             if (expiryPicker) { expiryPicker.clear(); }
           }
           $('#product_sku').attr('secondary', data.product_sku);
-          $('#product_sku, #quantity').prop('disabled', true);
+          $('#product_sku, #quantity, #price').prop('disabled', true);
           $('button[type=submit]').text('Update');
           $('button[type=reset]').hide();
           if (data.status == 0) {

app/ics/stock_in.php

@@ -59,6 +59,7 @@
                       <th>Lot Number</th>
                       <th>Serial Number</th>
                       <th style="text-align: right;">Quantity</th>
+                      <th style="text-align: right;">Unit Price</th>
                       <th>Source</th>
                       <th class="th_loc_zone">Zone</th>
                       <th class="th_loc_aisle">Aisle</th>
@@ -222,6 +223,7 @@
                 <span class="text-muted small" style="min-width:28px;">${item['uom'] || ''}</span>
               </div>
             </td>
+            <td class="py-3 text-end">${item['price'] > 0 ? format_number(item['price'], 2) : '<span class="text-muted">—</span>'}</td>
             <td class="py-3">${source_cell(item['source'])}</td>
             ${location_cells(item)}
             <td class="py-3">

app/inventory/manage_product.php

@@ -39,10 +39,21 @@
                 </div>
               </div>
               <div class="row">
-                <div class="col-md-4 mb-3">
+                <div class="col-md-3 mb-3">
                   <label for="price" class="form-label">Price</label>
                   <input type="number" class="form-control" id="price" placeholder="0.00" step="0.01" required>
                 </div>
+                <div class="col-md-2 mb-3">
+                  <label for="cost_price" class="form-label">Cost Price <span class="text-muted fw-normal">(COGS)</span></label>
+                  <input type="number" class="form-control" id="cost_price" placeholder="0.00" step="0.01" min="0">
+                </div>
+                <div class="col-md-2 mb-3">
+                  <label class="form-label">Margin</label>
+                  <div class="input-group">
+                    <input type="text" class="form-control" id="margin_display" placeholder="—" disabled>
+                    <span class="input-group-text">%</span>
+                  </div>
+                </div>
                 <div class="col-md-2 mb-3">
                   <label for="uom" class="form-label">UOM</label>
                   <input type="text" class="form-control" id="uom" placeholder="pcs"
@@ -62,7 +73,7 @@
                     <option value="bottle">
                   </datalist>
                 </div>
-                <div class="col-md-3 mb-3">
+                <div class="col-md-2 mb-3">
                   <label for="min_stock" class="form-label">Min Stock</label>
                   <input type="number" class="form-control" id="min_stock" placeholder="0" min="0" required>
                   <div class="invalid-feedback" id="min_stock_error"></div>
@@ -138,6 +149,7 @@
     }
 
     formData.append('keep_files', $('#current_file_label').val())
+    formData.append('cost_price', $('#cost_price').val() || 0)
     formData.append('uom', $('#uom').val() || 'pcs')
 
     return ajax_request({
@@ -209,8 +221,8 @@
         });
 
         $(`button[type=submit]`).text('Update');
-
         $(`button[type=reset]`).hide();
+        update_margin();
 
       }
     });
@@ -267,6 +279,19 @@
   // Live feedback as the user types
   $('#min_stock, #reorder_point').on('input', validate_stock_thresholds);
 
+  function update_margin() {
+    var price      = parseFloat($('#price').val())      || 0;
+    var cost_price = parseFloat($('#cost_price').val()) || 0;
+    if (price > 0) {
+      var margin = (price - cost_price) / price * 100;
+      $('#margin_display').val(margin.toFixed(2));
+    } else {
+      $('#margin_display').val('');
+    }
+  }
+
+  $('#price, #cost_price').on('input', update_margin);
+
   </script>
 
 

app/inventory/product.php

@@ -197,6 +197,8 @@
                       <th width="75px"></th>
                       <th>Product</th>
                       <th>SKU</th>
+                      <th style="text-align: right;">Price / Cost</th>
+                      <th style="text-align: right;">Margin</th>
                       <th>UOM</th>
                       <th style="text-align: right;">Current Stock</th>
                       <th style="text-align: right;">Min Stock</th>
@@ -345,7 +347,7 @@
 
     if (filtered.length === 0) {
       $("table#product > tbody").html(
-        '<tr><td colspan="9" class="text-center py-5 text-muted">No products match your search.</td></tr>'
+        '<tr><td colspan="11" class="text-center py-5 text-muted">No products match your search.</td></tr>'
       );
       return;
     }
@@ -362,6 +364,17 @@
               </td>
               <td class="py-3">${item['product_name']}</td>
               <td class="py-3">${item['sku']}</td>
+              <td class="py-3 text-end">
+                <div>${format_number(item['price'], 2)}</div>
+                <small class="text-muted">${format_number(item['cost_price'], 2)}</small>
+              </td>
+              <td class="py-3 text-end">
+                ${(item['price'] > 0 && item['cost_price'] > 0)
+                  ? `<span class="${((item['price'] - item['cost_price']) / item['price'] * 100) >= 0 ? 'text-success' : 'text-danger'} fw-semibold">
+                      ${format_number((item['price'] - item['cost_price']) / item['price'] * 100, 1)}%
+                     </span>`
+                  : '<span class="text-muted">—</span>'}
+              </td>
               <td class="py-3"><span class="badge bg-light text-secondary border">${item['uom'] || 'pcs'}</span></td>
               <td class="py-3">
                 <div class="d-flex justify-content-end align-items-baseline gap-1">

app/reports/stock_movement.php

@@ -139,6 +139,8 @@
                       <th class="text-end">Stock In</th>
                       <th class="text-end">Stock Out</th>
                       <th>UOM</th>
+                      <th class="text-end">Price / Cost</th>
+                      <th class="text-end">Margin</th>
                       <th class="text-end">Running Total</th>
                     </tr>
                   </thead>
@@ -291,7 +293,7 @@
           .addClass(net >= 0 ? 'text-success' : 'text-danger');
 
         if (!d.skus || d.skus.length === 0) {
-          $('#tbl_body').html('<tr><td colspan="9" class="text-center py-5 text-muted">No movement data found.</td></tr>');
+          $('#tbl_body').html('<tr><td colspan="12" class="text-center py-5 text-muted">No movement data found.</td></tr>');
           return;
         }
 
@@ -391,7 +393,7 @@
 
     // SKU header row
     var header = `<tr class="table-secondary">
-      <td colspan="10" class="py-2 fw-semibold">
+      <td colspan="12" class="py-2 fw-semibold">
         <code>${d.sku}</code>
         <span class="text-muted fw-normal ms-2">${d.product_name}</span>
         <span class="badge bg-light text-secondary border ms-2 small">${d.uom || 'pcs'}</span>
@@ -407,6 +409,8 @@
       <td class="py-2 text-end text-success">${bf_in_val}</td>
       <td class="py-2 text-end text-danger">${bf_out_val}</td>
       <td class="py-2 text-muted small">${d.uom || 'pcs'}</td>
+      <td class="py-2"></td>
+      <td class="py-2"></td>
       <td class="py-2 text-end fw-semibold ${bf_bal_cls}">${fmt(bf.balance)}</td>
     </tr>`;
 
@@ -414,13 +418,28 @@
     var body = '';
     if (rows.length === 0) {
       body = `<tr>
-        <td colspan="9" class="text-center py-2 text-muted fst-italic">No transactions in range.</td>
+        <td colspan="12" class="text-center py-2 text-muted fst-italic">No transactions in range.</td>
       </tr>`;
     } else {
       $.each(rows, function(i, row) {
         var in_val  = row.stock_in  > 0 ? fmt(row.stock_in)  : '<span class="text-muted">—</span>';
         var out_val = row.stock_out > 0 ? fmt(row.stock_out) : '<span class="text-muted">—</span>';
         var rt_cls  = row.running_total >= 0 ? 'text-success' : 'text-danger';
+
+        var price_cell = '<span class="text-muted">—</span>';
+        if (row.stock_in > 0 && parseFloat(row.price) > 0) {
+          price_cell = `<span class="text-success">${fmt(row.price)}</span>`;
+        } else if (row.stock_out > 0 && parseFloat(row.price) > 0) {
+          price_cell = `<div>${fmt(row.price)}</div>
+                        <small class="text-muted">${fmt(row.unit_cost)}</small>`;
+        }
+
+        var margin_cell = '<span class="text-muted">—</span>';
+        if (row.margin !== null && row.margin !== undefined) {
+          var m_cls = row.margin >= 0 ? 'text-success' : 'text-danger';
+          margin_cell = `<span class="${m_cls} fw-semibold">${parseFloat(row.margin).toFixed(1)}%</span>`;
+        }
+
         body += `<tr>
           <td class="py-2">${row.date}</td>
           <td class="py-2">${type_badge[row.type] || row.type}</td>
@@ -431,6 +450,8 @@
           <td class="py-2 text-end text-success">${in_val}</td>
           <td class="py-2 text-end text-danger">${out_val}</td>
           <td class="py-2 text-muted small">${d.uom || 'pcs'}</td>
+          <td class="py-2 text-end">${price_cell}</td>
+          <td class="py-2 text-end">${margin_cell}</td>
           <td class="py-2 text-end fw-semibold ${rt_cls}">${fmt(row.running_total)}</td>
         </tr>`;
       });