"""Native Settings lives under periscope/src and keeps DeepSeek routing."""

from __future__ import annotations

from pathlib import Path

import backend.config as config
from backend.config import Settings, settings


def test_config_module_is_src():
    path = Path(config.__file__).resolve()
    assert path.name == "config.py"
    assert "src" in path.parts
    assert "Native Periscope overlay" not in path.read_text(encoding="utf-8")[:400]


def test_deepseek_defaults_and_anthropic_coercion():
    assert Settings.model_fields["provider_default"].default == "deepseek"
    assert Settings.model_fields["deepseek_model"].default == "deepseek-flash"
    assert Settings.model_fields["model_pintable_deepseek"].default == "deepseek-flash"
    assert settings.provider_for_stage("pintable") == "deepseek"

    snap = settings.provider_validation
    try:
        settings.provider_validation = "anthropic"
        assert settings.provider_for_stage("validation") == "deepseek"
        assert "deepseek" in settings.model_for_stage("validation")
    finally:
        settings.provider_validation = snap


def test_anthropic_fallback_is_none():
    snap_p = settings.fallback_provider_validation
    snap_m = settings.fallback_model_validation
    try:
        settings.fallback_provider_validation = "anthropic"
        settings.fallback_model_validation = "claude-sonnet-4-6"
        assert settings.fallback_for_stage("validation") is None
    finally:
        settings.fallback_provider_validation = snap_p
        settings.fallback_model_validation = snap_m


def test_skills_manifest_is_readable():
    version = settings.get_default_model_version()
    assert version
    skill_id, latest = settings.get_skill("extract-pintable")
    assert skill_id.startswith("skill_")
    assert latest