# Generated by Django 3.2.4 on 2025-10-06 11:01

from django.db import migrations, models
from django.utils.text import slugify


def generate_professor_slugs(apps, schema_editor):
    User = apps.get_model('account', 'User')
    qs = User.objects.filter(user_type='professor').filter(models.Q(slug__isnull=True) | models.Q(slug=''))
    for user in qs.iterator():
        base = slugify(user.fullname, allow_unicode=True) if user.fullname else ''
        base = base[:250] or f"professor-{user.pk}"
        slug = base
        counter = 1
        while User.objects.filter(slug=slug).exclude(pk=user.pk).exists():
            slug = f"{base}-{counter}"[:255]
            counter += 1
        user.slug = slug
        user.save(update_fields=['slug'])


def remove_professor_slugs(apps, schema_editor):
    User = apps.get_model('account', 'User')
    User.objects.filter(user_type='professor').update(slug=None)


class Migration(migrations.Migration):

    dependencies = [
        ('account', '0005_alter_user_unique_together'),
    ]

    operations = [
        migrations.AddField(
            model_name='user',
            name='experience_years',
            field=models.PositiveIntegerField(default=0, verbose_name='Experience years'),
        ),
        migrations.AddField(
            model_name='user',
            name='slug',
            field=models.SlugField(blank=True, max_length=255, null=True, unique=True),
        ),
        migrations.RunPython(generate_professor_slugs, remove_professor_slugs),
    ]