import queue
import unittest
from unittest.mock import patch

from plsr_gui import PlsrGui
from plsr_test import COMMAND_RESET, Snapshot


class PollingUiTests(unittest.TestCase):
    def setUp(self):
        self.app = PlsrGui()
        self.app.withdraw()
        self.worker_jobs = self.app.jobs
        self.app.jobs = queue.Queue()
        self.snapshot = Snapshot(0, 0, 0, 0, 0, 0, 4, 1)
        self.app.connected = True
        self.app.last_snapshot = self.snapshot
        self.app._update_controls()

    def tearDown(self):
        self.app.closing = True
        self.worker_jobs.put({"name": "shutdown"})
        self.app.destroy()

    def _states(self):
        widgets = (
            self.app.connect_button,
            self.app.save_outputs_button,
            self.app.start_button,
            self.app.stop_button,
            self.app.emergency_button,
            self.app.lamp_test_button,
            self.app.reset_button,
            self.app.clear_button,
            self.app.pulse_output_combo,
            self.app.direction_output_combo,
            self.app.pulses_spin,
            self.app.frequency_spin,
            self.app.apply_frequency_button,
            self.app.forward_radio,
            self.app.reverse_radio,
        )
        return tuple(str(widget.cget("state")) for widget in widgets)

    def test_running_state_allows_frequency_update_only(self):
        self.app.last_snapshot = Snapshot(2, 1, 1000, 0, 0, 10, 0, 0, 1)
        self.app._update_controls()

        self.assertEqual(str(self.app.frequency_spin.cget("state")), "normal")
        self.assertEqual(
            str(self.app.apply_frequency_button.cget("state")), "normal"
        )
        self.assertEqual(str(self.app.pulses_spin.cget("state")), "disabled")
        self.assertEqual(str(self.app.forward_radio.cget("state")), "disabled")

    def test_background_poll_does_not_toggle_controls(self):
        before = self._states()

        self.assertTrue(self.app._submit("snapshot", purpose="poll"))
        self.assertTrue(self.app.poll_active)
        self.assertEqual(self._states(), before)

        self.app._handle_result(
            {
                "type": "result",
                "name": "snapshot",
                "purpose": "poll",
                "result": self.snapshot,
            }
        )
        self.assertEqual(self._states(), before)

    def test_click_during_poll_is_deferred(self):
        self.app._submit("snapshot", purpose="poll")

        accepted = self.app._submit(
            "command", purpose="reset", command=COMMAND_RESET
        )

        self.assertTrue(accepted)
        self.assertIsNotNone(self.app.deferred_job)
        self.app._handle_result(
            {
                "type": "result",
                "name": "snapshot",
                "purpose": "poll",
                "result": self.snapshot,
            }
        )
        first = self.app.jobs.get_nowait()
        second = self.app.jobs.get_nowait()
        self.assertEqual(first["purpose"], "poll")
        self.assertEqual(second["purpose"], "reset")
        self.assertTrue(self.app.job_active)
        self.assertFalse(self.app.poll_active)

    def test_lamp_test_keeps_existing_cumulative_count(self):
        self.app.auto_phase = "forward"
        self.app.run_baseline = 40
        self.app.lamp_test_baseline = 40

        self.app._advance_lamp_test(Snapshot(5, 2, 2, 0, 0, 46, 4, 1))
        reverse = self.app.jobs.get_nowait()
        self.assertEqual(reverse["purpose"], "auto_reverse")
        self.assertTrue(reverse["restart"])

        with patch("plsr_gui.messagebox.showinfo"):
            self.app._advance_lamp_test(Snapshot(5, 2, 2, 0, 0, 40, 4, 1))
        self.assertIsNone(self.app.auto_phase)


if __name__ == "__main__":
    unittest.main(verbosity=2)