#!/usr/bin/env python3
"""CLI wrapper for running QMK commands.
"""
import os
import sys
from importlib.util import find_spec
from pathlib import Path

# Add the QMK python libs to our path
script_dir = Path(os.path.realpath(__file__)).parent
qmk_dir = script_dir.parent
python_lib_dir = Path(qmk_dir / 'lib' / 'python').resolve()
sys.path.append(str(python_lib_dir))


def _check_modules(requirements):
    """ Check if the modules in the given requirements.txt are available.
    """
    with Path(qmk_dir / requirements).open() as fd:
        for line in fd.readlines():
            line = line.strip().replace('<', '=').replace('>', '=')

            if len(line) == 0 or line[0] == '#' or line.startswith('-r'):
                continue

            if '#' in line:
                line = line.split('#')[0]

            module = dict()
            module['name'] = line.split('=')[0] if '=' in line else line
            module['import'] = module['name'].replace('-', '_')

            # Not every module is importable by its own name.
            if module['name'] == "pep8-naming":
                module['import'] = "pep8ext_naming"
            elif module['name'] == 'pyusb':
                module['import'] = 'usb.core'

            if not find_spec(module['import']):
                print('Could not find module %s!' % module['name'])
                print('Please run `python3 -m pip install -r %s` to install required python dependencies.' % (qmk_dir / requirements,))
                if developer:
                    print('You can also turn off developer mode: qmk config user.developer=None')
                print()
                exit(255)


developer = False
# Make sure our modules have been setup
_check_modules('requirements.txt')

# Setup the CLI
import milc  # noqa

# For developers additional modules are needed
if milc.cli.config.user.developer:
    # Do not run the check for 'config',
    # so users can turn off developer mode
    if len(sys.argv) == 1 or (len(sys.argv) > 1 and 'config' != sys.argv[1]):
        developer = True
        _check_modules('requirements-dev.txt')

milc.EMOJI_LOGLEVELS['INFO'] = '{fg_blue}Ψ{style_reset_all}'


@milc.cli.entrypoint('QMK Helper Script')
def qmk_main(cli):
    """The function that gets run when no subcommand is provided.
    """
    cli.print_help()


def main():
    """Setup our environment and then call the CLI entrypoint.
    """
    # Change to the root of our checkout
    os.environ['ORIG_CWD'] = os.getcwd()
    os.environ['DEPRECATED_BIN_QMK'] = '1'
    os.chdir(qmk_dir)

    print('Warning: The bin/qmk script is being deprecated. Please install the QMK CLI: python3 -m pip install qmk', file=sys.stderr)

    # Import the subcommands
    import qmk.cli  # noqa

    # Execute
    return_code = milc.cli()

    if return_code is False:
        exit(1)

    elif return_code is not True and isinstance(return_code, int):
        if return_code < 0 or return_code > 255:
            milc.cli.log.error('Invalid return_code: %d', return_code)
            exit(255)

        exit(return_code)

    exit(0)


if __name__ == '__main__':
    main()