#!/usr/bin/python3


import os


import cliapp
import yaml


class With(cliapp.Application):

    def add_settings(self):
        self.settings.string(
            ['env-file', 'e'],
            'read environment description from FILE',
            metavar='FILE',
            default=os.path.expanduser('~/.config/with-envs/environments.yaml'))

    def process_args(self, args):
        env_name = args[0]
        argv = args[1:]

        envs = self.get_environments()
        print(envs)
        env = dict(os.environ)
        env.update(envs[env_name])
        cliapp.runcmd(argv, env=env, stdout=None, stderr=None)

    def get_environments(self):
        filename = self.settings['env-file']
        return yaml.safe_load(open(filename))


With().run()