import argparse
import os
from typing import Any

'''
Example usage for testing purposes:

Move the data:
    rm -Rf ~/hipchat-data
    mkdir ~/hipchat-data
    ./manage.py convert_hipchat_data ~/hipchat-31028-2018-08-08_23-23-22.tar --output ~/hipchat-data
    ./manage.py import --destroy-rebuild-database hipchat ~/hipchat-data


Test out the realm:
    ./tools/run-dev.py
    go to browser and use your dev url

spec:
    https://confluence.atlassian.com/hipchatkb/
    exporting-from-hipchat-server-or-data-center-for-data-portability-950821555.html
'''

from django.core.management.base import BaseCommand, CommandError, \
    CommandParser

from zerver.data_import.hipchat import do_convert_data


class Command(BaseCommand):
    help = """Convert the Hipchat data into Zulip data format."""

    def add_arguments(self, parser: CommandParser) -> None:
        parser.add_argument('hipchat_tar', nargs='+',
                            metavar='<hipchat data tarfile>',
                            help="tar of Hipchat data")

        parser.add_argument('--output', dest='output_dir',
                            action="store",
                            help='Directory to write exported data to.')

        parser.add_argument('--mask', dest='masking_content',
                            action="store_true",
                            help='Mask the content for privacy during QA.')

        parser.add_argument('--slim-mode', dest='slim_mode',
                            action="store_true",
                            help="Default to no public stream subscriptions if no token is available." +
                            "  See import docs for details.")

        parser.add_argument('--token', dest='api_token',
                            action="store",
                            help='API token for the HipChat API for fetching subscribers.')

        parser.formatter_class = argparse.RawTextHelpFormatter

    def handle(self, *args: Any, **options: Any) -> None:
        output_dir = options["output_dir"]

        if output_dir is None:
            raise CommandError("You need to specify --output <output directory>")

        if os.path.exists(output_dir) and not os.path.isdir(output_dir):
            raise CommandError(output_dir + " is not a directory")

        os.makedirs(output_dir, exist_ok=True)

        if os.listdir(output_dir):
            raise CommandError('Output directory should be empty!')

        output_dir = os.path.realpath(output_dir)

        for path in options['hipchat_tar']:
            if not os.path.exists(path):
                raise CommandError(f"Tar file not found: '{path}'")

            print("Converting Data ...")
            do_convert_data(
                input_tar_file=path,
                output_dir=output_dir,
                masking_content=options.get('masking_content', False),
                slim_mode=options['slim_mode'],
                api_token=options.get("api_token"),
            )