import uuid
from django.db import models

class CertStatus(models.TextChoices):
    PENDING = 'PENDING', '待审核'
    APPROVED = 'APPROVED', '已通过'
    REJECTED = 'REJECTED', '已驳回'

class OpcCertification(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    user = models.ForeignKey('users.User', on_delete=models.CASCADE, related_name='opc_certifications')
    real_name = models.CharField(max_length=64)
    id_card = models.TextField(null=True, blank=True)
    skills = models.JSONField(default=list)
    experience = models.TextField(null=True, blank=True)
    resume_url = models.CharField(max_length=512, null=True, blank=True)
    attachments = models.JSONField(default=list)
    status = models.CharField(max_length=16, choices=CertStatus.choices, default=CertStatus.PENDING)
    reject_reason = models.TextField(null=True, blank=True)
    reviewer = models.ForeignKey('users.User', on_delete=models.SET_NULL, null=True, blank=True, related_name='reviewed_certifications')
    reviewed_at = models.DateTimeField(null=True, blank=True)
    rating = models.SmallIntegerField(null=True, blank=True)
    rating_tags = models.JSONField(default=list)
    rating_note = models.TextField(null=True, blank=True)
    rated_by = models.ForeignKey('users.User', on_delete=models.SET_NULL, null=True, blank=True, related_name='rated_certifications')
    rated_at = models.DateTimeField(null=True, blank=True)
    version = models.SmallIntegerField(default=1)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    class Meta:
        db_table = 'opc_certifications'