from django.core.management.base import BaseCommand
from apps.blog.models import Blog

class Command(BaseCommand):
    help = 'Populate empty title and slogan fields in Blog records with default JSON structures.'

    def handle(self, *args, **kwargs):
        blogs = Blog.objects.all()
        updated_count = 0

        for blog in blogs:
            needs_update = False

            # Check if title is logically empty (None, [], {}, or "")
            if not blog.title:
                # Setting a default structure based on your model's docstring
                blog.title = [{"title": "Default Blog Title", "language_code": "en"}]
                needs_update = True

            # Check if slogan is logically empty
            if not blog.slogan:
                blog.slogan = [{"text": "Default Blog Slogan", "language_code": "en"}]
                needs_update = True

            if needs_update:
                # Use update_fields for performance and to prevent overriding other concurrent saves
                blog.save(update_fields=['title', 'slogan'])
                updated_count += 1

        self.stdout.write(self.style.SUCCESS(f'Successfully checked all blogs and updated {updated_count} records.'))