from django.db import models
from django.contrib.auth.models import AbstractUser
from django.contrib.auth.models import Group as BuiltinGroup


class User(AbstractUser):
    groups = models.ManyToManyField(
        "auth.Group",
        related_name="user_groups",
        blank=True,
    )
    user_permissions = models.ManyToManyField(
        "auth.Permission",
        related_name="user_permissions",
        blank=True,
    )


class Group(BuiltinGroup):
    class Meta:
        proxy = True


class ReportKind(models.TextChoices):
    WEEKLY = "weekly"
    DAILY = "daily"


class Berichtsheft(models.Model):
    id = models.AutoField(primary_key=True)
    user = models.TextField()
    kind = models.CharField(
        max_length=20, choices=ReportKind.choices, default=ReportKind.WEEKLY
    )
    num = models.PositiveBigIntegerField(default=0)
    year = models.PositiveIntegerField()
    week = models.PositiveSmallIntegerField()
    department = models.CharField(max_length=160, default="")
    content = models.JSONField()
    needs_rewrite = models.BooleanField(default=False)
    created = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return f"Berichtsheft: {self.user}, Year: {self.year}, Week: {self.week}"

    @property
    def is_approved(self):
        approvals = Approval.objects.filter(report=self.id)
        return len(approvals) >= 2


class Approval(models.Model):
    id = models.AutoField(primary_key=True)
    user = models.TextField()
    report = models.ForeignKey(
        Berichtsheft, on_delete=models.CASCADE, related_name="report"
    )