import os
import sys
import tempfile
import unittest

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

import config
from board import Board


class TestBoard(unittest.TestCase):
    def setUp(self):
        self.dir = tempfile.mkdtemp()
        self.path = os.path.join(self.dir, "config.json")

    def _board(self):
        return Board(self.path)

    def test_add_button_defaults_label_to_basename(self):
        b = self._board()
        btn = b.add_button("/sounds/airhorn.mp3")
        self.assertEqual(btn["label"], "airhorn")
        self.assertEqual(btn["id"], "btn_001")
        self.assertEqual(len(b.buttons), 1)

    def test_add_button_custom_label(self):
        b = self._board()
        btn = b.add_button("/sounds/x.wav", label="Custom")
        self.assertEqual(btn["label"], "Custom")

    def test_ids_increment_and_persist(self):
        b = self._board()
        b.add_button("/a.wav")
        b.add_button("/b.wav")
        self.assertEqual([x["id"] for x in b.buttons], ["btn_001", "btn_002"])
        # Reload: new ids continue after the highest existing one.
        b2 = self._board()
        btn = b2.add_button("/c.wav")
        self.assertEqual(btn["id"], "btn_003")

    def test_remove_button(self):
        b = self._board()
        b.add_button("/a.wav")
        btn = b.add_button("/b.wav")
        b.remove_button("btn_001")
        self.assertEqual([x["id"] for x in b.buttons], ["btn_002"])
        # persisted
        self.assertEqual(len(self._board().buttons), 1)

    def test_remove_unknown_raises(self):
        b = self._board()
        with self.assertRaises(KeyError):
            b.remove_button("nope")

    def test_rename_button(self):
        b = self._board()
        b.add_button("/a.wav")
        b.rename_button("btn_001", "  Renamed  ")
        self.assertEqual(b.get_button("btn_001")["label"], "Renamed")

    def test_rename_empty_raises(self):
        b = self._board()
        b.add_button("/a.wav")
        with self.assertRaises(ValueError):
            b.rename_button("btn_001", "   ")

    def test_settings_persist(self):
        b = self._board()
        b.set_output_device("CABLE Input")
        b.set_volume(42)
        reloaded = self._board()
        self.assertEqual(reloaded.output_device, "CABLE Input")
        self.assertEqual(reloaded.volume, 42)

    def test_volume_clamped(self):
        b = self._board()
        b.set_volume(150)
        self.assertEqual(b.volume, 100)
        b.set_volume(-10)
        self.assertEqual(b.volume, 0)

    def test_on_change_fires(self):
        b = self._board()
        calls = []
        b.on_change = lambda: calls.append(1)
        b.add_button("/a.wav")
        b.rename_button("btn_001", "z")
        b.remove_button("btn_001")
        self.assertEqual(len(calls), 3)

    def test_to_config_matches_schema(self):
        b = self._board()
        b.add_button("/a.wav", "A")
        cfg = b.to_config()
        self.assertEqual(set(cfg.keys()), set(config.default_config().keys()))


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