Add model functions needed for plugins

- getDateAdded and getDatesAdded in Inventory.php
- GetDistinctCategories in Item.php
- GetBulkItemQuantities in Item_quantity.php
- GetBulkInfo in Item_taxes.php
- GetStockLocationsByItem in Stock_location.php

Signed-off-by: objec <objecttothis@gmail.com>

app/Models/Inventory.php

@@ -60,6 +60,39 @@ class Inventory extends Model
         return $builder->get();
     }
 
+    /**
+     * Retrieves the earliest transaction date (date added) for an item.
+     *
+     * @param int $itemId
+     * @return string|null The earliest trans_date in Y-m-d H:i:s format, or null if no transactions exist
+     */
+    public function getDateAdded(int $itemId): ?string
+    {
+        $result = $this->db->table('inventory')
+            ->selectMin('trans_date', 'date_added')
+            ->where('trans_items', $itemId)
+            ->get()
+            ->getRowArray();
+
+        return $result['date_added'] ?? null;
+    }
+
+    public function getDatesAdded(array $itemIds): array
+    {
+        if (empty($itemIds)) {
+            return [];
+        }
+
+        $results = $this->db->table('inventory')
+            ->select('trans_items, MIN(trans_date) AS date_added')
+            ->whereIn('trans_items', $itemIds)
+            ->groupBy('trans_items')
+            ->get()
+            ->getResultArray();
+
+        return array_column($results, 'date_added', 'trans_items');
+    }
+
     /**
      * @param int $item_id ID number for the item to have quantity reset.
      * @return bool|int|string The row id of the inventory table on insert or false on failure

app/Models/Item.php

@@ -303,6 +303,22 @@ class Item extends Model
         return $builder->get();
     }
 
+    public function getDistinctCategories(): array
+    {
+        $results = $this->db->table('items')
+            ->select('category')
+            ->where('deleted', 0)
+            ->where('category !=', '')
+            ->where('category IS NOT NULL')
+            ->distinct()
+            ->orderBy('category', 'ASC')
+            ->get()
+            ->getResultArray();
+
+        $categories = array_column($results, 'category');
+        return array_combine($categories, $categories);
+    }
+
     /**
      * Gets information about a particular item
      */

app/Models/Item_quantity.php

@@ -83,6 +83,27 @@ class Item_quantity extends Model
         return $result;
     }
 
+    /**
+     * Get all the quantities of the given items. Used by plugins. Do not remove from code.
+     *
+     * @param array $itemIds
+     * @param bool $getDeleted
+     * @return array
+     */
+    public function getBulkItemQuantities(array $itemIds, bool $getDeleted = false): array
+    {
+        $builder = $this->db->table('item_quantities');
+        $builder->whereIn('item_quantities.item_id', $itemIds);
+
+        if (!$getDeleted) {
+            $builder->join('stock_locations', 'stock_locations.location_id = item_quantities.location_id');
+            $builder->where('stock_locations.deleted', 0);
+            $builder->select('item_quantities.*');
+        }
+
+        return $builder->get()->getResultArray();
+    }
+
     /**
      * changes to quantity of an item according to the given amount.
      * if $quantity_change is negative, it will be subtracted,

app/Models/Item_taxes.php

@@ -30,6 +30,28 @@ class Item_taxes extends Model
         return $builder->get()->getResultArray();
     }
 
+    /**
+     * Get all the taxes of given items. Used by plugins. Do not remove from code.
+     *
+     * @param array $itemIds
+     * @param bool $getDeleted
+     * @return array
+     */
+    public function getBulkInfo(array $itemIds, bool $getDeleted = false): array
+    {
+        $builder = $this->db->table($this->table);
+        $builder->whereIn('items_taxes.item_id', $itemIds);
+
+        if (!$getDeleted) {
+            $builder->join('items', 'items.item_id = items_taxes.item_id');
+            $builder->where('items.deleted', 0);
+            $builder->select('items_taxes.*');
+        }
+
+        return $builder->get()->getResultArray();
+    }
+
+
     /**
      * Inserts or updates an item's taxes
      */

app/Models/Stock_location.php

@@ -260,6 +260,19 @@ class Stock_location extends Model
         }
     }
 
+    public function getStockLocationsByItem(int $itemId): array
+    {
+        return $this->db->table('item_quantities')
+            ->select('stock_locations.location_name, item_quantities.quantity')
+            ->join('stock_locations', 'stock_locations.location_id = item_quantities.location_id')
+            ->where('item_quantities.item_id', $itemId)
+            ->where('stock_locations.deleted', 0)
+            ->where('item_quantities.quantity >', 0)
+            ->orderBy('item_quantities.quantity', 'DESC')
+            ->get()
+            ->getResultArray();
+    }
+
     /**
      * Deletes one item
      * @param int|null $location_id