fix: add add_ingredient_in_taxonomy_field function from Robotoff

openfoodfacts/ingredients.py

@@ -0,0 +1,38 @@
+from openfoodfacts.taxonomy import Taxonomy
+from openfoodfacts.types import JSONType
+
+
+def add_ingredient_in_taxonomy_field(
+    parsed_ingredients: list[JSONType], ingredient_taxonomy: Taxonomy
+) -> tuple[int, int]:
+    """Add the `in_taxonomy` field to each ingredient in `parsed_ingredients`.
+
+    This function is called recursively to add the `in_taxonomy` field to each
+    sub-ingredient. It returns the total number of ingredients and the number
+    of known ingredients (including sub-ingredients).
+
+    :param parsed_ingredients: a list of parsed ingredients, in Product Opener
+        format
+    :param ingredient_taxonomy: the ingredient taxonomy
+    :return: a (total_ingredients_n, known_ingredients_n) tuple
+    """
+    ingredients_n = 0
+    known_ingredients_n = 0
+    for ingredient_data in parsed_ingredients:
+        ingredient_id = ingredient_data["id"]
+        in_taxonomy = ingredient_id in ingredient_taxonomy
+        ingredient_data["in_taxonomy"] = in_taxonomy
+        known_ingredients_n += int(in_taxonomy)
+        ingredients_n += 1
+
+        if "ingredients" in ingredient_data:
+            (
+                sub_ingredients_n,
+                known_sub_ingredients_n,
+            ) = add_ingredient_in_taxonomy_field(
+                ingredient_data["ingredients"], ingredient_taxonomy
+            )
+            ingredients_n += sub_ingredients_n
+            known_ingredients_n += known_sub_ingredients_n
+
+    return ingredients_n, known_ingredients_n