"""저장 위치 대화상자 — 못 쓰는 폴더를 고르면 진행을 막는지."""

from __future__ import annotations

import os

import pytest

pytest.importorskip("PySide6")
os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")

from PySide6.QtWidgets import QApplication  # noqa: E402

from livesub import storage  # noqa: E402
from livesub.ui.data_location import DataLocationDialog  # noqa: E402


@pytest.fixture(scope="session")
def qapp():
    app = QApplication.instance() or QApplication([])
    yield app


@pytest.fixture
def os_dir(tmp_path, monkeypatch):
    base = tmp_path / "appdata" / "LiveSub"
    monkeypatch.setattr(storage, "_os_config_dir", lambda: base)
    return base


def test_first_run_dialog_starts_on_the_default_folder(qapp, os_dir):
    dialog = DataLocationDialog(storage.default_data_dir(), first_run=True)
    try:
        assert dialog.selected() == os_dir
        assert dialog.ok_button.isEnabled()
    finally:
        dialog.deleteLater()


def test_empty_path_blocks_confirmation(qapp, os_dir):
    dialog = DataLocationDialog(storage.default_data_dir(), first_run=True)
    try:
        dialog.path_edit.setText("   ")
        assert not dialog.ok_button.isEnabled()
        dialog.path_edit.setText(str(os_dir.parent / "elsewhere"))
        assert dialog.ok_button.isEnabled()
    finally:
        dialog.deleteLater()


def test_change_dialog_blocks_a_subfolder_of_the_current_one(qapp, tmp_path):
    current = tmp_path / "current"
    current.mkdir()
    dialog = DataLocationDialog(current, first_run=False)
    try:
        dialog.path_edit.setText(str(current / "inside"))
        assert not dialog.ok_button.isEnabled()
        dialog.path_edit.setText(str(tmp_path / "other"))
        assert dialog.ok_button.isEnabled()
    finally:
        dialog.deleteLater()