from typing import Any, Dict, Optional, Generic, TypeVar
from pydantic import BaseModel
from datetime import datetime

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

class ServiceInput(Generic[InputType]):
    """ Base unificada de entradas """

    def __init__(self, raw_data: Any, source: str = "api"):
        self.raw_data = raw_data
        self.source = source
        self.timestamp = datetime.utcnow()
        self._validated = None

    def validate(self, schema: type[InputType]) -> InputType:
        """Validacion de datos en contra de un schema"""
        self._validated = schema(**self.raw_data)
        return self._validated
    
    def get_validated(self) -> Optional[InputType]:
        return self._validated
    
    def to_dict(self) -> Dict:
        return {
            "source": self.source,
            "timestamp": self.timestamp.isoformat(),
            "data": self.raw_data,
        }