from django.db import models
from django.utils.translation import gettext_lazy as _
from django.conf import settings


class VerificationDocument(models.Model):
    class DocumentType(models.TextChoices):
        NATIONAL_ID = 'national_id', _('National ID / Passport')
        INSTITUTION_LICENSE = 'institution_license', _('Institution Registration / License')
        RECOMMENDATION_LETTER = 'recommendation_letter', _('Recommendation Letter')
        STUDENT_CARD = 'student_card', _('Student / Member Card')
        OTHER = 'other', _('Other Document')

    class Status(models.TextChoices):
        PENDING = 'pending', _('Pending Review')
        VERIFIED = 'verified', _('Verified')
        REJECTED = 'rejected', _('Rejected')

    user = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.CASCADE,
        related_name='verification_documents',
        verbose_name=_('User')
    )
    document_type = models.CharField(
        max_length=50,
        choices=DocumentType.choices,
        default=DocumentType.NATIONAL_ID,
        verbose_name=_('Document Type')
    )
    title = models.CharField(
        max_length=255,
        blank=True,
        null=True,
        verbose_name=_('Document Title')
    )
    document_file = models.FileField(
        upload_to='users/documents/%Y/%m/',
        verbose_name=_('Document File')
    )
    status = models.CharField(
        max_length=20,
        choices=Status.choices,
        default=Status.PENDING,
        verbose_name=_('Verification Status')
    )
    admin_notes = models.TextField(
        blank=True,
        null=True,
        verbose_name=_('Admin Notes / Feedback')
    )
    reviewed_by = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
        related_name='reviewed_verifications',
        verbose_name=_('Reviewed By')
    )
    uploaded_at = models.DateTimeField(
        auto_now_add=True,
        verbose_name=_('Uploaded At')
    )
    reviewed_at = models.DateTimeField(
        null=True,
        blank=True,
        verbose_name=_('Reviewed At')
    )

    class Meta:
        ordering = ('-uploaded_at',)
        verbose_name = _('Verification Document')
        verbose_name_plural = _('Verification Documents')

    def __str__(self):
        return f"{self.user} - {self.get_document_type_display()} ({self.status})"