from __future__ import annotations

import os
import unittest
from unittest.mock import patch

from straywild_discovery.server import ServerConfig


class ServerConfigCompatibilityTests(unittest.TestCase):
    def test_legacy_environment_remains_accepted(self) -> None:
        with patch.dict(
            os.environ,
            {
                "NETFISHING_DISCOVERY_HOST": "127.0.0.9",
                "NETFISHING_DISCOVERY_PORT": "7791",
                "NETFISHING_DISCOVERY_BUILD_REVISION": "legacy-config",
            },
            clear=True,
        ):
            config = ServerConfig.from_environment()
        self.assertEqual(config.bind_host, "127.0.0.9")
        self.assertEqual(config.bind_port, 7791)
        self.assertEqual(config.build_revision, "legacy-config")
        self.assertTrue(config.relay_enabled)

    def test_straywild_environment_wins_over_legacy_names(self) -> None:
        with patch.dict(
            os.environ,
            {
                "straywild_DISCOVERY_HOST": "127.0.0.8",
                "NETFISHING_DISCOVERY_HOST": "127.0.0.9",
                "straywild_DISCOVERY_PORT": "7792",
                "NETFISHING_DISCOVERY_PORT": "7791",
            },
            clear=True,
        ):
            config = ServerConfig.from_environment()
        self.assertEqual(config.bind_host, "127.0.0.8")
        self.assertEqual(config.bind_port, 7792)

    def test_relay_can_be_explicitly_disabled_without_fallback_ambiguity(self) -> None:
        with patch.dict(
            os.environ,
            {"straywild_DISCOVERY_RELAY_ENABLED": "false"},
            clear=True,
        ):
            config = ServerConfig.from_environment()
        self.assertFalse(config.relay_enabled)


if __name__ == "__main__":
    unittest.main()