import click


def init_app(app):
    @app.cli.group('converter')
    def converter():
        ''' Converter commands. '''
        pass

    @converter.group('sandpaper')
    def sandpaper_converter():
        ''' Sandpaper converter commands. '''
        pass

    @sandpaper_converter.command('run')
    @click.argument('json_db')
    @click.argument('data_dir')
    def run_sandpaper_converter(json_db, data_dir):
        ''' Run the sandpaper converter. '''
        from app.converters.sandpaper import convert
        convert(json_db, data_dir)