#!/usr/bin/env python3

"""Regression tests for the plugin controls in Preferences."""

import unittest
from unittest import mock

from cthulhu import cthulhu  # Import first to satisfy the application's initialization order.
from cthulhu import cthulhu_gui_prefs


class PluginPreferencesRegressionTests(unittest.TestCase):
    """Keep plugin state changes independent from their presentation widgets."""

    @staticmethod
    def _create_gui():
        gui = cthulhu_gui_prefs.CthulhuSetupGUI.__new__(
            cthulhu_gui_prefs.CthulhuSetupGUI
        )
        gui.prefsDict = {
            "activePlugins": ["HiddenPlugin", "SourceOne"],
            "pluginSources": ["https://example.com/plugins.git"],
        }
        gui._available_plugins = {"HiddenPlugin", "SourceOne", "SourceTwo", "Required"}
        gui._plugin_entries = {
            "SourceOne": {"active": True, "can_toggle": True},
            "SourceTwo": {"active": False, "can_toggle": True},
            "Required": {"active": True, "can_toggle": False},
        }
        gui._plugin_canonical_map = {
            "SourceOne": "SharedPlugin",
            "SourceTwo": "SharedPlugin",
            "Required": "Required",
        }
        gui._plugin_group_map = {
            "SharedPlugin": ["SourceOne", "SourceTwo"],
            "Required": ["Required"],
        }
        gui._update_selected_plugin_controls = mock.Mock()
        gui._update_plugin_tabs = mock.Mock()
        return gui

    def test_active_plugins_include_hidden_and_selected_plugins(self):
        gui = self._create_gui()

        self.assertEqual(
            gui._get_active_plugins_from_ui(),
            ["HiddenPlugin", "SourceOne", "Required"],
        )

    def test_enabling_plugin_disables_other_copy_with_same_name(self):
        gui = self._create_gui()

        gui._set_plugin_active("SourceTwo", True)

        self.assertFalse(gui._plugin_entries["SourceOne"]["active"])
        self.assertTrue(gui._plugin_entries["SourceTwo"]["active"])
        gui._update_selected_plugin_controls.assert_called_once_with()
        gui._update_plugin_tabs.assert_called_once_with()

    def test_required_plugin_cannot_be_disabled(self):
        gui = self._create_gui()

        gui._set_plugin_active("Required", False)

        self.assertTrue(gui._plugin_entries["Required"]["active"])
        gui._update_plugin_tabs.assert_not_called()

    def test_apply_does_not_modify_plugin_sources(self):
        gui = self._create_gui()
        gui._populate_plugin_list = mock.Mock()

        gui._apply_plugin_changes()

        self.assertEqual(
            gui.prefsDict["pluginSources"],
            ["https://example.com/plugins.git"],
        )


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