from PLC.Faults import *
from PLC.Method import Method
from PLC.Parameter import Parameter, Mixed
from PLC.Addresses import Address, Addresses
from PLC.Auth import Auth
from PLC.Sites import Site, Sites

can_update = lambda (field, value): field in \
             ['line1', 'line2', 'line3',
              'city', 'state', 'postalcode', 'country']

class AddSiteAddress(Method):
    """
    Adds a new address to a site. Fields specified in
    address_fields are used; some are not optional.

    PIs may only add addresses to their own sites.

    Returns the new address_id (> 0) if successful, faults otherwise.
    """

    roles = ['admin', 'pi']

    address_fields = dict(filter(can_update, Address.fields.items()))

    accepts = [
        Auth(),
        Mixed(Site.fields['site_id'],
              Site.fields['login_base']),
        address_fields
        ]

    returns = Parameter(int, 'New address_id (> 0) if successful')

    def call(self, auth, site_id_or_login_base, address_fields):
        address_fields = dict(filter(can_update, address_fields.items()))

        # Get associated site details
        sites = Sites(self.api, [site_id_or_login_base])
        if not sites:
            raise PLCInvalidArgument, "No such site"
        site = sites[0]

        if 'admin' not in self.caller['roles']:
            if site['site_id'] not in self.caller['site_ids']:
                raise PLCPermissionDenied, "Address must be associated with one of your sites"

        address = Address(self.api, address_fields)
        address.sync(commit = False)
        site.add_address(address, commit = True)

        # Logging variables
        self.event_objects = {'Site': [site['site_id']],
                              'Address': [address['address_id']]}
        self.message = 'Address %d assigned to Site %d' % \
                (address['address_id'], site['site_id'])

        return address['address_id']