from django.db import models
from auditlog.models import AuditLogHistoryField
from auditlog.registry import auditlog


class SimpleModel(models.Model):
    """
    A simple model with no special things going on.
    """

    text = models.TextField(blank=True)
    boolean = models.BooleanField(default=False)
    integer = models.IntegerField(blank=True, null=True)
    datetime = models.DateTimeField(auto_now=True)

    history = AuditLogHistoryField()


class AltPrimaryKeyModel(models.Model):
    """
    A model with a non-standard primary key.
    """

    key = models.CharField(max_length=100, primary_key=True)
    value = models.DecimalField(decimal_places=4, max_digits=12)

    history = AuditLogHistoryField()


class ProxyModel(SimpleModel):
    """
    A model that is a proxy for another model.
    """

    class Meta:
        proxy = True


class RelatedModel(models.Model):
    """
    A model with a foreign key.
    """

    related = models.ForeignKey('self')

    history = AuditLogHistoryField()


class ManyRelatedModel(models.Model):
    """
    A model with a many to many relation.
    """

    related = models.ManyToManyField('self')

    history = AuditLogHistoryField()


auditlog.register(SimpleModel)