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

from argparse import Namespace, ArgumentParser

from ...App import Scope
from ..Cmd import Cmd
from ..CmdProjects import CmdProjects

# TODO: seems at least partly redundant to CmdPkgRequires / print_pkg_relations
class CmdPrereq(Cmd): # export

    def __init__(self, parent: CmdProjects) -> None:
        super().__init__(parent, 'prereq', help='path')

    def add_arguments(self, parser: ArgumentParser) -> None:
        super().add_arguments(parser)
        parser.add_argument('flavour', help='Flavour')
        parser.add_argument('module', nargs='*', help='Modules')

    async def _run(self, args: Namespace) -> None:
        deps = self.app.get_modules_from_project_txt(args.module, ['pkg.requires.jw'],
            args.flavour, scope = Scope.Subtree, add_self=False, names_only=True)
        print(' '.join(deps))