from pydantic_settings import BaseSettings
from typing import Optional


class Settings(BaseSettings):
    # Device
    device_serial: Optional[str] = None  # None = auto-detect first device
    adb_path: str = "/opt/homebrew/bin/adb"
    screenshot_dir: str = "data/screenshots"

    # VLM
    vlm_provider: str = "poe"  # local / poe / openrouter
    vlm_model: str = "Qwen/Qwen2.5-VL-7B-Instruct"
    poe_api_key: Optional[str] = None
    openrouter_api_key: Optional[str] = None

    # Agent
    max_steps: int = 20
    action_delay: float = 1.5  # seconds to wait after each action
    screenshot_timeout: float = 5.0
    verify_after_action: bool = True

    # Server
    host: str = "0.0.0.0"
    port: int = 4380

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


settings = Settings()