"""
For full reference check: http://jinja.pocoo.org/docs/2.9/api/
"""
import logging
import json

import yaml
from jinja2 import Environment, FileSystemLoader, select_autoescape


env = Environment(
            loader=FileSystemLoader('./'),
            autoescape=select_autoescape(['json'])
        )

template = env.get_template('template.json')

try:
    with open('vars.yml') as f:
        variables = yaml.load(f)
    logging.info('Loaded variables.')
except IOError:
    logging.error('cannot open', f)

try:
    with open('processed_file.json', 'w') as f:
        json_object = json.loads(template.render(
                    name=variables['name'],
                    statement=variables['statement']
                )
            )
        json.dump(json_object, f)
    logging.info('Wrote to ', f)
except IOError:
    logging.error('cannot open', f)