from . import builder, config, exceptions, generator, logging, options
import click
import os
import sys

__all__ = []

options.setup()
LOG = logging.getLogger(__name__)


@click.group()
@click.option('-v', '--verbose', is_flag=True)
def promenade(*, verbose):
    if _debug():
        verbose = True
    logging.setup(verbose=verbose)


@promenade.command('build-all', help='Construct all scripts')
@click.option('-o',
              '--output-dir',
              default='.',
              type=click.Path(exists=True,
                              file_okay=False,
                              dir_okay=True,
                              resolve_path=True),
              required=True,
              help='Location to write complete cluster configuration.')
@click.option('--validators', is_flag=True, help='Generate validation scripts')
@click.option('--leave-kubectl',
              is_flag=True,
              help='Leave behind kubectl on joined nodes')
@click.argument('config_files', nargs=-1, type=click.File('rb'))
def build_all(*, config_files, leave_kubectl, output_dir, validators):
    debug = _debug()
    try:
        c = config.Configuration.from_streams(
            debug=debug,
            substitute=True,
            allow_missing_substitutions=False,
            leave_kubectl=leave_kubectl,
            streams=config_files)
        b = builder.Builder(c, validators=validators)
        b.build_all(output_dir=output_dir)
    except exceptions.PromenadeException as e:
        e.display(debug=debug)
        sys.exit(e.EXIT_CODE)


@promenade.command('generate-certs', help='Generate a certs for a site')
@click.option('-o',
              '--output-dir',
              type=click.Path(exists=True,
                              file_okay=False,
                              dir_okay=True,
                              resolve_path=True),
              required=True,
              help='Location to write *-certificates.yaml')
@click.argument('config_files', nargs=-1, type=click.File('rb'))
def generate_certs(*, config_files, output_dir):
    debug = _debug()
    try:
        c = config.Configuration.from_streams(debug=debug,
                                              streams=config_files,
                                              substitute=True,
                                              allow_missing_substitutions=True,
                                              validate=False)
        g = generator.Generator(c)
        g.generate(output_dir)
    except exceptions.PromenadeException as e:
        e.display(debug=debug)
        sys.exit(e.EXIT_CODE)


def _debug():
    return os.environ.get('PROMENADE_DEBUG', '').lower() in {'1', 'true'}