from django.db import models

import boards.models.post

__author__ = 'neko259'

BAN_REASON_AUTO = 'Auto'
BAN_REASON_MAX_LENGTH = 200


class Ban(models.Model):

    class Meta:
        app_label = 'boards'

    ip = models.GenericIPAddressField()
    reason = models.CharField(default=BAN_REASON_AUTO,
                              max_length=BAN_REASON_MAX_LENGTH)
    can_read = models.BooleanField(default=True)

    def __str__(self):
        return self.ip


class NotificationManager(models.Manager):
    def get_notification_posts(self, usernames: list, last: int = None):
        lower_names = [username.lower() for username in usernames]
        posts = boards.models.post.Post.objects.filter(
                notification__name__in=lower_names).distinct()
        if last is not None:
            posts = posts.filter(id__gt=last)
        posts = posts.order_by('-id')

        return posts


class Notification(models.Model):

    class Meta:
        app_label = 'boards'

    objects = NotificationManager()

    post = models.ForeignKey('Post')
    name = models.TextField()