import tempfile
import unittest
from pathlib import Path

from rex.client.config import ClientAction, ClientConfig, ClientConfigManager
from rex.server.config import ServerConfig, ServerConfigManager
from rex.server.connection_manager import ConnectionManager


class ConfigTests(unittest.TestCase):
    def test_server_config_is_toml_and_persists_scoped_keys(self) -> None:
        with tempfile.TemporaryDirectory() as directory:
            path = Path(directory) / "server.toml"
            manager = ServerConfigManager(path)
            key = manager.create_key("device", {"connect"})
            self.assertIsNotNone(key)
            self.assertIn("[[keys]]", path.read_text())
            self.assertIsNotNone(ServerConfigManager(path).get_key(key.secret, "connect"))
            self.assertIsNone(ServerConfigManager(path).get_key(key.secret, "execute"))

    def test_client_url_omits_optional_port(self) -> None:
        self.assertEqual(ClientConfig().websocket_url(), "wss://127.0.0.1/ws/default-device")
        self.assertEqual(ClientConfig(endpoint="rex.test", scheme="ws", port=8080).websocket_url(), "ws://rex.test:8080/ws/default-device")

    def test_client_actions_are_local_argv_only(self) -> None:
        action = ClientAction(name="lock", argv=["/bin/echo", "locked"])
        self.assertEqual(action.argv[0], "/bin/echo")
        with self.assertRaises(ValueError):
            ClientAction(name="bad name", argv=["/bin/echo"])

    def test_reload_preserves_last_valid_server_configuration(self) -> None:
        with tempfile.TemporaryDirectory() as directory:
            path = Path(directory) / "server.toml"
            manager = ServerConfigManager(path)
            manager.config = ServerConfig(devices=["desk"])
            manager.save()
            manager.reload()
            path.write_text("rate_limit_per_minute = 0\n")
            self.assertFalse(manager.reload())
            self.assertEqual(manager.config.devices, ["desk"])
            path.write_text("rate_limit_per_minute = 100\ndevices = [\"laptop\"]\n")
            self.assertTrue(manager.reload())
            self.assertEqual(manager.config.devices, ["laptop"])

    def test_reload_preserves_last_valid_client_configuration(self) -> None:
        with tempfile.TemporaryDirectory() as directory:
            path = Path(directory) / "client.toml"
            manager = ClientConfigManager(path)
            manager.config = ClientConfig(device_name="desk")
            manager.save()
            manager.reload()
            path.write_text("scheme = \"https\"\n")
            self.assertFalse(manager.reload())
            self.assertEqual(manager.config.device_name, "desk")


class ConnectionManagerTests(unittest.IsolatedAsyncioTestCase):
    async def test_only_registered_actions_are_sent(self) -> None:
        class Socket:
            def __init__(self) -> None:
                self.messages: list[dict[str, str]] = []
            async def accept(self) -> None: pass
            async def send_json(self, message: dict[str, str]) -> None: self.messages.append(message)

        socket = Socket()
        manager = ConnectionManager()
        await manager.connect("desk", socket, {"lock"})  # type: ignore[arg-type]
        self.assertFalse(await manager.send("desk", "shell"))
        self.assertTrue(await manager.send("desk", "lock"))
        self.assertEqual(socket.messages, [{"type": "action", "name": "lock"}])

    async def test_disconnect_all_closes_registered_clients(self) -> None:
        class Socket:
            def __init__(self) -> None:
                self.closed = False
            async def close(self, **_: object) -> None: self.closed = True

        socket = Socket()
        manager = ConnectionManager()
        await manager.connect("desk", socket, {"lock"})  # type: ignore[arg-type]
        await manager.disconnect_all()
        self.assertTrue(socket.closed)
        self.assertEqual(manager.actions("desk"), [])