import os
import base64
import hashlib
from django.db.models import F, Q
from planetstack.config import Config
from observer.openstacksyncstep import OpenStackSyncStep
from core.models.user import User

class SyncUsers(OpenStackSyncStep):
    provides=[User]
    requested_interval=0

    def fetch_pending(self):
        return User.objects.filter(Q(enacted__lt=F('updated')) | Q(enacted=None))

    def sync_record(self, user):
        name = user.email[:user.email.find('@')]
        user_fields = {'name': name,
                       'email': user.email,
                       'password': hashlib.md5(user.password).hexdigest()[:6],
                       'enabled': True}
        if not user.kuser_id:
            keystone_user = self.driver.create_user(**user_fields)
            user.kuser_id = keystone_user.id
        else:
            self.driver.update_user(user.kuser_id, user_fields)        

        if user.site:
            self.driver.add_user_role(user.kuser_id, user.site.tenant_id, 'user')
            if user.is_admin:
                self.driver.add_user_role(user.kuser_id, user.site.tenant_id, 'admin')
            else:
                # may have admin role so attempt to remove it
                self.driver.delete_user_role(user.kuser_id, user.site.tenant_id, 'admin')

        if user.public_key:
            driver = self.driver.client_driver(caller=user, tenant=user.site.login_base) 
            key_fields =  {'name': user.keyname,
                           'public_key': user.public_key}
            driver.create_keypair(**key_fields)

        user.save()