Source code for certificates.business_rules

"""Business rules for certificates."""

from common.business_rules import DescriptionsRules
from common.business_rules import PreventDeleteIfInUse
from common.business_rules import UniqueIdentifyingFields
from common.business_rules import ValidityPeriodContained


class CET1(UniqueIdentifyingFields):
    """The type of the certificate must be unique."""


class CET2(PreventDeleteIfInUse):
    """The certificate type cannot be deleted if it is used in a certificate."""


class CE2(UniqueIdentifyingFields):
    """The combination of certificate type and code must be unique."""

    identifying_fields = ("sid", "certificate_type")


class CE4(ValidityPeriodContained):
    """If a certificate is used in a measure condition then the validity periods
    of the certificate must span the validity period of the measure."""

    contained_field_name = "measurecondition__dependent_measure"


class CE5(PreventDeleteIfInUse):
    """The certificate cannot be deleted if it is used in a measure
    condition."""


class CE6(DescriptionsRules):
    """
    At least one description record is mandatory.

    The start date of the first description period must be equal to the start
    date of the certificate. No two associated description periods for the same
    certificate and language may have the same start date. The validity period
    of the certificate must span the validity period of the certificate
    description.
    """

    model_name = "certificate"


class CE7(ValidityPeriodContained):
    """The validity period of the certificate type must span the validity period
    of the certificate."""

    container_field_name = "certificate_type"