from __future__ import annotations

from typing import TYPE_CHECKING, override

from ....lib.log import NOTICE, log
from .Cmd import Cmd, Parent

if TYPE_CHECKING:
    from argparse import ArgumentParser, Namespace

class CmdDep(Cmd):  # export

    def __init__(self, parent: Parent) -> None:
        super().__init__(
            parent,
            'deps',
            help = 'Check for circular dependencies between given modules',
        )

    @override
    def add_arguments(self, parser: ArgumentParser) -> None:
        super().add_arguments(parser)
        parser.add_argument('module', nargs = '*', help = 'Modules')
        parser.add_argument('-f', '--flavour', nargs = '?', default = 'build')

    @override
    async def _run(self, args: Namespace) -> None:
        cycle = self.app.find_circular_deps(args.module, args.flavour)
        if cycle:
            log(
                NOTICE,
                f'Found circular dependency in flavour {args.flavour}: '
                ' -> '.join(cycle)
            )
            exit(1)
        log(
            NOTICE,
            f'No circular dependency found for flavour {args.flavour} in modules:',
            ' '.join(args.module),
        )