bash_common/bcui at main · billyquith/bash_common · GitHub

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#!/usr/bin/env python3
"""bcui - local browser UI for bash_common commands."""

import argparse
import os
import sys
import webbrowser


def main():
    script_dir = os.path.dirname(os.path.abspath(__file__))
    venv_python = os.path.join(script_dir, ".venv", "bin", "python")
    if os.path.exists(venv_python) and os.path.abspath(sys.executable) != os.path.abspath(venv_python):
        os.execv(venv_python, [venv_python, __file__, *sys.argv[1:]])

    sys.path.insert(0, script_dir)

    parser = argparse.ArgumentParser(
        prog="bcui",
        description="Start the bash_common local web UI.",
    )
    parser.add_argument("--host", default="127.0.0.1",
                        help="host to bind (default: 127.0.0.1)")
    parser.add_argument("--allow-lan", action="store_true",
                        help="allow binding to a non-localhost address")
    parser.add_argument("--port", default=8765, type=int,
                        help="port to bind (default: 8765)")
    parser.add_argument("--cwd", default=os.getcwd(),
                        help="default working directory for commands")
    parser.add_argument("--no-browser", action="store_true",
                        help="do not open a browser automatically")
    parser.add_argument("--debug", action="store_true",
                        help="run Flask in debug mode")
    args = parser.parse_args()
    localhost_names = {"127.0.0.1", "localhost", "::1"}
    if args.host not in localhost_names and not args.allow_lan:
        print("Error: refusing to expose the command runner on a non-localhost address.")
        print("Re-run with --allow-lan if you intentionally want LAN access.")
        return 1

    try:
        from webui.app import create_app
    except ModuleNotFoundError as exc:
        if exc.name == "flask":
            print("Error: Flask is not installed. Run 'bcinit' to install dependencies.")
            print("Or install manually with: .venv/bin/python -m pip install -r requirements.txt")
            return 1
        raise

    app = create_app(script_dir, os.path.abspath(args.cwd))
    url = f"http://{args.host}:{args.port}"
    print(f"BC UI running at {url}")
    if args.host not in localhost_names:
        print("Warning: BC UI can run local commands and is reachable from other machines.")
    print("Press Ctrl-C to stop.")

    if not args.no_browser:
        webbrowser.open(url)

    app.run(host=args.host, port=args.port, debug=args.debug)
    return 0


if __name__ == "__main__":
    sys.exit(main())