:mod:`waeup.sirp.accesscodes.accesscodes` -- access codes (aka PINs)
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.. module:: waeup.sirp.accesscodes.accesscodes

Components that represent access codes and related.

.. :doctest:

Access codes are created as parts of batches. We therefore have to
create a batch first.

Here we create a batch of three entries, with a cost of ``12.12`` per
code, the batch prefix ``APP``, batch number ``10``, creator ID
``Fred`` and some arbitrary creation date:

    >>> import datetime
    >>> from waeup.sirp.accesscodes.accesscodes import AccessCodeBatch
    >>> batch = AccessCodeBatch(
    ...   datetime.datetime(2009, 12, 23), 'Fred','APP', 12.12, 3, num=10)

The entries of a batch have to be created manually. This is, because
we cannot add persistent objects in a still not persisted container:

    >>> batch.createEntries()

Now we have three accesscodes stored in the batch:

    >>> sorted(list(batch.items()))
    [(u'0', <waeup.sirp...AccessCode object at 0x...), ...]

As we can see, access codes entries can be found in a batch by their
(stringified) serial number.

Each accesscode has a representation:

    >>> ac = batch['0']
    >>> ac.representation
    'APP-10-<10-DIGITS>'

The main point about a batch is that it can act as a dictionary for
the generated access codes:

    >>> ac_codes = list(batch.values())
    >>> [x.representation for x in ac_codes]
    ['APP-10-...', 'APP-10-...', 'APP-10-...']

`Accesscode` and `AccessCodeBatch` classes implement the respective
interfaces:

    >>> from waeup.sirp.accesscodes.accesscodes import (
    ...   AccessCode, AccessCodeBatch)
    >>> from waeup.sirp.accesscodes.interfaces import(
    ...   IAccessCode, IAccessCodeBatch)
    >>> from zope.interface.verify import verifyClass
    >>> verifyClass(IAccessCode, AccessCode)
    True

    >>> verifyClass(IAccessCodeBatch, AccessCodeBatch)
    True