# bsv - Backup, Synchronization, Versioning
# Copyright (C) 2023  Simon Boyé
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
from __future__ import annotations

from argparse import ArgumentParser
import os.path
from pathlib import Path
import sys
from textwrap import dedent

from bsv import __version__
from bsv.cli import get_error_console, init_consoles
from bsv.command import init_commands
from bsv.util import default_bsv_config_path


def make_parser(
    prog: str = "",
    exit_on_error: bool = True,
) -> ArgumentParser:
    parent_parser = ArgumentParser(add_help=False)
    parent_parser.add_argument(
        "--color",
        default = "auto",
        choices = ("always", "auto", "never"),
        help = dedent("""
            Force or disable colors, or auto-detect terminal support.
        """).strip(),
    )
    parent_parser.add_argument(
        "--config",
        default = default_bsv_config_path(),
        type = Path,
        dest = "config_path",
        help = dedent("""
            Bsv config path. Overrides default paths and BSV_CONFIG environment variable.
        """).strip(),
    )

    parser = ArgumentParser(
        prog = prog or os.path.basename(sys.argv[0]),
        description = dedent("""
            bsv - Backup, Synchronization, Versioning.
        """).strip(),
        parents = [parent_parser],
        exit_on_error = exit_on_error,
    )
    parser.add_argument(
        "--version",
        action = "version",
        version = f"bsv version {__version__}",
    )

    init_commands(parser, [parent_parser])

    return parser


def main(
    args: list[str] | None = None,
    prog: str = "",
    exit_on_error: bool = True,
) -> int:
    parser = make_parser(
        prog = prog or os.path.basename(sys.argv[0]),
        exit_on_error = exit_on_error,
    )
    arg_dict = vars(parser.parse_args(args or sys.argv[1:]))

    color = arg_dict.pop("color")
    init_consoles(color=color)

    command = arg_dict.pop("command")

    try:
        return command(**arg_dict)
    except Exception as err:
        get_error_console().print_exception()
    except KeyboardInterrupt:
        return 130

    return 0