import argparse
import logging
import os
import sys

from jinja2 import Environment
from jinja2 import FileSystemLoader


logging.basicConfig(stream=sys.stdout, level=logging.DEBUG)
log = logging.getLogger("connector config")


DEFAULT_CONFIG_TEMPLATE = "/tmp/config.json.jinja"
DEFAULT_CONFIG_FILE = "/tmp/config.json"

if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument("-c", "--config-template", default=DEFAULT_CONFIG_TEMPLATE)
    parser.add_argument("-o", "--config-file", default=DEFAULT_CONFIG_FILE)
    parser.add_argument("-v", "--verbose", action="store_true")
    args = parser.parse_args()
    env_variables = os.environ.items()
    jinja_env = Environment(
        loader=FileSystemLoader("/"), lstrip_blocks=True, trim_blocks=True
    )
    config_template = jinja_env.get_template(args.config_template)
    config_file = config_template.render(env_variables)
    if args.verbose:
        log.info("\n%s" % config_file)
    log.info("%s was successfully created" % args.config_file)
    with open(args.config_file, "w") as f:
        f.write(config_file)