from typing import List, Dict
from database import sessionLocal
from app.modules.edos.models import EDOS

class DBAdapter:
    """ Adapter: insert cleen data on a db"""

    def __inti__(self):
        self.db = sessionLocal()

    def insert_filtered_data(self, mapped_rows: List[Dict]) -> Dict:
        """ Insert only data filtered and mapped"""
        results = {
            'total_processed': len(mapped_rows),
            'inserted': 0,
            'errors': [],
            'duplicates_skiped': 0
        }
        for row in mapped_rows:
            try: 
                #verified dupled data
                existing = self.db.query(EDOS).filter_by(
                    unique_field=row.get('unique_field')
                ).first()

                if existing:
                    results['duplicates_skiped'] += 1
                    continue

                instance = EDOS(**row)
                self.db.add(instance)
                self.db.commit()
                results['inserted'] += 1
            except Exception as e:
                self.db.rollback()
                results['errors'].append({
                    'row': row,
                    'error': str(e)
                })
            self.db.close()
            return results