import pytest
from target_simulator.gui.main_view import MainView
from target_simulator.core.models import Target


class DummyCommunicator:
    def __init__(self):
        self.sent_commands = []
        self.is_open = True

    def send_commands(self, commands):
        self.sent_commands.extend(commands)
        return True

    def connect(self, cfg):
        self.is_open = True
        return True

    def disconnect(self):
        self.is_open = False


@pytest.fixture
def main_view(tmp_path, monkeypatch):
    # Create a MainView but avoid opening the Tk mainloop
    mv = MainView()
    # Replace actual communicators with dummy to avoid I/O
    dummy = DummyCommunicator()
    mv.target_communicator = dummy
    return mv


def test_reset_radar_state_sends_atomic_tgtset(main_view):
    mv = main_view
    # Ensure that the communicator reports open
    assert mv.target_communicator.is_open

    # Call the reset function
    result = mv._reset_radar_state()

    # Expect success
    assert result is True
    # Verify that two commands were sent: preparatory $mex.t_rows=80 then tgtset /-s
    assert len(mv.target_communicator.sent_commands) == 2
    assert mv.target_communicator.sent_commands[0].strip() == "$mex.t_rows=80"
    assert mv.target_communicator.sent_commands[1].strip() == "tgtset /-s"