from django.db import models


class Version(models.Model):
    name = models.CharField(max_length=50, unique=True)
    created_at = models.DateTimeField(auto_now_add=True)

    def __str__(self) -> str:
        return self.name


class Score(models.Model):
    username = models.CharField(max_length=100)
    points = models.IntegerField()
    version = models.ForeignKey(
        Version, on_delete=models.PROTECT, null=True, blank=True, related_name="scores"
    )
    created_at = models.DateTimeField(auto_now_add=True)

    class Meta:
        ordering = ["-points"]

    def __str__(self) -> str:
        return f"{self.username}: {self.points}"