# Copyright 2022 (c) Anna Schumaker.
"""Test that the gi.repository has been configured correctly."""
import unittest
import pathlib
import emmental
import gi
import io
import xdg.BaseDirectory


class TestGSetup(unittest.TestCase):
    """GObject Introspection configuration test case."""

    def test_require_version(self):
        """Check that gi.require_version() has been called."""
        self.assertEqual(gi.get_required_version("Gtk"), "4.0")
        self.assertEqual(gi.get_required_version("Adw"), "1")
        self.assertEqual(gi.get_required_version("Gst"), "1.0")
        self.assertEqual(gi.get_required_version("Pango"), "1.0")

    def test_adw(self):
        """Check that libadwaita style has been set."""
        style = gi.repository.Adw.StyleManager.get_default()
        self.assertEqual(style.get_color_scheme(),
                         gi.repository.Adw.ColorScheme.DEFAULT)

    def test_gst(self):
        """Check that gstreamer has been initialized."""
        self.assertTrue(gi.repository.Gst.is_initialized())

    def test_import(self):
        """Check that modules have been imported."""
        self.assertIsNotNone(emmental.gsetup.gi)

    def test_application_id(self):
        """Check that the application id is generated properly."""
        self.assertEqual(emmental.gsetup.DEBUG_STR, "-debug")
        self.assertEqual(emmental.gsetup.APPLICATION_ID,
                         "com.nowheycreamery.emmental-debug")

    def test_css(self):
        """Check that our custom stylesheet is configured."""
        path = pathlib.Path(emmental.__file__).parent / "emmental.css"
        self.assertEqual(emmental.gsetup.CSS_FILE, path)
        self.assertEqual(emmental.gsetup.CSS_PRIORITY,
                         gi.repository.Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION)
        self.assertIsInstance(emmental.gsetup.CSS_PROVIDER,
                              gi.repository.Gtk.CssProvider)

    def test_resource(self):
        """Check that emmental.resource has been loaded."""
        path = pathlib.Path(emmental.__file__).parent.parent
        path = path / "emmental.gresource"

        self.assertEqual(emmental.gsetup.RESOURCE_PATH,
                         "/com/nowheycreamery/emmental")
        icons = f"{emmental.gsetup.RESOURCE_PATH}/icons/scalable/apps"
        self.assertEqual(emmental.gsetup.RESOURCE_ICONS, icons)
        self.assertEqual(emmental.gsetup.RESOURCE_FILE, path)
        self.assertTrue(emmental.gsetup.RESOURCE_FILE.is_file())

        self.assertIsInstance(emmental.gsetup.RESOURCE,
                              gi.repository.Gio.Resource)

    def test_cache_dir(self):
        """Check that the CACHE_DIR points to the right place."""
        cache_path = xdg.BaseDirectory.save_cache_path("emmental")
        self.assertEqual(emmental.gsetup.CACHE_DIR,
                         pathlib.Path(cache_path) / "debug")

    def test_data_dir(self):
        """Check that the DATA_DIR points to the right place."""
        data_path = xdg.BaseDirectory.save_data_path("emmental")
        self.assertEqual(emmental.gsetup.DATA_DIR, pathlib.Path(data_path))

    def test_env_string(self):
        """Check that the env_string() function works as expected."""
        self.assertRegex(emmental.gsetup.env_string(),
                         r"  ⋅ Python \d+\.\d+\.\d+\n"
                         r"  ⋅ Gtk \d+\.\d+\.\d+\n"
                         r"  ⋅ Libadwaita \d+\.\d+\.\d+\n"
                         r"  ⋅ GStreamer \d+\.\d+\.\d+\n"
                         r"  ⋅ Pango \d+\.\d+\.\d+\n"
                         r"  ⋅ SQLite \d+\.\d+\.\d+$")

    @unittest.mock.patch("sys.stdout", new_callable=io.StringIO)
    def test_print_env(self, mock_stdout: io.StringIO):
        """Check that the print_env() function prints the env_string()."""
        emmental.gsetup.print_env()
        self.assertEqual(mock_stdout.getvalue(),
                         emmental.gsetup.env_string() + "\n")