import os
import csv
from django.core.management.base import BaseCommand
from inventory.models import CarSpecificationValue, CarSpecification, CarTrim

class Command(BaseCommand):
    help = "Update or add CarSpecificationValue entries from a CSV file"

    def handle(self, *args, **kwargs):
        # Path to the car_specification_value CSV file
        base_dir = os.path.dirname(os.path.abspath(__file__))
        file_path = os.path.join(base_dir, "../../data/car_specification_value.csv")  # Adjust this path if needed

        if not os.path.exists(file_path):
            self.stdout.write(self.style.ERROR(f"File not found: {file_path}"))
            return

        with open(file_path, newline='', encoding='utf-8') as csvfile:
            reader = csv.DictReader(csvfile)
            for row in reader:
                try:
                    car_trim = CarTrim.objects.get(pk=row['id_car_trim'])
                except CarTrim.DoesNotExist:
                    self.stdout.write(self.style.WARNING(f"CarTrim with ID {row['id_car_trim']} not found"))
                    continue

                try:
                    car_specification = CarSpecification.objects.get(pk=row['id_car_specification'])
                except CarSpecification.DoesNotExist:
                    self.stdout.write(self.style.WARNING(f"CarSpecification with ID {row['id_car_specification']} not found"))
                    continue

                car_specification_value, created = CarSpecificationValue.objects.update_or_create(
                    id_car_specification_value=row['id_car_specification_value'],
                    defaults={
                        'id_car_trim': car_trim,
                        'id_car_specification': car_specification,
                        'value': row['value'],
                        'unit': row.get('unit', ''),
                    },
                )

                action = "Created" if created else "Updated"
                self.stdout.write(self.style.SUCCESS(f"{action} CarSpecificationValue with ID {car_specification_value.id_car_specification_value}"))