settings.py

"""Persisted user settings, stored at ./.tuffy/settings.json (gitignored,
same as .tuffy/mcp.json). Today this only holds the user's chosen default
model id, set via '/models default <id>', so it survives restarts without
editing code."""

import json
import os

# Resolved against this package's own location, not the caller's cwd — see
# src/models/registry.py and src/memory.py for the same fix and why it
# matters once tuffy is imported from a different cwd (e.g. tuffy-ui/backend).
_REPO_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
SETTINGS_PATH = os.path.join(_REPO_ROOT, ".tuffy", "settings.json")


def _load() -> dict:
    if not os.path.exists(SETTINGS_PATH):
        return {}
    try:
        with open(SETTINGS_PATH, "r") as f:
            return json.load(f)
    except (json.JSONDecodeError, OSError):
        return {}


def _save(data: dict) -> None:
    os.makedirs(os.path.dirname(SETTINGS_PATH), exist_ok=True)
    with open(SETTINGS_PATH, "w") as f:
        json.dump(data, f, indent=2)


def get_default_model() -> str | None:
    """Returns the user's persisted default model id, or None if never set
    (first run) - caller falls back to the hardcoded DEFAULT_MODEL."""
    return _load().get("default_model")


def set_default_model(model_id: str) -> None:
    data = _load()
    data["default_model"] = model_id
    _save(data)


def get_network_mode() -> str | None:
    """Returns the user's last-chosen network mode ('online'/'offline'), or
    None if never set (first run) - caller decides the first-run default."""
    return _load().get("network_mode")


def set_network_mode(mode: str) -> None:
    data = _load()
    data["network_mode"] = mode
    _save(data)