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# Author: Neil Soman neil@eucalyptus.com
#         Mitch Garnaat mgarnaat@eucalyptus.com

from boto.roboto.awsqueryrequest import AWSQueryRequest
from boto.roboto.param import Param
import euca2ools.commands.euare
import euca2ools.commands.euare.putuserpolicy
import euca2ools.utils


class AddUserPolicy(AWSQueryRequest):

    ServiceClass = euca2ools.commands.euare.Euare

    Description = 'Add a new policy to a user'
    Params = [
        Param(name='UserName',
              short_name='u',
              long_name='user-name',
              ptype='string',
              optional=False,
              request_param=False,
              doc=""" Name of the user to associate the policy with. """),
        Param(name='PolicyName',
              short_name='p',
              long_name='policy-name',
              ptype='string',
              optional=False,
              request_param=False,
              doc=""" Name of the policy document. """),
        Param(name='Effect',
              short_name='e',
              long_name='effect',
              ptype='enum',
              choices=['Allow', 'Deny'],
              optional=False,
              request_param=False,
              doc="The value for the policy's Effect element."),
        Param(name='Action',
              short_name='a',
              long_name='action',
              ptype='string',
              optional=True,
              request_param=False,
              doc="The value for the policy's Action element"),
        Param(name='Resource',
              short_name='r',
              long_name='resource',
              ptype='string',
              optional=True,
              request_param=False,
              doc="The value for the policy's Resource element."),
        Param(name='output',
              short_name='o',
              long_name='output',
              ptype='boolean',
              optional=True,
              doc='Causes the output to include the JSON policy document created for you'),
        Param(name='DelegateAccount',
              short_name=None,
              long_name='delegate',
              ptype='string',
              optional=True,
              doc="""[Eucalyptus extension] Process this command as if the administrator of the specified account had run it. This option is only usable by cloud administrators.""")]

    def build_policy(self):
        s = '{"Effect":"%s", "Action":["%s"], "Resource":["%s"]}' % (self.effect,
                                                                     self.action,
                                                                     self.resource)
        p = '{"Version":"2008-10-17","Statement":[%s]}' % s
        return p

    def cli_formatter(self, data):
        if self.cli_options.output:
            print self.policy

    def main(self, **args):
        self.process_args()
        self.user_name = self.cli_options.user_name
        self.policy_name = self.cli_options.policy_name
        self.effect = self.cli_options.effect
        if self.cli_options.action:
            self.action = self.cli_options.action
        else:
            self.action = '*'
        if self.cli_options.resource:
            self.resource = self.cli_options.resource
        else:
            self.resource = '*'
        self.policy = self.build_policy()
        obj = euca2ools.commands.euare.putuserpolicy.PutUserPolicy()
        return obj.main(user_name=self.user_name, policy_name=self.policy_name,
                        policy_document=self.policy,
                        delegate=self.args.get('delegate'))

    def main_cli(self):
        euca2ools.utils.print_version_if_necessary()
        self.do_cli()
