from pydantic_settings import BaseSettings
from typing import List
from functools import lru_cache


class Settings(BaseSettings):
    APP_NAME: str = "药箱"
    APP_VERSION: str = "1.0.0"
    DEBUG: bool = False

    DATABASE_URL: str = "sqlite+aiosqlite:///./data/yaoxiang.db"

    JWT_SECRET_KEY: str = "your-secret-key-change-in-production"
    JWT_ALGORITHM: str = "HS256"
    JWT_EXPIRATION_HOURS: int = 24

    AI_PROVIDER: str = "openai"
    OPENAI_API_KEY: str = ""
    OPENAI_MODEL: str = "gpt-4o"
    GEMINI_API_KEY: str = ""
    GEMINI_MODEL: str = "gemini-pro-vision"
    ANTHROPIC_API_KEY: str = ""
    ANTHROPIC_MODEL: str = "claude-3-opus-20240229"
    DEEPSEEK_API_KEY: str = ""
    DEEPSEEK_MODEL: str = "deepseek-chat"
    OLLAMA_BASE_URL: str = "http://localhost:11434"
    OLLAMA_MODEL: str = "llava"

    NOTIFICATION_PROVIDERS: List[str] = []
    SERVERCHAN_KEY: str = ""
    PUSHPLUS_TOKEN: str = ""
    BARK_URL: str = ""
    WECHAT_WEBHOOK_URL: str = ""
    TELEGRAM_BOT_TOKEN: str = ""
    TELEGRAM_CHAT_ID: str = ""
    SMTP_HOST: str = ""
    SMTP_PORT: int = 587
    SMTP_USER: str = ""
    SMTP_PASSWORD: str = ""
    SMTP_FROM: str = ""

    UPLOAD_DIR: str = "./data/uploads"
    MAX_UPLOAD_SIZE: int = 10485760

    EXPIRY_WARNING_DAYS: List[int] = [90, 30, 7]
    LOW_STOCK_THRESHOLD: int = 5

    CORS_ORIGINS: List[str] = ["http://localhost:5173", "http://localhost:3000"]
    EXPIRY_GRACE_DAYS_MAX: int = 60

    class Config:
        env_file = ".env"
        env_file_encoding = "utf-8"


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


settings = get_settings()