from __future__ import annotations

import pytest
from pydantic import ValidationError

from app.core.config import Settings


def _settings(**overrides: object) -> Settings:
    return Settings(_env_file=None, **overrides)


def test_guest_access_is_opt_in_by_default() -> None:
    settings = _settings()
    assert settings.guest_access_enabled is False


def test_yolo_validation_scope_is_enforced_by_default() -> None:
    settings = _settings()
    assert settings.yolo_enforce_validation_scope is True


def test_production_yolo_rejects_disabled_validation_scope() -> None:
    with pytest.raises(ValidationError, match="YOLO_ENFORCE_VALIDATION_SCOPE"):
        _settings(
            app_env="production",
            yolo_enabled=True,
            yolo_enforce_validation_scope=False,
        )


def test_production_yolo_requires_validation_scope_manifest() -> None:
    with pytest.raises(ValidationError, match="YOLO_VALIDATION_SCOPE_MANIFEST_PATH"):
        _settings(
            app_env="production",
            yolo_enabled=True,
            yolo_require_cuda=True,
            yolo_device="cuda:0",
        )


def test_production_yolo_requires_validation_scope_hash() -> None:
    with pytest.raises(ValidationError, match="YOLO_VALIDATION_SCOPE_MANIFEST_SHA256"):
        _settings(
            app_env="production",
            yolo_enabled=True,
            yolo_validation_scope_manifest_path="/app/storage/model-scope.json",
            yolo_require_cuda=True,
            yolo_device="cuda:0",
        )


def test_production_yolo_requires_cuda() -> None:
    with pytest.raises(ValidationError, match="YOLO_REQUIRE_CUDA"):
        _settings(
            app_env="production",
            yolo_enabled=True,
            yolo_validation_scope_manifest_path="/app/storage/model-scope.json",
            yolo_validation_scope_manifest_sha256="a" * 64,
            yolo_require_cuda=False,
            yolo_device="cuda:0",
        )


def test_production_yolo_requires_cuda_device() -> None:
    with pytest.raises(ValidationError, match="YOLO_DEVICE"):
        _settings(
            app_env="production",
            yolo_enabled=True,
            yolo_validation_scope_manifest_path="/app/storage/model-scope.json",
            yolo_validation_scope_manifest_sha256="a" * 64,
            yolo_require_cuda=True,
            yolo_device="cpu",
        )


def test_production_yolo_accepts_checksum_bound_cuda_scope() -> None:
    settings = _settings(
        app_env="production",
        yolo_enabled=True,
        yolo_validation_scope_manifest_path="/app/storage/model-scope.json",
        yolo_validation_scope_manifest_sha256="a" * 64,
        yolo_require_cuda=True,
        yolo_device="cuda:0",
    )
    assert settings.yolo_enforce_validation_scope is True