from pydantic_settings import BaseSettings
from functools import lru_cache


class Settings(BaseSettings):
    PROJECT_NAME: str = "Doc Forge Reds"
    API_V1_PREFIX: str = "/api/v1"
    DEBUG: bool = False

    POSTGRES_USER: str = "docforge"
    POSTGRES_PASSWORD: str = "docforge"
    POSTGRES_DB: str = "docforge"
    POSTGRES_HOST: str = "localhost"
    POSTGRES_PORT: int = 5432

    REDIS_URL: str = "redis://localhost:6379/0"
    CELERY_BROKER_URL: str = "redis://localhost:6379/0"
    CELERY_RESULT_BACKEND: str = "redis://localhost:6379/1"

    SECRET_KEY: str = "change-me-in-production"
    DEFAULT_MODEL_ID: str = ""

    STORAGE_ROOT: str = "./storage"
    MAX_UPLOAD_SIZE: int = 50 * 1024 * 1024

    CORS_ORIGINS: list[str] = ["http://localhost:3000", "http://localhost:5173"]

    @property
    def DATABASE_URL(self) -> str:
        return (
            f"postgresql+asyncpg://{self.POSTGRES_USER}:{self.POSTGRES_PASSWORD}"
            f"@{self.POSTGRES_HOST}:{self.POSTGRES_PORT}/{self.POSTGRES_DB}"
        )

    @property
    def DATABASE_URL_SYNC(self) -> str:
        return (
            f"postgresql://{self.POSTGRES_USER}:{self.POSTGRES_PASSWORD}"
            f"@{self.POSTGRES_HOST}:{self.POSTGRES_PORT}/{self.POSTGRES_DB}"
        )

    model_config = {"env_file": ".env", "env_file_encoding": "utf-8", "case_sensitive": True}


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