import os
from argparse import Namespace, _SubParsersAction

from mdrsclient.api import FileApi, FolderApi
from mdrsclient.commands.base import BaseCommand
from mdrsclient.exceptions import IllegalArgumentException


class RmCommand(BaseCommand):
    @classmethod
    def register(cls, parsers: _SubParsersAction) -> None:
        command = cls()
        rm_parser = parsers.add_parser("rm", help="remove the file or folder")
        rm_parser.add_argument(
            "-r", "--recursive", help="remove folders and their contents recursive", action="store_true"
        )
        rm_parser.add_argument("remote_path", help="remote file path (remote:/lab/path/file)")
        rm_parser.set_defaults(func=command.rm)

    def rm(self, args: Namespace) -> None:
        (remote, laboratory_name, r_path) = self._parse_remote_host_with_path(args.remote_path)
        r_path = r_path.rstrip("/")
        r_dirname = os.path.dirname(r_path)
        r_basename = os.path.basename(r_path)
        connection = self._create_connection(remote)
        laboratory = self._find_laboratory(connection, laboratory_name)
        parent_folder = self._find_folder(connection, laboratory, r_dirname)
        file = parent_folder.find_file(r_basename)
        if file is not None:
            file_api = FileApi(connection)
            file_api.destroy(file)
        else:
            folder = parent_folder.find_sub_folder(r_basename)
            if folder is None:
                raise IllegalArgumentException(f"Cannot remove `{r_path}`: No such file or folder.")
            if not args.recursive:
                raise IllegalArgumentException(f"Cannot remove `{r_path}`: Is a folder.")
            folder_api = FolderApi(connection)
            folder_api.destroy(folder.id, True)