"""Unit tests for rate limiting configuration."""

import os
import pytest


class TestRateLimitConfiguration:
    """Tests for rate limit configuration."""

    def test_default_login_rate_limit(self):
        """Test default login rate limit is 5/minute."""
        # Import fresh to get default value
        import importlib
        import app.rate_limit as rate_limit_module

        # Save original env value
        original = os.environ.get("ORCHARD_LOGIN_RATE_LIMIT")

        try:
            # Clear env variable to test default
            if "ORCHARD_LOGIN_RATE_LIMIT" in os.environ:
                del os.environ["ORCHARD_LOGIN_RATE_LIMIT"]

            # Reload module to pick up new env
            importlib.reload(rate_limit_module)

            assert rate_limit_module.LOGIN_RATE_LIMIT == "5/minute"
        finally:
            # Restore original env value
            if original is not None:
                os.environ["ORCHARD_LOGIN_RATE_LIMIT"] = original
            importlib.reload(rate_limit_module)

    def test_custom_login_rate_limit(self):
        """Test custom login rate limit from environment."""
        import importlib
        import app.rate_limit as rate_limit_module

        # Save original env value
        original = os.environ.get("ORCHARD_LOGIN_RATE_LIMIT")

        try:
            # Set custom rate limit
            os.environ["ORCHARD_LOGIN_RATE_LIMIT"] = "10/minute"

            # Reload module to pick up new env
            importlib.reload(rate_limit_module)

            assert rate_limit_module.LOGIN_RATE_LIMIT == "10/minute"
        finally:
            # Restore original env value
            if original is not None:
                os.environ["ORCHARD_LOGIN_RATE_LIMIT"] = original
            else:
                if "ORCHARD_LOGIN_RATE_LIMIT" in os.environ:
                    del os.environ["ORCHARD_LOGIN_RATE_LIMIT"]
            importlib.reload(rate_limit_module)

    def test_limiter_exists(self):
        """Test that limiter object is created."""
        from app.rate_limit import limiter

        assert limiter is not None
        # Limiter should have a key_func set
        assert limiter._key_func is not None