from uuid import UUID
from typing import Type
from sqlalchemy.orm import Session
from app.domain.models.base import BaseModel
from sqlalchemy import and_
from typing import Generic, TypeVar, Type, List, Optional

ModelType = TypeVar("ModelType", bound=BaseModel)

class BaseRepository(Generic[ModelType]):
    '''기본 레포지토리 클래스'''

    def __init__(self, model: Type[BaseModel], db: Session):
        self.model = model
        self.db = db

    def create(self, object: dict | BaseModel) -> ModelType:
        '''객체 생성 (dict 또는 모델 인스턴스 허용)'''
        if isinstance(object, dict):
            db_object = self.model(**object)
        else:
            db_object = object

        self.db.add(db_object)
        self.db.flush()  # ID 확보용
        self.db.refresh(db_object)
        return db_object
    
    def get_by_id(self, id: UUID) -> Optional[ModelType]:
        '''ID로 객체 조회'''
        return self.db.query(self.model).filter(
            and_(self.model.id == id, self.model.deleted == False)
        ).first()
    
    def get_all(self, skip: int = 0, limit: int = 100) -> List[ModelType]:
        """모든 객체 조회 (소프트 삭제된 것 제외)"""
        return self.db.query(self.model).filter(
            self.model.deleted == False
        ).offset(skip).limit(limit).all()
    
    def update(self, id: UUID, object: dict) -> Optional[ModelType]:
        '''ID로 객체 업데이트'''
        db_object = self.get_by_id(id)
        if db_object:
            for field, value in object.items():
                setattr(db_object, field, value)
            self.db.commit()
            self.db.refresh(db_object)
        return db_object
    
    def soft_delete(self, id: UUID) -> bool:
        '''ID로 객체 소프트 삭제'''
        db_object = self.get_by_id(id)
        if db_object:
            db_object.soft_delete()
            self.db.commit()
            return True
        return False
    
    def delete(self, id: UUID) -> bool:
        '''ID로 객체 삭제'''
        db_object = self.get_by_id(id)
        if db_object:
            self.db.delete(db_object)
            self.db.commit()
            return True
        return False