mower-ng/webview_ui.py

#!/usr/bin/env python3

"""
Copyright (c) 2023 zhbaor <zhbaor@zhaozuohong.vip>

This file is part of mower-ng (https://git.zhaozuohong.vip/mower-ng/mower-ng).

Mower-ng is free software: you may copy, redistribute and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation, version 3 or later.

This file is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.

This file incorporates work covered by the following copyright and
permission notice:

    Copyright (c) 2024 MuelNova <muel@nova.gal>

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.
"""

import json
import os
import sys
import time
import webbrowser
from datetime import datetime, timedelta
from threading import Thread


def show_error_then_exit(msg: str):
    try:
        from tkinter import messagebox

        messagebox.showerror(title="mower-ng", message=msg)
    except Exception:
        print(msg)
    sys.exit()


if __name__ == "__main__":
    from mower.utils import path

    if len(sys.argv) == 2:
        path.global_space = sys.argv[1]

    lock_file = path.get_path("@app/lockfile.json")
    if lock_file.exists():
        import psutil

        try:
            with lock_file.open("r", encoding="utf-8") as f:
                data = json.load(f)
            pid = data["pid"]
            if psutil.pid_exists(pid):
                show_error_then_exit(f"mower-ng进程正在运行（PID: {pid}）")
        except Exception:
            pass

    from mower import __system__, __version__
    from mower.utils import config
    from mower.utils.network import get_new_port, is_port_in_use
    from server import app

    token = config.conf.webview.token
    host = "0.0.0.0" if token else "127.0.0.1"
    if token:
        port = config.conf.webview.port
        if is_port_in_use(port):
            show_error_then_exit(f"端口{port}已被占用，无法启动")
    else:
        port = get_new_port()

    with lock_file.open("w", encoding="utf-8") as f:
        json.dump({"pid": os.getpid(), "port": port, "token": token}, f)

    url = f"http://127.0.0.1:{port}"
    if token:
        url += f"?token={token}"
    if token:
        app.token = token

    flask_thread = Thread(
        target=app.run,
        kwargs={"host": "::" if token else "127.0.0.1", "port": port},
        daemon=True,
    )
    flask_thread.start()
    if __system__ == "windows" and token:
        Thread(
            target=app.run,
            kwargs={"host": "0.0.0.0", "port": port},
            daemon=True,
        ).start()

    from PIL import Image
    from pystray import Icon, Menu, MenuItem

    img = Image.open(path.get_path("@install/logo.png"))
    display_path = path.global_space or "单开运行"

    icon = Icon(
        name="mower-ng",
        icon=img,
        menu=Menu(
            MenuItem(
                text=f"mower-ng@{__version__}",
                action=None,
                enabled=False,
            ),
            MenuItem(
                text=display_path,
                action=None,
                enabled=False,
            ),
            Menu.SEPARATOR,
            MenuItem(
                text="打开网页面板",
                action=lambda: webbrowser.open(url),
                default=True,
            ),
            MenuItem(
                text="退出",
                action=lambda: icon.stop(),
            ),
        ),
        title=f"mower-ng ({display_path})",
    )

    def open_browser():
        start_time = datetime.now()
        port_occupied = False
        while datetime.now() - start_time < timedelta(seconds=10):
            if is_port_in_use(port):
                port_occupied = True
                break
            time.sleep(0.1)
        if not port_occupied:
            show_error_then_exit("Flask服务器启动失败")

        webbrowser.open(url)

    Thread(target=open_browser, daemon=True).start()
    icon.run()

    lock_file.unlink()