[IMP] sale_loyalty_order_suggestion: Add hook method

Add hook method to help communicate this module with other modules that
extend it by returning records from programs whose rules are based on
products before filtering by order product and avoid extra modules that
will not provide any functionality.

TT48349

sale_loyalty_order_suggestion/models/sale_order.py

@@ -73,19 +73,28 @@ def _get_available_programs(self):
             ]
         return programs.filtered(lambda p: p.id not in programs_to_delete)
 
-    def _available_programs(self):
-        self.ensure_one()
+    def _filter_programs_by_rules_with_products(self):
+        """Hook method. The objective of this method is to filter by rules that establish
+        products as criteria in a loyalty program and then in other methods make the
+        filtering that corresponds to each functionality."""
         valid_programs = self._get_available_programs()
         # Filters programs that have rules with minimum_qty > 0
         programs_with_minimum_qty = valid_programs.filtered(
             lambda x: any(rule.minimum_qty > 0 for rule in x.rule_ids)
         )
+        return programs_with_minimum_qty
+
+    def _available_programs(self):
+        self.ensure_one()
+        filtered_programs = self._filter_programs_by_rules_with_products()
         programs = self.env["loyalty.program"]
-        if programs_with_minimum_qty:
+        if filtered_programs:
             product_id = self.env.context.get("product_id")
-            programs += programs_with_minimum_qty.filtered(
+            programs += filtered_programs.filtered(
                 lambda x: any(
-                    product_id in rule._get_valid_products().ids for rule in x.rule_ids
+                    product_id in rule._get_valid_products().ids
+                    and rule.minimum_qty > 0
+                    for rule in x.rule_ids
                 )
             )
         return programs