# -*- coding: utf-8 -*-

"""
Recalculate Mahjong Rankings...
"""

from django.core.management.base import BaseCommand

from mahjong_ranking import LOGGER
from mahjong_ranking import models


class Command(BaseCommand):
    """ Recalculate all Kyu/Dan Rankings """

    help = "Recalculate all Kyu/Dan Rankings"

    def handle(self, *args, **options):
        old_attr = {'dan': None, 'dan_points': None,
                    'kyu': None, 'kyu_points': None, 'won_hanchans': None,
                    'good_hanchans': None, 'hanchan_count': None}
        for ranking in models.KyuDanRanking.objects.all():
            old_attr = {attr: getattr(ranking, attr) for attr in old_attr.keys()}
            ranking.recalculate()
            for attr, old_value in old_attr.items():
                if getattr(ranking, attr) != old_value:
                    LOGGER.warning(
                        "%(user)s recalc shows differences in %(attr)s! old: %(old)d, new: %(new)d",
                        {'user': ranking.user, 'attr': attr,
                         'old': old_value, 'new': getattr(ranking, attr)}
                    )