from __future__ import annotations
import os
import re

from ...lib.log import DEBUG, log
from ...lib.Uri import Uri
from .Cmd import Cmd, Parent
from typing import TYPE_CHECKING

if TYPE_CHECKING:
    from argparse import ArgumentParser, Namespace

class CmdGetAuthInfo(Cmd):  # export

    def __init__(self, parent: Parent) -> None:
        super().__init__(
            parent,
            'get-auth-info',
            help = 'Try to retrieve authentication information from the source tree',
        )

    def add_arguments(self, parser: ArgumentParser) -> None:
        super().add_arguments(parser)
        parser.add_argument(
            '--only-values',
            default = False,
            action = 'store_true',
            help = 'Don\'t prefix values by "<field-name>="',
        )
        parser.add_argument(
            '--username',
            default = False,
            action = 'store_true',
            help = 'Show user name'
        )
        parser.add_argument(
            '--password',
            default = False,
            action = 'store_true',
            help = 'Show password'
        )
        parser.add_argument(
            '--remote-owner-base',
            default = False,
            action = 'store_true',
            help = 'Show remote base URL for owner jw-pkg was cloned from',
        )
        parser.add_argument(
            '--remote-base',
            default = False,
            action = 'store_true',
            help = 'Show remote base URL',
        )

    async def _run(self, args: Namespace) -> None:
        keys = ['username', 'password']

        # --- Milk jw-pkg repo
        jw_pkg_dir = self.app.find_dir('jw-pkg', pretty = False)
        if not os.path.isdir(jw_pkg_dir + '/.git'):
            log(DEBUG, f'jw-pkg directory is not a Git repo: {jw_pkg_dir}')
            return
        git_result = await self.app.exec_context.run(
            ['git', '-C', jw_pkg_dir, 'remote', '-v']
        )
        result: dict[str, str] = {}
        for line in git_result.stdout_str.splitlines():
            name, url, typ = re.split(r'\s+', line)
            if name == 'origin' and typ in [
                    '(pull)',
                    '(fetch)',
            ]:  # TODO: Use other remotes, too?
                parsed = Uri(url)
                for key in keys:
                    result[key] = getattr(parsed, key)
                base = parsed.to_string
                base = re.sub(r'/jw-pkg', '', base)
                base = re.sub(r'/proj$', '', base)
                base = re.sub(r'/proj$', '', base)
                result['remote_owner_base'] = base
                result['remote_base'] = os.path.dirname(base)
                break

        # --- Print results
        for key, val in result.items():
            if not getattr(args, key, None):
                continue
            if val is None:
                continue
            if args.only_values:
                print(val)
                continue
            print(f'{key}="{val}"')