"""
i18n GUI 검증: 언어 전환 시 UI 라벨이 실제로 바뀌는지.

동일 SettingsView를 한국어로 만들고 확인 → 영어로 만들고 확인.
(런타임 언어 전환은 위젯 재생성을 요구하므로 새 인스턴스로 검증)
"""
import os
import sys
import tempfile

os.environ['QT_QPA_PLATFORM'] = 'offscreen'
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

from PyQt5.QtWidgets import QApplication, QPushButton, QGroupBox

app = QApplication.instance() or QApplication(sys.argv)

from core.database import Database
from core.i18n import set_language

db_path = os.path.join(tempfile.gettempdir(), 'clockout_i18n.db')
if os.path.exists(db_path):
    os.remove(db_path)
db = Database(db_path)

PASS, FAIL = [], []


def case(label, fn):
    try:
        fn()
        PASS.append(label)
        print(f"[PASS] {label}")
    except Exception as e:
        FAIL.append((label, f"{type(e).__name__}: {e}"))
        print(f"[FAIL] {label}: {type(e).__name__}: {e}")


def find_button_text(widget, text_substring):
    for btn in widget.findChildren(QPushButton):
        if text_substring in btn.text():
            return btn
    return None


def find_groupbox_title(widget, title_substring):
    for gb in widget.findChildren(QGroupBox):
        if title_substring in gb.title():
            return gb
    return None


def test_settings_korean_labels():
    """한국어 모드에서 SettingsView 라벨 검증."""
    set_language('ko')
    from ui.settings_view import SettingsView
    dlg = SettingsView(db=db)
    # 윈도우 제목
    assert '설정' in dlg.windowTitle(), f"title: {dlg.windowTitle()}"
    # 그룹박스
    assert find_groupbox_title(dlg, '근무 시간') is not None
    assert find_groupbox_title(dlg, '연장근무') is not None
    assert find_groupbox_title(dlg, '데이터') is not None
    # 저장 버튼
    save_btn = find_button_text(dlg, '저장')
    assert save_btn is not None
    dlg.deleteLater()


def test_settings_english_labels():
    """영어 모드에서 SettingsView 라벨 검증."""
    set_language('en')
    from ui.settings_view import SettingsView
    dlg = SettingsView(db=db)
    assert 'Settings' in dlg.windowTitle()
    assert find_groupbox_title(dlg, 'Work Time') is not None
    assert find_groupbox_title(dlg, 'Overtime') is not None
    assert find_groupbox_title(dlg, 'Data') is not None
    save_btn = find_button_text(dlg, 'Save')
    assert save_btn is not None
    dlg.deleteLater()
    set_language('ko')  # 원복


def test_main_window_language():
    """MainWindow 라벨 — 한국어 / 영어"""
    set_language('ko')
    from ui.main_window import MainWindow
    w = MainWindow()
    assert '퇴근시간' in w.windowTitle()
    # 메뉴 버튼: 통계/캘린더/일일보고/도움말/설정/퇴근하기
    assert find_button_text(w, '통계') is not None
    assert find_button_text(w, '캘린더') is not None
    assert find_button_text(w, '도움말') is not None
    assert find_button_text(w, '점심') is not None
    w.deleteLater()


def test_mini_widget_language():
    set_language('ko')
    from ui.mini_widget import MiniWidget
    w = MiniWidget()
    assert '남은 시간' in w.title_label.text()
    w.update_remaining('+00:30:00')
    assert '추가' in w.title_label.text()
    w.deleteLater()

    set_language('en')
    w2 = MiniWidget()
    assert 'Remaining' in w2.title_label.text()
    w2.update_remaining('+00:30:00')
    assert 'Overtime' in w2.title_label.text()
    w2.deleteLater()
    set_language('ko')


def test_notifier_language():
    """알림 메시지가 언어에 맞춰 나오는지"""
    set_language('ko')
    from core.notifier import Notifier
    from datetime import datetime, timedelta
    n = Notifier(db=db)
    fired = []
    n.notification_signal.connect(lambda t, m: fired.append((t, m)))
    n.check_clock_out_soon(datetime.now() + timedelta(minutes=20), datetime.now())
    assert len(fired) == 1
    assert '퇴근' in fired[0][0]

    set_language('en')
    n2 = Notifier(db=db)
    fired2 = []
    n2.notification_signal.connect(lambda t, m: fired2.append((t, m)))
    n2.check_clock_out_soon(datetime.now() + timedelta(minutes=20), datetime.now())
    assert len(fired2) == 1
    assert 'Clock-out' in fired2[0][0]
    set_language('ko')


case("I18N-1. SettingsView 한국어 라벨", test_settings_korean_labels)
case("I18N-2. SettingsView 영어 라벨", test_settings_english_labels)
case("I18N-3. MainWindow 한국어 (메뉴/버튼)", test_main_window_language)
case("I18N-4. MiniWidget ko/en 전환 후 라벨", test_mini_widget_language)
case("I18N-5. Notifier 알림 메시지 ko/en", test_notifier_language)

print()
print("=" * 60)
print(f"PASS: {len(PASS)}  FAIL: {len(FAIL)}")
if FAIL:
    print("\nFAILED:")
    for label, err in FAIL:
        print(f"  - {label}: {err}")

if os.path.exists(db_path):
    try: os.remove(db_path)
    except: pass

sys.exit(1 if FAIL else 0)