# -*- coding: utf-8 -*-

from argparse import Namespace, ArgumentParser

from .Cmd import Cmd
from ..CmdDistro import CmdDistro

class CmdInstall(Cmd): # export

    def __init__(self, parent: CmdDistro) -> None:
        super().__init__(parent, 'install', help="Install the distribution's notion of available packages")

    def add_arguments(self, parser: ArgumentParser) -> None:
        super().add_arguments(parser)
        parser.add_argument("names", nargs="*", help="Packages to be installed")
        parser.add_argument('--only-update', default=False, action='store_true', help='Only update the listed packages, don\'t install them')
        parser.add_argument('-F', '--fixed-strings', action='store_true',
                            help='Don\'t expand platform.expand_macros macros in <names>')

    async def _run(self, args: Namespace) -> None:
        names = names if args.fixed_strings else self.app.distro.expand_macros(args.names)
        return await self.distro.install(names, only_update=args.only_update)