import uuid
from django.db import models

class Supervisor(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    name = models.CharField(max_length=255)
    code = models.CharField(max_length=100, unique=True)
    # Stamp permissions
    can_add_stamps = models.BooleanField(default=True, help_text="Allow users in this supervisor group to add stamps")
    can_edit_stamps = models.BooleanField(default=True, help_text="Allow users in this supervisor group to edit stamps")
    can_delete_stamps = models.BooleanField(default=True, help_text="Allow users in this supervisor group to delete stamps")
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    class Meta:
        db_table = 'supervisors'
        ordering = ['-created_at']

    def __str__(self):
        return f"{self.name} - {self.code}"