"""Users (principals) for the WAeUP portal.
"""
import grok
from waeup.sirp.authentication import Account
from waeup.sirp.interfaces import IUserContainer

class UserContainer(grok.Container):
    """A container for principals.

    See interfaces.py and users.txt for extensive description.
    """
    grok.implements(IUserContainer)
    grok.require('waeup.manageUsers')

    def addUser(self, name, password, title=None, description=None, roles=[]):
        """Add a new Account instance, created from parameters.
        """
        if title is None:
            title = name
        if description is None:
            description = title
        self[name] = Account(name, password, title, description, roles)

    def addAccount(self, account):
        """Add the account passed.
        """
        self[account.name] = account
        
    def delUser(self, name):
        """Delete user, if an account with the given name exists.

        Do not complain, if the name does not exist.
        """
        if name in self.keys():
            del self[name]