# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

from __future__ import absolute_import, print_function, unicode_literals

from taskgraph.transforms.base import TransformSequence
from taskgraph.util.scriptworker import get_release_config
from taskgraph.util.schema import resolve_keyed_by


transforms = TransformSequence()


@transforms.add
def format(config, tasks):
    """ Apply format substitution to worker.env and worker.command.
    """

    format_params = {
        'release_config': get_release_config(config),
        'config_params': config.params,
    }

    for task in tasks:
        format_params['task'] = task

        command = task.get('worker', {}).get('command', [])
        task['worker']['command'] = [x.format(**format_params) for x in command]

        env = task.get('worker', {}).get('env', {})
        for k in env.keys():
            resolve_keyed_by(env, k, 'snap envs', project=config.params['project'])
            task['worker']['env'][k] = env[k].format(**format_params)

        yield task