Lot, Serial, ExpiryDate

app/ics/manage_stock_in.php

@@ -44,7 +44,23 @@
                   <input type="number" class="form-control" id="quantity" placeholder="Enter quantity" required>
                 </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>
+                  <input type="text" class="form-control lot_search" id="lot_number" placeholder="Type to search or enter new lot..." autocomplete="off">
+                </div>
 
+                <!-- Expiry Date (only relevant when lot_number is set) -->
+                <div class="mb-3 col-lg-6">
+                  <label for="expiry_date" class="form-label">Expiry Date <span class="text-muted fw-normal">(optional)</span></label>
+                  <input type="text" class="form-control" id="expiry_date" placeholder="DD/MM/YYYY" autocomplete="off">
+                </div>
+
+                <!-- Serial Number -->
+                <div class="mb-3 col-lg-6">
+                  <label for="serial_number" class="form-label">Serial Number <span class="text-muted fw-normal">(optional)</span></label>
+                  <input type="text" class="form-control" id="serial_number" placeholder="Enter serial number">
+                </div>
 
                 <!-- Warehouse -->
                 <div class="mb-3 col-lg-6">
@@ -79,7 +95,6 @@
                   <input type="text" class="form-control contact_search" id="contact" placeholder="Enter contact name">
                 </div>
 
-
                 <!-- Notes / Description -->
                 <div class="mb-3 col-lg-12">
                   <label for="description" class="form-label">Notes / Description</label>
@@ -111,7 +126,10 @@
       checkRequired: 1,
       debugMode: 0,
       data: {
-        "contact_id": $("#contact").attr('data-id')
+        "contact_id": $("#contact").attr('data-id'),
+        "lot_number":    $("#lot_number").val(),
+        "expiry_date":   $("#expiry_date").val(),
+        "serial_number": $("#serial_number").val()
       },
       action: 'manage',
       onSuccess: function(res) {
@@ -271,6 +289,16 @@
                 .attr('data-id', data.contact_id);
 
               $('#product_name').val(data.product_name);
+              $('#lot_number').val(data.lot_number || '');
+              $('#serial_number').val(data.serial_number || '');
+              if (data.lot_number) {
+                if (expiryPicker) { expiryPicker.setDate(data.expiry_date || '', true, 'Y-m-d'); }
+                $('#expiry_date').prop('disabled', true).attr('title', 'Expiry date is locked for existing lots')
+                  .val(data.expiry_date);
+                if (expiryPicker && expiryPicker.altInput) { expiryPicker.altInput.disabled = true; }
+              } else {
+                if (expiryPicker) { expiryPicker.clear(); }
+              }
               $('#product_sku').attr('secondary', data.product_sku);
 
               $('#product_sku,#quantity').prop('disabled', true);
@@ -291,16 +319,80 @@
   }
 
 
+  // ── Prefill for restock flow (coming from low-stock-products.php) ────
+  function prefill_from_restock() {
+
+    var params = new URLSearchParams(window.location.search);
+    var sku    = params.get('sku');
+    var name   = params.get('name');
+    var qty    = params.get('qty');
+    var wh     = params.get('wh');
+
+    // Not a restock flow — nothing to prefill
+    if (!sku) return false;
+
+    // Product fields (locked — the point of restock is this specific SKU)
+    $('#product_sku')
+      .val(sku)
+      .attr('secondary', sku)
+      .prop('disabled', true);
+
+    $('#product_name')
+      .val(name || '')
+      .attr('secondary', name || '');
+      // already disabled in markup
+
+    // Suggested quantity (prefilled value only; user can still edit)
+    if (qty) {
+      $('#quantity').val(qty);
+    }
+
+    // Warehouse: lock it (can't restock to a different warehouse than the one that's low)
+    if (wh) {
+      $('#warehouse').val(wh).prop('disabled', true);
+
+      // Chain-load location selects for the locked warehouse.
+      // Unlike edit mode, we DON'T preselect zone/aisle/rack — the user picks.
+      retrieve_zone('to', function() {
+        retrieve_aisle('to', function() {
+          retrieve_rack('to');
+        });
+      });
+    }
+
+    return true;
+  }
+
 
   $(async function() {
     try {
       await retrieve_warehouse('to');
       await retrieve_for_edit();
+
+      <?php if(!empty($_GET["sku"])){ ?>
+      prefill_from_restock();
+      <?php } ?>
     } catch (e) {
       console.log(e);
     }
   });
 
+  // ── Flatpickr: display dd/mm/yyyy, send yyyy-mm-dd to API ──────────
+  var expiryPicker = flatpickr("#expiry_date", {
+    dateFormat: "Y-m-d",      // actual value stored in input (sent to API)
+    altInput:   true,          // show a separate visible input
+    altFormat:  "d/m/Y",       // visible format: 28/04/2026
+    allowInput: true,
+    onReady: function(_, __, fp) {
+      // Apply Bootstrap form-control class to the alt input
+      fp.altInput.classList.add("form-control");
+    },
+    onChange: function(_, dateStr) {
+      // If lot is new (not existing), keep expiry_date unlocked
+    }
+  });
+
+
   <?php if(empty($_GET["id"])){ ?>
   $("select#warehouse").change(function() {
     retrieve_zone('to');