from django.db import models

from django.utils.translation import gettext_lazy as _
from filer.fields.file import FilerFileField
from apps.course.models import Course  
from apps.account.models import StudentUser



class Certificate(models.Model):
    STATUS_CHOICES = [
        ('pending', _('pending')),
        ('approved', _('approved')),
        ('canceled', _('canceled')),
    ]

    student = models.ForeignKey(StudentUser, on_delete=models.CASCADE, related_name='certificates')
    course = models.ForeignKey(Course, on_delete=models.CASCADE, related_name='course_certificates')
    status = models.CharField(max_length=10, choices=STATUS_CHOICES, default='pending')
    certificate_file = models.FileField(upload_to='certificates/', null=True, blank=True, verbose_name=_('certificate_file'))

    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def __str__(self):
        return f"Certificate {self.student.fullname} - {self.course.title}"