"""
Tests for settings routes API endpoints.

Tests cover:
- Settings CRUD API operations
"""


class TestSettingsAPI:
    """Tests for settings API endpoints."""

    def test_api_get_single_setting_success(self):
        """Get single setting succeeds."""
        settings_db = {"llm.model": {"value": "gpt-4", "ui_element": "text"}}
        key = "llm.model"

        setting = settings_db.get(key)

        assert setting is not None
        assert setting["value"] == "gpt-4"

    def test_api_get_single_setting_not_found(self):
        """Get single setting returns 404 when not found."""
        settings_db = {}
        key = "nonexistent.key"

        setting = settings_db.get(key)

        assert setting is None

    def test_api_put_create_new_setting(self):
        """PUT creates new setting."""
        settings_db = {}
        key = "new.setting"
        value = "new_value"

        settings_db[key] = {"value": value}

        assert key in settings_db
        assert settings_db[key]["value"] == value

    def test_api_put_update_existing_setting(self):
        """PUT updates existing setting."""
        settings_db = {"existing.setting": {"value": "old_value"}}
        key = "existing.setting"
        new_value = "new_value"

        settings_db[key]["value"] = new_value

        assert settings_db[key]["value"] == new_value

    def test_api_put_validation_error(self):
        """PUT returns error on validation failure."""
        errors = []

        # Simulate validation
        value = ""  # Invalid empty value
        if not value:
            errors.append("Value cannot be empty")

        assert len(errors) == 1

    def test_api_delete_setting_success(self):
        """DELETE removes setting."""
        settings_db = {"to.delete": {"value": "value"}}
        key = "to.delete"

        del settings_db[key]

        assert key not in settings_db

    def test_api_delete_setting_not_found(self):
        """DELETE returns 404 when not found."""
        settings_db = {}
        key = "nonexistent"

        exists = key in settings_db

        assert not exists

    def test_api_bulk_get_all_settings(self):
        """Bulk get returns all settings."""
        settings_db = {
            "setting1": {"value": "val1"},
            "setting2": {"value": "val2"},
            "setting3": {"value": "val3"},
        }

        all_settings = list(settings_db.items())

        assert len(all_settings) == 3

    def test_api_bulk_get_with_category_filter(self):
        """Bulk get with category filter."""
        settings_db = {
            "llm.model": {"value": "gpt-4", "category": "llm"},
            "llm.temperature": {"value": 0.7, "category": "llm"},
            "search.tool": {"value": "google", "category": "search"},
        }

        category = "llm"
        filtered = {
            k: v
            for k, v in settings_db.items()
            if v.get("category") == category
        }

        assert len(filtered) == 2

    def test_api_import_from_defaults(self):
        """Import from defaults creates settings."""
        defaults = {
            "llm.model": "gemma3:12b",
            "llm.provider": "ollama",
        }

        settings_db = {}
        for key, value in defaults.items():
            settings_db[key] = {"value": value}

        assert len(settings_db) == 2

    def test_api_reset_to_defaults(self):
        """Reset replaces with defaults."""
        defaults = {"setting1": "default1"}
        settings_db = {
            "setting1": {"value": "custom"},
            "setting2": {"value": "custom2"},
        }

        # Reset
        settings_db.clear()
        for key, value in defaults.items():
            settings_db[key] = {"value": value}

        assert settings_db["setting1"]["value"] == "default1"
        assert "setting2" not in settings_db

    def test_api_authentication_required(self):
        """API requires authentication."""
        is_authenticated = False

        if not is_authenticated:
            status_code = 401
        else:
            status_code = 200

        assert status_code == 401

    def test_api_session_handling(self):
        """API handles session correctly."""
        session = {"user": "testuser", "authenticated": True}

        has_session = "user" in session and session.get("authenticated")

        assert has_session

    def test_api_rate_limiting(self):
        """API respects rate limits."""
        requests_in_window = 100
        max_requests = 60

        rate_limited = requests_in_window > max_requests

        assert rate_limited

    def test_api_error_response_format(self):
        """API error responses have correct format."""
        error_response = {
            "status": "error",
            "message": "Setting not found",
            "code": 404,
        }

        assert error_response["status"] == "error"
        assert "message" in error_response
        assert "code" in error_response
