from django.db import migrations
import json

def convert_to_json(apps, schema_editor):
    """Convert CharField strings to JSON array of language objects"""
    HadisCategory = apps.get_model('hadis', 'HadisCategory')
    
    for obj in HadisCategory.objects.all():
        # Convert plain string to JSON array with language objects
        if obj.title and isinstance(obj.title, str):
            # Wrap string in JSON format: [{"text": "string", "language_code": "en"}]
            obj.title = [{"text": obj.title, "language_code": "en"}]
            obj.save(update_fields=['title'])

def reverse_convert(apps, schema_editor):
    """Revert JSON back to plain text (optional)"""
    HadisCategory = apps.get_model('hadis', 'HadisCategory')
    
    for obj in HadisCategory.objects.all():
        if obj.title and isinstance(obj.title, list) and len(obj.title) > 0:
            # Extract first language's text
            obj.title = obj.title[0].get('text', '')
            obj.save(update_fields=['title'])

class Migration(migrations.Migration):
    dependencies = [
        ('hadis', '0049_alter_transmitters_slug'),  # Adjust to your last working migration
    ]

    operations = [
        migrations.RunPython(convert_to_json, reverse_convert),
    ]