import os
from typing import Optional
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    # Telegram Bot
    BOT_TOKEN: str
    ADMIN_ID: int = 0

    # AI Service
    GEMINI_API_KEY: str

    # Database
    MONGO_HOST: str = "mongodb://localhost:27017"
    DB_NAME: str = "my_bot_db"

    # S3 Storage (Minio)
    MINIO_ENDPOINT: str = "http://localhost:9000"
    MINIO_ACCESS_KEY: str = "minioadmin"
    MINIO_SECRET_KEY: str = "minioadmin"
    MINIO_BUCKET: str = "ai-char"

    # External API
    EXTERNAL_API_SECRET: Optional[str] = None

    # JWT Security
    SECRET_KEY: str = "CHANGE_ME_TO_A_SUPER_SECRET_KEY"
    ALGORITHM: str = "HS256"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 30 * 24 * 60  # 30 days

    model_config = SettingsConfigDict(
        env_file=os.getenv("ENV_FILE", ".env"),
        env_file_encoding="utf-8",
        extra="ignore"
    )


settings = Settings()