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from optparse import make_option

from django.core.management.base import BaseCommand, CommandError

from django.contrib.auth.models import Group

from django.core.exceptions import ValidationError

from astakos.im.models import AstakosUser

from ._common import remove_user_permission, add_user_permission

class Command(BaseCommand):

    args = "<user ID>"

    help = "Modify a user's attributes"

    option_list = BaseCommand.option_list + (

        make_option('--invitations',

                    dest='invitations',

                    metavar='NUM',

                    help="Update user's invitations"),

        make_option('--level',

                    dest='level',

                    metavar='NUM',

                    help="Update user's level"),

        make_option('--password',

                    dest='password',

                    metavar='PASSWORD',

                    help="Set user's password"),

        make_option('--renew-token',

                    action='store_true',

                    dest='renew_token',

                    default=False,

                    help="Renew the user's token"),

        make_option('--renew-password',

                    action='store_true',

                    dest='renew_password',

                    default=False,

                    help="Renew the user's password"),

        make_option('--set-admin',

                    action='store_true',

                    dest='admin',

                    default=False,

                    help="Give user admin rights"),

        make_option('--set-noadmin',

                    action='store_true',

                    dest='noadmin',

                    default=False,

                    help="Revoke user's admin rights"),

        make_option('--set-active',

                    action='store_true',

                    dest='active',

                    default=False,

                    help="Change user's state to inactive"),

        make_option('--set-inactive',

                    action='store_true',

                    dest='inactive',

                    default=False,

                    help="Change user's state to inactive"),

        make_option('--add-group',

                    dest='add-group',

                    help="Add user group"),

        make_option('--delete-group',

                    dest='delete-group',

                    help="Delete user group"),

        make_option('--add-permission',

                    dest='add-permission',

                    help="Add user permission"),

        make_option('--delete-permission',

                    dest='delete-permission',

                    help="Delete user permission"),

    )

    def handle(self, *args, **options):

        if len(args) != 1:

            raise CommandError("Please provide a user ID")

        if args[0].isdigit():

            user = AstakosUser.objects.get(id=int(args[0]))

        else:

            raise CommandError("Invalid ID")

        if not user:

            raise CommandError("Unknown user")

        if options.get('admin'):

            user.is_superuser = True

        elif options.get('noadmin'):

            user.is_superuser = False

        if options.get('active'):

            user.is_active = True

        elif options.get('inactive'):

            user.is_active = False

        invitations = options.get('invitations')

        if invitations is not None:

            user.invitations = int(invitations)

        groupname = options.get('add-group')

        if groupname is not None:

            try:

                group = Group.objects.get(name=groupname)

                user.groups.add(group)

            except Group.DoesNotExist, e:

                self.stdout.write(

                    "Group named %s does not exist\n" % groupname)

        groupname = options.get('delete-group')

        if groupname is not None:

            try:

                group = Group.objects.get(name=groupname)

                user.groups.remove(group)

            except Group.DoesNotExist, e:

                self.stdout.write(

                    "Group named %s does not exist\n" % groupname)

        pname = options.get('add-permission')

        if pname is not None:

            try:

                r, created = add_user_permission(user, pname)

                if created:

                    self.stdout.write(

                        'Permission: %s created successfully\n' % pname)

                if r > 0:

                    self.stdout.write(

                        'Permission: %s added successfully\n' % pname)

                elif r == 0:

                    self.stdout.write(

                        'User has already permission: %s\n' % pname)

            except Exception, e:

                raise CommandError(e)

        pname = options.get('delete-permission')

        if pname is not None and not user.has_perm(pname):

            try:

                r = remove_user_permission(user, pname)

                if r < 0:

                    self.stdout.write(

                        'Invalid permission codename: %s\n' % pname)

                elif r == 0:

                    self.stdout.write('User has not permission: %s\n' % pname)

                elif r > 0:

                    self.stdout.write(

                        'Permission: %s removed successfully\n' % pname)

            except Exception, e:

                raise CommandError(e)

        level = options.get('level')

        if level is not None:

            user.level = int(level)

        password = options.get('password')

        if password is not None:

            user.set_password(password)

        password = None

        if options['renew_password']:

            password = AstakosUser.objects.make_random_password()

            user.set_password(password)

        if options['renew_token']:

            user.renew_token()

        try:

            user.save()

        except ValidationError, e:

            raise CommandError(e)

        if password:

            self.stdout.write('User\'s new password: %s\n' % password)