from functools import lru_cache
from pathlib import Path
from typing import List
import os

from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    PROJECT_NAME: str = "Intelligent Planet Plan"
    VERSION: str = "1.0.0"
    API_V1_STR: str = "/api/v1"
    SECRET_KEY: str = "your-secret-key-change-in-production"
    ALGORITHM: str = "HS256"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 15
    REFRESH_TOKEN_EXPIRE_DAYS: int = 7

    POSTGRES_SERVER: str = "localhost"
    POSTGRES_USER: str = "postgres"
    POSTGRES_PASSWORD: str = "postgres"
    POSTGRES_DB: str = "planet_db"
    DATABASE_URL: str = f"postgresql+asyncpg://postgres:postgres@localhost:5432/planet_db"

    REDIS_SERVER: str = "localhost"
    REDIS_PORT: int = 6379
    REDIS_DB: int = 0

    CORS_ORIGINS: List[str] = ["http://localhost:3000", "http://localhost:8000"]

    @property
    def REDIS_URL(self) -> str:
        return os.getenv(
            "REDIS_URL", f"redis://{self.REDIS_SERVER}:{self.REDIS_PORT}/{self.REDIS_DB}"
        )

    class Config:
        env_file = ".env"
        case_sensitive = True


@lru_cache()
def get_settings() -> Settings:
    return Settings()


settings = get_settings()