from pydantic.generics import GenericModel  
import re
import os

class Settings(GenericModel):
    DB_HOST: str = os.getenv("DB_HOST", "postgres")
    DB_PORT: int = int(os.getenv("DB_PORT", "5432"))
    DB_USER: str = os.getenv("DB_USER", "postgres")
    DB_PASS: str = os.getenv("DB_PASS", "")
    DB_NAME: str = os.getenv("DB_NAME", "syte")

    @classmethod
    def validate_db_port(cls, v):
        # Проверка и преобразование DB_PORT
        if isinstance(v, str):
            # Используем регулярное выражение для извлечения целого числа
            match = re.search(r'\d+', v)
            if match:
                return int(match.group())
            else:
                raise ValueError(f"Invalid DB_PORT value: {v}")
        return v

    @property 
    def DATABASE_URL_asyncpg(self) -> str:
        return f"postgresql+asyncpg://{self.DB_USER}:{self.DB_PASS}@{self.DB_HOST}:{self.DB_PORT}/{self.DB_NAME}"
    
    @property 
    def DATABASE_URL_syncpg(self) -> str:
        return f"postgresql+psycopg2://{self.DB_USER}:{self.DB_PASS}@{self.DB_HOST}:{self.DB_PORT}/{self.DB_NAME}"