"""
UI 启动 smoke test：
- 所有模块可正常 import
- QApplication 能用 offscreen 平台创建
- MainWindow 能实例化、各 Tab 能构建
- AIConfigDialog 能弹出
"""
import os
import sys

# offscreen 平台：允许在没有显示器的环境（CI/容器）跑 Qt
os.environ["QT_QPA_PLATFORM"] = "offscreen"

sys.path.insert(0, os.path.dirname(__file__))

from PyQt5.QtWidgets import QApplication
from PyQt5.QtCore import QTimer

from ui.main_window import MainWindow, APP_NAME
from ui.host_dialog import HostDialog
from ui.config_dialog import AIConfigDialog, PRESETS
from ui.widgets import FileBrowser, MonitorPanel, AIChatPanel
from core.ai_agent import AIAgent


def main():
    app = QApplication(sys.argv)
    app.setApplicationName(APP_NAME)

    print("[1/3] 验证 MainWindow 实例化")
    w = MainWindow()
    assert w.windowTitle().startswith(APP_NAME), w.windowTitle()
    assert w.tabs.count() == 4, f"应有 4 个 Tab，实际 {w.tabs.count()}"
    print(f"  ✓ 主窗口创建，Tab 数量 = {w.tabs.count()}")

    print("[2/4] 验证子组件")
    assert isinstance(w.file_browser, FileBrowser)
    assert isinstance(w.monitor, MonitorPanel)
    assert isinstance(w.ai_panel, AIChatPanel)
    # 验证新增功能
    assert hasattr(w.monitor, "_spark_cpu"), "MonitorPanel 应有 CPU 迷你图"
    assert hasattr(w.monitor, "_spark_mem"), "MonitorPanel 应有内存迷你图"
    assert hasattr(w.terminal_panel, "snippet_combo"), "TerminalPanel 应有片段下拉框"
    assert hasattr(w, "act_dark"), "MainWindow 应有暗色主题菜单项"
    menus = [a.text() for a in w.menuBar().actions()]
    assert "视图(&V)" in menus, f"应有视图菜单: {menus}"
    print(f"  ✓ FileBrowser / MonitorPanel / AIChatPanel 全部就位")
    print(f"  ✓ 暗色主题切换 / CPU·内存迷你图 / 命令片段下拉框")

    print("[3/4] 验证对话框")
    # 主机对话框
    hd = HostDialog(current={"name": "test", "host": "1.2.3.4", "port": 22,
                              "username": "u", "password": "p", "key_path": ""})
    assert hd.name_edit.text() == "test"
    assert hd.host_edit.text() == "1.2.3.4"
    hd.close()
    print("  ✓ HostDialog 编辑模式可读字段")

    # AI 配置对话框
    agent = AIAgent(api_key="test-key", base_url="http://localhost:1/v1", model="x")
    cd = AIConfigDialog(agent)
    assert cd.api_key_edit.text() == "test-key"
    assert len(PRESETS) >= 6
    cd.close()
    print(f"  ✓ AIConfigDialog + {len(PRESETS)} 个预设")

    print("[4/4] 验证主题切换")
    from ui.theme import get_theme, set_theme, get_qss
    # 切换到暗色
    w.act_dark.setChecked(True)
    w._toggle_theme()
    assert get_theme() == "dark"
    qss = app.styleSheet()
    assert len(qss) > 100, "QSS 应该有内容"
    # 切回亮色
    w.act_dark.setChecked(False)
    w._toggle_theme()
    assert get_theme() == "light"
    print(f"  ✓ 暗/亮主题切换正常 (dark QSS={len(get_qss('dark'))} chars)")

    # 清理
    w.close()
    print("\n所有 UI 组件加载正常 ✓")
    QTimer.singleShot(0, app.quit)
    app.exec_()


if __name__ == "__main__":
    main()