Cafeteria
=========

The context is a cafeteria shop. Consider the orders including a number of drinks consumed, ``'cafe'`` for example, and foods consumed, ``'donut'`` for example.
We need to calculate the price to pay for a given order, with two total figures: the total of drinks and the total of foods.

An **order** is represented as a text (:class:`str`) ended by a dot ``'.'`` with exactly **4 items** separated by coma and space ``', '``, although every item can be anything: a drink, a food or something unknown. Each item comes with three informations separated by space (``' '``):

    - the number of units (positive integer)
    - the name of a product
    - the unit price (a float number)

For instance, ``'2 cafe_llet 1.80, 3 tallat 1.50, 2 donut 1.55, 2 T-shirt 15.0.'``.

To identify whether a *product name* is a drink or a food, two strings with all drink and food names respectively, separated by space (``' '``) are available. For example,

    .. literalinclude:: cafeta_total_calc.test
        :language: python3
        :start-after: --lists-ini
        :end-before: --lists-fi

Names that do not correspond to any drink or food in this listings should just be disregarded.

We wish to get a text indicating the total for drinks and the total for foods to be paid.
The format of this text must be ``'The drinks total is XX€ and the foods total is YY€.'``
where ``XX`` and ``YY`` are strings representing float numbers with those totals respectively.

In the above exemple,
the total of drinks is 8.10 coming from adding the value of 2 ``'cafe_llet'`` s and 3 ``'tallat'`` s. The total of foods is 3.10 for the 2 ``'donut'``. The ``'T-shirt'`` item is disregarded since it is not a food or a drink.

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You are required to deliver the following functions (they have the same grade weight) in the module :mod:`cafeta_module` (file :file:`cafeta_module.py`):

Firstly, an auxiliar function specified as follows:

    .. py:function:: cafeta_total_update(total_drink, total_food, item, drinks, foods)

such that

    **given**

    - *total_drink*, *total_food*, two :class:`float` indicating the totals for drinks and foods respectively processed so far
    - *item*, a :class:`str` with an item from an order in the format described above
    - *drinks*,  a :class:`str` with all drink names separated by space (``' '``)
    - *foods*,  a :class:`str` with all foods names separated by space (``' '``)


    **returns** two :class:`float` with the totals for drinks and foods properly updated by adding the values for the product and amount in *item* according to whether it is a drink or a food (hence, one of the totals will remain the same)

For example:

    .. literalinclude:: cafeta_total_update.test
        :language: python3
        :start-after: --ini
        :end-before: --fi

Doctests are available in the :download:`cafeta_total_update.test` file.

------------------------------------------------------------------------------------------

Secondly, the main function:

    .. py:function:: cafeta_total_calc(order, drinks, foods)

such that

    **given**

    - *order* a :class:`str` with the order format described above.
    - *drinks*,  a :class:`str` with all drink names separated by space (``' '``)
    - *foods*,  a :class:`str` with all foods names separated by space (``' '``)

    **returns** a :class:`str` indicating the totals for drinks and foods corresponding to this order in the format described above. Both totals must be rounded to 2 decimals.

For instance,

    .. literalinclude:: cafeta_total_calc.test
        :language: python3
        :start-after: --ini
        :end-before: --fi


Doctests are available in the :download:`cafeta_total_calc.test` file.


.. warning:: This function must be implemented by calling the previous function.