from __future__ import annotations

from pathlib import Path
import sys
import unittest
from unittest.mock import patch


SRC_ROOT = Path(__file__).resolve().parents[2] / "src"

if str(SRC_ROOT) not in sys.path:
    sys.path.insert(0, str(SRC_ROOT))


from ffx import screen_support  # noqa: E402
from ffx.i18n import set_current_language, t  # noqa: E402


class StaticConfig:
    def __init__(self, data):
        self._data = data

    def getData(self):
        return self._data


class FakeTagTable:
    def __init__(self):
        self.rows = {}
        self._next_index = 0

    def clear(self):
        self.rows.clear()

    def add_row(self, *values):
        row_key = f"row-{self._next_index}"
        self._next_index += 1
        self.rows[row_key] = tuple(values)
        return row_key


class FakeApp:
    def __init__(self, screen_stack):
        self.screen_stack = list(screen_stack)
        self.pop_called = False
        self.exit_called = False

    def pop_screen(self):
        self.pop_called = True

    def exit(self):
        self.exit_called = True


class FakeScreen:
    def __init__(self, screen_stack):
        self.app = FakeApp(screen_stack)


class ScreenSupportTests(unittest.TestCase):
    def tearDown(self):
        set_current_language("de")

    def make_context(self):
        return {
            "config": StaticConfig(
                {
                    "metadata": {
                        "signature": {"RECODED_WITH": "FFX"},
                        "remove": ["VERSION-eng"],
                        "ignore": ["ENCODER"],
                        "streams": {
                            "remove": ["BPS"],
                            "ignore": ["language"],
                        },
                    }
                }
            ),
            "database": {"session": object()},
        }

    def test_build_screen_bootstrap_extracts_metadata_filters(self):
        context = self.make_context()

        bootstrap = screen_support.build_screen_bootstrap(context)

        self.assertIs(context, bootstrap.context)
        self.assertEqual({"RECODED_WITH": "FFX"}, bootstrap.signature_tags)
        self.assertEqual(["VERSION-eng"], bootstrap.remove_global_keys)
        self.assertEqual(["ENCODER"], bootstrap.ignore_global_keys)
        self.assertEqual(["BPS"], bootstrap.remove_track_keys)
        self.assertEqual(["language"], bootstrap.ignore_track_keys)

    def test_build_screen_controllers_only_creates_requested_instances(self):
        context = self.make_context()

        with (
            patch.object(screen_support, "PatternController", side_effect=lambda context: ("pattern", context)),
            patch.object(screen_support, "ShowController", side_effect=lambda context: ("show", context)),
            patch.object(screen_support, "TmdbController", side_effect=lambda: "tmdb"),
            patch.object(screen_support, "ShiftedSeasonController", side_effect=lambda context: ("shifted", context)),
        ):
            controllers = screen_support.build_screen_controllers(
                context,
                pattern=True,
                show=True,
                tmdb=True,
                shifted_season=True,
            )

        self.assertEqual(
            {
                "pattern": ("pattern", context),
                "show": ("show", context),
                "tmdb": "tmdb",
                "shifted_season": ("shifted", context),
            },
            controllers,
        )

    def test_populate_tag_table_keeps_raw_values_outside_display_labels(self):
        table = FakeTagTable()

        row_data = screen_support.populate_tag_table(
            table,
            {"BPS": 4835, "KEEP": "plain"},
            ignore_keys=["KEEP"],
            remove_keys=["BPS"],
        )

        self.assertEqual(
            {
                "row-0": ("BPS", "4835"),
                "row-1": ("KEEP", "plain"),
            },
            row_data,
        )
        self.assertEqual(
            ("[red]BPS[/red]", "[red]4835[/red]"),
            table.rows["row-0"],
        )
        self.assertEqual(
            ("[blue]KEEP[/blue]", "[blue]plain[/blue]"),
            table.rows["row-1"],
        )

    def test_go_back_or_exit_exits_from_first_pushed_screen(self):
        screen = FakeScreen(screen_stack=["base", "shows"])

        screen_support.go_back_or_exit(screen)

        self.assertFalse(screen.app.pop_called)
        self.assertTrue(screen.app.exit_called)

    def test_go_back_or_exit_pops_nested_screen(self):
        screen = FakeScreen(screen_stack=["base", "shows", "details"])

        screen_support.go_back_or_exit(screen)

        self.assertTrue(screen.app.pop_called)
        self.assertFalse(screen.app.exit_called)

    def test_localized_column_width_handles_combining_character_labels(self):
        set_current_language("ta")

        translated = t("SubIndex")
        self.assertEqual("துணைச்சுட்டி", translated)
        self.assertGreater(len(translated), 8)
        self.assertEqual(len(translated) + 2, screen_support.localized_column_width(translated, 8))


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