[IMP] api: Filter inventory by location and SKU

Modified the get_inventory endpoint to allow filtering of inventory based on a given location and optionally by SKU.
This enhancement improves the ability to retrieve inventory details specific to a stock location and a product SKU,
providing more targeted and relevant data.

This change ensures that users can query inventory data specific to a particular stock location and product SKU, enhancing
the accuracy and usefulness of the inventory information provided by the endpoint.

Closes #25

hantec_api_ecommerce/controllers/main.py

@@ -725,16 +725,18 @@ def send_message_sale_order(self, order=False):
         return {
             "message": f"Message successfully posted in sale order with ID: {order.id}."
         }
-
+            
     @route(["/get_inventory", "/get_inventory_by_sku"], methods=["POST", "GET"], type="json", auth="user")
     def get_inventory(self):
-        """Retrieves the inventory details for all products with a SKU or a specific product based on its SKU.
+        """Retrieves the inventory details for all products with a SKU or a specific product based on its SKU from a given location.
 
         This function searches for all products in the Odoo database that have a SKU (default_code not null)
-        or searches for a product using the provided SKU and returns their inventory details in a JSON response.
+        or searches for a product using the provided SKU, and returns their inventory details from a given location
+        in a JSON response.
 
         JSON request body for POST (if applicable):
             - sku (str, optional): The SKU of the product to search for.
+            - location_id (int): The ID of the stock location to filter inventory by.
 
         JSON response:
             - message (str): A message indicating the action performed.
@@ -747,19 +749,32 @@ def get_inventory(self):
         Returns:
             dict: A dictionary with a message and the inventory details of the products.
         """
-        if request.httprequest.method == 'POST':
-            sku = request.jsonrequest.get("sku")
-            products = request.env["product.product"].search([("default_code", "=", sku)])
+        location_id = request.jsonrequest.get("location_id") or request.params.get("location_id")
+        location = request.env["stock.location"].browse(int(location_id)).exists()
+        sku = request.jsonrequest.get("sku") if request.httprequest.method == 'POST' else request.params.get("sku")
+
+        if sku:
+            domain = [("default_code", "=", sku)]
         else:
-            products = request.env["product.product"].search([("default_code", "!=", False)])
+            domain = [("default_code", "!=", False)]
+
+        products = request.env["product.product"].search(domain)
 
-        product_fields = ["name", "default_code", "qty_available", "virtual_available"]
-        inventory_list = products.read(product_fields)
+        inventory_data = []
+        for product in products:
+            quants = request.env["stock.quant"].search([("product_id", "=", product.id), ("location_id", "=", location_id)])
+            for quant in quants:
+                inventory_data.append({
+                    "name": product.name,
+                    "default_code": product.default_code,
+                    "qty_available": quant.quantity,
+                    "virtual_available": product.virtual_available,
+                })
 
         return {
             "message": "Inventory data retrieved",
-            "inventory_data": inventory_list,
-        }    
+            "inventory_data": inventory_data,
+        }
 
     @route('/get_states/<model("res.country"):country>', methods=["GET"], type="json", auth="user")
     def get_states(self, country):