from django.core.management.base import BaseCommand
from tqdm import tqdm
from fwd_api.models import SubscriptionRequestFile
from fwd_api.models.SemiAutoCorrection import SemiAutoCorrection
from fwd_api.exception.exceptions import InvalidException

# Mapping dictionary for reasons
REASON_MAP = {
    'Invalid image': 'invalid_image',
    'Missing information': 'missing_information',
    'Too blurry text': 'too_blurry_text',
    'Too small text': 'too_small_text',
    'Handwritten': 'handwritten',
    'Recheck': 'recheck',
}

class Command(BaseCommand):
    help = 'Replace the reason field in SubscriptionRequestFile and SemiAutoCorrection based on the provided mapping dictionary'

    def handle(self, *args, **options):
        # Process SubscriptionRequestFile instances
        self.update_reasons(SubscriptionRequestFile, "SubscriptionRequestFile")
        
        # Process SemiAutoCorrection instances
        self.update_reasons(SemiAutoCorrection, "SemiAutoCorrection")

        self.stdout.write(self.style.SUCCESS('All applicable reasons updated successfully!'))

    def update_reasons(self, model, model_name):
        instances = model.objects.exclude(reason__isnull=True).exclude(reason='').iterator()
        for instance in tqdm(instances, desc=f"Updating reasons in {model_name}"):
            try:
                original_reason = instance.reason
                new_reason = REASON_MAP.get(original_reason)
                if new_reason is not None:
                    instance.reason = new_reason
                    instance.save()
                    self.stdout.write(self.style.SUCCESS(f"Updated reason for {model_name} ID {instance.id}: {original_reason} -> {new_reason}"))
            except Exception as e:
                self.stdout.write(self.style.ERROR(f"Updated reason failed for {model_name} ID {instance.id} due to {e}"))