import grok
from zope import schema
from zope.interface import Attribute, invariant, Invalid
from waeup.kofa.interfaces import (IKofaObject, IKofaContainer, validate_email)
from waeup.kofa.university.interfaces import ICertificate
from waeup.kofa.university.certificatescontainer import CertificatesContainer
from waeup.kofa.university.faculty import (
    Faculty, FacultyFactory)
from waeup.kofa.university.department import (
    Department, DepartmentFactory)
from waeup.kofa.university.certificate import (
    Certificate, CertificateFactory)
from waeup.kofa.university.vocabularies import (
    course_levels,
    CourseSource,
    StudyModeSource,
    AppCatSource,
    InstTypeSource,
    SemesterSource,
    )


from waeup.kofa.interfaces import MessageFactory as _


class IFaculty(IKofaContainer):
    """Representation of a university faculty.
    """

    code = schema.TextLine(
        title = _(u'Code'),
        default = u'NA',
        required = True,
        )

    title = schema.TextLine(
        title = _(u'Name of faculty'),
        default = u'Unnamed',
        required = True,
        )

    title_prefix = schema.Choice(
        title = _(u'Name prefix'),
        default = u'faculty',
        source = InstTypeSource(),
        required = True,
        )

    address = schema.Text(
        title = _(u'Permanent Address'),
        required = False,
        )

    email = schema.ASCIILine(
        title = _(u'Email'),
        required = False,
        constraint=validate_email,
        )

class CustomFaculty(Faculty):
    """A university faculty.
    """
    grok.implements(IFaculty)

    local_roles = [
        'waeup.local.DepartmentOfficer',
        'waeup.local.DepartmentManager',
        ]

    def __init__(self,
                 title=u'Unnamed Faculty',
                 title_prefix=u'faculty',
                 address=None,
                 email=None,
                 code=u'NA', **kw):
        super(Faculty, self).__init__(**kw)
        self.title = title
        self.title_prefix = title_prefix
        self.code = code
        self.address = address
        self.email = email

class CustomFacultyFactory(FacultyFactory):
    """A factory for faculty containers.
    """

    def __call__(self, *args, **kw):
        return CustomFaculty()

    def getInterfaces(self):
        return implementedBy(CustomFaculty)

class IDepartment(IKofaObject):
    """Representation of a department.
    """
    code = schema.TextLine(
        title = _(u'Code'),
        default = u'NA',
        required = True,
        )

    title = schema.TextLine(
        title = _(u'Name of department'),
        default = u'Unnamed',
        required = True,
        )

    title_prefix = schema.Choice(
        title = _(u'Name prefix'),
        source = InstTypeSource(),
        default = u'department',
        required = True,
        )

    address = schema.Text(
        title = _(u'Permanent Address'),
        required = False,
        )

    email = schema.ASCIILine(
        title = _(u'Email'),
        required = False,
        constraint=validate_email,
        )

    certificates = Attribute("A container for certificates.")

class CustomDepartment(Department):
    """A university department.
    """
    grok.implements(IDepartment)

    local_roles = [
        'waeup.local.ApplicationsManager',
        'waeup.local.DepartmentOfficer',
        'waeup.local.DepartmentManager',
        ]

    def __init__(self,
                 title=u'Unnamed Department',
                 title_prefix=u'department',
                 address=None,
                 email=None,
                 code=u"NA", **kw):
        super(Department, self).__init__(**kw)
        self.title = title
        self.title_prefix = title_prefix
        self.code = code
        self.certificates = CertificatesContainer()
        self.certificates.__parent__ = self
        self.certificates.__name__ = 'certificates'
        self.score_editing_disabled = False
        self.address = address
        self.email = email

class CustomDepartmentFactory(DepartmentFactory):
    """A factory for department containers.
    """

    def __call__(self, *args, **kw):
        return CustomDepartment(*args, **kw)

    def getInterfaces(self):
        """Get interfaces of objects provided by this factory.
        """
        return implementedBy(CustomDepartment)

class CustomCertificate(Certificate):
    """A certificate.
    """
    grok.implements(ICertificate)

    local_roles = [
        'waeup.local.DepartmentOfficer',
        ]

class CustomCertificateFactory(CertificateFactory):
    """A factory for certificates.
    """

    def __call__(self, *args, **kw):
        return CustomCertificate(*args, **kw)

    def getInterfaces(self):
        return implementedBy(CustomCertificate)