#!/usr/bin/env python

import os
import sys
import argparse

from GLXShell.libs.shell import GLXShell

def main(argv=None):
    """Run when invoked from the operating system shell"""

    glxsh_parser = argparse.ArgumentParser(description="Commands as arguments")
    glxsh_parser.add_argument(
        "command",
        nargs="?",
        help="optional commands or file to run, if no commands given, enter an interactive shell",
    )
    glxsh_parser.add_argument(
        "command_args",
        nargs=argparse.REMAINDER,
        help="if commands is not a file use optional arguments for commands",
    )

    args = glxsh_parser.parse_args(argv)

    shell = GLXShell()

    sys_exit_code = 0
    if args.command:
        if os.path.isfile(args.command):
            # we have file to execute
            shell.onecmd_plus_hooks("@{command}".format(command=args.command))
        else:
            # we have a commands, run it and then exit
            shell.onecmd_plus_hooks(
                "{command} {args}".format(
                    command=args.command, args=" ".join(args.command_args)
                )
            )

    else:
        # we have no commands, drop into interactive mode
        sys_exit_code = shell.cmdloop()

    return sys_exit_code


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