[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

@@ -725,7 +725,7 @@ 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 from a given location.
@@ -734,13 +734,10 @@ def get_inventory(self):
         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:
+        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.
 
-        URL parameters for GET:
-            - location_id (int): The ID of the stock location to filter inventory by.
-
         JSON response:
             - message (str): A message indicating the action performed.
             - inventory_data (list of dict): A list of dictionaries containing the inventory details for each product, including:
@@ -752,12 +749,11 @@ def get_inventory(self):
         Returns:
             dict: A dictionary with a message and the inventory details of the products.
         """
-        location_id = request.params.get("location_id")
-
-        location = request.env["stock.location"].browse(location_id).exists()
+        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 request.httprequest.method == 'POST':
-            sku = request.jsonrequest.get("sku")
+        if sku:
             domain = [("default_code", "=", sku)]
         else:
             domain = [("default_code", "!=", False)]
@@ -766,8 +762,8 @@ def get_inventory(self):
 
         inventory_data = []
         for product in products:
-            quant = request.env["stock.quant"].search([("product_id", "=", product.id), ("location_id", "=", location_id)])
-            if quant:
+            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,